Powered by Deep Web Technologies
Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Columbus HTS Power Cable | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

real electrical loads. The cable system forms an important electrical link in a utility substation in Columbus, Ohio. Columbus HTS Power Cable More Documents & Publications...

2

Albany HTS Power Cable | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

development and demonstration of a high-temperature superconducting (HTS) cable in the power grid in Albany, New York, including first-of-a-kind applications of a cable splice...

3

Long Island HTS Power Cable | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

demonstration of a hightemperature superconducting (HTS) power cable in the Long Island Power grid, spanning nearly half a mile and serving as a permanent link in the Long Island...

4

Project Fact Sheet Columbus HTS Power Cable Superconductivity  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Columbus Columbus HTS Power Cable Superconductivity Partnerships with Industry www.oe.energy.gov Phone: 202 \ 586-1411 Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585 Plugging America Into the Future of Power This project involves field-testing of a long-length high-temperature superconducting (HTS) cable under real environmental stresses and real electrical loads. The cable system forms an important electrical link in a util- ity substation in Columbus, Ohio. What are its Primary aPPlications? HTS power cables are used for electricity transmission and distribution. The Columbus cable is a distribution cable, conducting electricity within a local grid. What are the Benefits to Utilities?

5

Project Fact Sheet Long Island HTS Power Cable Superconducting  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Long Long Island HTS Power Cable Superconducting Power Equipment www.oe.energy.gov Phone: 202-586-1411 Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585 Plugging America Into the Future of Power What is the status of the Project? The cable was energized April 22, 2008 and serves the equivalent of 300,000 homes. It is the first HTS power cable to operate at transmission voltage in the grid. LIPA plans to retain the superconductor as a permanent part of it's grid. This project involves the demonstration of a high- temperature superconducting (HTS) power cable in the Long Island Power grid, spanning nearly half a mile and serving as a permanent link in the Long Island Power

6

HTS Cable Projects  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Superconductivity Superconductivity Partnerships with Industry ANL Air Liquide DOE Golden LANL AEP ORNL Nexans Niagara Mohawk Super Power American Superconductor NYSERDA BOC Praxair W ? tion systems. This is the most the nation. W superconductivity? HTS Cable Projects www.oe.energy.gov Phone: 202 \ 586-1411 Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585. Plugging America Into the Future of Power "A National Effort to Introduce New Technology into

7

HTS Cable Projects | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cable Projects HTS Cable Projects Fact sheet describing what is being done to modernize electricity transmission and distribution HTS Cable Projects More Documents & Publications...

8

Definition: Very Low Impedance (Hts) Cables | Open Energy Information  

Open Energy Info (EERE)

Very Low Impedance (Hts) Cables Very Low Impedance (Hts) Cables Jump to: navigation, search Dictionary.png Very Low Impedance (Hts) Cables Cables that use conducting materials that are very low impedance, which can enable better power flow control. Cables that use high temperature superconducting (HTS) conductor would be characterized as a VLI cable. HTS cables may enable additional benefits such as lower losses, increased power density, and self-fault limiting.[1] Related Terms power, power flow control References ↑ [www.smartgrid.gov/sites/default/files/pdfs/description_of_assets.pdf SmartGrid.gov 'Description of Assets'] An i LikeLike UnlikeLike You like this.Sign Up to see what your friends like. nline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Very_Low_Impedance_(Hts)_Cables&oldid=480440

9

Thermal management of long-length HTS cable systems  

Science Conference Proceedings (OSTI)

Projections of electric power production suggest a major shift to renewables, such as wind and solar, which will be in remote locations where massive quantities of power are available. One solution for transmitting this power over long distances to load centers is direct current (dc), high temperature superconducting (HTS) cables. Electric transmission via dc cables promises to be effective because of the low-loss, highcurrent- carrying capability of HTS wire at cryogenic temperatures. However, the thermal management system for the cable must be carefully designed to achieve reliable and energyefficient operation. Here we extend the analysis of a superconducting dc cable concept proposed by the Electric Power Research Institute (EPRI), which has one stream of liquid nitrogen flowing in a cryogenic enclosure that includes the power cable, and a separate return tube for the nitrogen. Refrigeration stations positioned every 10 to 20 km cool both nitrogen streams. Both go and return lines are contained in a single vacuum/cryogenic envelope. Other coolants, including gaseous helium and gaseous hydrogen, could provide potential advantages, though they bring some technical challenges to the operation of long-length HTS dc cable systems. A discussion of the heat produced in superconducting cables and a system to remove the heat are discussed. Also, an analysis of the use of various cryogenic fluids in long-distance HTS power cables is presented.

Demko, Jonathan A [ORNL; Hassenzahl, William V [ORNL

2011-01-01T23:59:59.000Z

10

Single and three-phase AC losses in HTS superconducting power transmission line prototype cables  

SciTech Connect

AC losses in two, one-meter-long lengths of HTS prototype multi-strand conductors (PMC`s) are measured with a temperature-difference calorimeter. Both single-phase and three-phase losses are examined with ac currents up to 1,000 A rms. The calorimeter, designed specifically for these measurements, has a precision of 1 mW. PMC {number_sign}1 has two helically-wound, non-insulated layers of HTS tape (19 tapes per layer), each layer wrapped with opposite pitch. PMC {number_sign}2 is identical except for insulation between the layers. The measured ac losses show no significant effect of interlayer insulation and depend on about the third power of the current--a result in agreement with the Bean-Norris model adapted to the double-helix configuration. The three-phase losses are a factor of two higher than those exhibited by a single isolated conductor, indicating a significant interaction between phases.

Daney, D.E.; Boenig, H.J.; Maley, M.P.; Coulter, J.Y. [Los Alamos National Lab., NM (United States); Fleshler, S. [American Superconductor, Inc., Westborough, MA (United States)

1997-11-01T23:59:59.000Z

11

Commercialization of Medium Voltage HTS Triax TM Cable Systems  

SciTech Connect

The original project scope that was established in 2007 aimed to install a 1,700 meter (1.1 mile) medium voltage HTS Triax{TM} cable system into the utility grid in New Orleans, LA. In 2010, however, the utility partner withdrew from the project, so the 1,700 meter cable installation was cancelled and the scope of work was reduced. The work then concentrated on the specific barriers to commercialization of HTS cable technology. The modified scope included long-length HTS cable design and testing, high voltage factory test development, optimized cooling system development, and HTS cable life-cycle analysis. In 2012, Southwire again analyzed the market for HTS cables and deemed the near term market acceptance to be low. The scope of work was further reduced to the completion of tasks already started and to testing of the existing HTS cable system in Columbus, OH. The work completed under the project included: Long-length cable modeling and analysis HTS wire evaluation and testing Cable testing for AC losses Optimized cooling system design Life cycle testing of the HTS cable in Columbus, OH Project management. The 200 meter long HTS Triax{TM} cable in Columbus, OH was incorporated into the project under the initial scope changes as a test bed for life cycle testing as well as the site for an optimized HTS cable cooling system. The Columbus cable utilizes the HTS TriaxTM design, so it provided an economical tool for these of the project tasks.

Knoll, David

2012-12-31T23:59:59.000Z

12

Triaxial HTS Cable for the AEP Bixby Project  

Science Conference Proceedings (OSTI)

Ultera has installed a single 200-meter long high temperature superconducting (HTS) 3-phase triaxial design cable at the American Electric Power (AEP) Bixby substation in Columbus, Ohio. The cable connects a 132/13.8 kV transformer to the distribution switchgear serving seven outgoing circuits. It was designed to carry 3000 Arms. Testing of 3- to 5-meter length prototype cables, including a 5-meter prototype with full scale terminations tested at ORNL was conducted prior to the manufacture and installation of the AEP triaxial cable. These prototypes were used to demonstrate the crucial operating conditions including steady state operation at the 3000 Arms design current, high voltage operation, high voltage withstand and 110 kV impulse, and overcurrent fault capability. A summary of the results from the thermal analysis and testing conducted by Ultera and ORNL will be presented. Some analysis of the cable thermal-hydraulic response based on the testing that were used to determine some of the cable cryogenic system requirements are also presented.

Demko, Jonathan A [ORNL; Gouge, Michael J [ORNL; Lindsay, David T [ORNL; Roden, Mark L [ORNL; Tolbert, Jerry Carlton [ORNL

2007-01-01T23:59:59.000Z

13

Qualification High Voltage Testing of Short Triax HTS Cables in the Laboratory  

Science Conference Proceedings (OSTI)

In order to qualify the electrical insulation design of future HTS cables installed in the electric grid, a number of high voltage qualification tests are generally performed in the laboratory on either single-phase model cables and/or actual three-phase cable samples. Prior to installation of the 200-m Triax HTS cable at the American Electric Power Bixby substation near Columbus, Ohio, in September, 2006, such tests were conducted on both single-phase model cables made at ORNL and tri-axial cable sections cut off from cable made on a production run. The three-phase tri-axial design provides some specific testing challenges since the ground shield and three phases are concentric about a central former with each phase separated by dielectric tape insulation immersed in liquid nitrogen. The samples were successfully tested and qualified for partial discharge inception, AC withstand, and lightning impulse where voltage is applied to one phase with the other phases grounded. In addition one of the phase pairs was tested for dc withstand as a ldquoworst caserdquo scenario to simulate the effect of VLF (Very Low Frequency) tests on the actual cable installed at the Bixby site. The model and prototype cables will be described and the high voltage test results summarized.

James, David Randy [ORNL; Sauers, Isidor [ORNL; Ellis, Alvin R [ORNL; Tuncer, Enis [ORNL; Gouge, Michael J [ORNL; Demko, Jonathan A [ORNL; Duckworth, Robert C [ORNL; Rey, Christopher M [ORNL

2009-01-01T23:59:59.000Z

14

Cooling Configuration Design Considerations for Long-Length HTS Cables  

SciTech Connect

Recent successes in demonstrating high temperature superconducting (HTS) cable systems hundreds of meters in length have inspired even longer length projects. A compact and energy efficient cooling configuration can be achieved using a counterflow-cooling arrangement. This is particularly attractive when all three phases are contained in a single cryostat because of the elimination of the space and thermal requirements of a separate liquid nitrogen return line. Future cable projects will utilize second generation (2G) wire which is expected to become lower in cost but may have different thermal requirements than first generation (1G) BSCCO wire due to the lower critical temperature and to a lesser extent, the lower thermal conductivity of the wire. HTS cable configurations will be studied with a numerical model to assess thermal hydraulic performance with AC and thermal losses; a summary of the results from the analysis will be presented. An analysis of the cable thermal- hydraulic response to over-current faults will be presented.

Demko, Jonathan A [ORNL; Duckworth, Robert C [ORNL

2009-01-01T23:59:59.000Z

15

Power superconducting power transmission cable  

DOE Patents (OSTI)

The present invention is for a compact superconducting power transmission cable operating at distribution level voltages. The superconducting cable is a conductor with a number of tapes assembled into a subconductor. These conductors are then mounted co-planarly in an elongated dielectric to produce a 3-phase cable. The arrangement increases the magnetic field parallel to the tapes thereby reducing ac losses.

Ashworth, Stephen P. (Cambridge, GB)

2003-01-01T23:59:59.000Z

16

Superconducting Power Cables  

Science Conference Proceedings (OSTI)

This report is a continuation of a Technology Watch series on superconducting power cables that summarize full-scale superconducting cable projects throughout the world ranging from full-scale test installations to utility demonstration projects. The report covers various aspects of each project from design to implementation. When available, updated status regarding operation and maintenance (O&M) also is presented. The report will serve as a knowledge resource on the status of superconducting cable tech...

2008-12-19T23:59:59.000Z

17

Superconducting Power Cables  

Science Conference Proceedings (OSTI)

Power cables constructed from superconducting materials are being realized in utility demonstrations within the United States. Cooled by liquid nitrogen, high temperature superconducting power cables can transfer large amounts of power through relatively small cross sections. The key to their high power capacity is the high current density inherent with superconductors; a superconducting wire can conduct several times as much current as copper or aluminum conductors of the same cross section. For the pas...

2006-11-30T23:59:59.000Z

18

HTS applications  

E-Print Network (OSTI)

Superconductivity has found many attractive applications in medicine, science, power systems, engineering, transport and electronics. One of the most prominent applications of superconductivity are superconducting magnets e.g. MRI magnets, NMR magnets, accelerator magnets, and magnets for fusion; most applications still use low temperature superconductors. Since the discovery of high temperature superconductivity (HTS) in 1986 there has been a tremendous progress in R&D of HTS material, wires and applications. Especially for power system applications, HTS offers considerable economic benefits. Many HTS demonstrator or prototype applications have been built and successfully tested, and some HTS applications like cables and superconducting fault current limiters seem very close to commercialisation. This paper gives an overview about the present and future HTS applications in power applications, high field magnets and current leads. In addition results of the Forschungszentrum Karlsruhe program to develop H...

Noe, M; Fietz, W H; Goldacker, W; Schneider, Th

2009-01-01T23:59:59.000Z

19

Superconducting Power Cables  

Science Conference Proceedings (OSTI)

This report is the fourth installment of a Technology Watch series on Superconducting Power Cables that summarize full-scale superconducting cable projects throughout the world. The series provides an overview of technical fundamentals and status updates on ongoing development efforts ranging from full-scale test installations to grid-deployed demonstration projects. This installment of the series covers ongoing full-scale utility installations and proposed demonstration projects worldwide. Information a...

2009-12-23T23:59:59.000Z

20

High Voltage Testing of a 5-meter Prototype Triaxial HTS Cable  

SciTech Connect

High voltage tests were performed on a 5-m long prototype triaxial HTS cable (supplied by Ultera) at ORNL in preparation for installation of a 200-m HTS cable of the same design at the AEP utility substation in Columbus, Ohio. The triaxial design comprises three concentric phases and shield around a common former with the phase to phase dielectric at cryogenic temperature. Advantages of this design include increased current density, a reduced amount of HTS tape needed, and reduced heat load. The phase to phase voltage will be 13.2 kVrms (7.6 kVrms to ground). Preliminary testing was done on half-scale and full-scale terminations which successfully passed AC withstand, partial discharge, and impulse tests. High voltage tests conducted on the 5-m cable with the cable straight and after bending 90 degrees were ac withstand to 39 kVrms, partial discharge inception, and a minimum of 10 positive and 10 negative lightning waveform impulses at 110 kV. Phase to phase insulation was tested by applying high voltage to each phase one at a time with all the other phases grounded. Partial discharge data will be presented. The 5-m prototype triaxial HTS cable passed all the HV tests performed, with a PD inception voltage significantly above the required voltage.

Sauers, Isidor [ORNL; James, David Randy [ORNL; Ellis, Alvin R [ORNL; Tuncer, Enis [ORNL; Pace, Marshall O [ORNL; Gouge, Michael J [ORNL; Demko, Jonathan A [ORNL; Lindsay, David T [ORNL

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Aging Power Cable Maintenance Guideline  

Science Conference Proceedings (OSTI)

Medium-voltage cables (5- to 35-kV rated cables) have provided reasonable service in power plants. However, there is a concern that cables that have experienced long periods of wet service might degrade and fail in service. Because most plants have had few problems with medium-voltage cables, little on-staff experience with medium-voltage cables exists at most sites. This report provides information that will be of practical use when questions concerning medium-voltage cable longevity in adverse ...

2012-11-16T23:59:59.000Z

22

Field Demonstration of a 24-kV Warm Dielectric Cable at Detroit Edison: FY2002 Annual Progress Report for the Detroit Edison HTS Cab le Field Demonstration Project  

Science Conference Proceedings (OSTI)

A project sponsored by EPRI, Pirelli Power Cables and Systems, the Department of Energy, Detroit Edison, and American Superconductor Corporation was initiated in 1998 to install and operate a 24 kV high temperature superconductor (HTS) power cable in a Detroit Edison substation to serve customer load. The previous years of activity have focused on design, testing, manufacturing, and installation of the cable system as described in the FY2000 and FY2001 status reports. The successful implementation of thi...

2003-02-26T23:59:59.000Z

23

Power Plant Practices to Ensure Cable Operability  

Science Conference Proceedings (OSTI)

Installation practices as well as environmental conditions affect the operability of electrical cables in power plants. This report evaluates operability criteria for nuclear power plant cables, good practices for cable installation, and cable maintenance and surveillance. As a reference source for utility practices, this report suggests potential improvements that could benefit the industry.

1992-05-02T23:59:59.000Z

24

High Temperature Superconducting Underground Cable  

SciTech Connect

The purpose of this Project was to design, build, install and demonstrate the technical feasibility of an underground high temperature superconducting (HTS) power cable installed between two utility substations. In the first phase two HTS cables, 320 m and 30 m in length, were constructed using 1st generation BSCCO wire. The two 34.5 kV, 800 Arms, 48 MVA sections were connected together using a superconducting joint in an underground vault. In the second phase the 30 m BSCCO cable was replaced by one constructed with 2nd generation YBCO wire. 2nd generation wire is needed for commercialization because of inherent cost and performance benefits. Primary objectives of the Project were to build and operate an HTS cable system which demonstrates significant progress towards commercial progress and addresses real world utility concerns such as installation, maintenance, reliability and compatibility with the existing grid. Four key technical areas addressed were the HTS cable and terminations (where the cable connects to the grid), cryogenic refrigeration system, underground cable-to-cable joint (needed for replacement of cable sections) and cost-effective 2nd generation HTS wire. This was the worlds first installation and operation of an HTS cable underground, between two utility substations as well as the first to demonstrate a cable-to-cable joint, remote monitoring system and 2nd generation HTS.

Farrell, Roger, A.

2010-02-28T23:59:59.000Z

25

Increased Power Flow Guidebook - Underground Cables  

Science Conference Proceedings (OSTI)

Utilities must consider a number of factors when evaluating uprating and upgrading options for underground transmission cables. This comprehensive guidebook documents the state-of-science for increasing power flow capacities of underground transmission cables. It provides an overview of underground transmission cable ratings and uprating techniques so that the maximum utilization can be obtained from the existing underground transmission infrastructure.

2003-12-01T23:59:59.000Z

26

Modeling and simulation of power cable insulation  

Science Conference Proceedings (OSTI)

The use of power cables for transmission and distribution of electrical power have increased since the advent of suitable, reliable and economical polymeric insulating material; such as cross-linked polyethylene (XLPE). Power cables plays crucial role ... Keywords: cross-linked polyethylene (XLPE), imperfect insulation, local defects, lossy insulation, partial discharge (PD)

K. D. Patil; A. A. Bhole; W. Z. Gandhare

2010-02-01T23:59:59.000Z

27

Corrosion-proofing armored power cables  

Science Conference Proceedings (OSTI)

A study of 89 power cables that were buried in soils containing a high salt content is discussed. The study was conducted to determine the corrosion behavior of armored power cables. It was found that an outer protective covering made of bitumin and cable strands does not protect the armor jacket sufficiently against soil corrosion. It is recommended, therefore, that steel armor protection be discontinued for the protection of power cable jackets and that the armor should not be connected to the jacket with copper wire in the couplers.

Munits, N.M.

1983-05-01T23:59:59.000Z

28

Improved Conventional Testing of Power Plant Cables  

Science Conference Proceedings (OSTI)

Factors such as mechanical stress, dust and pollution accumulation, moisture, and thermal aging can cause deterioration and ultimately failure of power, control, and instrumentation cables. This report documents physical, chemical, and electrical tests performed on thermally aged power plant cable, with emphasis on improvements in two major electrical diagnostic techniques: low-frequency insulation analysis to probe the bulk condition of cable insulation and partial discharge testing to detect cracks and...

1996-03-14T23:59:59.000Z

29

High voltage VLF testing of power cables  

SciTech Connect

This publication describes a laboratory test program conducted with the objective to develop a test that would replace the existing dc withstand test. The article describes the methodology used to establish the voltage duration and magnitude of VLF (0.1 Hz) high voltage field tests suitable for crosslinked polyethylene (XLPE) insulated power cable. The results show that the voltage breakdown of laboratory aged XLPE cable at 0.1 Hz is approximately equal to that at 60 Hz, that proof tests at 0.1 Hz is approximately equal to that at 60 Hz, that proof tests at 0.1 Hz cause very little damage to the cable, and that 0.1 Hz testing appears to be a satisfactory alternate to dc testing. Preliminary values are suggested for voltage magnitude and time duration of cable acceptance, maintenance and proof tests at 0.1 Hz for XLPE cable rated up to 35 kV. A program is underway to similarly evaluate samples of service-aged XLPE cable; as well as to demonstrate the use of the preliminary test values at typical utility installations.

Eager, G.S.; Katz, C.; Fryszczyn, B. [Cable Technology Labs., Inc., New Brunswick, NJ (United States); Densley, J. [Ontario Hydro, Toronto, Ontario (Canada); Bernstein, B.S. [EPRI, Washington, DC (United States)

1997-04-01T23:59:59.000Z

30

Transient sheath overvoltages in armored power cables  

SciTech Connect

This paper is concerned with methods of limiting the build-up of transient voltages between sheath and armor in long armored power cables. Calculations by a frequency dependent cable model demonstrate that this voltage can be efficiently limited to an acceptable level by introducing sheath-armor bondings at regular intervals, or by using a semiconductive sheath-armor interlayer. The paper investigates the required minimum length between bondings, as well as the required conductivity of the sheath-armor interlayer if the use of bondings is to be avoided.

Gustavsen, B. [Norwegian Electric Power Research Inst., Trondheim (Norway)] [Norwegian Electric Power Research Inst., Trondheim (Norway); Sletbak, J. [Norwegian Inst. of Technology, Trondheim (Norway)] [Norwegian Inst. of Technology, Trondheim (Norway)

1996-07-01T23:59:59.000Z

31

Applications of Increased Power Flow Strategies for Underground Cables  

Science Conference Proceedings (OSTI)

In 2003, the Electric Power Research Institute (EPRI) recognized that there were no detailed resources on the topic of increased power flow (sometimes called uprating) for underground cable systems. Transmission cables were often the focus of evaluations where utilities were seeking to get the greatest improvement in load transfer for a given investment. The 2003 EPRI report, Increased Power Flow Guidebook: Underground Cables, describes basic cable rating principles and ...

2013-11-21T23:59:59.000Z

32

Economics of heat loss for power cables  

SciTech Connect

Energy losses occur in power cables which cause a rise in the conductor temperature. A trend toward higher allowable conductor temperatures has increased the energy losses during operation. At the same time, the costs of the energy has increased dramatically. With a given installation and load, energy costs vary inversely with the conductor size. However, initial costs vary directly with the conductor size. This relationship can be utilized to select a conductor size which minimizes the sum of the initial costs an the energy costs. This paper reviews present value techniques and identifies the level of energy costs in some particular installation configurations. An analysis is made of the marginal costs and savings available by changing the size of the conductor in a cable circuit.

Cornelison, K.E.

1982-07-01T23:59:59.000Z

33

DEVELOPMENT OF HTS CONDUCTORS FOR ELECTRIC POWER APPLICATIONS  

SciTech Connect

Second generation (2G) technologies to fabricate high-performance superconducting wires developed at the Oak Ridge National Laboratory (ORNL) were transferred to American Superconductor via this CRADA. In addition, co-development of technologies for over a decade was done to enable fabrication of commercial high-temperature superconducting (HTS) wires with high performance. The massive success of this CRADA has allowed American Superconductor Corporation (AMSC) to become a global leader in the fabrication of HTS wire and the technology is fully based on the Rolling Assisted Biaxially Textured Substrates (RABiTS) technology invented and developed at ORNL.

Goyal, A.; Rupich, M. (American Superconductor Corp.)

2012-10-23T23:59:59.000Z

34

U.S. Department of Energy and SuperPower, Inc. Increase Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Superconducting (HTS) Cable Project, the world's first use of second-generation HTS wire on the grid. U.S. Department of Energy and SuperPower, Inc. Increase Energy Efficiency...

35

Field Demonstration of a 24-KV Warm Dielectric Cable at Detroit Edison: FY2001 Annual Progress Report  

Science Conference Proceedings (OSTI)

A project sponsored by EPRI, Pirelli Power Cables and Systems, the U.S. Department of Energy, Detroit Edison, and American Superconductor Corporation was initiated in 1998 to install and operate a 24 kV high-temperature superconducting (HTS) power cable in a Detroit Edison substation to serve customer load. The scope of this demonstration will result in the world's first underground installation of an HTS cable system using an existing duct network. Furthermore, the project involves installing the necess...

2002-02-12T23:59:59.000Z

36

Superconducting Cable Termination  

SciTech Connect

Disclosed is a termination that connects high temperature superconducting (HTS) cable immersed in pressurized liquid nitrogen to high voltage and neutral (shield) external bushings at ambient temperature and pressure. The termination consists of a splice between the HTS power (inner) and shield (outer) conductors and concentric copper pipes which are the conductors in the termination. There is also a transition from the dielectric tape insulator used in the HTS cable to the insulators used between and around the copper pipe conductors in the termination. At the warm end of the termination the copper pipes are connected via copper braided straps to the conventional warm external bushings which have low thermal stresses. This termination allows for a natural temperature gradient in the copper pipe conductors inside the termination which enables the controlled flashing of the pressurized liquid coolant (nitrogen) to the gaseous state. Thus the entire termination is near the coolant supply pressure and the high voltage and shield cold bushings, a highly stressed component used in most HTS cables, are eliminated. A sliding seal allows for cable contraction as it is cooled from room temperature to 72-82 K. Seals, static vacuum, and multi-layer superinsulation minimize radial heat leak to the environment.

Sinha, Uday K. (Carrollton, GA); Tolbert, Jerry (Newnan, GA)

2005-08-30T23:59:59.000Z

37

Field Demonstration of a 24-kV Superconducting Cable at Detroit Edison: Final Report  

Science Conference Proceedings (OSTI)

Following up the successful testing of a complete 50 m, 115 kV high temperature superconducting (HTS) power cable system prototype, EPRI, Pirelli Power Cables and Systems, the Department of Energy, Detroit Edison, and American Superconductor Corporation undertook a project to design, install, and operate a 24 kV HTS power cable at Detroit Edison's Frisbie substation to serve customer load. The demonstration cable circuit ran approximately 120 m between the 24 kV bus distribution bus and a 120 kV-24 kV tr...

2004-12-22T23:59:59.000Z

38

Design Concepts for a Superconducting Cable  

Science Conference Proceedings (OSTI)

Superconducting cables carry higher currents and, depending upon the design, can experience substantially lower transmission losses than conventional cables. This report discusses previous approaches to designing superconducting cables, describes the technical issues that must be considered when designing a high-temperature superconductor (HTS) cable, and presents several design concepts for an HTS cable.

1994-09-28T23:59:59.000Z

39

Development of superconducting transmission cable. CRADA final report  

SciTech Connect

The purpose of this Cooperative Research and Development Agreement (CRADA) between Oak Ridge National Laboratory (ORNL) and Southwire Company is to develop the technology necessary to proceed to commercialization of high-temperature superconducting (HTS) transmission cables. Power transmission cables are a promising near-term electric utility application for high-temperature superconductivity. Present HTS wires match the needs for a three-phase transmission cable: (1) the wires must conduct high currents in self-field, (2) there are no high forces developed, and (3) the cables may operate at relatively low current density. The commercially-available HTS wires, in 100-m lengths, make construction of a full three-phase, alternating current (ac) transmission cable possible. If completed through the pre-commercialization phase, this project will result in a new capability for electric power companies. The superconducting cable will enable delivery with greater efficiency, higher power density, and lower costs than many alternatives now on the market. Job creation in the US is expected as US manufacturers supply transmission cables to the expanding markets in Asia and to the densely populated European cities where pipe-type cable is prevalent. Finally, superconducting cables may enable delivery of the new, diverse and distributed sources of electricity that will constitute the majority of new installed electrical generation in the world during the coming decades.

Hawsey, R.; Stovall, J.P. [Oak Ridge National Lab., TN (United States); Hughey, R.L.; Sinha, U.K. [Southwire Co., Carrollton, GA (United States)

1997-10-01T23:59:59.000Z

40

Measurements of AC Losses and Current Distribution in Superconducting Cables  

Science Conference Proceedings (OSTI)

This paper presents our new experimental facility and techniques to measure ac loss and current distribution between the layers for High Temperature Superconducting (HTS) cables. The facility is powered with a 45 kVA three-phase power supply which can provide three-phase currents up to 5 kA per phase via high current transformers. The system is suitable for measurements at any frequency between 20 and 500 Hz to better understand the ac loss mechanisms in HTS cables. In this paper, we will report techniques and results for ac loss measurements carried out on several HTS cables with and without an HTS shielding layer. For cables without a shielding layer, care must be taken to control the effect of the magnetic fields from return currents on loss measurements. The waveform of the axial magnetic field was also measured by a small pick-up coil placed inside a two-layer cable. The temporal current distribution between the layers can be calculated from the waveform of the axial field.

Nguyen, Doan A [Los Alamos National Laboratory (LANL); Ashworth, Stephen P [Los Alamos National Laboratory (LANL); Duckworth, Robert C [ORNL; Carter, Bill [AMSC; Fleshler, Steven [AMER Superconductor Corp, Devens, MA 01434

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Microsoft Word - 2 21 08 DOE-SuperPower.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the grid. This 350-meter HTS cable runs between the Riverside and Menands Substations in Albany, New York. HTS cables encounter essentially no resistance in electricity flow,...

42

Ac loss calorimeter for three-phase cable  

SciTech Connect

A calorimeter for measuring ac losses in meter-long lengths of HTS superconducting power transmission line cables is described. The calorimeter, which is based on a temperature difference technique, has a precision of 1 mW and measures single, two-phase (coupling), and three-phase losses. The measurements show significant coupling losses between phases.

Daney, D.E.; Boenig, H.J.; Maley, M.P.; McMurry, D.E.; DeBlanc, B.G. [Los Alamos National Lab., NM (United States). Superconductivity Technology Center

1996-10-01T23:59:59.000Z

43

Power-cable-carrier control (PC/sup 3/) system  

DOE Green Energy (OSTI)

A control system has been developed that uses a carrier signal imposed on an existing ac power circuit to transmit commands. This system was specifically developed to control an entire solar collector field by sending sun-tracking information to the trough collectors or by commanding them to assume safe positions (STOW) if out-of-limit conditions were encountered. Objectives were to develop a control system that operates reliably and has enough functions to control an entire collector field, yet do it at less cost than for conventional approaches. Development, design, operating characteristics, and field testing and results of the new system, the Power Cable Carrier Control (PC/sup 3/) System are described.

Alvis, R.L.; Wally, K.; Rosborough, J.R.

1981-04-01T23:59:59.000Z

44

Research on Fault Location of Power Cable with Wavelet Analysis  

Science Conference Proceedings (OSTI)

This article researChes for 10kV transmission cable form the ground substation to the underground central substation in the coal mine. The transient traveLing wave signal of the cable fault is disposed by the wavelet transformation based on the cable ... Keywords: Wavelet analysis, Fault Location, TraveLing wave

Ji-meng Zhang; Shuo Liang

2011-08-01T23:59:59.000Z

45

Plant Support Engineering: Aging Management Program Development Guidance for Instrument and Control Cable Systems for Nuclear Power Plants  

Science Conference Proceedings (OSTI)

This document provides guidance for developing and implementing a cable aging management program for low-voltage instrument and control cable circuits in nuclear power plants. Guidance is provided for identifying cables located in adverse localized environments and determining if those environments have caused significant cable circuit degradation.

2010-11-29T23:59:59.000Z

46

U.S. Department of Energy and SuperPower, Inc. Increase Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and SuperPower, Inc. Increase Energy and SuperPower, Inc. Increase Energy Efficiency in the Nation's Electric Grid U.S. Department of Energy and SuperPower, Inc. Increase Energy Efficiency in the Nation's Electric Grid February 21, 2008 - 11:29am Addthis $27 Million Project Demonstrates Advanced Superconductivity Technology ALBANY, NY- The U.S. Department of Energy (DOE) and SuperPower, Inc. today commemorated the Albany High-Temperature Superconducting (HTS) Cable Project, the world's first use of second-generation HTS wire on the grid. This 350-meter HTS cable runs between the Riverside and Menands Substations in Albany, New York. HTS cables encounter essentially no resistance in electricity flow, which increases efficiency by eliminating 7-10 percent of the energy losses of conventional copper-based cables. DOE's over $13.5

47

U.S. Department of Energy and SuperPower, Inc. Increase Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy and SuperPower, Inc. Increase Energy Department of Energy and SuperPower, Inc. Increase Energy Efficiency in the Nation's Electric Grid U.S. Department of Energy and SuperPower, Inc. Increase Energy Efficiency in the Nation's Electric Grid February 21, 2008 - 11:46am Addthis $27 Million Project Demonstrates Advanced Superconductivity Technology ALBANY, NY- The U.S. Department of Energy (DOE) and SuperPower, Inc. today commemorated the Albany High-Temperature Superconducting (HTS) Cable Project, the world's first use of second-generation HTS wire on the grid. This 350-meter HTS cable runs between the Riverside and Menands Substations in Albany, New York. HTS cables encounter essentially no resistance in electricity flow, which increases efficiency by eliminating 7-10 percent of the energy losses of conventional copper-based cables. DOE's over $13.5

48

Dielectrometry measurements of moisture diffusion and temperature dynamics in oil impregnated paper insulated electric power cables  

E-Print Network (OSTI)

Paper insulated lead covered (PILC) cables have played an important role in underground power distribution for a hundred years. Replacing aged PILC before failure is critical to managing power distribution. Three prominent ...

Thomas, Zachary M. (Zachary Michael)

2007-01-01T23:59:59.000Z

49

Underwater-cable power-transmission system: bottom segment design  

DOE Green Energy (OSTI)

After a survey of the state of the art for bottom cables, some possible configurations are considered for candidate OTEC sites. General considerations on laying and embedding are discussed, and solutions are considered. Optimization of cable dimensions and the problem of flexible joints are covered. The state of the art of cable installation and repair is reviewed and discussed with reference to the representative OTEC sites. Costs for shore terminal stations are evaluated. (LEW)

Not Available

1978-11-01T23:59:59.000Z

50

Electromagnetic field of the large power cables and impact on the human health  

Science Conference Proceedings (OSTI)

In this work we survey our research on domain decomposition and related algorithms for large power electric cables and the impact on the human health. The equations that describe the behaviour of the fields in electromagnetic devices are coupled because ... Keywords: bioheat equation, coupled fields, electrical cables, finite element method

Daniela Crstea

2012-01-01T23:59:59.000Z

51

Electromagnetic field of the large power cables and interaction with the human body  

Science Conference Proceedings (OSTI)

In this work we survey our research on domain decomposition and related algorithms for large power electric cables and the impact on the human health. The equations that describe the behaviour of the fields in electromagnetic devices are coupled because ... Keywords: bioheat equation, coupled fields, electrical cables, finite element method

Daniela Crstea

2010-07-01T23:59:59.000Z

52

Determining Remaining Useful Life of Aging Cables in Nuclear Power Plants Interim Study FY13  

Science Conference Proceedings (OSTI)

The most important criterion for cable performance is its ability to withstand a design-basis accident. With nearly 1000 km of power, control, instrumentation, and other cables typically found in an NPP, it would be a significant undertaking to inspect all of the cables. Degradation of the cable jacket, electrical insulation, and other cable components is a key issue that is likely to affect the ability of the currently installed cables to operate safely and reliably for another 20 to 40 years beyond the initial operating life. The development of one or more nondestructive evaluation (NDE) techniques and supporting models that could assist in determining the remaining life expectancy of cables or their current degradation state would be of significant interest. The ability to nondestructively determine material and electrical properties of cable jackets and insulation without disturbing the cables or connections has been deemed essential. Currently, the only technique accepted by industry to measure cable elasticity (the gold standard for determining cable insulation degradation) is the indentation measurement. All other NDE techniques are used to find flaws in the cable and do not provide information to determine the current health or life expectancy. There is no single NDE technique that can satisfy all of the requirements needed for making a life-expectancy determination, but a wide range of methods have been evaluated for use in NPPs as part of a continuous evaluation program. The commonly used methods are indentation and visual inspection, but these are only suitable for easily accessible cables. Several NDE methodologies using electrical techniques are in use today for flaw detection but there are none that can predict the life of a cable. There are, however, several physical and chemical ptoperty changes in cable insulation as a result of thermal and radiation damage. In principle, these properties may be targets for advanced NDE methods to provide early warning of aging and degradation. Examples of such key indicators include changes in chemical structure, mechanical modulus, and dielectric permittivity. While some of these indicators are the basis of currently used technologies, there is a need to increase the volume of cable that may be inspected with a single measurement, and if possible, to develop techniques for in-situ inspection (i.e., while the cable is in operation). This is the focus of the present report.

Simmons, Kevin L.; Fifield, Leonard S.; Westman, Matthew P.; Ramuhalli, Pradeep; Pardini, Allan F.; Tedeschi, Jonathan R.; Jones, Anthony M.

2013-09-27T23:59:59.000Z

53

Insulating fault diagnosis of XLPE power cables using multi-parameter based on artificial neural networks  

Science Conference Proceedings (OSTI)

An online monitoring system of XLPE power cables was introduced in the research at first. It could detect the parameters, including partial discharge, dielectric loss, and central insulation resistance and sheathing resistance. The BP artificial neural ...

Xiaolin Chen; Yonghong Cheng; Zhelei Zhu; Bo Yue; Xiaojun Xie

2005-05-01T23:59:59.000Z

54

Integrated head package cable carrier for a nuclear power plant  

DOE Patents (OSTI)

A cabling arrangement is provided for a nuclear reactor located within a containment. Structure inside the containment is characterized by a wall having a near side surrounding the reactor vessel defining a cavity, an operating deck outside the cavity, a sub-space below the deck and on a far side of the wall spaced from the near side, and an operating area above the deck. The arrangement includes a movable frame supporting a plurality of cables extending through the frame, each connectable at a first end to a head package on the reactor vessel and each having a second end located in the sub-space. The frame is movable, with the cables, between a first position during normal operation of the reactor when the cables are connected to the head package, located outside the sub-space proximate the head package, and a second position during refueling when the cables are disconnected from the head package, located in the sub-space. In a preferred embodiment, the frame straddles the top of the wall in a substantially horizontal orientation in the first position, pivots about an end distal from the head package to a substantially vertically oriented intermediate position, and is guided, while remaining about vertically oriented, along a track in the sub-space to the second position.

Meuschke, Robert E. (Monroeville, PA); Trombola, Daniel M. (Murrysville, PA)

1995-01-01T23:59:59.000Z

55

Number of lightning discharges causing damage to lightning arrester cables for aerial transmission lines in power systems  

SciTech Connect

Damage by lightning discharges to lightning arrester cables for 110-175 kV aerial transmission lines is analyzed using data from power systems on incidents with aerial transmission lines over a ten year operating period (1997-2006). It is found that failures of lightning arrester cables occur when a tensile force acts on a cable heated to the melting point by a lightning current. The lightning currents required to heat a cable to this extent are greater for larger cable cross sections. The probability that a lightning discharge will develop decreases as the amplitude of the lightning current increases, which greatly reduces the number of lightning discharges which damage TK-70 cables compared to TK-50 cables. In order to increase the reliability of lightning arrester cables for 110 kV aerial transmission lines, TK-70 cables should be used in place of TK-50 cables. The number of lightning discharges per year which damage lightning arrester cables is lowered when the density of aerial transmission lines is reduced within the territory of electrical power systems. An approximate relationship between these two parameters is obtained.

Nikiforov, E. P. [Electric Power Scientific Research Institute (VNIIE), branch of OAO 'NTTs Elektroenergetika' (Russian Federation)

2009-07-15T23:59:59.000Z

56

Field Demonstration of a 24-kV Warm Dielectric Superconducting Cable at Detroit Edison: FY2003 Annual Progress Report  

Science Conference Proceedings (OSTI)

A project sponsored by EPRI, Pirelli Power Cables and Systems, the Department of Energy, Detroit Edison, and American Superconductor Corporation was initiated in 1998 to install and operate a 24 kV HTS power cable in a Detroit Edison substation to serve customer load. The previous years of activity have focused on design, testing, manufacturing, and installation of the cable system as described in the FY2000 and FY2001 status reports. The FY2002 status report focused on leak detection. The cornerstone of...

2004-03-30T23:59:59.000Z

57

Nuclear power plant cable materials : review of qualification and currently available aging data for margin assessments in cable performance.  

SciTech Connect

A selective literature review was conducted to assess whether currently available accelerated aging and original qualification data could be used to establish operational margins for the continued use of cable insulation and jacketing materials in nuclear power plant environments. The materials are subject to chemical and physical degradation under extended radiationthermal- oxidative conditions. Of particular interest were the circumstances under which existing aging data could be used to predict whether aged materials should pass loss of coolant accident (LOCA) performance requirements. Original LOCA qualification testing usually involved accelerated aging simulations of the 40-year expected ambient aging conditions followed by a LOCA simulation. The accelerated aging simulations were conducted under rapid accelerated aging conditions that did not account for many of the known limitations in accelerated polymer aging and therefore did not correctly simulate actual aging conditions. These highly accelerated aging conditions resulted in insulation materials with mostlyinert' aging processes as well as jacket materials where oxidative damage dropped quickly away from the air-exposed outside jacket surface. Therefore, for most LOCA performance predictions, testing appears to have relied upon heterogeneous aging behavior with oxidation often limited to the exterior of the cable cross-section - a situation which is not comparable with the nearly homogenous oxidative aging that will occur over decades under low dose rate and low temperature plant conditions. The historical aging conditions are therefore insufficient to determine with reasonable confidence the remaining operational margins for these materials. This does not necessarily imply that the existing 40-year-old materials would fail if LOCA conditions occurred, but rather that unambiguous statements about the current aging state and anticipated LOCA performance cannot be provided based on original qualification testing data alone. The non-availability of conclusive predictions for the aging conditions of 40-year-old cables implies that the same levels of uncertainty will remain for any re-qualification or extended operation of these cables. The highly variable aging behavior of the range of materials employed also implies that simple, standardized aging tests are not sufficient to provide the required aging data and performance predictions for all materials. It is recommended that focused studies be conducted that would yield the material aging parameters needed to predict aging behaviors under low dose, low temperature plant equivalent conditions and that appropriately aged specimens be prepared that would mimic oxidatively-aged 40- to 60- year-old materials for confirmatory LOCA performance testing. This study concludes that it is not sufficient to expose materials to rapid, high radiation and high temperature levels with subsequent LOCA qualification testing in order to predictively quantify safety margins of existing infrastructure with regard to LOCA performance. We need to better understand how cable jacketing and insulation materials have degraded over decades of power plant operation and how this aging history relates to service life prediction and the performance of existing equipment to withstand a LOCA situation.

Celina, Mathias Christopher; Gillen, Kenneth Todd; Lindgren, Eric Richard

2013-05-01T23:59:59.000Z

58

Nuclear power plant cable materials : review of qualification and currently available aging data for margin assessments in cable performance.  

Science Conference Proceedings (OSTI)

A selective literature review was conducted to assess whether currently available accelerated aging and original qualification data could be used to establish operational margins for the continued use of cable insulation and jacketing materials in nuclear power plant environments. The materials are subject to chemical and physical degradation under extended radiationthermal- oxidative conditions. Of particular interest were the circumstances under which existing aging data could be used to predict whether aged materials should pass loss of coolant accident (LOCA) performance requirements. Original LOCA qualification testing usually involved accelerated aging simulations of the 40-year expected ambient aging conditions followed by a LOCA simulation. The accelerated aging simulations were conducted under rapid accelerated aging conditions that did not account for many of the known limitations in accelerated polymer aging and therefore did not correctly simulate actual aging conditions. These highly accelerated aging conditions resulted in insulation materials with mostlyinert' aging processes as well as jacket materials where oxidative damage dropped quickly away from the air-exposed outside jacket surface. Therefore, for most LOCA performance predictions, testing appears to have relied upon heterogeneous aging behavior with oxidation often limited to the exterior of the cable cross-section - a situation which is not comparable with the nearly homogenous oxidative aging that will occur over decades under low dose rate and low temperature plant conditions. The historical aging conditions are therefore insufficient to determine with reasonable confidence the remaining operational margins for these materials. This does not necessarily imply that the existing 40-year-old materials would fail if LOCA conditions occurred, but rather that unambiguous statements about the current aging state and anticipated LOCA performance cannot be provided based on original qualification testing data alone. The non-availability of conclusive predictions for the aging conditions of 40-year-old cables implies that the same levels of uncertainty will remain for any re-qualification or extended operation of these cables. The highly variable aging behavior of the range of materials employed also implies that simple, standardized aging tests are not sufficient to provide the required aging data and performance predictions for all materials. It is recommended that focused studies be conducted that would yield the material aging parameters needed to predict aging behaviors under low dose, low temperature plant equivalent conditions and that appropriately aged specimens be prepared that would mimic oxidatively-aged 40- to 60- year-old materials for confirmatory LOCA performance testing. This study concludes that it is not sufficient to expose materials to rapid, high radiation and high temperature levels with subsequent LOCA qualification testing in order to predictively quantify safety margins of existing infrastructure with regard to LOCA performance. We need to better understand how cable jacketing and insulation materials have degraded over decades of power plant operation and how this aging history relates to service life prediction and the performance of existing equipment to withstand a LOCA situation.

Celina, Mathias Christopher; Gillen, Kenneth Todd; Lindgren, Eric Richard

2013-05-01T23:59:59.000Z

59

Federal Power Act section 202(c) - Cross-Sound Cable Company, August 2003 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 3 Federal Power Act section 202(c) - Cross-Sound Cable Company, August 2003 On August 14, 2003, in response to the blackout on that day in the Northeast and Upper Midwest areas of the United States, as well as portion of Canada, the New York Independent System Operator and ISO New England were directed to require Cross-Sound Cable Company to operate the Cross-Sound Cable and related facilities. The Expiration date on that order was September 1, 2003, but on August 28, 2003, it was extended "until such time as emergency identified in the order ceases to exist." An order terminating the emergency order was issued on May 7, 2004. 202(c) order 202-03-1 August 14, 2003 - CSC.pdf 202(c) order 202-03-2 August 28, 2003 - CSC.pdf 202(c) order 202-03-3 September 26, 2003 - CSC.pdf

60

High Temperature Superconductivity -- A Joint Feasibility Study for a Power Application with High-Temperature Superconducting Cable by Peco Energy  

Science Conference Proceedings (OSTI)

Practical realization of high temperature superconductivity (HTS) technology is within the electric power industry's reach. This report documents a feasibility study co-sponsored by PECO Energy Company (PECO) to assess a real-world underground transmission application of this technology.

1998-11-17T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

High Temperature Superconductivity -- A Joint Feasibility Study for a Power Application with High-Temperature Superconducting Cable by South Carolina  

Science Conference Proceedings (OSTI)

Practical realization of high temperature superconductivity (HTS) technology is within the reach of the electric power industry. This report documents a feasibility study co-sponsored by South Carolina Electric and Gas Company (SCE&G) to assess a real-world underground transmission application of this technology.

1998-11-17T23:59:59.000Z

62

Conceptual design of air-core superconducting power transformer for cable transmission system  

Science Conference Proceedings (OSTI)

The air-core superconducting transformer, which has a large magnetizing current, has been proposed as a power transformer that has the function as a shunt reactor. In this paper, the basic design procedure for the air-core superconducting transformer is presented. By using this procedure, 500/{radical}(3kV)--66/{radical}(3kV)--300 MVA single phase air-core transformer is designed for a model cable transmission system. Then, the performance of this transformer in the model cable transmission system is analyzed, and it is confirmed that the air-core superconducting transformer can function as a shunt reactor in addition to the principal as a power transformer.

Yamaguchi, Hiroshi; Sato, Yukihiko; Kataoka, Teruo [Tokyo Inst. of Tech. (Japan). Dept. of Electrical and Electronic Engineering

1996-04-01T23:59:59.000Z

63

Plant Support Engineering: Aging Management Program Development Guidance for AC and DC Low-Voltage Power Cable Systems for Nuclear P ower Plants  

Science Conference Proceedings (OSTI)

Regulatory and management concern regarding the reliability of low-voltage power cable systems at nuclear plants has been increasing for the past 510 years. The staff of the United States Nuclear Regulatory Commission are concerned that wetted (up to and including submergence) low-voltage power cable circuits may be degrading to the point at which multiple cable circuits may fail when called on to perform functions affecting safety. Utility managers are concerned that cables may fail, causing adverse sa...

2010-06-02T23:59:59.000Z

64

Procedures for the Examination of the Metals Used in Electrical Power Cables  

Science Conference Proceedings (OSTI)

This report provides detailed procedures for the examination of the metallic components in paper-insulated nonpressurized electrical power cables. The scope includes lead and lead alloy sheaths, splices and repair sleeves, plumbed wipes, and both copper and aluminum stranded and solid aluminum conductors. Examination of these components is usually required following equipment failure or breakdown due to faults developing from defective, incorrect, or adverse manufacturing, installation, or service condit...

2004-12-15T23:59:59.000Z

65

Aging Cable Assessment Guideline  

Science Conference Proceedings (OSTI)

Medium- and low-voltage cables have provided reasonable service in power plants. However, there is a concern that cables that have experienced long periods of stressed service and especially wet service might degrade and fail in service. Because most plants have had few problems with cables, little on-staff experience with cables exists at most sites. This report provides information that will be of practical use when assessing cable longevity in adverse environments and service conditions that may ...

2013-12-17T23:59:59.000Z

66

Microminiaturized minimally invasive intravascular micro-mechanical systems powered and controlled via fiber-optic cable  

DOE Patents (OSTI)

A micro-mechanical system for medical procedures is constructed in the basic form of a catheter having a distal end for insertion into and manipulation within a body and a near end providing for a user to control the manipulation of the distal end within the body. A fiberoptic cable is disposed within the catheter and having a distal end proximate to the distal end of the catheter and a near end for external coupling of laser light energy. A microgripper is attached to the distal end of the catheter and providing for the gripping or releasing of an object within the body. A laser-light-to-mechanical-power converter is connected to receive laser light from the distal end of the fiberoptic cable and connected to mechanically actuate the microgripper.

Fitch, Joseph P. (Livermore, CA); Hagans, Karla (Livermore, CA); Clough, Robert (Danville, CA); Matthews, Dennis L. (Moss Beach, CA); Lee, Abraham P. (Walnut Creek, CA); Krulevitch, Peter A. (Los Altos, CA); Benett, William J. (Livermore, CA); Da Silva, Luiz (Danville, CA); Celliers, Peter M. (Berkeley, CA)

1998-01-01T23:59:59.000Z

67

Microminiaturized minimally invasive intravascular micro-mechanical systems powered and controlled via fiber-optic cable  

DOE Patents (OSTI)

A micro-mechanical system for medical procedures is constructed in the basic form of a catheter having a distal end for insertion into and manipulation within a body and a near end providing for a user to control the manipulation of the distal end within the body. A fiber-optic cable is disposed within the catheter and having a distal end proximate to the distal end of the catheter and a near end for external coupling of laser light energy. A microgripper is attached to the distal end of the catheter and providing for the gripping or releasing of an object within the body. A laser-light-to-mechanical-power converter is connected to receive laser light from the distal end of the fiber-optic cable and connected to mechanically actuate the microgripper. 22 figs.

Fitch, J.P.; Hagans, K.; Clough, R.; Matthews, D.L.; Lee, A.P.; Krulevitch, P.A.; Benett, W.J.; Silva, L. Da; Celliers, P.M.

1998-03-03T23:59:59.000Z

68

Papers on HTS  

NLE Websites -- All DOE Office Websites (Extended Search)

visit Superconducting Magnet Division Webpage on HTS Magnet visit Superconducting Magnet Division Webpage on HTS Magnet Program at BNL. List of publications on HTS with Ramesh Gupta as the major author (unless noted): R. Gupta, et al., "High Field HTS Solenoid for a Muon Collider – Demonstrations, Challenges and Strategies, MT23, July 2013", presented at MT23, (talk) R. Gupta, et al., "Design Construction and Test Results of a HTS Solenoid for Energy Recovery Linac", 2011 Particle Accelerator Conference, New York (POSTER). ***BNL Papers Submitted on HTS at PAC2011*** R. Gupta, M. Anerella, A. Ghosh, H. Kirk, R. Palmer, S. Plate, W. Sampson, Y. Shiroyanagi, P. Wanderer, B. Brandt, D. Cline, A. Garren, J. Kolonko, R. Scanlan, R. Weggel, "High field HTS R&D solenoid for muon collider",

69

On-line partial discharge monitoring system and data processing using WTST-NST filter for high voltage power cable  

Science Conference Proceedings (OSTI)

Defects inside insulation of HV XLPE cable accessories can lead to partial discharge (PD) activity. When PD activity happens, leakage current may flow through the grounded line. To acquire the PD current signal, one practicable and effective method is ... Keywords: MRD-MRR algorithm, adaptive WTST-NST filter, condition based maintenance(CBM), on-line monitoring, partial discharge, power cable, stationary noise interference

Hui Wang; Chengjun Huang; Li Zhang; Yong Qian; Junhua Liu; Linpeng Yao; Canxin Guo; Xiuchen Jiang

2009-07-01T23:59:59.000Z

70

Plant Engineering: Electrical Cable Test Applicability Matrix for Nuclear Power Plants  

Science Conference Proceedings (OSTI)

When assessing cable degradation or failure assessment, using the correct test and assessment methodology is critical to obtaining the correct answer. Many in-plant and laboratory tests exist. Some apply to the cable types used in nuclear plants. Some apply only to distribution cables. Most have pertinence to only one issue or even one cable design. This report provides a correlation between specific cable problems and the appropriate tests that may be used to resolve the issue. The report starts with su...

2011-12-23T23:59:59.000Z

71

The US market for high-temperature superconducting wire in transmission cable applications  

SciTech Connect

Telephone interviews were conducted with 23 utility engineers concerning the future prospects for high-temperature superconducting (HTS) transmission cables. All have direct responsibility for transmission in their utility, most of them in a management capacity. The engineers represented their utilities as members of the Electric Power Research Institute`s Underground Transmission Task Force (which has since been disbanded). In that capacity, they followed the superconducting transmission cable program and are aware of the cryogenic implications. Nineteen of the 23 engineers stated the market for underground transmission would grow during the next decade. Twelve of those specified an annual growth rate; the average of these responses was 5.6%. Adjusting that figure downward to incorporate the remaining responses, this study assumes an average growth rate of 3.4%. Factors driving the growth rate include the difficulty in securing rights-of-way for overhead lines, new construction techniques that reduce the costs of underground transmission, deregulation, and the possibility that public utility commissions will allow utilities to include overhead costs in their rate base. Utilities have few plans to replace existing cable as preventive maintenance, even though much of the existing cable has exceeded its 40-year lifetime. Ten of the respondents said the availability of a superconducting cable with the same life-cycle costs as a conventional cable and twice the ampacity would induce them to consider retrofits. The respondents said a cable with those characteristics would capture 73% of their cable retrofits.

Forbes, D.

1996-04-01T23:59:59.000Z

72

Reflective HTS switch  

DOE Patents (OSTI)

A HTS switch includes a HTS conductor for providing a superconducting path for an electrical signal and an serpentine wire actuator for controllably heating a portion of the conductor sufficiently to cause that portion to have normal, and not superconducting, resistivity. Mass of the portion is reduced to decrease switching time.

Martens, Jon S. (Albuquerque, NM); Hietala, Vincent M. (Placitas, NM); Hohenwarter, Gert K. G. (Madison, WI)

1994-01-01T23:59:59.000Z

73

Reflective HTS switch  

DOE Patents (OSTI)

A HTS (High Temperature Superconductor) switch includes a HTS conductor for providing a superconducting path for an electrical signal and an serpentine wire actuator for controllably heating a portion of the conductor sufficiently to cause that portion to have normal, and not superconducting, resistivity. Mass of the portion is reduced to decrease switching time. 6 figs.

Martens, J.S.; Hietala, V.M.; Hohenwarter, G.K.G.

1994-09-27T23:59:59.000Z

74

Plant Support Engineering: Aging Management Program Guidance for Medium- Voltage Cable Systems for Nuclear Power Plants  

Science Conference Proceedings (OSTI)

Regulatory and management concern regarding the reliability of medium-voltage cable systems at nuclear plants has been increasing for 510 years. The staff of the U.S. Nuclear Regulatory Commission (NRC) are concerned that wetted (up to and including submergence) medium-voltage cable circuits may be degrading to the point at which multiple cable circuits may fail when called on to perform functions affecting safety. Utility managers are concerned that cables may fail, causing adverse safety consequences ...

2010-06-02T23:59:59.000Z

75

Ground potential rise characteristics of urban step-down substations fed by power cables - A practical example  

Science Conference Proceedings (OSTI)

This paper shows some special ground potential rise characteristics of substations fed by power cables. These characteristics were detected during the study of the interconnected ground system of 14 step-down urban substations fed by the 138 kV underground cable network serving the South Zone of Rio de Janeiro city in Brazil. As this type of system is very common in large cities, the subject can be of general interest for the industry. It was verified that when a fault occurs at a ''cable substation'' (a substation fed exclusively by power cables), almost no ground potential effects were detected at the faulted substation or at the other ''cable substations'' of the 138 kV network. However, high values of ground potential occurred at the ''transition substations'' (substations in which the power cables are connected to overhead 138 kV transmission lines, with steel groundwires). That ground potential was enough to produce shocks and equipment damage in certain ''transition substations''. It was verified that this problem has no relation with potential transfer. The paper shows also that the utilization of overhead lines with ACSR groundwires on the initial spans closer to the ''transition substation'' would be enough to avoid the problem. Even if the ACSR conductor is used only at the initial section of one of the lines, a reduction of the problem would be obtained. The paper shows also that the utilization of ACSR ground-wires near the ''transition substations'' contributes to reduce the amount of the copper necessary to control step, touch and mess potentials in these substations. Additional mitigation procedures are also examined in the paper.

Sobral, S.T. (IESA - Internacional de Engenharia S.A. (BR)); Barbosa, J.O.; Numes, J.V.C.; Chinelli, E.; Netto, A.F. (Light - Servicos de Eletricidade S.A. (BR)); Costa, V.S.; Campos, J.H. (Eletrobras - Centrais Eletricas, Brasileiras (BR))

1988-10-01T23:59:59.000Z

76

Application of Fiber-Optic Distributed Temperature Sensing to Power Transmission Cables at BC Hydro  

Science Conference Proceedings (OSTI)

This report describes applications of distributed temperature sensing methods to underground and submarine cables at BC Hydro over a five-year period.

2002-05-31T23:59:59.000Z

77

Prediction of insulation degradation of distribution power cables based on chemical analysis and electrical measurements.  

E-Print Network (OSTI)

??This thesis deals with the prediction of medium voltage cable insulation condition. Different kinds of electrical measurements and chemical analyses are tested to find out (more)

Hyvnen, Petri

2008-01-01T23:59:59.000Z

78

Program on Technology Innovation: Grain Growth in Lead Alloy Sheathing and Its Influence on the Life of Lead-Sheathed Power Cables  

Science Conference Proceedings (OSTI)

Urban electric utilities installed large quantities of paper-insulated, lead-covered (PILC) power cable for medium-voltage distribution until about 50 years ago. Lead grain growth and re-crystallization occur with the aging of the lead sheaths of these cables and are known to affect cable sheath life. This report describes re-crystallization and grain growth in lead and lead alloys, emphasizing cable-sheath alloys used in North America and how grain size influences tensile, fatigue, and creep properties ...

2007-05-31T23:59:59.000Z

79

Review of nuclear power plant safety cable aging studies with recommendations for improved approaches and for future work.  

Science Conference Proceedings (OSTI)

Many U. S. nuclear power plants are approaching 40 years of age and there is a desire to extend their life for up to 100 total years. Safety-related cables were originally qualified for nuclear power plant applications based on IEEE Standards that were published in 1974. The qualifications involved procedures to simulate 40 years of life under ambient power plant aging conditions followed by simulated loss of coolant accident (LOCA). Over the past 35 years or so, substantial efforts were devoted to determining whether the aging assumptions allowed by the original IEEE Standards could be improved upon. These studies led to better accelerated aging methods so that more confident 40-year lifetime predictions became available. Since there is now a desire to potentially extend the life of nuclear power plants way beyond the original 40 year life, there is an interest in reviewing and critiquing the current state-of-the-art in simulating cable aging. These are two of the goals of this report where the discussion is concentrated on the progress made over the past 15 years or so and highlights the most thorough and careful published studies. An additional goal of the report is to suggest work that might prove helpful in answering some of the questions and dealing with some of the issues that still remain with respect to simulating the aging and predicting the lifetimes of safety-related cable materials.

Gillen, Kenneth Todd; Bernstein, Robert

2010-11-01T23:59:59.000Z

80

Superconducting Cable Construction and Testing  

Science Conference Proceedings (OSTI)

Superconducting cables, carrying three to five times more power than conventional cables, can meet increasing power demands in urban areas via retrofit applications. These high capacity cables will allow utilities to greatly enhance capacity, thereby giving the grid more flexibility and reliability. This report describes the development, construction, and testing of a superconducting cable system. Background In the late eighties, a new class of ceramic oxides was discovered with superconducting propertie...

2000-11-10T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Control signal transmission through power supply cables of a 3-phase PWM motor  

E-Print Network (OSTI)

Modem process control systems often employ accurate position or speed controlled PWM motors, which require feedback data for the drive control loop. Current methods require an independently shielded cable for feedback data ...

Mendez, Jose A. (Jose Antonio Mendez Alcazar)

2006-01-01T23:59:59.000Z

82

Federal Power Act section 202(c) - Cross-Sound Cable Company, August 2002  

Energy.gov (U.S. Department of Energy (DOE))

On August 16, 2002, due to concerns regarding the availability of electricity on Long Island in the State of New York, a 202(c) order was issued directing Cross-Sound Cable Company to operate the...

83

Establishing a low-power fiber optic cable facility. Final report  

SciTech Connect

The capability for the manufacture of fiber optic cables for low- energy applications was established at AlliedSignal Inc., Kansas City Division. The processes for mounting the most common optic connectors were developed and characterized.

Belarde, E.

1994-05-01T23:59:59.000Z

84

Investigation of broadband over power line channel capacity of shipboard power system cables for ship communications networks  

E-Print Network (OSTI)

Broadband over Power Line (BPL) technology has garnered significant attention lately due to recent advancements in solid state technologies and channel coding schemes. The successful application of BPL technology for in-home automation and networking has led to suggestions of applying BPL in other systems including ships. The application of BPL technology using the Shipboard Power System (SPS) as a potential communications network for ship automation systems has been proposed, to achieve recent U.S. Navy ship management concepts geared toward reducing ship manning while improving operational efficiency. This thesis presents an analytical model developed to examine the channel response characteristics and estimated throughput capacity of SPS cables. The work used a multiconductor transmission line theory based approach to model the channel response of SPS distribution lines and estimated the channel throughput capacity using a water-filling communication technique. This work found that BPL using the SPS holds a strong potential for use as a communications network for ship communication systems.

Akinnikawe, Ayorinde

2008-12-01T23:59:59.000Z

85

2298 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 13, NO. 2, JUNE 2003 Cryogenic Cooling Temperature of HTS Transformers  

E-Print Network (OSTI)

, thermal optimization, transformer. I. INTRODUCTION MAIN advantages of HTS power transformers are the small Temperature of HTS Transformers for Compactness and Efficiency Ho-Myung Chang, Yeon Suk Choi, Steven W. Van- genic cooling temperature of HTS transformer is presented, aiming simultaneously at compactness

Chang, Ho-Myung

86

Failure Analysis of a 345 kV High-Pressure, Fluid-Filled Cable Insulated with Laminated Paper Polypropylene at New York Power Author ity  

Science Conference Proceedings (OSTI)

Three cable pieces of a 345-kV high-pressure, fluid-filled, laminated paper151polypropylene (LPP) cable, each nearly 3 ft in length, were received from New York Power Authority in January 2010. The Detroit Edison Company performed the dissection and analysis to address the cause(s) of the failure that occurred in late December 2009 and that was experienced by this 10.1 circuit-mile cable that had been energized in service in May 1991. One of the pieces contained the failure, and the other two were adjace...

2011-02-28T23:59:59.000Z

87

Light Water Reactor Sustainability (LWRS) Program Non-Destructive Evaluation (NDE) R&D Roadmap for Determining Remaining Useful Life of Aging Cables in Nuclear Power Plants  

SciTech Connect

The purpose of the non-destructive evaluation (NDE) R&D Roadmap for Cables is to support the Materials Aging and Degradation (MAaD) R&D pathway. The focus of the workshop was to identify the technical gaps in detecting aging cables and predicting their remaining life expectancy. The workshop was held in Knoxville, Tennessee, on July 30, 2012, at Analysis and Measurement Services Corporation (AMS) headquarters. The workshop was attended by 30 experts in materials, electrical engineering, U.S. Nuclear Regulatory Commission (NRC), U.S. Department of Energy (DOE) National Laboratories (Oak Ridge National Laboratory, Pacific Northwest National Laboratory, Argonne National Laboratory, and Idaho National Engineering Laboratory), NDE instrumentation development, universities, commercial NDE services and cable manufacturers, and Electric Power Research Institute (EPRI). The motivation for the R&D roadmap comes from the need to address the aging management of in-containment cables at nuclear power plants (NPPs).

Simmons, Kevin L.; Ramuhalli, Pradeep; Brenchley, David L.; Coble, Jamie B.; Hashemian, Hash; Konnik, Robert; Ray, Sheila

2012-09-14T23:59:59.000Z

88

NIST Debuts Superconducting Quantum Computing Cable  

Science Conference Proceedings (OSTI)

... electronic vibrations on a microfabricated aluminum cable, demonstrating a new component for potential ultra-powerful quantum computers of the ...

2013-07-08T23:59:59.000Z

89

Guide for the Application of Distributed Fiber Optic Sensing to Underground Power Cables  

Science Conference Proceedings (OSTI)

BackgroundTemperature measurements using junctions of two dissimilar metals a thermocouple have been around since the 1800s. The thermocouple was relatively simple to configure, rugged, and reliable, and has been applied for many years to all sorts of process controls, as well as used for temperature monitoring on underground cable systems since the 1950s. Thermocouples would be fitted to locations that were anticipated to be hot spots. Unfortunately, ...

2012-11-14T23:59:59.000Z

90

Plant Engineering, Aging Management Program Guidance for Medium-Voltage Cable Systems for Nuclear Power Plants, Revision 1  

Science Conference Proceedings (OSTI)

This report was prepared in response to regulatory and management concern regarding the reliability of medium-voltage cable systems at nuclear plants. The staff of the U.S. Nuclear Regulatory Commission (NRC) have been concerned that wetted (up to and including submergence) medium-voltage cable circuits may be degrading to the point at which multiple cable circuits may fail when called on to perform functions affecting safety. A utility managers concern is that cables may fail, causing ...

2013-06-03T23:59:59.000Z

91

Wire Making Techniques - HTS Coated Conductors - Fact Sheet ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wire Making Techniques - HTS Coated Conductors - Fact Sheet Wire Making Techniques - HTS Coated Conductors - Fact Sheet Wire Making Techniques - HTS Coated Conductors - Fact Sheet...

92

Demonstration of Commissioning Tests for Extra-High Voltage Cross-Linked Polyethylene Cable Systems at Los Angeles Department of Wat er and Power  

Science Conference Proceedings (OSTI)

Today, utilities are installing an increasing number of cross-linked polyethylene (XLPE) transmission cables with system voltages ranging from 115 kV up to 345 kV. This report summarizes field partial discharge measurements and high-voltage ac commissioning tests performed on a Los Angeles Department of Water and Power (LADWP) 230-kV XLPE transmission cable system. The commissioning tests were performed with a field transportable, variable frequency, series resonant test set at 1.4 times rated voltage.

2002-09-11T23:59:59.000Z

93

Low-Voltage Cable Aging Management Guidance  

Science Conference Proceedings (OSTI)

This report, intended for use by power plant engineers and craft and administrative personnel who are responsible for cable system aging management, provides guidance on the effective and efficient application of current information and techniques related to aging and condition monitoring (CM) of low-voltage cables. The identification of cables that are prone to early aging and the timely replacement or repair of cables that are degraded will minimize unnecessary power losses, unplanned shutdowns, ...

2013-12-23T23:59:59.000Z

94

"Flexible aerogel as a superior thermal insulation for high temperature superconductor cable applications"  

Science Conference Proceedings (OSTI)

High temperature superconducting (HTS) cables are an advanced technology that can both strengthen and improve the national electrical distribution infrastructure. HTS cables require sufficient cooling to overcome inherent low temperature heat loading. Heat loads are minimized by the use of cryogenic envelopes or cryostats. Cryostats require improvement in efficiency, reliability, and cost reduction to meet the demanding needs of HTS conductors (1G and 2G wires). Aspen Aerogels has developed a compression resistant aerogel thermal insulation package to replace compression sensitive multi-layer insulation (MLI), the incumbent thermal insulation, in flexible cryostats for HTS cables. Oak Ridge National Laboratory tested a prototype aerogel package in a lab-scale pipe apparatus to measure the rate of heat invasion. The lab-scale pipe test results of the aerogel solution will be presented and directly compared to MLI. A compatibility assessment of the aerogel material with HTS system components will also be presented. The aerogel thermal insulation solution presented will meet the demanding needs of HTS cables.

White, Shannon O. [Aspen Aerogel, Inc.; Demko, Jonathan A [ORNL; Tomich, A. [Aspen Aerogel, Inc.

2010-01-01T23:59:59.000Z

95

Design and Development of a 100 MVA HTS Generator for Commercial Entry  

SciTech Connect

In 2002, General Electric and the US Department of Energy (DOE) entered into a cooperative agreement for the development of a commercialized 100 MVA generator using high temperature superconductors (HTS) in the field winding. The intent of the program was to: (1) identify and develop technologies that would be needed for such a generator; (2) develop conceptual designs for generators with ratings of 100 MVA and higher using HTS technology; (3) perform proof of concept tests at the 1.5 MW level for GE's proprietary warm iron rotor HTS generator concept; and (4) design, build, and test a prototype of a commercially viable 100 MVA generator that could be placed on the power grid. This report summarizes work performed during the program and is provided as one of the final program deliverables. The design for the HTS generator was based on GE's warm iron rotor concept in which a cold HTS coil is wound around a warm magnetic iron pole. This approach for rotating HTS electrical machinery provides the efficiency benefits of the HTS technology while addressing the two most important considerations for power generators in utility applications: cost and reliability. The warm iron rotor concept uses the least amount of expensive HTS wire compared to competing concepts and builds on the very high reliability of conventional iron core stators and armature windings.

None

2007-06-07T23:59:59.000Z

96

Design and Development of a 100 MVA HTS Generator for Commercial Entry  

SciTech Connect

In 2002, General Electric and the US Department of Energy (DOE) entered into a cooperative agreement for the development of a commercialized 100 MVA generator using high temperature superconductors (HTS) in the field winding. The intent of the program was to: (1) identify and develop technologies that would be needed for such a generator; (2) develop conceptual designs for generators with ratings of 100 MVA and higher using HTS technology; (3) perform proof of concept tests at the 1.5 MW level for GE's proprietary warm iron rotor HTS generator concept; and (4) design, build, and test a prototype of a commercially viable 100 MVA generator that could be placed on the power grid. This report summarizes work performed during the program and is provided as one of the final program deliverables. The design for the HTS generator was based on GE's warm iron rotor concept in which a cold HTS coil is wound around a warm magnetic iron pole. This approach for rotating HTS electrical machinery provides the efficiency benefits of the HTS technology while addressing the two most important considerations for power generators in utility applications: cost and reliability. The warm iron rotor concept uses the least amount of expensive HTS wire compared to competing concepts and builds on the very high reliability of conventional iron core stators and armature windings.

2007-06-07T23:59:59.000Z

97

Superconductor cable  

Science Conference Proceedings (OSTI)

A superconductor cable includes a superconductive cable core (1) and a cryostat (2) enclosing the same. The cable core (1) has a superconductive conductor (3), an insulation (4) surrounding the same and a shielding (5) surrounding the insulation (4). A layer (3b) of a dielectric or semiconducting material is applied to a central element (3a) formed from a normally conducting material as a strand or tube and a layer (3c) of at least one wire or strip of superconductive material is placed helically on top. The central element (3a) and the layer (3c) are connected to each other in an electrically conducting manner at the ends of the cable core (1).

Allais, Arnaud (Hannover, DE); Schmidt, Frank (Langenhagen, DE

2009-12-15T23:59:59.000Z

98

Condition and Power Transfer Assessment of CenterPoint Energy's Polk-Garrott Pipe-Type Cable Circuit  

Science Conference Proceedings (OSTI)

This report summarizes distributed fiber optic temperature sensing (DFOTS) on pipe-type cable circuits and the results of modifying and implementing EPRI's Dynamic Thermal Circuit Rating (DTCR) system on CenterPoint's Polk-Garrott pipe-type cable circuit in Houston, Texas.

2002-12-12T23:59:59.000Z

99

Field Demonstration of a 24-kV Superconducting Cable at Detroit Edison  

SciTech Connect

Customer acceptance of high temperature superconducting (HTS) cable technology requires a substantial field demonstration illustrating both the system's technical capabilities and its suitability for installation and operation within the utility environment. In this project, the world's first underground installation of an HTS cable using existing ductwork, a 120 meter demonstration cable circuit was designed and installed between the 24 kV bus distribution bus and a 120 kV-24 kV transformer at Detroit Edison's Frisbie substation. The system incorporated cables, accessories, a refrigeration system, and control instrumentation. Although the system was never put in operation because of problems with leaks in the cryostat, the project significantly advanced the state-of-the-art in the design and implementation of Warm Dielectric cable systems in substation applications. Lessons learned in this project are already being incorporated in several ongoing demonstration projects.

Kelley, Nathan; Corsaro, Pietro

2004-12-01T23:59:59.000Z

100

Fiber-Optic Sensor Technology for Diagnostics of Underground Power Cables  

Science Conference Proceedings (OSTI)

BackgroundSince the development of the first low-loss optical fiber in early 1970s, fiber-optic communication has undergone explosive growth. Today, many fiber sensors are commercially available and some of them have been widely in the electric utility industry. The Electric Power Research ...

2013-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Compact High-Temperature Superconducting Cables ...  

Science Conference Proceedings (OSTI)

... Beside power transmission, the flexible cabling concept could be used ... and for medical applications such as next-generation magnetic resonance ...

2011-02-25T23:59:59.000Z

102

Digital Cable Goes Quantum: NIST Debuts Superconducting ...  

Science Conference Proceedings (OSTI)

... The setup resembles a miniature version of a cable-television transmission line, but with some powerful added features, including superconducting ...

2012-06-08T23:59:59.000Z

103

Microsoft PowerPoint - Dr. Gyuk  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leading the Modernization of the Electricity Grid through Leading the Modernization of the Electricity Grid through Transformational Research and Partnerships Clean Energy Transmission and Reliability (CETR) FY 2010 Key Activities Advanced models and visualization tools using wide area, time-synchronized system data Enhanced analysis capabilities from transmission-level sensor (phasor) networks Algorithm development and computational research for real- time power system analysis Property improvements for High Temperature Supercondutivity "2G" wires and cables HTS direct current cable configuration studies Substantial expansion of renewable power presents the Nation's electric sector with two major challenges: judicious expansion of the Nation's transmission infrastructure; and integration of variable renewable generation into the routine operation of the power system.

104

Superconductor cable  

DOE Patents (OSTI)

A superconducting cable comprising an in-situ-formed type II superconductor, e.g. Nb.sub.3 Sn, in association with a stabilizing conductor both in heat transfer relationship with at least one passage adapted to carry liquified gaseous refrigerant. The conductor and said at least one passage are enclosed by a sheath comprising an alloy consisting essentially of about 49% nickel, about 4% chromium, about 3% niobium, about 1.4% titanium, about 1% aluminum, balance essentially iron.

Smith, Jr., Darrell F. (Huntington, WV); Lake, Bill L. (Ona, WV); Ballinger, Ronald G. (Andover, MA)

1988-01-01T23:59:59.000Z

105

HTS Magnet Program | Superconducting Magnet Division  

NLE Websites -- All DOE Office Websites (Extended Search)

HTS Magnet Program HTS Magnet Program High Temperature Superconductors (HTS) have the potential to revolutionize the field of superconducting magnets for particle accelerators, energy storage and medical applications. This is because of the fact that as compared to the conventional Low Temperature Superconductors (LTS), the critical current density (Jc ) of HTS falls slowly both: as a function of increasing field, and as a function of increasing temperature These unique properties can be utilized to design and build: HTS magnets that produce very high fields (20 - 50 T) HTS magnets that operate at elevated temperatures (20 - 77 K) This is a significant step forward over the convention LTS magnets which generally operate at a temperature of ~4 K and with field usually limited

106

High conductance surge cable  

DOE Patents (OSTI)

An electrical cable for connecting transient voltage surge suppressors to electrical power panels. A strip of electrically conductive foil defines a longitudinal axis, with a length of an electrical conductor electrically attached to the metallic foil along the longitudinal axis. The strip of electrically conductive foil and the length of an electrical conductor are covered by an insulating material. For impedance matching purposes, triangular sections can be removed from the ends of the electrically conductive foil at the time of installation. 6 figs.

Murray, M.M.; Wilfong, D.H.; Lomax, R.E.

1998-12-08T23:59:59.000Z

107

Recent advances in fabrication of high-T{sub c} superconductors for electric power applications.  

Science Conference Proceedings (OSTI)

The U.S. Department of Energy (DOE) supports an applied superconductivity program entitled ''Superconductivity Program for Electric Power Systems.'' Activities within this program contribute to development of the high-temperature superconductor (HTS) technology needed for industry to proceed with the commercial development of electric power applications such as motors, generators, transformers, transmission cables, and current limiters. Research is conducted in three categories: wire development, systems technology development, and Superconductivity Partnership Initiative (SPI). Wire development activities are devoted to improving the critical current density (J{sub c}) of short-length HTS wires, whereas systems technology development focuses on fabrication of long-length wires, coils, and on magnets. The SPI activities are aimed at development of prototype products. Significant progress has been made in the development of (HTSs) for various applications: some applications have already made significant strides in the marketplace, while others are still in the developmental stages. For successful electric power applications, it is very important that the HTS be fabricated into long-length conductors that exhibit desired superconducting and mechanical properties. Several parameters of the PIT technique must be carefully controlled to obtain the desired properties. Long lengths of Bi-2223 tapes with respectable superconducting properties have been fabricated by a carefully designed thermomechanical treatment process. A 1-MVA capacity fault current limiter, a 286-hp motor, and 630-kVA transformers, and a 50-m-long conductor, all using HTSs, have already been demonstrated. While the use of HTS devices in the electric utility area has clear advantages, impediments to successful commercialization remain. Issues such as AC losses, conductor cost, and reliable superconducting joints must be addressed. The cost of HTS conductors are still quite high, and significant R and D effort must be focused on this issue. The general acceptance of HTS power equipment will ultimately be based on system performance, reliability and maintenance, efficiency, and installed cost relative to those of conventional technologies.

Balachandran, U.

1998-03-25T23:59:59.000Z

108

Influence of Proton Irradiation on Angular Dependence of Second Generation (2G)HTS  

Science Conference Proceedings (OSTI)

In the Facility for Rare Isotope Beams (FRIB) the quadrupoles in the fragment separator are exposed to very high radiation and heat loads. High Temperature Superconductors (HTS) are a good candidate for these magnets because they can be used at {approx}30-50 K and tolerate higher heat generation than Nb-Ti magnets. Radiation damage studies of HTS wires are crucial to ensure that they will survive in a high radiation environment. HTS wires from two vendors were studied. Samples of 2G HTS wires from SuperPower and American Superconductor (ASC) were irradiated with a 42 {mu}A, 142 MeV proton beam from the Brookhaven Linac Isotope Producer (BLIP). The angular dependence of the critical current was measured in magnetic fields at 77K.

Shiroyanagi, Y.; Greene, G.; Gupta, R.; Sampson, W.

2011-05-01T23:59:59.000Z

109

CABLE AMPACITY DERATING  

SciTech Connect

The purpose and objective of this calculation is to determine the maximum ampacity of the cables in the underground duct bank for ensuring compliance with cable limits.

Y. Shane

1995-07-24T23:59:59.000Z

110

Medium Voltage Cable Aging Management Guide, Revision 1  

Science Conference Proceedings (OSTI)

Medium-voltage cables (5- to 35-kV rated cables) have provided reasonable service in nuclear power plants. However, there is a concern that cables that have experienced long periods of wet service might degrade and fail in service. Because most plants have had few problems with medium-voltage cable, little on-staff experience with medium-voltage cables exists at most sites. This report has been prepared to provide information that will be of practical use when questions concerning medium-voltage cable lo...

2010-11-29T23:59:59.000Z

111

Nanodielectrics for Underground Distribution Cables and Cable Systems  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) early recognized the potential for nanotechnology in power distribution and started a program in 2003 to explore the possibilities of using the technology to enhance the properties of high-voltage cable dielectrics based on polyethylene and ethylene-propylene rubber. In a broad sense, the research is developing methods to incorporate nanoparticles into insulating compounds. The specific efforts to date have focused on improved dielectric breakdown strength. Co...

2010-12-21T23:59:59.000Z

112

Condition Monitoring of Cables Task 3 Report: Condition Monitoring Techniques for Electric Cables  

SciTech Connect

For more than 20 years the NRC has sponsored research studying electric cable aging degradation, condition monitoring, and environmental qualification testing practices for electric cables used in nuclear power plants. This report summarizes several of the most effective and commonly used condition monitoring techniques available to detect damage and measure the extent of degradation in electric cable insulation. The technical basis for each technique is summarized, along with its application, trendability of test data, ease of performing the technique, advantages and limitations, and the usefulness of the test results to characterize and assess the condition of electric cables.

Villaran, M.; Lofaro, R.; na

2009-11-30T23:59:59.000Z

113

Electrical Cable Testing by Pulse-Arrested Spark Discharge ...  

... useful to determine the location of defect sites in critical but inaccessible electrical cabling systems in aging aircraft, ships, nuclear power ...

114

Molds for cable dielectrics  

DOE Patents (OSTI)

Molds for use in making end moldings for high-voltage cables are described wherein the dielectric insulator of a cable is heated and molded to conform to a desired shape. As a consequence, high quality substantially bubble-free cable connectors suitable for mating to premanufactured fittings are made.

Roose, Lars D. (Albuquerque, NM)

1996-01-01T23:59:59.000Z

115

Electronically controlled cable wrapper  

DOE Patents (OSTI)

A spindle assembly engages and moves along a length of cable to be wrapped with insulating tape. Reels of insulating tape are mounted on a outer rotatable spindle which revolves around the cable to dispense insulating tape. The rate of movement of the spindle assembly along the length of the cable is controlled by a stepper motor which is programmably synchronized to the rate at which rotatable spindle wraps the cable. The stepper motor drives a roller which engages the cable and moves the spindle assembly along the length of the cable as it is being wrapped. The spindle assembly is mounted at the end of an articulated arm which allows free movement of the spindle assembly and allows the spindle assembly to follow lateral movement of the cable.

Young, T.M.

1982-08-17T23:59:59.000Z

116

R&D ERL: HTS Solenoid  

SciTech Connect

An innovative feature of the ERL project is the use of a solenoid made with High Temperature Superconductor (HTS) with the Superconducting RF cavity. The HTS solenoid design offers many advantages because of several unique design features. Typically the solenoid is placed outside the cryostat which means that the beam gets significantly defused before a focusing element starts. In the current design, the solenoid is placed inside the cryostat which provides an early focusing structure and thus a significant reduction in the emittance of the electron beam. In addition, taking full advantage of the high critical temperature of HTS, the solenoid has been designed to reach the required field at {approx}77 K, which can be obtained with liquid nitrogen. This significantly reduces the cost of testing and allows a variety of critical pre-tests which would have been prohibitively expensive at 4 K in liquid helium because of the additional requirements of cryostat and associated facilities.

Gupta, R.; Muratore, J.; Plate, S.

2010-01-01T23:59:59.000Z

117

Best Practices for HPFF Pipe Type Cable Assessment, Maintenance and Testing: Blenheim-Gilboa 345-kV Cable Systems  

Science Conference Proceedings (OSTI)

EPRI and the New York Power Authority (NYPA) have sponsored an extensive series of tests on the NYPA Blenheim-Gilboa 345-kV high-pressure fluid-filled (HPFF) transmission cable systems to determine their condition. Several tests were also designed to determine cable power transfer capability based on distributed temperature measurements and to improve the best maintenance practices for the Blenheim-Gilboa HPFF cable systems.

2005-03-01T23:59:59.000Z

118

Cable Aging Management Training Course for Low-Voltage Cables  

Science Conference Proceedings (OSTI)

The "EPRI PSE Cable Aging Training Course for Low-Voltage Cables" provides a basis for understanding of the aging of the insulation and jackets of electrical cables used in low-voltage systems. Practical techniques for determining which cables are prone to premature aging and for evaluating their condition are described. The course contains 11 modules. The first 9 modules describe the body of the cable aging management process. The last two modules, "Cable Failure Assessment" and "Performing a Walkdown o...

2003-11-24T23:59:59.000Z

119

Cable Diagnostic Focused Initiative  

SciTech Connect

This report summarizes an extensive effort made to understand how to effectively use the various diagnostic technologies to establish the condition of medium voltage underground cable circuits. These circuits make up an extensive portion of the electric delivery infrastructure in the United States. Much of this infrastructure is old and experiencing unacceptable failure rates. By deploying efficient diagnostic testing programs, electric utilities can replace or repair circuits that are about to fail, providing an optimal approach to improving electric system reliability. This is an intrinsically complex topic. Underground cable systems are not homogeneous. Cable circuits often contain multiple branches with different cable designs and a range of insulation materials. In addition, each insulation material ages differently as a function of time, temperature and operating environment. To complicate matters further, there are a wide variety of diagnostic technologies available for assessing the condition of cable circuits with a diversity of claims about the effectiveness of each approach. As a result, the benefits of deploying cable diagnostic testing programs have been difficult to establish, leading many utilities to avoid the their use altogether. This project was designed to help address these issues. The information provided is the result of a collaborative effort between Georgia Tech NEETRAC staff, Georgia Tech academic faculty, electric utility industry participants, as well as cable system diagnostic testing service providers and test equipment providers. Report topics include: How cable systems age and fail, The various technologies available for detecting potential failure sites, The advantages and disadvantages of different diagnostic technologies, Different approaches for utilities to employ cable system diagnostics. The primary deliverables of this project are this report, a Cable Diagnostic Handbook (a subset of this report) and an online knowledge based system (KBS) that helps utilities select the most effective diagnostic technologies for a given cable circuit and circuit conditions.

Hartlein, R.A.; Hampton, R.N.

2010-12-30T23:59:59.000Z

120

Multistrand superconductor cable  

DOE Patents (OSTI)

Improved multistrand Rutherford-type superconductor cable is produced by using strands which are preformed, prior to being wound into the cable, so that each strand has a variable cross section, with successive portions having a substantially round cross section, a transitional oval cross section, a rectangular cross section, a transitional oval cross section, a round cross section and so forth, in repetitive cycles along the length of the strand. The cable is wound and flattened so that the portions of rectangular cross section extend across the two flat sides of the cable at the strand angle. The portions of round cross section are bent at the edges of the flattened cable, so as to extend between the two flat sides. The rectangular portions of the strands slide easil

Borden, A.R.

1984-03-08T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

RADIATION RESISTANT HTS QUADRUPOLES FOR RIA.  

Science Conference Proceedings (OSTI)

Extremely high radiation, levels with accumulated doses comparable to those in nuclear reactors than in accelerators, and very high heat loads ({approx}15 kw) make the quadrupole magnets in the fragment separator one of the most challenging elements of the proposed Rare Isotope Accelerator (RIA). Removing large heat loads, protecting the superconducting coils against quenching, the long term survivability of magnet components, and in particular, insulation that can retain its functionality in such a harsh environment, are the major challenges associated with such magnets. A magnet design based on commercially available high temperature superconductor (HTS) and stainless steel tape insulation has been developed. HTS will efficiently remove these large heat loads and stainless steel can tolerate these large radiation doses. Construction of a model magnet has been started with several coils already built and tested. This paper presents the basic magnet design, results of the coil tests, the status and the future plans. In addition, preliminary results of radiation calculations are also presented.

GUPTA,R.; ANERELLA,M.; HARRISON,M.; ET AL.

2004-10-03T23:59:59.000Z

122

End moldings for cable dielectrics  

DOE Patents (OSTI)

End moldings for high-voltage cables are described wherein the dielectric insulator of the cable is heated and molded to conform to a desired shape. As a consequence, high quality substantially bubble- free cable connectors suitable for mating to premanufactured fittings are made. Disclosed are a method for making the cable connectors either in the field or in a factory, molds suitable for use with the method, and the molded cable connectors, themselves.

Roose, L.D.

1993-12-31T23:59:59.000Z

123

End moldings for cable dielectrics  

DOE Patents (OSTI)

End moldings for high-voltage cables are described wherein the dielectric insulator of the cable is heated and molded to conform to a desired shape. As a consequence, high quality substantially bubble-free cable connectors suitable for mating to premanufactured fittings are made. Disclosed is a method for making the cable connectors either in the field or in a factory, molds suitable for use with the method, and the molded cable connectors, themselves.

Roose, Lars D. (Albuquerque, NM)

2000-01-01T23:59:59.000Z

124

The Cabling Handbook  

Science Conference Proceedings (OSTI)

From the Book:PREFACE: IntroductionThe cabling industry is becoming a full-service provider as it evolves its infrastructure into an all-digital superhighway. Both the telephone and computer industries are suggesting that their networking ...

John R. Vacca

1998-09-01T23:59:59.000Z

125

Cable Reliability Management Strategies  

Science Conference Proceedings (OSTI)

In previous collaborative research with several utilities, EPRI developed methods for forecasting the failures and cash flows associated with managing a population of underground cable. This study builds on that research and provides a method for developing least-cost repair and replacement policies for such a population. The policies specify when to replace a cable section or an entire circuit, depending on the age of the section and the number of failures the section has experienced.

2003-12-10T23:59:59.000Z

126

Correction coil cable  

DOE Patents (OSTI)

The present invention relates generally to the field of the manufacture of electrical coil windings, and more particularly to a unique cable assembly for use in winding coils having small wires and a large number of winding turns. The predominant current usage of the correction coil cable of the present invention is as the winding wire for correction coils in the superconducting super collider and in similar devices which might be developed in the future.

Wang, Sou-Tien

1991-04-09T23:59:59.000Z

127

Fiber Optic Cables in High Voltage Environments  

Science Conference Proceedings (OSTI)

In recent years, it has become common for electric utilities to place fiber optic cables within their transmission rights-of-way. Overhead transmission power line corridors can provide the telecommunications industry with cost-effective alternative routes, and at the same time benefit the electric utilities by generating additional revenues using existing facilities. Also, within the power utility industry, reliable internal communications are vital to ensure ptotection and control of the power system. S...

2000-12-07T23:59:59.000Z

128

On-Line Dissolved Gas Analysis in High-Pressure Fluid-Filled Cables  

Science Conference Proceedings (OSTI)

Highly reliable underground transmission lines are essential to deliver power consistently. Reliability may be affected as underground laminar dielectric cable circuits age and their condition degenerates. High-pressure fluid-filled (HPFF) pipe-type cable systems have been the preferred high-voltage transmission cable type in North America from the earliest transmission cable installations in the 1930s through the late 1990s and still account for the largest percentage (80%) of installed length. Although...

2009-11-17T23:59:59.000Z

129

Correction coil cable  

DOE Patents (OSTI)

A wire cable assembly (10, 310) adapted for the winding of electrical coils is taught. A primary intended use is for use in particle tube assemblies (532) for the superconducting super collider. The correction coil cables (10, 310) have wires (14, 314) collected in wire arrays (12, 312) with a center rib (16, 316) sandwiched therebetween to form a core assembly (18, 318 ). The core assembly (18, 318) is surrounded by an assembly housing (20, 320) having an inner spiral wrap (22, 322) and a counter wound outer spiral wrap (24, 324). An alternate embodiment (410) of the invention is rolled into a keystoned shape to improve radial alignment of the correction coil cable (410) on a particle tube (733) in a particle tube assembly (732).

Wang, Sou-Tien (Danville, CA)

1994-11-01T23:59:59.000Z

130

Conductor requirements for high-temperature superconducting utility power transformers  

Science Conference Proceedings (OSTI)

High-temperature superconducting (HTS) coated conductors in utility power transformers must satisfy a set of operating requirements that are driven by two major considerations-HTS transformers must be economically competitive with conventional units, and the conductor must be robust enough to be used in a commercial manufacturing environment. The transformer design and manufacturing process will be described in order to highlight the various requirements that it imposes on the HTS conductor. Spreadsheet estimates of HTS transformer costs allow estimates of the conductor cost required for an HTS transformer to be competitive with a similarly performing conventional unit.

Pleva, E. F. [Waukesha Electric Systems, Waukesha, WI; Mehrotra, V. [Waukesha Electric Systems, Waukesha, WI; Schwenterly, S W [ORNL

2010-01-01T23:59:59.000Z

131

Coaxial cable cutter  

DOE Patents (OSTI)

A cutting device is provided which is useful in trimming the jackets from semi-rigid coaxial cables and wire having a cutting bit and support attached to movable jaws. A thumbpiece is provided to actuate the opening of the jaws for receiving the cable to be trimmed, and a spring member is provided to actuate the closing of the jaws when thumbpiece is released. The cutting device utilizes one moving part during the cutting operation by using a rolling cut action. The nature of the jaws allows the cutting device to work in space having clearances less than 0.160 inches.

Hall, Leslie C. (Grandview, MO); Hedges, Robert S. (Belton, MO)

1990-04-10T23:59:59.000Z

132

Underground Distribution Cable Fleet Management  

Science Conference Proceedings (OSTI)

This report describes industry research and data collection related to distribution cable system management. Focus areas include international practices for cable system management, international research activities, and application of diagnostic testing techniques. This report is a follow-up to the 2010 effort to catalog leading practices for distribution cable fleet management.

2011-12-15T23:59:59.000Z

133

Network Cabling Handbook  

Science Conference Proceedings (OSTI)

From the Publisher:This is a one-stop guide to both copper and fiber network cabling. Contains detailed coverage of monitoring software,connectivity troubleshooting,and management techniques. Master the art of wiring your network Plan,design,and build ...

Chris Clark

2001-11-01T23:59:59.000Z

134

Disposable telemetry cable deployment system  

DOE Patents (OSTI)

A disposable telemetry cable deployment system for facilitating information retrieval while drilling a well includes a cable spool adapted for insertion into a drill string and an unarmored fiber optic cable spooled onto the spool cable and having a downhole end and a stinger end. Connected to the cable spool is a rigid stinger which extends through a kelly of the drilling apparatus. A data transmission device for transmitting data to a data acquisition system is disposed either within or on the upper end of the rigid stinger.

Holcomb, David Joseph (Sandia Park, NM)

2000-01-01T23:59:59.000Z

135

High Transport Current 2G HTS Cables with Low AC Losses  

Science Conference Proceedings (OSTI)

... Materials Forensics, Three-dimensional Modeling and Fractal Characterization Vortex Physics in Oxide and Pnictide High Temperature Superconductors.

136

Cost Reduction Activities in France for Installing Cable: Mechanical Laying Techniques  

Science Conference Proceedings (OSTI)

In the past few decades, there has been increasing public objection to the undesirable visual impact of overhead power lines. Utilities face difficulties in obtaining authorization to build new overhead lines. This situation has led to the power industry's current interest in underground cable techniques. Buried insulated cable faces two difficulties, technical and economic, both depending on the level of voltage. At medium voltage (essentially 20 kilovolts), the optimization of cable systems, combined w...

2001-01-03T23:59:59.000Z

137

Experimental Verification of Thermo-Mechanical Models for Cross-Linked Polyethylene Cable in Pipes and Ducts: Interim Report on First Cable Test  

Science Conference Proceedings (OSTI)

In 2002, the Electric Power Research Institute (EPRI) began investigations of the thermo-mechanical (T-M) behavior of transmission-class cable systems with extruded insulation in duct-manhole and pipe systems and began work on a design guide. The project consisted primarily of two efforts: experimental measurement of cable parameters and development of a mathematical simulation of the thermal and mechanical behavior of transmission-class cable with extruded cross-linked polyethylene (XLPE) ...

2013-12-23T23:59:59.000Z

138

Cable shield connecting device  

DOE Patents (OSTI)

A cable shield connecting device for installation on a high voltage cable of the type having a metallic shield, the device including a relatively conformable, looped metal bar for placement around a bared portion of the metallic shield to extend circumferentially around a major portion of the circumference of the metallic shield while being spaced radially therefrom, a plurality of relatively flexible metallic fingers affixed to the bar, projecting from the bar in an axial direction and spaced circumferentially along the bar, each finger being attached to the metallic shield at a portion located remote from the bar to make electrical contact with the metallic shield, and a connecting conductor integral with the bar.

Silva, Frank A. (Basking Ridge, NJ)

1979-01-01T23:59:59.000Z

139

Method to improve superconductor cable  

DOE Patents (OSTI)

A method is disclosed of making a stranded superconductor cable having improved flexing and bending characteristics. In such method, a plurality of superconductor strands are helically wound around a cylindrical portion of a mandrel which tapers along a transitional portion to a flat end portion. The helically wound strands form a multistrand hollow cable which is partially flattened by pressure rollers as the cable travels along the transitional portion. The partially flattened cable is impacted with repeated hammer blows as the hollow cable travels along the flat end portion. The hammer blows flatten both the internal and the external surfaces of the strands. The cable is fully flattened and compacted by two sets of pressure rollers which engage the flat sides and the edges of the cable after it has traveled away from the flat end portion of the mandrel. The flattened internal surfaces slide easily over one another when the cable is flexed or bent so that there is very little possibility that the cable will be damaged by the necessary flexing and bending required to wind the cable into magnet coils.

Borden, A.R.

1984-03-08T23:59:59.000Z

140

HVDC Cables Interest Group: Summary of 2012 Activities  

Science Conference Proceedings (OSTI)

A diverse international group of participants has been assembled, with special knowledge and interests in high-voltage direct-current (HVDC) cable technology applications. A forum has been developed for the free exchange of technical information between leading power utility engineers and researchers who are actively engaged in the practical world of HVDC system applications as well as those planning future R&D activities. This report describes results of the first year of the HVDC Cables ...

2013-06-28T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Underground Transmission Cable System Construction and Installation Practices Manual  

Science Conference Proceedings (OSTI)

A reliable underground transmission line depends on reliable cable system manufacturing, design, construction, installation, and operation and maintenance. Construction and installation remain the most expensive component to implement. Recent advances in underground transmission have led to more demand for best practices and innovative ways to reduce construction and installation costs in a cable project. The Electric Power Research Institute (EPRI) has funded many projects over the years to improve the ...

2010-12-03T23:59:59.000Z

142

High Stress Cable Using Nanocomposites: Status Report and Future Prospects  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) has been pursuing the development of a nanocomposite cable insulation compound for several years. Early successes in the laboratory led to commercialization efforts with Dow Chemical Company and several trial runs of commercial-scale compound manufacturing. Medium-voltage underground cables were made with the experimental compound. The fundamental challenge in dispersing nanoscale particles into a bulk polymer is achieving a homogenous dispersion throughout th...

2011-12-18T23:59:59.000Z

143

Distribution Class Nanodielectric Cable: Status Report and Future Prospects  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) has been pursuing the development of a nanocomposite cable insulation compound for several years. Early successes in the laboratory led to commercialization efforts with Dow Chemical Company and several trial runs of commercial-scale compound manufacturing. Medium-voltage underground cables were made with the experimental compound. The fundamental challenge in dispersing nanoscale particles into a bulk polymer is achieving a homogenous dispersion throughout t...

2011-12-18T23:59:59.000Z

144

Utilizing cable winding and industrial robots to facilitate the manufacturing of electric machines  

Science Conference Proceedings (OSTI)

Cable wound electric machines are used mainly for high voltage and direct-drive applications. They can be found in areas such as wind power, hydropower, wave power and high-voltage motors. Compared to conventional winding techniques, cable winding includes ... Keywords: Automated production, Electric machine assembly, Industrial robot, Powerformer, Stator winding, Wave energy converter

Erik Hultman; Mats Leijon

2013-02-01T23:59:59.000Z

145

Advanced Cables and Conductors | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(HTS) wires that have 100 times the capacity of conventional wires without energy loss due to electrical resistance. One of the challenges with this technology has been to...

146

DOE-sponsored cable aging research at Sandia National Laboratories  

SciTech Connect

Cables have been identified as critical components requiring detailed technical evaluation for extending the lifetime of Light Water Reactors beyond 40 years. This paper highlights some of the DOE-sponsored cable aging studies currently underway at Sandia. These studies are focused on two important issues: the validity of the often-used Arrhenius thermal aging prediction method and methods for predicting lifetimes in combined thermal-radiation environments. Accelerated thermal aging results are presented for three cable jacket and insulation materials, which indicate that hardening of the outside surface has an Arrhenius temperature dependence and correlates well with reductions in ultimate tensile elongation. This suggests that the indentor approach is a promising NDE technique for cable jacket and unjacketed insulation materials installed in thermally-dominated regions of nuclear power plants.

Gillen, K.T.; Clough, R.L.; Celina, M.; Wise, J.; Malone, G.M.

1995-12-01T23:59:59.000Z

147

Plant Engineering: Advanced Nuclear Plant Cable System Design and Installation Concepts to Assure Longevity  

Science Conference Proceedings (OSTI)

Although the electrical cable systems for existing nuclear power plants have functioned well for up to 40 years, the desired service life for new plants is 60 or more years. Experience with existing plants indicates that relatively small changes during the design and construction of nuclear plants will lead to longer cable system lives and greater ease of testing and assessment of cables to verify their remaining service life. This report describes those changes and provides recommendations for their imp...

2012-04-16T23:59:59.000Z

148

High-Temperature Superconductivity Cable Demonstration Projects...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High-Temperature Superconductivity Cable Demonstration Projects High-Temperature Superconductivity Cable Demonstration Projects A National Effort to Introduce New Technology into...

149

Application of Extruded Dielectric Cable Model in the Dynamic Thermal Circuit Rating (DTCR) System for San Diego Gas & Electric's Ot ay Mesa Power Loop Project  

Science Conference Proceedings (OSTI)

Due to limited incentives for new construction, utilities around the world are undergoing a major transformation that is redefining the use of existing power equipment in the electric transmission network. Under these circumstances, utilities are forced to find new ways to increase power flow through the existing transmission corridors with minimal investments. This report addresses the application of the Electric Power Research Institute's (EPRI's) Dynamic Thermal Circuit Rating (DTCR) program to San Di...

2010-02-02T23:59:59.000Z

150

Study of HTS Wires at High Magnetic Fields  

SciTech Connect

Fermilab is working on the development of high field magnet systems for ionization cooling of muon beams. The use of high temperature superconducting (HTS) materials is being considered for these magnets using Helium refrigeration. Critical current (I{sub c}) measurements of HTS conductors were performed at FNAL and at NIMS up to 28 T under magnetic fields at zero to 90 degree with respect to the sample face. A description of the test setups and results on a BSCCO-2223 tape and second generation (2G) coated conductors are presented.

Turrioni, D.; Barzi, E.; Lamm, M.J.; Yamada, R.; Zlobin, A.V.; Kikuchi, A.; /Fermilab

2009-01-01T23:59:59.000Z

151

Method and apparatus for electrical cable testing by pulse-arrested spark discharge  

DOE Patents (OSTI)

A method for electrical cable testing by Pulse-Arrested Spark Discharge (PASD) uses the cable response to a short-duration high-voltage incident pulse to determine the location of an electrical breakdown that occurs at a defect site in the cable. The apparatus for cable testing by PASD includes a pulser for generating the short-duration high-voltage incident pulse, at least one diagnostic sensor to detect the incident pulse and the breakdown-induced reflected and/or transmitted pulses propagating from the electrical breakdown at the defect site, and a transient recorder to record the cable response. The method and apparatus are particularly useful to determine the location of defect sites in critical but inaccessible electrical cabling systems in aging aircraft, ships, nuclear power plants, and industrial complexes.

Barnum, John R. (Albuquerque, NM); Warne, Larry K. (Albuquerque, NM); Jorgenson, Roy E. (Albuquerque, NM); Schneider, Larry X. (Albuquerque, NM)

2005-02-08T23:59:59.000Z

152

Fibre Optic Cables: Tapping into fibre optic cables  

Science Conference Proceedings (OSTI)

When researchers laid the first undersea communication cable in the 1850s, they could not have known how long distance communications would advance in the subsequent 150 years. Thick copper wire laid under the ocean began carrying telegraph signals around ...

Bernard Everett

2007-05-01T23:59:59.000Z

153

Shield Losses in Medium-Voltage Cables  

Science Conference Proceedings (OSTI)

Utilities can substantially reduce cable costs and circulating current losses by optimizing the design of concentric neutral conductors for underground distribution cables and by configuring installed cables to minimize energy loss. This guide shows how to design neutral conductors for maximum cost-effectiveness and includes calculations of circulating current losses and ampacities for commonly used cables.

1987-12-14T23:59:59.000Z

154

Fully synthetic taped insulation cables  

DOE Patents (OSTI)

The present invention is a cable which, although constructed from inexpensive polyolefin tapes and using typical impregnating oils, furnishes high voltage capability up to 765 kV, and has such excellent dielectric characteristics and heat transfer properties that it is capable of operation at capacities equal to or higher than presently available cables at a given voltage. This is accomplished by using polyethylene, polybutene or polypropylene insulating tape which has been specially processed to attain properties which are not generally found in these materials, but are required for their use in impregnated electrical cables. Chief among these properties is compatibility with impregnating oil.

Forsyth, E.B.; Muller, A.C.

1983-07-15T23:59:59.000Z

155

Holbrook Substation Superconductor Cable System, Long Island, New York Final Report  

SciTech Connect

The LIPA Superconductor project broke ground on July 4, 2006, was first energized on April 22, 2008 (Earth Day) and was commissioned on June 25, 2008. Since commissioning, up until early March, 2009, there were numerous refrigeration events that impacted steady state operations. This led to the review of the alarms that were being generated and a rewrite of the program logic in order to decrease the hypersensitivity surrounding these alarms. The high temperature superconductor (HTS) cable was energized on March 5, 2009 and ran uninterrupted until a human error during a refrigeration system switchover knocked the cable out of the grid in early February 2010. The HTS cable was in the grid uninterrupted from March 5, 2009 to February 4, 2010. Although there have been refrigeration events (propagated mainly by voltage sags/surges) during this period, the system was able to automatically switch over from the primary to the backup refrigeration system without issue as required during this period. On February 4, 2010, when switching from the backup over to the primary refrigeration system, two rather than one liquid nitrogen pumps were started inadvertently by a human error (communication) causing an overpressure in the cable cooling line. This in turn activated the pressure relief valve located in the grounding substation. The cable was automatically taken out of the grid without any damage to the components or system as a result of signals sent from the AMSC control cabinet to the LIPA substation. The cable was switched back into the grid again on March 16, 2010 without incident and has been operational since that time. Since switching from the backup to the primary is not an automatic process, a recent improvement was added to the refrigeration operating system to allow remote commands to return the system from backup to primary cooling. This improvement makes the switching procedure quicker since travel to the site to perform this operation is no longer necessary and safer since it is now a programmed procedure versus the former written procedure that was still subject to human variation in the process.

Maguire, James; McNamara, Joseph

2010-06-25T23:59:59.000Z

156

Process of modifying a cable end  

DOE Patents (OSTI)

End moldings for high-voltage cables are described wherein the dielectric insulator of the cable is heated and molded to conform to a desired shape. As a consequence, high quality substantially bubble-free cable connectors suitable for mating to premanufactured fittings are made. Disclosed are a method for making the cable connectors either in the field or in a factory, molds suitable for use with the method, and the molded cable connectors, themselves. 5 figs.

Roose, L.D.

1995-08-01T23:59:59.000Z

157

Process of modifying a cable end  

DOE Patents (OSTI)

End moldings for high-voltage cables are described wherein the dielectric insulator of the cable is heated and molded to conform to a desired shape. As a consequence, high quality substantially bubble-free cable connectors suitable for mating to premanufactured fittings are made. Disclosed are a method for making the cable connectors either in the field or in a factory, molds suitable for use with the method, and the molded cable connectors, themselves.

Roose, Lars D. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

158

Materials Technology @ TMS  

Science Conference Proceedings (OSTI)

Feb 17, 2011 ... They are roughly one-tenth the diameter of typical HTS cables used in the power grid. (Standard electrical transmission lines normally operate...

159

Fully synthetic taped insulation cables  

DOE Patents (OSTI)

A high voltage oil-impregnated electrical cable with fully polymer taped insulation operable to 765 kV. Biaxially oriented, specially processed, polyethylene, polybutene or polypropylene tape with an embossed pattern is wound in multiple layers over a conductive core with a permeable screen around the insulation. Conventional oil which closely matches the dielectric constant of the tape is used, and the cable can be impregnated after field installation because of its excellent impregnation characteristics.

Forsyth, Eric B. (Brookhaven, NY); Muller, Albert C. (Center Moriches, NY)

1984-01-01T23:59:59.000Z

160

Nuclear instrumentation cable end seal  

DOE Patents (OSTI)

An improved coaxial end seal for hermetically sealed nuclear instrumentation cable exhibiting an improved breakdown pulse noise characteristic under high voltage, high temperature conditions. A tubular insulator body has metallized interior and exterior surface portions which are braze sealed to a center conductor and an outer conductive sheath. The end surface of the insulator body which is directed toward the coaxial cable to which it is sealed has a recessed surface portion within which the braze seal material terminates.

Cannon, Collins P. (Richland, WA); Brown, Donald P. (Richland, WA)

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

High-Temperature Superconductivity Cable Demonstration Projects  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Temperature Temperature Superconductivity Cable Demonstration Projects Superconductivity Power Equipment www.oe.energy.gov Phone: 202-586-1411 Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585. Plugging America Into the Future of Power "A National Effort to Introduce New Technology into the Power Delivery Infrastructure" "In order to meet President Obama's ambitious energy goals, we must modernize the nation's electrical grid to improve the transmission, storage and reliability of clean energy across the country and help to move renewable energy from the places it can be produced to the places it can be used. The Department of Energy is working with industry partners to develop the

162

Normalized Span Method for Thermo-Mechanical Design of Duct-Manhole and Pipe-Manhole Cable Systems  

Science Conference Proceedings (OSTI)

The EPRI Normalized Span (NSPAN) method provides design tools for the mechanical design of transmission-class XLPE insulated power cables installed in pipe or duct manhole systems. It is based on the method and experimentally measured XLPE cable parameters recorded in EPRI report 1001849, Mechanical Effects on Extruded Dielectric Cables and Joints Installed in Underground Transmission Systems in North America (publically available at no charge). The NSPAN method is implemented in an EPRI software program...

2010-12-23T23:59:59.000Z

163

Development of Substrate for RABiTS-based HTS Conductors  

SciTech Connect

During its fifteen years of life, this CRADA has evolved in both scope and purpose. Early efforts to develop high performance bismuth-based powder-in-tube first generation high temperature superconductors (HTS) have shifted toward efforts to understand and develop technologies required to fabricate second generation HTS coated conductors. Since the two original longstanding principal investigators from UT-Battelle and Oxford Superconducting Technology (OST) are not presently employed by their respective organizations, this final report shall focus primarily on results of the more recent past involving research and development of the deformation and annealing processes required to fabricate metallic substrates for RABiTS-based second generation coated conductors. The specific objectives of this recent work involve the development of OST Ni/3%W tape for HTS coated conductors and include: (a) to improve uniformity of cube texture through control of deformation and annealing parameters, (b) to minimize delamination and other buffer deposition problems through understanding and control of key parameters related to the metal substrate, (c) to ensure that the textured metal substrate allows well textured buffers with no delamination, and (d) to prepared a final report.

None

2009-06-05T23:59:59.000Z

164

Compact High-Temperature Superconducting Cable Wins ' ...  

Science Conference Proceedings (OSTI)

Compact High-Temperature Superconducting Cable Wins 'R&D 100' Award. From NIST Tech Beat: June 22, 2011. ...

2011-07-06T23:59:59.000Z

165

Cable separation; What do industry testing programs show  

Science Conference Proceedings (OSTI)

This report presents the findings of the working group on independence criteria. The working group reviewed several test reports on cable separation testing programs undertaken by electric power utilities to demonstrate adequate independence of electrical circuits within nuclear power plants systems. The materials and methodology used to conduct the tests are discussed. Test results are presented in summary with recommendations for reductions and enhancements to the separation distances of IEEE Std. 384.

De Young, G.L. (Commonwealth Edison Co., Chicago, IL (USA)); Disosway, J.J. (Carolina Power and Light Co., Raleigh, NC (USA)); Doman, G.L. (Westinghouse, Hanford, CO (US)); Hazeltine, J. (Wyle Labs., Norco, CA (USA)); Jamison, R.C. (Yankee Atomic Electric (US)); Killen, T.S. (Bechtel National, Inc., Aiken, SC (USA)); Yanosy, P.L. (Combustion Engineering, Inc., Windsor, CT (USA)); Zar, M.S. (Sargent and Lundy, Chicago, IL (USA))

1990-09-01T23:59:59.000Z

166

Haines - Scagway Submarine Cable Intertie Project, Haines to Scagway, Alaska Final Technical and Construction Report  

Science Conference Proceedings (OSTI)

The Haines to Skagway submarine cable project is located n Taiya Inlet, at the north end of Lynn Canal, in Southeast Alaska. The cable is approximately 15 miles long, with three landings and splice vaults. The cable is 35 kV, 3-Phase, and armored. The cable interconnects the Goat Lake Hydro Project near Skagway with the community of Haines. Both communities are now on 100% hydroelectric power. The Haines to Skagway submarine cable is the result of AP&T's goal of an alternative, economic, and environmentally friendly energy source for the communities served and to eliminate the use of diesel fuel as the primary source of energy. Diesel units will continue to be used as a backup system.

Alan See; Bennie N. Rinehart; Glen Marin

1998-11-01T23:59:59.000Z

167

Mechanical properties of cables exposed to simultaneous thermal and radiation aging  

SciTech Connect

Sandia National Laboratories is conducting long-term aging research on representative samples of nuclear power plant Class 1E cables. The objectives of this program are to determine the suitability of these cables for extended life (beyond the 40-year design basis) and to assess various cable condition monitoring (CM) techniques for predicting remaining cable life. This paper provides the results of mechanical measurements that were performed on cable specimens cross-linked polyethylene neoprene jackets: chlorinated polyethylene jackets, fiberglass braid jackets, and chlorosulfonated polyethylene jackets aged at relatively mild, simultaneous thermal and radiation exposure conditions for periods of up to nine months. After aging, some of the aged samples, as well as some unaged samples, were exposed to accident gamma radiation at ambient temperature. The mechanical measurements discussed in this paper include tensile strength, ultimate elongation, and compressive modulus. 10 refs., 22 figs., 2 tabs.

Jacobus, M.J. (Sandia National Labs., Albuquerque, NM (USA)); Fuehrer, G.F. (Science and Engineering Associates, Inc., Albuquerque, NM (USA))

1990-01-01T23:59:59.000Z

168

Multiple connection for an undersea cable system  

Science Conference Proceedings (OSTI)

A multiple connection is claimed for connecting a plurality of armored cables to the housing of electrical apparatus in an undersea system having a cable interconnection point where a plurality of cables serving different destinations are brought together. Each of these cables comprise a core surrounded by armor and are terminated by a length of bared core extending beyond a severed end of the armor. The housing has a hollow cable-fixing part through which the bared cable cores pass, characterized in that said connection comprises: a steel binding ring through which the armored portion of each of said cables, is threaded, said ring serving to bind said armored portions of cable together; a steel tube threaded over said bared cores of said cables, having one end abutting against severed end portions of the armor of said cables and having its other end fixed mechanically to said hollow cable-fixing part of the electrical apparatus housing; and auxiliary armor wound around the portions of armored cable bound together by said ring and around the adjacent portion of said steel tube.

Guazzo, L.; Trezeguet, J.P.

1984-05-08T23:59:59.000Z

169

HVDC Cable Technology Assessment and DC versus AC Cables: State of the Science  

Science Conference Proceedings (OSTI)

Development and application of voltage-source converters and cross-linked polyethylene (XLPE)-insulated cables suitable for dc operation have accelerated the use of HVDC cables for land as well as underwater applications. There are many recent and planned installations that use these technologies or the long-established paper-insulated cable technology that has been used for long underwater cables for more than 50 years.This report describes these transmission cable types and their ...

2012-12-12T23:59:59.000Z

170

Thermal and electrical stabilities of solid nitrogen (SN2) cooled YBCO coated conductors for HTS magnet applications  

E-Print Network (OSTI)

Recently, a cooling system using a solid cryogen such as solid nitrogen (SN2), was introduced for high temperature superconducting (HTS) magnet applications. In order to apply the SN2 cooling system successfully to HTS ...

Song, J. B.

171

Power Plant Electrical Reference Series, Volumes 1-16: Volume 1: Electric Generators; Volume 2: Power Transformers; Volume 3: Auxili ary System Planning; Volume 4: Wire and Cable; Volume 5: Grounding and Lightning Protection; Volume 6: Motors; Volume 7..  

Science Conference Proceedings (OSTI)

This comprehensive and practical guide to electric power apparatus and electrical phenomena provides an up-to-date source book for power plant managers, engineers, and operating personnel. Aiding in the recognition and prevention of potential problems, the 16-volume guide can help utilities save staff time and reduce operating expenses.

1988-05-01T23:59:59.000Z

172

Microsoft Word - ASC2010-hts-after-review-v1.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

3 1 3 1  Abstract-This paper presents the goal and status of the high field High Temperature Superconductor (HTS) solenoid program funded through a series of SBIRs. The target of this R&D program is to build HTS coils that are capable of producing fields greater than 20 T when tested alone and approaching 40 T when tested in a background field magnet. The solenoid will be made with second generation (2G) high engineering current density HTS tape. To date, 17 HTS pancake coils have been built and tested in the temperature range from 20 K to 80 K. Quench protection, high stresses and minimization of degradation of conductor are some of the major challenges associated with this program. Index Terms-High Temperature Superconductors, HTS,

173

High current pulse transmission cable  

DOE Patents (OSTI)

This invention is comprised of a transmission cable for carrying high current pulses in which an even numbered plurality of electrical conductors surrounds a central ground conductor. Each electrical conductor is connected so that it at any instant in time it will carry current of opposite polarity to the polarity carried by adjacent conductors. This arrangement cancels practically all of the external fields generated by current in the conductors.

Parsons, W.M.

1990-09-28T23:59:59.000Z

174

Superconducting current transformer for testing Nb3Sn cable splicing technique  

SciTech Connect

To provide a quick feedback on different approaches to superconducting cable splicing design and assembly techniques, a superconducting current transformer that can deliver more than 20 kA for testing splice samples has been designed and fabricated. The existing infrastructure of the Short Sample Test Facility at Fermilab, including its cryostat, power supply, and data acquisition system, was used for housing and operating the transformer. This report presents the design features of the transformer and the main results of cable splice tests.

Nicolai Andreev et al.

2002-09-10T23:59:59.000Z

175

Summary of Diagnostic Evaluation for Submarine Cable Cathodic Protection System Performance: Feasibility Assessment of Technologies  

Science Conference Proceedings (OSTI)

This report summarizes the results of an investigation into the operating characteristics of the New York Power Authority's (NYPA) corrosion protection system on the 345kV self-contained fluid-filled (SCFF) submarine cable across Long Island Sound. While directly applicable to the NYPA circuit, the results provide general information that may be useful to all utilities using submarine cable circuits where corrosion may be an issue, including methods to determine the operating characteristics and efficien...

2001-07-20T23:59:59.000Z

176

Joint Assessment of Cable Damage and Quantification of Effects from Fire (JACQUE-FIRE)  

Science Conference Proceedings (OSTI)

Volume 1 of this report documents the results of a Phenomena Identification and Ranking Table (PIRT) exercise that was undertaken on fire-induced electrical circuit failures that may occur in nuclear power plants when cables are damaged by fires. Volume 2 documents the PRA expert elicitation results and will include the best estimate conditional probabilities of hot short-induced spurious operations of control circuits, given fire damage to associated cables. This program was sponsored ...

2012-10-31T23:59:59.000Z

177

Assessment and Testing of High-Pressure Fluid-Filled (HPFF) Cables  

Science Conference Proceedings (OSTI)

The Niagara Power Project of the New York Power Authority (NYPA) includes the Robert Moses Power Plant (RMPP), the Lewiston Pumping Generation Plant (LPGP) and a substation that connects the output of these facilities to the NYPA transmission system. Both of the power plants were built in 1961. The high-pressure fluid-filled (HPFF) cable systems at these two facilities have been in operation for more than 40 years. NYPA required an assessment of the condition and life expectancy of the HPFF cable systems...

2007-03-29T23:59:59.000Z

178

Nano-Composite Dielectrics on Medium-Voltage Model Cables  

Science Conference Proceedings (OSTI)

EPRI early recognized the potential for nanotechnology in power distribution and started a program in 2003 to explore the possibilities of using the technology to enhance the properties of high-voltage (HV) cable dielectrics based on both polyethylene and on ethylene-propylene rubber. This research resulted in encouraging findings, particularly for a formulation based on functionalized silicon dioxide nanoparticles in a cross-linked polyethylene (XLPE) polymer. Following this success, EPRI entered into a...

2007-12-19T23:59:59.000Z

179

Literature review of environmental qualification of safety-related electric cables: Summary of past work. Volume 1  

Science Conference Proceedings (OSTI)

This report summarizes the findings from a review of published documents dealing with research on the environmental qualification of safety-related electric cables used in nuclear power plants. Simulations of accelerated aging and accident conditions are important considerations in qualifying the cables. Significant research in these two areas has been performed in the US and abroad. The results from studies in France, Germany, and Japan are described in this report. In recent years, the development of methods to monitor the condition of cables has received special attention. Tests involving chemical and physical examination of cable`s insulation and jacket materials, and electrical measurements of the insulation properties of cables are discussed. Although there have been significant advances in many areas, there is no single method which can provide the necessary information about the condition of a cable currently in service. However, it is possible that further research may identify a combination of several methods that can adequately characterize the cable`s condition.

Subudhi, M. [Brookhaven National Lab., Upton, NY (United States)

1996-04-01T23:59:59.000Z

180

Development of extruded and molded straight joint for ultra high-voltage XLPE cable  

Science Conference Proceedings (OSTI)

In Japan, 154-kV crosslinked polyethylene-insulated cables (XLPE) are already in use for long-distance tranmission lines, but 275-kV XLPE cables are used only for short-distance lines (without joints) on the premises of power-generation plants and substations. 275-kV XLPE cable is expected to be used for long-distance transmission lines in the near future because of its overall cost advantage. To respond to this need, a straight-through joint with the same reliability as the cable should be developed. Reliable joints should be formed and molded with the same curable PE compounds as the cable insulation. At present, 154-kV XLPE cables for long-distance transmission lines are usually constructed with the joint comprising XLPE insulation wrapped with curable PE tape and molded by heating. However, this taped molded joint has the disadvantages of troublesome tape handling. On the other hand, extruded molded joints are constructed by injecting curable melted PE into a mold with an extruder, eliminating contamination. The report describes the characteristics of the extruded and molded joint developed for 154, 275 and 500 kV class XLPE cables.

Shimomura, T.; Ando, K.; Asahi, K.; Sugiyama, K.

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Restoration and testing of an HTS fault current controller  

Science Conference Proceedings (OSTI)

A three-phase, 1200 A, 12.5 kV fault current controller using three HTS 4 mH coils, was built by industry and tested in 1999 at the Center Substation of Southern California Edison in Norwalk, CA. During the testing, it appeared that each of the three single-phase units had experienced a voltage breakdown, one externally and two internally. Los Alamos National Laboratory (LANL) was asked by DOE to restore the operation of the fault current controller provided the HTS coils had not been damaged during the initial substation tests. When the internally-failed coil vacuum vessels were opened it became evident that in these two vessels, a flashover had occurred at the high voltage bus section leading to the terminals of the superconducting coil. An investigation into the failure mechanism resulted in six possible causes for the flashover. Based on these causes, the high voltage bus was completely redesigned. Single-phase tests were successfully performed on the modified unit at a 13.7 kV LANL substation. This paper presents the postulated voltage flashover failure mechanisms, the new high voltage bus design which mitigates the failure mechanisms, the sequence of tests used to validate the new design, and finally, the results of variable load and short-circuit tests with the single-phase unit operating on the LANL 13.7 kV substation.

Waynert, J. A. (Joseph A.); Boenig, H. (Heinrich E.); Mielke, C. H. (Charles H.); Willis, J. O. (Jeffrey O.); Burley, B. L. (Burt L.)

2002-01-01T23:59:59.000Z

182

HTS Magnets for Advanced Magnetoplasma Space Propulsion Applications  

SciTech Connect

Plasma rockets are being considered for both Earth-orbit and interplanetary missions because their extremely high exhaust velocity and ability to modulate thrust allow very efficient use of propellant mass. In such rockets, a hydrogen or helium plasma is RF-heated and confined by axial magnetic fields produced by coils around the plasma chamber. HTS coils cooled by the propellant are desirable to increase the energy efficiency of the system. We describe a set of prototype high-temperature superconducting (HTS) coils that are being considered for the VASIMR ( Variable Specific Impulse Magnetoplasma Rocket) thruster proposed for testing on the Radiation Technology Demonstration (RTD) satellite. Since this satellite will be launched by the Space Shuttle, for safety reasons liquid helium will be used as propellant and coolant. The coils must be designed to operate in the space environment at field levels of 1 T. This generates a unique set of requirements. Details of the overall winding geometry and current density, as well as the challenging thermal control aspects associated with a compact, minimum weight design will be discussed.

Carte, M.D.; Chang-Diaz, F.R. Squire, J.P.; Schwenterly, S.W.

1999-07-12T23:59:59.000Z

183

Fastbus cable segment extender based on TTL  

Science Conference Proceedings (OSTI)

A method to drive a FASTBUS cable segment over long distance is described. The signal level transmitted is converted from standard FASTBUS cable segment signal to a TTL differential output; the scheme increases noise immunity. In addition, the receiver has a wide tolerance of common mode range of +/-15 V. By applying a deskewing mechanism in the extender module, we have achieved more than 10/sup 10/ transactions of FASTBUS without any error with a cable length of 100 m.

Ikeda, H.; Yamauchi, M.

1986-10-01T23:59:59.000Z

184

Cable Pushing and Calculation of Pulling Tensions for Distribution and Transmission Cables  

Science Conference Proceedings (OSTI)

Traditional techniques for the installation of cable into conduit systems require pulling the cable with a rope attached to the leading end. EPRI has demonstrated that cable pushing can significantly reduce pulling forces, allow longer cable lengths to be pulled safely, and reduce the number of manholes and splices in a circuit. These benefits can result in direct savings for the utility and increased reliability for the customer.

1997-01-06T23:59:59.000Z

185

Capacitor discharge process for welding braided cable  

SciTech Connect

A capacitor discharge process for welding a braided cable formed from a plurality of individual cable strands to a solid metallic electrically conductive member comprises the steps of: (a) preparing the electrically conductive member for welding by bevelling one of its end portions while leaving an ignition projection extending outwardly from the apex of the bevel; (b) clamping the electrically conductive member in a cathode fixture; (c) connecting the electrically conductive member clamped in the cathode fixture to a capacitor bank capable of being charged to a preselected voltage value; (d) preparing the braided cable for welding by wrapping one of its end portions with a metallic sheet to form a retaining ring operable to maintain the individual strands of the braided cable in fixed position within the retaining ring; (e) clamping the braided cable and the retaining ring as a unit in an anode fixture so that the wrapped end portion of the braided cable faces the ignition projection of the electrically conductive member; and (f) moving the cathode fixture towards the anode fixture until the ignition projection of the electrically conductive member contacts the end portion of the braided cable thereby allowing the capacitor bank to discharge through the electrically conductive member and through the braided cable and causing the electrically conductive member to be welded to the braided cable via capacitor discharge action.

Wilson, Rick D. (Corvallis, OR)

1995-01-01T23:59:59.000Z

186

Efficient cable arrangement in cable stayed bridges based on sensitivity analysis of aeroelastic behaviour  

Science Conference Proceedings (OSTI)

Construction of cable supported bridges has experienced a great impulse in the past decade. Bridges having more than 800m of span length were built in France and Japan and some bridges with span length of more than 1km are going to be built, such as ... Keywords: Aeroelastic analysis, Cable configuration, Cable stayed bridges, Efficient structural design, Sensitivity analysis

Jos . Jurado; Flix Nieto; Santiago Hernndez; Alejandro Mosquera

2008-09-01T23:59:59.000Z

187

Design Construction and Test Results of a HTS Solenoid For Energy Recovery Linac  

SciTech Connect

An innovative feature of the proposed Energy Recovery Linac (ERL) is the use of a solenoid made with High Temperature Superconductor (HTS) with the Superconducting RF cavity. The use of HTS allows solenoid to be placed in close proximity to the cavity and thus provides early focusing of the electron beam. In addition, cryogenic testing at {approx}77 K is simpler and cheaper than 4 K testing. This paper will present the design, construction and test results of this HTS solenoid. The HTS solenoid in the proposed ERL will be situated in the transition region between the superconducting cavity at {approx}4 K and the cryostat at the room temperature. Solenoid inside the cryogenic structure provides an early focusing and hence low emittance beam. The temperature in the transition region will be too high for a conventional low temperature superconductor and resistive heat load from copper coils will be too high on cryogenic system. HTS coils also allow much higher current density and significant reduction in size as compared to copper coils. Hence HTS solenoid provide a unique and technically superior solution. The use of a HTS solenoid with superconducting cavity offers a unique option as it can be placed in a cold to warm transition region to provide early focussing without using additional space. Construction and test results so far are very encouraging for its use in the ERL project.

Anerella, M; Ben-Zvi, I; Kayran, D; McIntyre, G; Muratore, J; Plate, S; Sampson, W; Cole, M

2011-03-28T23:59:59.000Z

188

Vids4Grids: Smart Meters and Super Cables | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Grids: Smart Meters and Super Cables Grids: Smart Meters and Super Cables Vids4Grids: Smart Meters and Super Cables March 14, 2011 - 4:46pm Addthis This episode of Vids 4 Grids will take us to Itron's smart meter factory in West Union, SC where we will learn the role smart meters play in the Smart Grid. Deborah J. Buterbaugh Energy Project Specialist at National Energy Technology Laboratory What does this mean for me? Smart meters allow consumers to get real time information about their energy usage. Super cables help provide more reliable electricity to your home. In January we introduced you to the Vids4Grids project, a series of videos targeting students in high school and starting college. Through integration into curricula and online posting for open viewing, the project aims to increase awareness and create interest in power systems careers to help

189

Vids4Grids: Smart Meters and Super Cables | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Vids4Grids: Smart Meters and Super Cables Vids4Grids: Smart Meters and Super Cables Vids4Grids: Smart Meters and Super Cables March 14, 2011 - 4:46pm Addthis This episode of Vids 4 Grids will take us to Itron's smart meter factory in West Union, SC where we will learn the role smart meters play in the Smart Grid. Deborah J. Buterbaugh Energy Project Specialist at National Energy Technology Laboratory What does this mean for me? Smart meters allow consumers to get real time information about their energy usage. Super cables help provide more reliable electricity to your home. In January we introduced you to the Vids4Grids project, a series of videos targeting students in high school and starting college. Through integration into curricula and online posting for open viewing, the project aims to increase awareness and create interest in power systems careers to help

190

A Superconducting transformer system for high current cable testing  

E-Print Network (OSTI)

A Superconducting Transformer System for High Current CableDC) superconducting transformer system for the high currentsuperconducting cables. The transformer consists of a core-

Godeke, A.

2010-01-01T23:59:59.000Z

191

Wire Making Techniques - HTS Coated Conductors - Fact Sheet  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rolling Assisted Biaxially Textured Substrates (RABiTS Rolling Assisted Biaxially Textured Substrates (RABiTS TM ) coated conductors, characterized by their low cost and simple architecture, promise to meet industry price and performance targets. Introduction Since the discovery of high-temperature superconductors (HTS), notably YBa 2 Cu 3 O 7 (YBCO), researchers at the U.S. Department of Energy's (DOE) national laboratories have searched for ways to manufacture affordable flexible wires with high current density. One of the chief obstacles to the manufacture of commercial lengths of YBCO wire has been the phenomenon of weak links, which exist where current crosses a non-superconducting region such as a grain boundary. By aligning grains carefully, low angle boundaries between superconducting grains are assured, which

192

Electrical and Mechanical Characterizations of Nanocomposite Insulation for HTS Systems  

Science Conference Proceedings (OSTI)

As HTS wire technology continues to advance, a critical need has emerged for dielectric materials that can be used in superconducting components such as terminations, fault current limiters, transformers, and motors. To address this need, CTD is developing nanocomposite insulations based on epoxy and benzoxazine chemistries. Depending on part geometry, some processing methods are more efficient than others. For this reason, CTD is investigating both fiber-reinforced and filled resin systems for use in these applications. A thorough set of electrical testing including AC breakdown, breakdown as a function of thickness, and flashover shows promising performance characteristics. In addition, mechanical testing (short beam shear and compression) indicate that these new materials to have as good or better performance than G10.

Walsh, J K [Composite Technology Development, Inc., Lafayette, CO; Fabian, Paul E [Composite Technology Development, Inc., Lafayette, CO; Hooker, M W [Composite Technology Development, Inc., Lafayette, CO; Lizotte, M J [Composite Technology Development, Inc., Lafayette, CO; Tuncer, Enis [ORNL; Sauers, Isidor [ORNL

2011-01-01T23:59:59.000Z

193

Study of HTS Insert Coils for High Field Solenoids  

SciTech Connect

Fermilab is currently working on the development of high field magnet systems for ionization cooling of muon beams. The use of high temperature superconducting materials (HTS) is being considered for these solenoids using Helium refrigeration. Several studies have been performed on insert coils made of BSCCO-2223 tapes and second generation (2G) YBCO coated conductors, which are tested at various temperatures and at external fields of up to 14 T. Critical current (I{sub c}) measurements of YBCO short samples are presented as a function of bending stress, magnetic field and field orientation with respect to the sample surface. An analytical fit of critical current data as a function of field and field orientation is also presented. Results from several single-layer and double-layer pancake coils are also discussed.

Lombardo, Vito; /Fermilab

2009-09-01T23:59:59.000Z

194

An Internal Coaxil Cable Seal System  

DOE Patents (OSTI)

The invention is a seal system for a coaxial cable more specifically an internal seal system placed within the coaxial cable and its constituent components. A series of seal stacks including flexible rigid rings and elastomeric rings are placed on load bearing members within the coaxial cable. The current invention is adapted to seal the annular space between the coaxial cable and an electrical contact passing there through. The coaxial cable is disposed within drilling components to transmit electrical signals between drilling components within a drill string. During oil and gas exploration, a drill string can see a range of pressures and temperatures thus resulting in multiple combinations of temperature and pressure and increasing the difficulty of creating a robust seal for all combinations. The seal system can be used in a plurality of downhole components, such as sections of pipe in a drill string, drill collars, heavy weight drill pipe, and jars.

Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David (Lehi, UT); Dahlgren, Scott (Provo, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT); Fox, Joe (Spanish Fork, UT)

2004-12-23T23:59:59.000Z

195

Underwater splice for submarine coaxial cable  

SciTech Connect

The invention is a device for splicing submarine coaxial cable underwater on the seafloor with a simple push-on operation to restore and maintain electrical and mechanical strength integrity; the splice device is mateable directly with the severed ends of a coaxial cable to be repaired. Splicing assemblies comprise a dielectric pressure compensating fluid filled guide cavity, a gelled castor oil cap and wiping seals for exclusion of seawater, electrical contacts, a cable strength restoration mechanism, and a pressure compensation system for controlled extrusion of and depletion loss prevention of dielectric seal fluid during cable splicing. A splice is made underwater by directly inserting prepared ends of coaxial cable, having no connector attachments, into splicing assemblies.

Inouye, A.T.; Roe, T. Jr.; Tausing, W.R.; Wilson, J.V.

1984-10-30T23:59:59.000Z

196

Engineering Technical Training Module - Cable Separation, Version 1.0  

Science Conference Proceedings (OSTI)

This ETTM provides a self-paced, asynchronous learning experience for engineers to be accessed on their own time in their nuclear power plant environment. This training will be used primarily by engineers to train them on cable and wire separation, including the types and classifications of separation used in commercial nuclear power plants. Browser: Internet Explorerversion 7.0/8.0/9.0, Mozilla version 3.0 Operating System: WindowsXP, Vistaand 7 Screen Resolution: 1024 x 768 Animations: AdobeFlash Playe...

2012-08-03T23:59:59.000Z

197

Methods for Cleaning and Evaluating Pipe-Type Cable Pipes for Retrofit with Extruded Dielectric Cable Systems  

Science Conference Proceedings (OSTI)

This report summarizes studies of pipe cleaning, "pigging," inspecting, and testing pipe-type cable pipes for re-conditioning as conduits compatible with extruded dielectric cables.

2001-12-12T23:59:59.000Z

198

Design Construction and Test Results of a HTS Solenoid for Energy Recovery Linac  

NLE Websites -- All DOE Office Websites (Extended Search)

DESIGN CONSTRUCTION AND TEST RESULTS OF A HTS SOLENOID DESIGN CONSTRUCTION AND TEST RESULTS OF A HTS SOLENOID FOR ENERGY RECOVERY LINAC* R. Gupta # , M. Anerella, I. Ben-Zvi, G. Ganetis, D. Kayran, G. McIntyre, J. Muratore, S. Plate and W. Sampson, Brookhaven National Laboratory, Upton, NY, 11973 USA and M. Cole and D. Holmes, Advanced Energy Systems, Inc., Medord, NY, 11763 USA Abstract An innovative feature of the proposed Energy Recovery Linac (ERL) is the use of a solenoid made with High Temperature Superconductor (HTS) with the Superconducting RF cavity. The use of HTS allows solenoid to be placed in close proximity to the cavity and thus provides early focusing of the electron beam. In addition, cryogenic testing at ~77 K is simpler and cheaper than 4 K testing. This paper will present the

199

Tool for cutting insulation from electrical cables  

DOE Patents (OSTI)

This invention is an efficient hand tool for precisely slitting the sheath of insulation on an electrical cable--e.g., a cable two inches in diameter--in a manner facilitating subsequent peeling or stripping of the insulation. The tool includes a rigid frame which is slidably fitted on an end section of the cable. The frame carries a rigidly affixed handle and an opposed, elongated blade-and-handle assembly. The blade-and-handle assembly is pivotally supported by a bracket which is slidably mounted on the frame for movement toward and away from the cable, thus providing an adjustment for the depth of cut. The blade-and-handle assembly is mountable to the bracket in two pivotable positions. With the assembly mounted in the first position, the tool is turned about the cable to slit the insulation circumferentially. With the assembly mounted in the second position, the tool is drawn along the cable to slit the insulation axially. When cut both circumferentially and axially, the insulation can easily be peeled from the cable.

Harless, Charles E. (Metropolis, IL); Taylor, Ward G. (Vienna, IL)

1978-01-01T23:59:59.000Z

200

Development of spherical-trailer-type cable reel mechanism  

Science Conference Proceedings (OSTI)

Cabled communication is considered to be more useful than wireless communication for rescue robots used in post-disaster environments. The cable can not only provide good signal communication but also contribute to assist to retrieve the robot. However, ... Keywords: cable oscillating movement, cable reel mechanism, rescue-robot, spatial cam, spherical trailer

Masayuki Arai; Shigeo Hirose

2007-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Armored instrumentation cable for geothermal well logging  

DOE Green Energy (OSTI)

Multiconductor armored well-logging cable is used extensively by the oil and natural gas industry to lower various instruments used to measure the geological and geophysical parameters into deep wellbores. Advanced technology in oil-well drilling makes it possible to achieve borehole depths of 9 km (30,000 ft). The higher temperatures in these deeper boreholes demand advancements in the design and manufacturing of wireline cable and in the electrical insulating and armoring materials used as integral components. If geothermal energy is proved an abundant economic resource, drilling temperatures approaching and exceeding 300/sup 0/C will become commonplace. The adaptation of teflons as electrical insulating material permitted use of armored cable in geothermal wellbores where temperatures are slightly in excess of 200/sup 0/C, and where the concentrations of corrosive minerals and gases are high. Teflon materials presently used in wireline cables, however, are not capable of continuous operation at the anticipated higher temperatures.

Dennis, B.R.; Johnson, J.; Todd, B.

1981-01-01T23:59:59.000Z

202

Transmission Cable Life Evaluation and Management  

Science Conference Proceedings (OSTI)

High-pressure fluid-filled (HPFF) transmission cable systems constitute nearly 80 percent of the transmission cables in the United States, and represent an estimated $18 billion investment, in present-day dollars. Many of these systems are reaching or have exceeded their design life of 40 years, and evaluating their condition and remaining life is of utmost importance to utilities seeking to make full use of their underground transmission assets. This report describes procedures and diagnostic tools for ...

1998-12-24T23:59:59.000Z

203

Cable Polymer Aging and Condition Monitoring Research at Sandia National Laboratories Under the Nuclear Energy Plant Optimization (NEPO) Program  

Science Conference Proceedings (OSTI)

This report describes cable polymer aging and condition monitoring research performed at Sandia National Laboratories under the Nuclear Energy Plant Optimization (NEPO) Program from 2000 to 2005. The research results apply to low-voltage cable insulation and jacket materials that are commonly used in U.S. nuclear power plants. The research builds upon and is linked to research performed at Sandia from 1977 through 1986, sponsored by the U.S. Nuclear Regulatory Commission. Aged and unaged specimens from t...

2005-12-20T23:59:59.000Z

204

Use of superconductive technology for energy storage and power transmission for large power systems: power parks  

DOE Green Energy (OSTI)

A general review and technology assessment of superconducting magnets for energy storage and superconducting cables for power transmission are presented. It is concluded that the technology is now available for applying superconductivity in the power industry. (TFD)

Keller, W.E.

1977-01-01T23:59:59.000Z

205

Solid state safety jumper cables  

DOE Patents (OSTI)

This invention consists of solid state jumper cables for connecting two batteries in parallel, having two bridge rectifiers for developing a reference voltage, a four-input decoder for determining which terminals are to be connected based on a comparison of the voltage at each of the four terminals to the reference voltage, and a pair of relays for effecting the correct connection depending on the determination of the decoder. No connection will be made unless only one terminal of each battery has a higher voltage than the reference voltage, indicating positive'' terminals, and one has a lower voltage than the reference voltage, indicating C{sup 2} negative terminals, and that, therefore, the two high voltage terminals may be connected and the two lower voltage terminals may be connected. Current flows once the appropriate relay device is closed. The relay device is preferably a MOSFET (metal oxide semiconductor field effect transistor) combined with a series array of photodiodes that develop MOSFET gate-closing potential when the decoder output causes an LED to light.

Kronberg, J.W.

1991-01-22T23:59:59.000Z

206

Solid state safety jumper cables  

DOE Patents (OSTI)

Solid state jumper cables for connecting two batteries in parallel, having two bridge rectifiers for developing a reference voltage, a four-input decoder for determining which terminals are to be connected based on a comparison of the voltage at each of the four terminals to the reference voltage, and a pair of relays for effecting the correct connection depending on the determination of the decoder. No connection will be made unless only one terminal of each battery has a higher voltage than the reference voltage, indicating positive'' terminals, and one has a lower voltage than the reference voltage, indicating negative'' terminals, and that, therefore, the two high voltage terminals may be connected and the two lower voltage terminals may be connected. Current flows once the appropriate relay device is closed. The relay device is preferably a MOSFET (metal oxide semiconductor field effect transistor) combined with a series array of photodiodes that develop MOSFET gate-closing potential when the decoder output causes an LED to light.

Kronberg, J.W.

1993-02-23T23:59:59.000Z

207

Solid state safety jumper cables  

DOE Patents (OSTI)

Solid state jumper cables for connecting two batteries in parallel, having two bridge rectifiers for developing a reference voltage, a four-input decoder for determining which terminals are to be connected based on a comparison of the voltage at each of the four terminals to the reference voltage, and a pair of relays for effecting the correct connection depending on the determination of the decoder. No connection will be made unless only one terminal of each battery has a higher voltage than the reference voltage, indicating "positive" terminals, and one has a lower voltage than the reference voltage, indicating "negative" terminals, and that, therefore, the two high voltage terminals may be connected and the two lower voltage terminals may be connected. Current flows once the appropriate relay device is closed. The relay device is preferably a MOSFET (metal oxide semiconductor field effect transistor) combined with a series array of photodiodes that develop MOSFET gate-closing potential when the decoder output causes an LED to light.

Kronberg, James W. (353 Church Rd., Beech Island, SC 29841)

1993-01-01T23:59:59.000Z

208

Solid state safety jumper cables  

DOE Patents (OSTI)

This invention consists of solid state jumper cables for connecting two batteries in parallel, having two bridge rectifiers for developing a reference voltage, a four-input decoder for determining which terminals are to be connected based on a comparison of the voltage at each of the four terminals to the reference voltage, and a pair of relays for effecting the correct connection depending on the determination of the decoder. No connection will be made unless only one terminal of each battery has a higher voltage than the reference voltage, indicating ``positive`` terminals, and one has a lower voltage than the reference voltage, indicating C{sup 2} negative terminals, and that, therefore, the two high voltage terminals may be connected and the two lower voltage terminals may be connected. Current flows once the appropriate relay device is closed. The relay device is preferably a MOSFET (metal oxide semiconductor field effect transistor) combined with a series array of photodiodes that develop MOSFET gate-closing potential when the decoder output causes an LED to light.

Kronberg, J.W.

1991-01-22T23:59:59.000Z

209

Novel Applications of Fiber Optic Sensor Technology for Diagnostics of Underground Cables  

Science Conference Proceedings (OSTI)

This report provides an overview of the state of the art in the use of fiber optics in measurement applications, with particular regard to applications suitable for measuring or monitoring significant parameters for underground power cables. The report summarizes the physics of fiber-based measurement systems and discusses what measurement systems can be implemented today with commercial or near-commercial equipment.

2004-10-25T23:59:59.000Z

210

Field Partial Discharge Measurements on Extruded Dielectric Transmission Cable Systems - State of the Art  

Science Conference Proceedings (OSTI)

This report describes a review of technical literature, Electric Power Research Institute (EPRI) technical reports, and industry guides to determine the current state of the art for field partial discharge (PD) measurements on extruded dielectric transmission cable systems. Emphasis is placed on the interpretation of field PD measurement test results.

2008-03-26T23:59:59.000Z

211

STUDY OF ACCELERATED AGING OF 15 kV XLPE AND EPR CABLE INSULATION BY SWITCHING IMPULSES AND ELEVATED AC VOLTAGE.  

E-Print Network (OSTI)

?? Accelerated aging of 15 kV Cross-linked Polyethylene (XLPE) and Ethylene Propylene Rubber (EPR) power cables was carried out in the experiments set for the (more)

Cao, Linfeng

2010-01-01T23:59:59.000Z

212

Assembly and testing of a composite heat pipe thermal intercept for HTS current leads  

SciTech Connect

We are building high temperature superconducting (HTS) current leads for a demonstration HTS-high gradient magnetic separation (HGMS) system cooled by a cryocooler. The current leads are entirely conductively cooled. A composite nitrogen heat pipe provides efficient thermal communication, and simultaneously electrical isolation, between the lead and an intermediate temperature heat sink. Data on the thermal and electrical performance of the heat pipe thermal intercept are presented. The electrical isolation of the heat pipe was measured as a function of applied voltage with and without a thermal load across the heat pipe. The results show the electrical isolation with evaporation, condensation and internal circulation taking place in the heat pipe.

Daugherty, M.A.; Daney, D.E.; Prenger, F.C.; Hill, D.D.; Williams, P.M.; Boenig, H.J.

1995-09-01T23:59:59.000Z

213

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

No. 2 Superconducting Magnets for Particle Accelerators Ramesh Gupta , BNL RISP, ISB, Korea, August 22, 2012 Outline * High Temperature Superconductors (HTS) * HTS magnet program...

214

Evaluation of Pipe-Type Cable Joint Restraint Systems  

Science Conference Proceedings (OSTI)

Joints in underground transmission pipe-type cables must be designed to accommodate the thermomechanical forces created as a cable heats and cools in operation. This report details an investigation of several joint restraining designs and recommends one design.

1990-04-06T23:59:59.000Z

215

Apparatus producing constant cable tension for intermittent demand  

DOE Patents (OSTI)

This invention relates to apparatus for producing constant tension in cable or the like when it is unreeled and reeled from a drum or spool under conditions of intermittent demand. The invention is particularly applicable to the handling of superconductive cable, but the invention is also applicable to the unreeling and reeling of other strands, such as electrical cable, wire, cord, other cables, fish line, wrapping paper and numerous other materials.

Lauritzen, T.

1984-05-23T23:59:59.000Z

216

Underground Cable Fault Location Reference and Application Guide  

Science Conference Proceedings (OSTI)

This report summarizes underground cable fault location methods and details the application of the methods for transmission and distribution cable systems. It summarizes both terminal location and tracer location methods that can be applied to transmission and distribution cable systems. The report is an update to a summary of fault location methods. It provides practical technical material in the art and science of locating cable faults, including a description of common fault location instruments and p...

2011-12-23T23:59:59.000Z

217

Elevation cable modeling for interactive simulation of cranes  

Science Conference Proceedings (OSTI)

In this paper, the way to simulate hoisting cables in real time is addressed. We overcome instability in such simulation by considering a two-layered model: a model for the dynamics of a cable passing through a set of pulleys and an oscillation model ... Keywords: flexible cables, interactive simulation, physically-based animation

Ignacio Garca-Fernndez; Marta Pla-Castells; Rafael J. Martnez-Dur

2008-07-01T23:59:59.000Z

218

A Review of Nondestructive Evaluation Technologies for Cable System Integrity  

Science Conference Proceedings (OSTI)

This report provides an overview of common electrical cable types and designs, damage mechanisms, and existing test methods. It describes a technology review focused on assessing feasibility, performance, and limitations of nondestructive evaluation (NDE) technologies for cable integrity tests and inspection and summarizes future proposed work.BackgroundKnowing a cable systems condition is essential to ensure the reliability of the connected ...

2013-11-21T23:59:59.000Z

219

Shaft mines can get power without armor  

Science Conference Proceedings (OSTI)

A Pennsylvania coal operator has been able to install neoprene jacketed mine power feeder (MPF) cable in an airshaft without the use of expensive armored power cables. Armored cables traditionally have been favored in applications where the cable is dropped vertically because their galvanized metal shielding protects the cable as it is dragged across rough ground and stretched by its own weight as it is lowered into the hole. But armored cable poses some problems. It is as much as $20 per foot more expensive than MPF cable. Also, sinking armored cables is particularly difficult when space is limited because the cable must be laid out on the ground before it is lowered into the hole. The technique that allowed Pennsylvania Mines Corp. to install two 750-ft-long, 15-kv cables at is 400,000-tpy Tunnelton mine, near New Alexandria, Pa., was devised by J.H. Service Co.'s Indianola, Pa., branch office. The method involves feeding MPF cable from a spool on a truck equipped with special braking devices, over a steel drum that acts as a sheave, directly into a mine shaft or borehole. Robert C. Kadyk, a sales manager with J.H. Service, says that while this is not the first time standard MPF cable has been used in a borehole or shaft, the cables are not usually used in these cases because there were no dependable methods for holding the cable steady as it was lowered into the hole to keep it from abrading against the sides of the borehole or shaft. Also, dragging MPF cable through the woods invariably damages it. With its cable sinking method, J.H. Service vulcanizes stainless steel kellems grips into the cable about every 100 ft. The interval varies with the weight and diameter of the cable, depth of the hole, and length of the kellems grip. One twisted steel messenger wire is attached to each kellems grip to displace the weight of the cable as it takes its trip to the mine floor.

Brezovec, D.

1984-02-01T23:59:59.000Z

220

Plant Engineering: Cable Aging Management Training: Identification of Adverse Environment, and Introduction to Visual/ Tactile Asses sment of Cable  

Science Conference Proceedings (OSTI)

Two cable aging management training modules are included that introduce the viewer to adverse environments and their effects on cable polymers and to visual tactile assessment of cables to determine if they have degraded from the adverse environments. The types of environments that are adverse with respect to cable materials and the locations in a plant where they might exist are provided. The visual/tactile presentation shows how basic properties and visual attributes may be used to determine ifcables a...

2011-10-19T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Superconductivity for Electric Systems Program Review LANL Contributions to GE HTS Generator  

E-Print Network (OSTI)

-section · Develop a heat generation profile => thermal analysis #12;Superconductivity for Electric Systems Program analysis of the coolant path ­ Investigated affect of rotation on heat load · Completed initial simulationsSuperconductivity for Electric Systems Program Review LANL Contributions to GE HTS Generator

222

Microminiature coaxial cable and methods manufacture  

DOE Patents (OSTI)

A coaxial cable is provided having a ribbon inner conductor surrounded by a dielectric and a circumferential conductor. The coaxial cable may be microminiature comprising a very thin ribbon strip conductor from between 5 to 15 [mu]m thick and from 150 to 200 [mu]m wide, having a surrounding foamed dielectric or parylene applied thereon by a vapor plasma process and an outer conductor of an adhering high conductivity metal vacuum deposited on the dielectric. Alternately the foam dielectric embodiment may have a contiguous parylene coating applied adjacent the inner conductor or the outer conductor or both. Also, the cable may be fabricated by forming a thin ribbon of strip conductive material into an inner conductor, applying thereabout a dielectric by spraying on a solution of polystyrene and polyethylene and then vacuum depositing and adhering high conductivity metal about the dielectric. The cable strength may be increased by adding glass microfilament fibers or glass microballoons to the solution of polystyrene and polyethylene. Further, the outer conductive layer may be applied by electroless deposition in an aqueous solution rather than by vacuum deposition. A thin coating of parylene is preferably applied to the outer conductor to prevent its oxidation and inhibit mechanical abrasion. 2 figs.

Bongianni, W.L.

1986-04-08T23:59:59.000Z

223

Evaluation of Medium-Voltage Cable Joints  

Science Conference Proceedings (OSTI)

This research is a continuation of work evaluating performance of state-of-the-art joints. Three single-phase cold shrink joints and three "I"-type premolded separable connector joints were evaluated. Two of the separable connectors were rated 600 A and one was rated 900 A; both were installed on ethylene propylene rubber (EPR) 15-kV cables.

2006-09-27T23:59:59.000Z

224

Testing of 3-meter Prototype Fault Current Limiting Cables  

Science Conference Proceedings (OSTI)

Two 3-m long, single-phase cables have been fabricated by Ultera from second generation (2G) superconductor supplied by American Superconductor. The first cable was made with two layers of 2G tape conductor and had a critical current of 5,750 A while the second cable had four layers and a critical current of 8,500 A. AC loss was measured for both cables at ac currents of up to 4 kArms. Ultera performed initial fault current studies of both cables in Denmark with limited currents in the range from 9.1 to 44 kA. Results from these tests will provide a basis for a 25-m long, three-phase, prototype cable to be tested at ORNL early next year and a 300-m long, fault current limiting, superconducting cable to be installed in a ConEd substation in New York City.

Gouge, Michael J [ORNL; Duckworth, Robert C [ORNL; Demko, Jonathan A [ORNL; Rey, Christopher M [ORNL; Thompson, James R [ORNL; Lindsay, David T [ORNL; Tolbert, Jerry Carlton [ORNL; Willen, Dag [Ultera; Lentge, Heidi [Ultera; Thidemann, Carsten [Ultera; Carter, Bill [AMSC

2009-01-01T23:59:59.000Z

225

Armored spring-core superconducting cable and method of construction  

DOE Patents (OSTI)

An armored spring-core superconducting cable (12) is provided. The armored spring-core superconducting cable (12) may include a spring-core (20), at least one superconducting strand (24) wound onto the spring-core (20), and an armored shell (22) that encases the superconducting strands (24). The spring-core (20) is generally a perforated tube that allows purge gases and cryogenic liquids to be circulated through the armored superconducting cable (12), as well as managing the internal stresses within the armored spring-core superconducting cable (12). The armored shell (22) manages the external stresses of the armored spring-core superconducting cable (12) to protect the fragile superconducting strands (24). The armored spring-core superconducting cable (12) may also include a conductive jacket (34) formed outwardly of the armored shell (22).

McIntyre, Peter M. (611 Montclair, College Station, TX 77840); Soika, Rainer H. (1 Hensel, #X4C, College Station, TX 77840)

2002-01-01T23:59:59.000Z

226

Underground Transmission Cable System Installation and Construction Practices Manual  

Science Conference Proceedings (OSTI)

Installation and construction remain the most expensive implementation components of underground transmission cable systems. Recent advancements in underground transmission have led to more demand for best practices and innovative ways to reduce installation and construction costs in a cable project. EPRI has funded many projects over the years to improve the efficiency and reduce the cost of underground transmission cable installation. Other organizations such as Association of Edison Illuminating Compa...

2009-12-22T23:59:59.000Z

227

Plant Engineering: Cable Aging Management Program Implementation Guidance  

Science Conference Proceedings (OSTI)

This report describes issues identified during the initial implementation of low- and medium-voltage cable aging management programs by utilities and presents possible resolutions and guidance.

2011-12-01T23:59:59.000Z

228

PROPOSAL Characterization of Field and Lab Aged Cables  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DoE Peer Review Nov 2010 2 * Underground cable system infrastructure is complex and aging. * Failures are increasing * If not addressed then old infrastructure will not support...

229

Recycling of Cross-linked Polyethylene Cable Waste via Mechanical ...  

Science Conference Proceedings (OSTI)

Cable industry in UAE contributes in large amount of plastic waste, where the .... Production of Heavy Pipeline Plate for Submarine Gas Transmission Lines at...

230

Published assessments bearing on the future use of ceramic superconductors by the electric power sector  

Science Conference Proceedings (OSTI)

Much has been written about ceramic superconductors since their discovery in 1986. Most of this writing reports and describes scientific research. However, some authors have sought to put this research in context: to assess where the field stands, what might be technically feasible, what might be economically feasible, and what potential impacts ceramic superconductors will bring to the electric power sector. This report's purpose is to make the results of already published assessments readily available. To that end, this report lists and provides abstracts for various technical and economic assessments related to applications of High-Temperature Superconductors (HTS) to the electric power sector. Those studies deemed most important are identified and summarized. These assessments were identified by two means. First, members of the Executive Committee identified some reports as worthy of consideration and forwarded them to Argonne National Laboratory. Twelve assessments were selected. Each of these is listed and summarized in the following section. Second, a bibliographic search was performed on five databases: INSPEC, NTIS, COMPENDEX, Energy Science Technology, and Electric Power Database. The search consisted of first selecting all papers related to High Temperature Superconductors. Then papers related to SMES, cables, generators, motors, fault current limiters, or electric utilities were selected. When suitable variants of the above terms were included, this resulted in a selection of 493 citations. These citations were subjected to review by the authors. A number of citations were determined to be inappropriate (e.g. a number referred to digital transmission lines for electronics and communications applications). The reduced list consisted of 200 entries. Each of these citations, with an abstract, is presented in the following sections.

Giese, R.F.; Wolsky, A.M.

1992-08-25T23:59:59.000Z

231

Published assessments bearing on the future use of ceramic superconductors by the electric power sector  

Science Conference Proceedings (OSTI)

Much has been written about ceramic superconductors since their discovery in 1986. Most of this writing reports and describes scientific research. However, some authors have sought to put this research in context: to assess where the field stands, what might be technically feasible, what might be economically feasible, and what potential impacts ceramic superconductors will bring to the electric power sector. This report`s purpose is to make the results of already published assessments readily available. To that end, this report lists and provides abstracts for various technical and economic assessments related to applications of High-Temperature Superconductors (HTS) to the electric power sector. Those studies deemed most important are identified and summarized. These assessments were identified by two means. First, members of the Executive Committee identified some reports as worthy of consideration and forwarded them to Argonne National Laboratory. Twelve assessments were selected. Each of these is listed and summarized in the following section. Second, a bibliographic search was performed on five databases: INSPEC, NTIS, COMPENDEX, Energy Science & Technology, and Electric Power Database. The search consisted of first selecting all papers related to High Temperature Superconductors. Then papers related to SMES, cables, generators, motors, fault current limiters, or electric utilities were selected. When suitable variants of the above terms were included, this resulted in a selection of 493 citations. These citations were subjected to review by the authors. A number of citations were determined to be inappropriate (e.g. a number referred to digital transmission lines for electronics and communications applications). The reduced list consisted of 200 entries. Each of these citations, with an abstract, is presented in the following sections.

Giese, R.F.; Wolsky, A.M.

1992-08-25T23:59:59.000Z

232

Increased Power Flow Guidebook  

Science Conference Proceedings (OSTI)

The Increased Power Flow (IPF) Guidebook is a state-of-the-art and best practices guidebook on increasing power flow capacities of existing overhead transmission lines, underground cables, power transformers, and substation equipment without compromising safety and reliability. The Guidebook discusses power system concerns and limiting conditions to increasing capacity, reviews available technology options and methods, illustrates alternatives with case studies, and analyzes costs and benefits of differe...

2005-11-16T23:59:59.000Z

233

LOW-LOSS CABLE AND METHOD OF FABRICATION  

DOE Patents (OSTI)

A radiation-resistant coaxial electrical cable capable of carrying very small currents at high voltages with little leakage is described. The cable comprises an inner axial conductor separated from an outer coaxial tubular conductor by annular layer of fibrous silica insulation. The silica insulation is formed by leaching boron from spun horosilicate glass and then heat treating the silica at a high temperature.

McCarthy, R.L. et al.

1960-09-27T23:59:59.000Z

234

OTEC riser cable system, Phase II: conceptual design  

SciTech Connect

Studies are summarized of conceptual designs of riser cable systems for OTEC pilot plants of both the spar and plantship configurations located at sites off the southeast coast of Puerto Rico. The studies utilize a baseline pilot plant riser cable, the design of which has been developed and reported on in other reports. Baseline riser cable systems for OTEC pilot plants are identified, system hardware consistent with these designs are conceptualized, and comparisons of the various system concepts are provided. It is concluded that there are three riser cable systems feasible for a spar pilot plant platform at the Punta Yeguas site, and two riser cable systems feasible at the plantship pilot plant at the Punta Tuna site. Recommendations for further investigations in the areas of materials, hardware design and pre-installation site surveys are also addressed.

Not Available

1980-10-01T23:59:59.000Z

235

Method for fabricating multi-strand superconducting cable  

DOE Patents (OSTI)

Multi-strand superconducting cables adapted to be used, for example, to wind a magnet are fabricated by directing wire strands inwardly from spools disposed on the perimeter of a rotating disk and wrapping them diagonally around a tapered mandrel with a flattened cross-sectional shape with a core having a wedge-shaped channel. As the cable is pulled axially, flexibly coupled wedge-shaped pieces are continuously passed through the channel in the mandrel and inserted into the cable as an internal support therefor.

Borden, A.R.

1985-04-01T23:59:59.000Z

236

Apparatus and method for fabricating multi-strand superconducting cable  

DOE Patents (OSTI)

Multi-strand superconducting cables adapted to be used, for example, to wind a magnet is fabricated by directing wire strands inwardly from spools disposed on the perimeter of a rotating disk and wrapping them diagonally around a tapered mandrel with a flattened cross-sectional shape with a core having a wedge-shaped channel. As the cable is pulled axially, flexibly coupled wedge-shaped pieces are continuously passed through the channel in the mandrel and inserted into the cable as an internal support therefor.

Borden, Albert R. (El Cerrito, CA)

1986-01-01T23:59:59.000Z

237

Method and apparatus for making multistrand superconducting cable  

DOE Patents (OSTI)

Improved multistrand Rutherford-type superconducting cable is produced in a flattened form with two layers of helically wound strands and in which the strands are alternately twisted about their lengths equally and in opposite directions to provide a flat cable with improved stability. In particular, the cable is made by guiding multifilament wire strands from spools on a rotating turret to a fixed tapered forming mandrel where they are wound diagonally around the mandrel and then rolled into a flattened shape. The spools are located around the periphery of turret and are rotatable about axes in a plane parallel to the turret to unroll the wire.

Royet, J.M.; Armer, R.A.

1989-03-14T23:59:59.000Z

238

An Internal Coaxial Cable Electrical Connector For Use In Downhole Tools  

DOE Patents (OSTI)

A coaxial cable electrical connector more specifically an internal coaxial cable connector placed within a coaxial cable and its constituent components. A coaxial cable connector is in electrical communcation with an inductive transformer and a coaxial cable. The connector is in electrical communication with the outer housing of the inductive transfonner. A generally coaxial center conductor, a portion of which could be the coil in the inductive transformer, passes through the connector, is electrically insulated from the connector, and is in electrical communication with the conductive care of the coaxial cable. A plurality of bulbous pliant tabs on the coaxial cable connector mechanically engage the inside diameter of the coaxial cable thus grounding the transformer to the coaxial cable. The coaxial cable and inductive transformer are disposed within downhole tools to transmit electrical signals between downhole tools within a drill string.

Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Dahlgren, Scott (Provo, UT); Fox, Joe (Spanish Fork, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT)

2005-11-29T23:59:59.000Z

239

Mechanical Effects on Extruded Dielectric Cables and Joints Installed in Underground Transmission Systems in North America  

Science Conference Proceedings (OSTI)

In other parts of the world, cable is directly buried or installed in tunnels; but underground cable systems in North America have traditionally been installed in duct/manhole systems or in pipes. In these settings, cables expand and contract during load cycling; and the resulting mechanical stresses can have an impact on the reliable performance of the cable system. With the increased use of extruded dielectric transmission cable systems, EPRI member utilities are faced with the challenge of evaluating ...

2004-04-08T23:59:59.000Z

240

Development of power facility management services using RFID/USN  

Science Conference Proceedings (OSTI)

In the electric power industry, there are many research projects to stabilise the power and increase the efficiency using ubiquitous technology. Many power utilities control and supervise the transmission line of energy to avoid power failures. In this ... Keywords: #, 47, RFID, RFID&, USN, cable joint, electric power industry, power facility management, radio frequency identification, service framework, ubiquitous sensor networks, wireless networks

Young-Il Kim; Jae-Ju Song; Jin-Ho Shin; Bong-Jae Yi; Hoon Choi

2009-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

A Cable-Borne Tram for Atmospheric Measurements along Transects  

Science Conference Proceedings (OSTI)

A system to make atmospheric measurements from a moving trolley suspended by a stretched cable has been developed. At present, these measurements consist of wind velocity, temperature, humidity, and carbon dioxide concentration, though other ...

S. P. Oncley; K. Schwenz; S. P. Burns; J. Sun; R. K. Monson

2009-03-01T23:59:59.000Z

242

NETL: News Release - Experimental Fiber Optic Cables To Warn...  

NLE Websites -- All DOE Office Websites (Extended Search)

Release Date: January 21, 2003 Experimental Fiber Optic Cables To Warn of Potential Pipeline Damage First Field Test of High-Tech Method for Improving Safety of the Nation's Gas...

243

Cost-reduced Cable Delivery for the 21st Century  

Science Conference Proceedings (OSTI)

This paper addresses the issue of cost-effective optical fibre cable delivery within current projections of fibre build. The implications are generally valid for fibre to the home (FTTH), but additional considerations will apply. The challenge lies in ...

A. J. Mayhew; D. J. Stockton

1998-10-01T23:59:59.000Z

244

Advanced refrigeration system for the Brookhaven superconducting cable project  

SciTech Connect

A description is given of a basic supercritical refrigerator. The present status of the cable enclosure and the types of cooling schemes being considered are presented with some examples of laboratory results and computer analysis. (MOW)

Jensen, J.E.

1975-01-01T23:59:59.000Z

245

Examination of insulation wear modes in geothermal logging cables  

DOE Green Energy (OSTI)

The wear mode of the Tetrafluorethylene (TFE) insulation used on an electrical logging cable is described. The cable examined in this study was used repeatedly in various harsh geothermal environments. Considering the amount of abuse the cable was subjected to, the TFE performed very well. Grooves were formed on the outside of the insulation as a result of the fluid pressure and the loading from the inner layer of metal armor. Also, indentations on the inside of the insulation were caused by the insulation molding to the conductor strands. If this mode of wear were to continue, the conductors would eventually protrude from the insulation and short out against each other or the cable armor. 4 refs., 5 figs.

Grant, T.

1985-01-01T23:59:59.000Z

246

Program on Technology Innovation: Superconducting DC Cable Workshop  

Science Conference Proceedings (OSTI)

This report is a summary of discussions and conclusion from a workshop on the technology of superconducting DC transmission cables. The workshop was held at EPRI in Palo Alto, California on October 12, 13, and 14, 2005. The purpose of the meeting was to bring a small group of experts in technologies relevant to the development of such a cable and to enumerate potential issues, technical challenges, and a timetable for development. The first half of the workshop consisted of short technical presentations,...

2006-03-31T23:59:59.000Z

247

Cost-Effective Cable Insulation: Nanoclay Reinforced Ethylene-Propylene-Rubber for Low-Cost HVDC Cabling  

SciTech Connect

GENI Project: GE is developing new, low-cost insulation for high-voltage direct current (HVDC) electricity transmission cables. The current material used to insulate HVDC transmission cables is very expensive and can account for as much as 1/3 of the total cost of a high-voltage transmission system. GE is embedding nanomaterials into specialty rubber to create its insulation. Not only are these materials less expensive than those used in conventional HVDC insulation, but also they will help suppress excess charge accumulation. The excess charge left behind on a cable poses a major challenge for high-voltage insulationif its not kept to a low level, it could ultimately lead the insulation to fail. GEs low-cost insulation is compatible with existing U.S. cable manufacturing processes, further enhancing its cost effectiveness.

None

2012-02-24T23:59:59.000Z

248

Assessing Deterioration of ADSS Fiber Optic Cables  

E-Print Network (OSTI)

summer day. 3 L.M. Brass, ``ORNL study shows hybrid effect on power distribution'', news release, Oak

249

Subject: Results of Test 5 on Bonded Jacket Electric Cables Dear Satish:  

E-Print Network (OSTI)

As you know, we have recently completed the fifth test in our research program on low-voltage electric cables (JCN W-6465). The objective of this test was to determine if bonded jacket cables have any unique failure mechanisms that are not present in unbondedjacket cables. To achieve this objective, EPR insulated cables with both a bonded and unbonded CSPE jacket were preaged and accident tested. The cables were manufactured by Okonite, Samuel Moore, and Anaconda. As a result of this test, one of the two Okonite cables preaged to simulate 20 years of qualified life, and three of the three Okonite cables preaged to simulate 40 years of qualified life failed catastrophically by splitting open. These results call into question the qualification basis for these cables. The Samuel Moore and Anaconda cables performed acceptably. The enclosed letter report documents the findings of this test. If you have any questions on this, please contact me. Sincerely,

Mr. Satish; K. Aggarwal; Robert J. Lofaro; S. Carfagno; E. Grove

2000-01-01T23:59:59.000Z

250

Increased Power Flow Guidebook - 2012  

Science Conference Proceedings (OSTI)

The EPRI Increased Power Flow (IPF) Guidebook is a state-of-the-art and best- practices reference and guidebook on increasing the power flow capacities of existing overhead transmission lines, underground cables, power transformers, and substation equipment, without compromising safety and reliability. The Guidebook discusses power system concerns and limiting conditions to increasing capacity, reviews available technology options and methods, illustrates the alternatives with case ...

2012-12-31T23:59:59.000Z

251

Increased Power Flow Guidebook - 2013  

Science Conference Proceedings (OSTI)

The EPRI Increased Power Flow (IPF) Guidebook is a state-of-the-art and best- practices reference and guidebook on increasing the power flow capacities of existing overhead transmission lines, underground cables, power transformers, and substation equipment, without compromising safety and reliability. The Guidebook discusses power system concerns and limiting conditions to increasing capacity, reviews available technology options and methods, illustrates the alternatives with case ...

2013-11-18T23:59:59.000Z

252

Termination for a superconducting power transmission line including a horizontal cryogenic bushing  

DOE Patents (OSTI)

A termination for a superconducting power transmission line is disclosed which is comprised of a standard air entrance insulated vertical bushing with an elbow, a horizontal cryogenic bushing linking the pressurized cryogenic cable environment to the ambient temperature bushing and a stress cone which terminates the cable outer shield and transforms the large radial voltage gradient in the cable dielectric into a much lower radial voltage gradient in the high density helium coolant at the cold end of the cryogenic bushing.

Minati, Kurt F. (Northport, NY); Morgan, Gerry H. (Patchogue, NY); McNerney, Andrew J. (Shoreham, NY); Schauer, Felix (Upton, NY)

1984-01-01T23:59:59.000Z

253

Horizontal cryogenic bushing for the termination of a superconducting power-transmission line  

DOE Patents (OSTI)

A termination for a superconducting power transmission line is disclosed which is comprised of a standard air entrance insulated vertical bushing with an elbow, a horizontal cryogenic bushing linking the pressurized cryogenic cable environment to the ambient temperature bushing and a stress cone which terminated the cable outer shield and transforms the large radial voltage gradient in the cable dielectric into a much lower radial voltage gradient in the high density helium coolant at the cold end of the cryogenic bushing.

Minati, K.F.; Morgan, G.H.; McNerney, A.J.; Schauer, F.

1982-07-29T23:59:59.000Z

254

Curing system for high voltage cross linked cables  

DOE Patents (OSTI)

This invention makes extruded, vulcanized, high voltage cables insulated with thermosetting compounds at much higher rates of production and with superior insulation of reduced thickness and with reduced cavities or voids in the insulation. As the cable comes from an extruder, it passes into a curing chamber with a heat booster that quickly raises the insulation to a temperature at which it is cured much more quickly than with steam heating of the prior art. A high temperature liquid in contact with the insulation maintains the high temperature; and because of the greater curing heat, the cable can travel through the curing chamber at a faster rate and into a cooling tube where it contacts with a cooling liquid under high pressure. The insulation compound is treated to reduce the size of cavities; and the high pressure maintained by the curing and cooling mediums prevent expansion of cavities before the insulation is set.

Bahder, George (Edison, NJ); Katz, Carlos (Edison, NJ); Bopp, Louis A. (Fair Haven, NJ)

1978-01-01T23:59:59.000Z

255

Use of high-temperature superconductors in superconducting magnetic energy power sources  

SciTech Connect

The concept of mobile superconducting magnetic energy power sources (SMEPS) is introduced and scrutinized. Use of high-temperature superconductors (HTSs) in mobile SMEPS is discussed. Coil scaling and structural-force calculations for small solenoidal and toroidal coil systems are presented, and the efficiency of system refrigeration as a function of mechanical support, insulation, and power lead thermal losses is estimated. Required HTS properties, derived from considerations developed in this paper, are compared to properties of presently available materials or those expected to evolve in the near term. Analysis verifies the possibility of using SMEPS for military and nonmilitary mobile energy storage and power backup. The results show that the evolution of SMEPS will be stimulated by the development of higher-strength, tougher HTS that can operate at current densities greater than 10{sup 4} A/cm{sup 2} in magnetic fields of 4 to 6 T and temperatures of 77 K or higher. Earliest prototype SMEPS may employ coils cooled by liquid helium with HTS power leads or 20--30 K cryorefrigerated HTS materials that are engineered to withstand coil stresses during charge and discharge. 24 refs. 6 figs., 1 tab.

Palmer, D.N. (ABB/Combustion Engineering, Windsor, CT (USA)); Hull, J.R.; Kuzay, T.M. (Argonne National Lab., IL (USA)); Schoenung, S.M. (Schafer (W.J.) Associates, Inc., Pleasanton, CA (USA))

1990-01-01T23:59:59.000Z

256

Test facility for well logging cables (in air at atmospheric pressure)  

DOE Green Energy (OSTI)

A system has been built to test, in air at ambient pressure, short sections of electromechanical cables which are potentially useful for geothermal well logging service. Electrical characteristics of the test cable are monitored while the cable is exposed to elevated temperature and tensioned in a manner simulating loading experienced by a typical well logging cable. Cable conductor resistance, dielectric resistance and capacitance are measured. The cable can be exposed to bending, simulating that which occurs when passing over sheaves or wound on or off a drum. Cable anchors are arranged to permit nearly 100 percent strength tensioning in the heated section. Electrical connectors are made at the unstrained ends at ambient temperature. The system can also be used to tension test cable terminations at elevated temperatures.

Not Available

1977-02-01T23:59:59.000Z

257

Free and Forced Convective Cooling of Pipe-Type Electric Cables  

Science Conference Proceedings (OSTI)

The objective of this study was to develop methods for estimating the cooling obtainable for pipe-type electric cables by free and forced convective schemes and to provide reliable means for determining current-carrying limits of electric cables.

1977-08-01T23:59:59.000Z

258

C-PAD 2.0 - Cable Polymer Aging Database, Version 2.0  

Science Conference Proceedings (OSTI)

The Cable Polymer Aging Database provides polymer mechanical and chemical property data related to time at stress for key polymers used in electrical cable jackets and insulations for use in aging models and development of condition monitoring.

2005-12-22T23:59:59.000Z

259

ETM (Distribution Network Automation on 10 kV cable line stations...  

Open Energy Info (EERE)

ETM (Distribution Network Automation on 10 kV cable line stations) (Smart Grid Project) Jump to: navigation, search Project Name ETM (Distribution Network Automation on 10 kV cable...

260

Novel Approaches and Alternative Cryogens for Cooling a Superconducting Cable  

Science Conference Proceedings (OSTI)

EPRI has been a pioneer in the development of a long-distance superconducting dc cable, which is described in EPRI report 1020458. There is now worldwide interest in the technology, much of which is based on EPRIs concept. This report extends one aspect of the EPRI design to improve performance and reduce costs. It addresses the issue of using liquid air as the cryogenic fluid that is used to cool the cable. The use of air instead of liquid nitrogen eliminates the potential hazard of oxygen ...

2012-12-12T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Condition Assessment Techniques for Laminar Dielectric Transmission Cable Systems  

Science Conference Proceedings (OSTI)

As aging and higher circuit loadings lead to increased failures of pipe-type cable systems, utilities need effective techniques for assessing the key components of these systems. Many off-line and on-line diagnostic and assessment techniques are in use to inspect the condition of laminar dielectric cable systems. However, because of the high labor costs and required circuit outage of off-line testing, much of the current research and development focuses on methods of on-line monitoring. A number of mecha...

2010-12-23T23:59:59.000Z

262

Corrosion of Buried Steel Pipes Used With Transmission Pipe-Type Cable Systems  

Science Conference Proceedings (OSTI)

Although pipe-type underground transmission cables were designed with a life expectancy of 40 years, many of these cables have reached this threshold and are still performing satisfactorily. The buried steel pipes that surround the cables are protected by coatings and cathodic-protection systems. These protective systems need to be routinely inspected and maintained in order to extend their own life expectancy and thereby protect the cables within the steel pipes. This report provides research results an...

2010-12-23T23:59:59.000Z

263

Evaluation of SSC Cable Produced for the Model Dipole Program during 1989 and through February, 1990  

E-Print Network (OSTI)

SSC Laboratory M. Garber, Brookhaven Nationai Laboratory R.of SSC cable is done a: Brookhaven National Laboratory in a

Christopherson, D.

2011-01-01T23:59:59.000Z

264

Serial Powering of Silicon Sensors  

E-Print Network (OSTI)

Serial powering is a technique to provide power to a number of serially chained detector modules. It is an alternative option to independent powering that is particularly attractive when the number of modules is high, as in largescale silicon tracking detectors for particle physics. It uses a single power cable and a constant current source. On each module power is derived using local shunt regulators. Design aspects of local shunt regulators and system aspects of serial powering will be discussed. Test results and measurements obtained with a silicon strip supermodule will be presented. Specifications of radiation-hard custom serial powering circuitry will be discussed.

Villani, E G; Tyndel, M; Apsimon, R

2007-01-01T23:59:59.000Z

265

Cable System Technology Review of XLPE EHV Cables: 220 kV to 500 kV  

Science Conference Proceedings (OSTI)

Utilities in North America are now evaluating the first long-length circuits of extruded cross-linked polyethylene (XLPE) cable systems containing many joints at rated voltages 220 kV, 230 kV, and 345 kV. Of interest is whether the design, manufacture, and installation of XLPE extra-high-voltage (EHV) cable systems has been sufficiently demonstrated to satisfy utilities that it can provide reliable service for their particular applications. This report reviews the worldwide state of the art, gives method...

2002-12-16T23:59:59.000Z

266

A Superconducting transformer system for high current cable testing  

Science Conference Proceedings (OSTI)

This article describes the development of a direct-current (dc) superconducting transformer system for the high current test of superconducting cables. The transformer consists of a core-free 10 464 turn primary solenoid which is enclosed by a 6.5 turn secondary. The transformer is designed to deliver a 50 kA dc secondary current at a dc primary current of about 50 A. The secondary current is measured inductively using two toroidal-wound Rogowski coils. The Rogowski coil signal is digitally integrated, resulting in a voltage signal that is proportional to the secondary current. This voltage signal is used to control the secondary current using a feedback loop which automatically compensates for resistive losses in the splices to the superconducting cable samples that are connected to the secondary. The system has been commissioned up to 28 kA secondary current. The reproducibility in the secondary current measurement is better than 0.05% for the relevant current range up to 25 kA. The drift in the secondary current, which results from drift in the digital integrator, is estimated to be below 0.5 A/min. The system's performance is further demonstrated through a voltage-current measurement on a superconducting cable sample at 11 T background magnetic field. The superconducting transformer system enables fast, high resolution, economic, and safe tests of the critical current of superconducting cable samples.

Godeke, A.; Dietderich, D. R.; Joseph, J. M.; Lizarazo, J.; Prestemon, S. O.; Miller, G.; Weijers, H. W.

2010-02-15T23:59:59.000Z

267

Pierre Auger Observatory Surface Detector Cabling Plan  

E-Print Network (OSTI)

ELECTRONICS METAL BOX Motherboard (PCC/CdF) MBB1 2 push-in terminals (tech name?) - 24V power in MBJ8 HE10 a comprehensive list of connectors on boards, terminals, feedthroughs, etc; that is, anything which constitutes used here. Pinouts for the sockets and terminals must also be collected. Connector part numbers, hole

268

Static Analysis of the Lumped Mass Cable Model Using a Shooting Algorithm  

SciTech Connect

This paper focuses on a method to solve the static configuration for a lumped mass cable system. The method demonstrated here is intended to be used prior to performing a dynamics simulation of the cable. Conventional static analysis approaches resort to dynamics relaxation methods or root-finding algorithms (such as the Newton-Raphson method) to find the equilibrium profile. The alternative method demonstrated here is general enough for most cable configurations (slack or taut) and ranges of cable elasticity. The forces acting on the cable are attributable to elasticity, weight, buoyancy, and hydrodynamics. For the three-dimensional problem, the initial cable profile is obtained by solving three equations, regardless of the cable discretization resolution. This analysis discusses regions and circumstances under which failures in the method are encountered.

Masciola, M. D.; Nahon, M.; Driscoll, F. R.

2012-03-01T23:59:59.000Z

269

Characteristics of Pipe-Type Cable Fluids and Development of Risk-Based Cleanup Goals: Interim Report  

Science Conference Proceedings (OSTI)

Underground transmission cables transmit electricity in many urban areas of the United States. In high-pressure fluid-filled (HPFF) pipe-type cables, the cable interior is filled with insulating fluid. Occasionally, cables can leak, and the fluid can contaminate surrounding soil. This report presents interim results of a project to characterize the physical and chemical properties of HPFF cable fluids, evaluate their fate and transport in the environment, and develop soil cleanup levels for the fluids th...

2002-03-06T23:59:59.000Z

270

EPRI Increased Power Flow Guidebook -- 2011  

Science Conference Proceedings (OSTI)

The EPRI Increased Power Flow (IPF) Guidebook is a state-of-the-art and best-practices reference and guidebook on increasing the power flow capacities of existing overhead transmission lines, underground cables, power transformers, and substation equipment without compromising safety and reliability. The Guidebook discusses power system concerns and limiting conditions to increasing capacity, reviews available technology options and methods, illustrates the alternatives with case studies, and analyzes th...

2011-12-12T23:59:59.000Z

271

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

R. Gupta, M. Anerella, J. Cozzolino, R. Gupta, M. Anerella, J. Cozzolino, W. Sampson, Peter Wanderer, BNL, NY USA A Zeller, FRIB, MI, USA Superconducting Magnet Division HTS Quad for FRIB Ramesh Gupta , ..., BNL, Al Zeller, FRIB Slide No. 2 ASC2012 October 10, 2012 Outline * Motivation for HTS magnets in FRIB - HTS is now the baseline design for some critical magnets * First Generation Design - 30 K operation * Second Generation Design - 50 K operation and higher gradient * Summary and future outlook Superconducting Magnet Division HTS Quad for FRIB Ramesh Gupta , ..., BNL, Al Zeller, FRIB Slide No. 3 ASC2012 October 10, 2012 FRIB * Facility for Rare Isotope Beams (FRIB) will create rare isotopes

272

Society of Cable Telecommunications Engineers | Open Energy Information  

Open Energy Info (EERE)

Cable Telecommunications Engineers Cable Telecommunications Engineers Jump to: navigation, search Logo: SCTE Name SCTE Address 140 Philips Rd Place Exton, Pennsylvania Zip 19341 Region Northeast - NY NJ CT PA Area Number of employees 11-50 Year founded 1969 Phone number 610-363-6888 Website http://www.scte.org/ Coordinates 40.0634614°, -75.6439227° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.0634614,"lon":-75.6439227,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

273

Energy harvesting using vortex-induced vibrations of tensioned cables  

E-Print Network (OSTI)

The development of energy harvesting systems based on fluid/structure interactions is part of the global search for innovative tools to produce renewable energy. In this paper, the possibility to harvest energy from a flow using vortex-induced vibrations (VIV) of a tensioned flexible cable is analyzed. The fluid loading on the vibrating solid and resulting dynamics are computed using an appropriate wake-oscillator model, allowing one to perform a systematic parametric study of the efficiency. The generic case of an elastically-mounted rigid cylinder is first investigated, before considering an infinite cable with two different types of energy harvesting : a uniformly spanwise distributed harvesting and then a periodic distribution of discrete harvesting devices. The maximum harvesting efficiency is of the same order for each configuration and is always reached when the solid body and its wake are in a frequency lock-in state.

Grouthier, Clement; de Langre, Emmanuel

2012-01-01T23:59:59.000Z

274

Method and device for tensile testing of cable bundles  

DOE Patents (OSTI)

A standard tensile test device is improved to accurately measure the mechanical properties of stranded cables, ropes, and other composite structures wherein a witness is attached to the top and bottom mounting blocks holding the cable under test. The witness is comprised of two parts: a top and a bottom rod of similar diameter with the bottom rod having a smaller diameter stem on its upper end and the top rod having a hollow opening in its lower end into which the stem fits forming a witness joint. A small gap is present between the top rod and the larger diameter portion of the bottom rod. A standard extensometer is attached to the top and bottom rods of the witness spanning this small witness gap. When a force is applied to separate the mounting blocks, the gap in the witness expands the same length that the entire test specimen is stretched.

Robertson, Lawrence M; Ardelean, Emil V; Goodding, James C; Babuska, Vit

2012-10-16T23:59:59.000Z

275

Distributed measurement of conductor temperatures in mine trailing cables using fiber-optic technology  

Science Conference Proceedings (OSTI)

Mine trailing cables operated above safe thermal limits can cause premature insulation failure, increasing electrocution and fire hazards. Previous US Bureau of Mines Pittsburgh Research Center research showed that, under static test conditions, electrical current levels permitted under present regulations may not limit cable temperatures to less than the 90 C rating of reeled trailing cable. Continuing research under the National Institute for Occupational Safety and Health (NIOSH) addresses thermal characteristics of reeled trailing cable under dynamic test conditions more representative of field conditions, where operators constantly reel in and pay out cable. This research is in support of efforts by industry associations and the Mine Safety and Health Administration to establish safety guidelines for cyclically rated reeled machines. This paper describes a unique approach to measuring temperatures within reeled cable under dynamic test conditions. Fiber-optic sensors embedded within the metallic conductors measure temperatures at 1-m intervals along the entire length of cable. Temperature measurements are reported to be accurate to within {+-}1 C. The test setup requires access to only one end of the trailing cable, allowing researchers to freely reel in and pay out cable while temperature measurements are made, simulating field conditions. Manufacture of a fiber-optic-embedded trailing cable is described, along with initial test results that indicate the fiber-optic approach is viable.

Dubaniewicz, T.H. Jr.; Kovalchik, P.G.; Scott, L.W. [National Inst. for Occupational Safety and Health, Pittsburgh, PA (United States). Research Lab.] [National Inst. for Occupational Safety and Health, Pittsburgh, PA (United States). Research Lab.; Fuller, M.A. [AmerCable, Sewickley, PA (United States)] [AmerCable, Sewickley, PA (United States)

1998-03-01T23:59:59.000Z

276

Wire rope superconducting cable for diurnal load leveling SMES  

DOE Green Energy (OSTI)

The design of a wire rope cable for a superconducting magnetic energy storage (SMES) unit is discussed. The superconducting wires in the rope permit the passage of large currents in the relatively small conductors of the windings and hence cause large electromagnetic forces to act on the rope. The diameter of the rope, from a strength point of view, can be considerably reduced by supporting the rope at various points along its length.

Costello, G.A.

1980-01-01T23:59:59.000Z

277

Use of Hysol US0009 polyurethane encapsulant in battery cables  

DOE Green Energy (OSTI)

This report describes the evaluation of Hysol US0009 polyurethane as an encapsulant for the battery cable used on the MC1605B. The Hysol resin was selected for the application because it was reacted with a non-carcinogenic curing agent and because it exhibited superior mechanical, electrical, and hydrolytic properties over a wide temperature range. The Hysol encapsulant was evaluated to determine if it was superior to the EN-7 elastomer as a sealant against electrolyte migration to the interior of the cable. Environmental tests reported here showed the Hysol was marginal when no preseal was employed but was 100 percent effective when a bird-cage seal was used inside the EMR hardware. The EN-7 encapsulant, on the other hand, was effective only when seals were employed both inside the EMR hardware and at the lug terminations. Without the two preseals, the EN-7 compound was always unsatisfactory. Twenty development battery cables fabricated with Hysol under production operations were tested after alternate immersion in battery electrolyte and after exposures to temperature shock and the MIL-STD 202 environment. Presealed cables successfully survived these exposures and retained their initial DC resistance, insulation resistance, and high potential properties with only minor changes. The environmental tests conducted with these assemblies probably represented five or more years of in-field service. Comparative peel tests demonstrated that the Hysol/neoprene insert bond was twice (5.2 versus 2.8 kg/cm) that of the EN-7 polyurethane. Hysol US0009 has a potential for encapsulation of other WR components and assemblies in which the EN-7 resin has exhibited thermal shortcomings. 7 figures, 10 tables.

Voida, G.

1977-04-01T23:59:59.000Z

278

Corrosion Effects and Prevention in Pipe-Type Cable Systems  

Science Conference Proceedings (OSTI)

This report describes the initial stages of a project on detecting and monitoring coating-system flaw development in pipe-type cable through novel methods of electrochemistry. One key preliminary accomplishment was the development of a way to create flaws of known size and location in sample pipes to make it possible to evaluate new techniques to detect disbonded coatings in the field.BackgroundDisbonded coating systems on ...

2012-12-12T23:59:59.000Z

279

Method and apparatus for making multistrand superconducting cable  

DOE Patents (OSTI)

Improved multistrand Rutherford-type superconducting cable (42) is produced in a flattened form with two layers of helically wound strands (33) and in which the strands are alternately twisted about their lengths equally and in opposite directions to provide a flat cable with improved stability. In particular, the cable (42) is made by guiding multifilament wire strands (33) from spools (32) on a rotating turret (11) to a fixed tapered forming mandrel (22) where they are wound diagonally around the mandrel and then rolled into a flattened shape. The spools (32) are located around the periphery of the turret and are rotatable about axes in a plane parallel to the turret (11) to unroll the wire. Sprocket assemblies (48 and 49) are driven by drive chains (68 and 76) to rotate alternate spools (32) equally and in opposite directions relative to the forming mandrel (22) so that the wire strands (33) are twisted prior to being wound on the mandrel (22). The rate of rotation of the spools (32) in one direction is different than the rate of rotation of the spools (32) in the opposite direction to compensate for the rate of rotation of the turret (11) so that all strands (33) have the same degree of twist about their lengths.

Royet, John M. (Oakland, CA); Armer, Rollin A. (Orinda, CA)

1990-01-01T23:59:59.000Z

280

Beacon Power-Flywheel Energy Storage System Case Study  

Science Conference Proceedings (OSTI)

As the telecommunications industry grows and competition increases, providers of cable, telephone, and other products are looking for more equipment reliability and cost-effectiveness to distinguish themselves. Reliability for telecommunication and cable equipment has traditionally been provided through the use of lead-acid batteries. However, because these batteries have disadvantages, telecommunications operators are looking for alternative power quality and reliability solutions for their systems. The...

1999-11-11T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Nuclear Energy Plant Optimization (NEPO) final report on aging and condition monitoring of low-voltage cable materials.  

SciTech Connect

This report summarizes results generated on a 5-year cable-aging program that constituted part of the Nuclear Energy Plant Optimization (NEPO) program, an effort cosponsored by the U. S. Department of Energy (DOE) and the Electric Power Research Institute (EPRI). The NEPO cable-aging effort concentrated on two important issues involving the development of better lifetime prediction methods as well as the development and testing of novel cable condition-monitoring (CM) techniques. To address improved life prediction methods, we first describe the use of time-temperature superposition principles, indicating how this approach improves the testing of the Arrhenius model by utilizing all of the experimentally generated data instead of a few selected and processed data points. Although reasonable superposition is often found, we show several cases where non-superposition is evident, a situation that violates the constant acceleration assumption normally used in accelerated aging studies. Long-term aging results over extended temperature ranges allow us to show that curvature in Arrhenius plots for elongation is a common occurrence. In all cases the curvature results in a lowering of the Arrhenius activation energy at lower temperatures implying that typical extrapolation of high temperature results over-estimates material lifetimes. The long-term results also allow us to test the significance of extrapolating through the crystalline melting point of semi-crystalline materials. By utilizing ultrasensitive oxygen consumption (UOC) measurements, we show that it is possible to probe the low temperature extrapolation region normally inaccessible to conventional accelerated aging studies. This allows the quantitative testing of the often-used Arrhenius extrapolation assumption. Such testing indicates that many materials again show evidence of ''downward'' curvature (E{sub a} values drop as the aging temperature is lowered) consistent with the limited elongation results and many literature results. It is also shown how the UOC approach allows the probing of temperatures that cross through the crystalline melting point region of semi-crystalline materials such as XLPO and EPR cable insulations. New results on combined environment aging of neoprene and hypalon cable jacketing materials are presented and offer additional evidence in support of our time-temperature-dose rate (t-T-DR) superposition approach that had been used successfully in the past for such situations.

Assink, Roger Alan; Gillen, Kenneth Todd; Bernstein, Robert

2005-11-01T23:59:59.000Z

282

GRR/Section 7-HI-a - Geothermal and Cable System Development Permit | Open  

Open Energy Info (EERE)

GRR/Section 7-HI-a - Geothermal and Cable System Development Permit GRR/Section 7-HI-a - Geothermal and Cable System Development Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 7-HI-a - Geothermal and Cable System Development Permit 07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf Click to View Fullscreen Contact Agencies Hawaii Department of Land and Natural Resources Engineering Division Regulations & Policies Hawaii Revised Statute 196D Hawaii Administrative Rules 13-185 Hawaii Revised Statute 205-3.1 Revised Statute 205-5. Triggers None specified Click "Edit With Form" above to add content 07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf 07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf Error creating thumbnail: Page number not in range.

283

Methods to Improve Quality in Installation of Transmission Cable Accessories -- 2012 Interim Results  

Science Conference Proceedings (OSTI)

Cable accessories are critical components of underground transmission cable systems. This report summarizes types of transmission class joints and terminations and discusses root causes of accessory failures. The failures can be a result of many phases, from accessory design, application, installation, and operation to end of life. Appropriate design, application, installation, qualification, inspection, maintenance, and operation of cable accessories are of considerable importance for a reliable ...

2012-11-16T23:59:59.000Z

284

Experimental Verification of Thermo-Mechanical Models for XLPE Cable in Pipes and Ducts  

Science Conference Proceedings (OSTI)

In 2002 EPRI began investigations of the thermo-mechanical (T-M) behavior of transmission-class cable systems with extruded insulation in duct-manhole and pipe systems and began work on a design guide. The project consisted primarily of two efforts: experimental measurement of cable parameters and development of a mathematical simulation of the thermal and mechanical behavior of transmission-class cable with extruded cross-linked polyethylene (XLPE) insulation when installed in ducts and pipes. ...

2012-12-20T23:59:59.000Z

285

A Control Strategy of a VSC HVDC System for Power System Enhancement  

Science Conference Proceedings (OSTI)

Voltage Source Converter (VSC) based HVDC is the most recent HVDC technology with extruded DC cables in small and medium power transmission. VSC-HVDC converters include Insulated Gate Bipolar Transistors (IGBT'S) and operated with high frequency Pulse ...

Sonali Dasgupta; Gayatri Agnihotri

2009-12-01T23:59:59.000Z

286

Plant Support Engineering: Failure Mechanism Assessment of Medium-Voltage Ethylene Propylene Rubber Cables - Revision 1  

Science Conference Proceedings (OSTI)

This report presents the results of research that assessed failed ethylene propylene rubber (EPR) medium-voltage (MV) cables to determine the failure mechanism. This information will be used to identify appropriate electrical tests that can be performed on in-service cable. Assessed were two 34-year-old cables manufactured by Okonite with black EPR insulation and a 25-year-old Anaconda UniShield cable with pink EPR. All three had failed and had experienced long-term wetting during service. This report is...

2009-05-28T23:59:59.000Z

287

Guide for Operation & Maintenance of Paper-Insulated Transmission Cables: Part 1  

Science Conference Proceedings (OSTI)

U.S. utilities have more than $20 billion invested in underground transmission cables, the majority of which employ fluid-impregnated paper insulation. Due to the advancing age of these cables and the rapidly emerging competitive utility business climate, it is all the more important to protect this investment through proper operations and maintenance (O&M). Part 1 of this guide describes the various cable systems, O&M through noninvasive testing of the dielectric system, and invasive tests on the cable'...

2000-12-13T23:59:59.000Z

288

Complete Fiber/Copper Cable Solution for Long-Term Temperature...  

Open Energy Info (EERE)

Draka will develop the required advances in buffer tubing, cladding, wire insulation materials and cable packaging as well as coordinate activities of other...

289

Assessment of Paper-Insulated Lead-Covered Cable Condition: Electrical, Chemical, and Metallurgical Condition  

Science Conference Proceedings (OSTI)

This report summarizes the investigation of electrical, chemical, and metallurgical tests used to evaluate the condition of paper-insulated lead-covered (PILC) medium-voltage cables.

2003-02-25T23:59:59.000Z

290

HoustonChronicle.com Page 1 of 2 http://www.chron.com/cs/CDA/printstory.hts/prn/texas/880944 4/23/2001  

E-Print Network (OSTI)

HoustonChronicle.com Page 1 of 2 http://www.chron.com/cs/CDA/printstory.hts/prn/texas/880944 4 in Richardson, Texas (c) 2001 Business Wire. News/Assignment Editors & High-Tech Writers REMINDER...for Tuesday WHEN: Tuesday, April 17, 1:45 p.m. CST WHERE: Radisson Hotel Dallas North at Richardson, Texas 1981

Chiao, Jung-Chih

291

Extruded Dielectrics for Transmission Cables: Evaluation of Aging Models  

Science Conference Proceedings (OSTI)

One of the tasks proposed at the 2002 EPRI workshop on the aging of extruded transmission cables was to evaluate three recently developed theoretical aging models of electrical insulation. The three models were (1) the Thermodynamic Model of Aging of Extruded Insulation by J.P. Crine; (2) the Space Charge Aging Model by L.A. Dissado, G. Mazzanti, and G.C. Montanari (DMM); and (3) the Electromechanical Aging Model by T.J. Lewis. These three models are considered to be significant improvements over the emp...

2003-12-31T23:59:59.000Z

292

Production process for advanced space satellite system cables/interconnects.  

SciTech Connect

This production process was generated for the satellite system program cables/interconnects group, which in essences had no well defined production process. The driver for the development of a formalized process was based on the set backs, problem areas, challenges, and need improvements faced from within the program at Sandia National Laboratories. In addition, the formal production process was developed from the Master's program of Engineering Management for New Mexico Institute of Mining and Technology in Socorro New Mexico and submitted as a thesis to meet the institute's graduating requirements.

Mendoza, Luis A.

2007-12-01T23:59:59.000Z

293

High-Pressure Fluid-Filled Cable Condition Assessment Through Electrical Impulse Testing of PSE&G 230-kV Service-Aged Cable  

Science Conference Proceedings (OSTI)

This report describes electrical and mechanical testing of a service-aged 230-kV high-pressure fluid-filled (HPFF) cable sample that was removed from a Public Service Electric & Gas (PSE&G) underground transmission line.

2008-11-26T23:59:59.000Z

294

Valuable bridges : cable-stayed bridges and value engineering in American civil engineering culture, 1969-1979  

E-Print Network (OSTI)

A history and theory of cable-stayed bridges in the context of a cultural discourse on civil construction projects' value, this thesis studies the significance of cable-stayed bridge designs to 'value engineering' objectives ...

Samuels, Fallon M. (Fallon Michele)

2007-01-01T23:59:59.000Z

295

Termination for superconducting power transmission systems  

DOE Patents (OSTI)

This patent relates to a cold, electrical gradient, terminal section for a superconducting cable for alternating current power transmission. A cold electrical gradient section filled with a gaseous coolant acting as an insulator is provided in series with a separate thermal gradient section. (auth)

Forsyth, E.B.; Jensen, J.E.

1975-08-26T23:59:59.000Z

296

An Internal Coaxial Cable Electrical Connector For Use In Downhole Tools  

DOE Patents (OSTI)

A seal for a coaxial cable electrical connector more specifically an internal seal for a coaxial cable connector placed within a coaxial cable and its constituent components. A coaxial cable connector is in electrical communcation with an inductive transformer and a coaxial cable. The connector is in electrical communication with the outer housing of the inductive transformer. A generally coaxial center conductor, a portion of which could be the coil in the inductive transformer, passes through the connector, is electrically insulated from the connector, and is in electrical communication with the conductive core of the coaxial cable. The electrically insulating material also doubles as a seal to safegaurd against penetration of fluid, thus protecting against shorting out of the electrical connection. The seal is a multi-component seal, which is pre-compressed to a desired pressure rating. The coaxial cable and inductive transformer are disposed within downhole tools to transmit electrical signals between downhole tools within a drill string. The internal coaxial cable connector and its attendant seal can be used in a plurality of downhole tools, such as sections of pipe in a drill string, drill collars, heavy weight drill pipe, and jars.

Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Dahlgren, Scott (Provo, UT); Fox, Joe (Spanish Fork, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT)

2005-09-20T23:59:59.000Z

297

Underground Transmission Cable System Construction and Installation Practices Manual 2012 Update  

Science Conference Proceedings (OSTI)

A reliable underground transmission line depends on acceptable cable system manufacturing, design, construction, installation, operation, and maintenance. Within implementation, construction and installation remain the most expensive processes. Recent advances in underground transmission have led to more demand for best practices and innovative ways to reduce construction and installation costs in a cable project.Background ...

2012-12-12T23:59:59.000Z

298

Fighting City Hall: Entry Deterrence and Technology Upgrades in Cable TV Markets  

Science Conference Proceedings (OSTI)

This article investigates how private firms respond to potential entry from public firms. This paper uses a data set of over 3,000 U.S. cable TV systems to present evidence consistent with entry deterrence. Incumbent cable TV firms upgrade faster when ... Keywords: entry, entry deterrence, public--private interaction, technology

Robert C. Seamans

2012-03-01T23:59:59.000Z

299

Real time prelocalisation of electrical defaults on high voltage underground cable (single-phase case)  

Science Conference Proceedings (OSTI)

This paper proposes an assistance tool to the prelocalisation of the insulation defaults affecting electrical single-phase cables by using voltage and current measurements available in source substation. An equivalent network modeling defaults to the ... Keywords: default distance, distributed parameters, insulation default, prelocalisation, sheath, underground cable

Thameur Aloui; Fathi Ben Amar; Nizar Derbel; Hsan Hadj Abdallah

2010-05-01T23:59:59.000Z

300

A Cabled Acoustic Telemetry System for Detecting and Tracking Juvenile Salmon: Part 2. Three-Dimensional Tracking and Passage Outcomes  

SciTech Connect

In Part 1 of this paper [1], we presented the engineering design and instrumentation of the Juvenile Salmon Acoustic Telemetry System (JSATS) cabled system, a nonproprietary technology developed by the U.S. Army Corps of Engineers, Portland District, to meet the needs for monitoring the survival of juvenile salmonids through the 31 dams in the Federal Columbia River Power System. Here in Part 2, we describe how the JSATS cabled system was employed as a reference sensor network for detecting and tracking juvenile salmon. Time-of-arrival data for valid detections on four hydrophones were used to solve for the three-dimensional (3D) position of fish surgically implanted with JSATS acoustic transmitters. Validation tests demonstrated high accuracy of 3D tracking up to 100 m from the John Day Dam spillway. The along-dam component, used for assigning the route of fish passage, had the highest accuracy; the median errors ranged from 0.06 to 0.22 m, and root mean square errors ranged from 0.05 to 0.56 m at distances up to 100 m. For the case study at John Day Dam during 2008, the range for 3D tracking was more than 100 m upstream of the dam face where hydrophones were deployed, and detection and tracking probabilities of fish tagged with JSATS acoustic transmitters were higher than 98%. JSATS cabled systems have been successfully deployed on several major dams to acquire information for salmon protection and for development of more fish-friendly hydroelectric facilities.

Deng, Zhiqun; Weiland, Mark A.; Fu, Tao; Seim, Thomas A.; Lamarche, Brian L.; Choi, Eric Y.; Carlson, Thomas J.; Eppard, Matthew B.

2011-05-26T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Initial Acceptance Criteria Concepts and Data for Assessing Longevity of Low-Voltage Cable Insulations and Jackets  

Science Conference Proceedings (OSTI)

The cables installed in nuclear plants have long lives in most applications. However, the service conditions for some applications can cause the jackets and insulations of cables to age more rapidly than normal. It is desirable to have acceptance criteria for continued service of those cables experiencing significant aging. This report establishes a basis for acceptance criteria, provides a method for estimating remaining cable life, and provides aging profiles under various thermal and radiation conditi...

2005-03-28T23:59:59.000Z

302

Performance Evaluation of K-DEMO Cable-in-conduit Conductors Using the Florida Electro-Mechanical Cable Model  

Science Conference Proceedings (OSTI)

The United States ITER Project Office (USIPO) is responsible for design of the Toroidal Field (TF) insert coil, which will allow validation of the performance of significant lengths of the conductors to be used in the full scale TF coils in relevant conditions of field, current density and mechanical strain. The Japan Atomic Energy Agency (JAEA) will build the TF insert which will be tested at the Central Solenoid Model Coil (CSMC) Test facility at JAEA, Naka, Japan. Three dimensional mathematical model of TF Insert was created based on the initial design geometry data, and included the following features: orthotropic material properties of superconductor material and insulation; external magnetic field from CSMC, temperature dependent properties of the materials; pre-compression and plastic deformation in lap joint. Major geometrical characteristics of the design were preserved including cable jacket and insulation shape, mandrel outline, and support clamps and spacers. The model is capable of performing coupled structural, thermal, and electromagnetic analysis using ANSYS. Numerical simulations were performed for room temperature conditions; cool down to 4K, and the operating regime with 68kA current at 11.8 Tesla background field. Numerical simulations led to the final design of the coil producing the required strain levels on the cable, while simultaneously satisfying the ITER magnet structural design criteria.

Zhai, Yuhu

2013-07-16T23:59:59.000Z

303

A Micro-power EEG acquisition SoC with integrated seizure detection processor for continuous patient monitoring  

E-Print Network (OSTI)

Continuous on-scalp EEG monitoring provides a non-invasive means to detect the onset of seizures in epilepsy patients, but cables from the scalp pose a severe strangulation hazard during convulsions. Since the power of ...

Verma, Naveen

304

Thermo-Mechanical Bending Testing and Analysis for Public Service Electric and Gas Company Field-Aged Cables  

Science Conference Proceedings (OSTI)

High-pressure fluid-filled, pipe-type cables have been in operation since the mid-1930s, and they are acknowledged to be very reliable. However, some 230-kV and 345-kV cables, primarily those installed in the 1960s and 1970s, have experienced a failure mechanism known as thermo-mechanical bending (TMB). Cable expansion with an increase in loading causes the cables to form a series of bends. The cables tend to straighten as they cool when loads are reduced. In most cases, this movement can occur daily for...

2009-10-28T23:59:59.000Z

305

Utility Experience of In-Pipe Thermo-Mechanical Bending (TMB) Events on Pipe-Type Cables  

Science Conference Proceedings (OSTI)

High-pressure fluid-filled, pipe-type cables are quite reliable. However, some 230-kV and 345-kV cables, primarily those installed in the 1960s and 1970s, have experienced a failure mechanism known as thermomechanical bending (TMB). Cable expansion with an increase in loading causes the cables to form a series of bends. The cables tend to straighten as they cool when loads are reduced. In most cases, this movement can occur daily for many decades without incident. In some cases, however, this TMB motion ...

2008-12-11T23:59:59.000Z

306

CABLE AOORIs*. HICRONIZER. MOORLblOWN. NEW ,SRIEY  

Office of Legacy Management (LM)

NEW ALBANY ROAD . MOORESTOWN . NEW ]ERSEY NEW ALBANY ROAD . MOORESTOWN . NEW ]ERSEY CABLE AOORIs*. HICRONIZER. MOORLblOWN. NEW ,SRIEY be returned further obliga- may desire any patent protection, provi#ed; however, that the costa in connectSo& with the pregaration;~~fillrig nnd prosecution of the same shall be entirely: at ?SG,~~e~enS.e ,of our..company. This provision, how- ever, ls.' subJect:to eny.~prlor'arra~cmont between your Institu- tion and the government with respect to inventions and p?j,tents. ,.: 3,ri 'I :: .:v:ri :!:!p, +lo.~nl.~~! ( '.'I! &f :, > ,>,' :'It'r*i&: sltibr~!the understandfng that your Instttution will ca,rry such insurance as you'may deem ndvi~able~ln aonoec- tion with this m ill or its use ~lhile :kt the UnivsF@#b v' "t -' . ' - IN,TERNATI.ONAL PULVERIZING c0RP0RAi.1~

307

Compact multiwavelength transmitter module for multimode fiber optic ribbon cable  

DOE Patents (OSTI)

A compact multiwavelength transmitter module for multimode fiber optic ribbon cable, which couples light from an M.times.N array of emitters onto N fibers, where the M wavelength may be distributed across two or more vertical-cavity surface-emitting laser (VCSEL) chips, and combining emitters and multiplexer into a compact package that is compatible with placement on a printed circuit board. A key feature is bringing together two emitter arrays fabricated on different substrates--each array designed for a different wavelength--into close physical proximity. Another key feature is to compactly and efficiently combine the light from two or more clusters of optical emitters, each in a different wavelength band, into a fiber ribbon.

Deri, Robert J. (Pleasanton, CA); Pocha, Michael D. (Livermore, CA); Larson, Michael C. (Goleta, CA); Garrett, Henry E. (Livermore, CA)

2002-01-01T23:59:59.000Z

308

Plant Support Engineering: Failure Mechanism Assessment of Medium Voltage Ethylene Propylene Rubber Cables  

Science Conference Proceedings (OSTI)

This report presents the results of research that assessed failed ethylene propylene rubber (EPR) medium-voltage (MV) cables to determine the failure mechanism. This information will be used to identify appropriate electrical tests that can be performed on in-service cable. Assessed were a 34-year-old cable manufactured by Okonite with black EPR insulation and a 20-year-old Anaconda Uni-Shieldcable with pink EPR. Both had failed, and both had experienced long-term wetting during service.

2007-08-20T23:59:59.000Z

309

Superconducting Power Equipment: Technology Watch 2012  

Science Conference Proceedings (OSTI)

The demand to transport large quantities of renewable energy from wind, solar, or hydro projects in remote locations to population load centers is increasing worldwide. Improved efficiency and greater power capacity that superconducting cables provide in this application continue to attract interest. In the United States, the Tres Amigas interconnect project, which reportedly will eventually use dc superconductors, is, in part, motivated by the need to transport wind power from west to east. ...

2012-12-20T23:59:59.000Z

310

Superconducting materials for large scale applications  

E-Print Network (OSTI)

commercial sale of HTS power equipment based on first generation HTS wire has recently occurred for dynamic synchronous condensers

Scanlan, Ronald M.; Malozemoff, Alexis P.; Larbalestier, David C.

2004-01-01T23:59:59.000Z

311

Power quality analysis of wind generator connected to the weak grid during low wind speed  

Science Conference Proceedings (OSTI)

Power quality analysis based on measurements performed on wind generator during low wind speed is presented in the paper. Wind generator is connected via 10 kV cable to the distribution network, where grid is weak with low value of short-circuit power. ... Keywords: distribution network, harmonics, power quality, wind speed, wind turbine

Aleksandar Nikolic; Branka Kostic; Maja Markovic; Sasa Minic; Srdjan Milosavljevic

2011-07-01T23:59:59.000Z

312

Design, Construction, and Test Results for Three Different Fiber Optic Tow Cables  

Science Conference Proceedings (OSTI)

The design, manufacture, and testing of three armored fiber optic tow cables is discussed. The motivation for these developments was the technical need to have low-loss high-bandwidth transmission lines, that function with negligible crosstalk and absence ...

E. Althouse

2006-09-01T23:59:59.000Z

313

WHOI SDSL Data-Link Project Ethernet Telemetry through Sea Cables  

Science Conference Proceedings (OSTI)

A data telemetry technique for communicating over standard oceanographic sea cables that achieves a nearly 100-fold increase in bandwidth as compared to traditional systems has recently been developed and successfully used at sea onboard two R/V ...

Marshall Swartz; Daniel J. Torres; Steve Liberatore; Robert Millard

314

Monitoring Volume Transport through Measurement of Cable Voltage across the Korea Strait  

Science Conference Proceedings (OSTI)

Voltage induced by the Tsushima Current on an abandoned submarine telephone cable between Pusan, Korea, and Hamada, Japan, has been measured since March 1998 in order to monitor the volume transport through the Korea Strait. Voltage has a good ...

Kuh Kim; Sang Jin Lyu; Young-Gyu Kim; Byung Ho Choi; Keisuke Taira; Henry T. Perkins; William J. Teague; Jeffrey W. Book

2004-04-01T23:59:59.000Z

315

12/16/03 1/21/04 Cable Management and Shielding  

Science Conference Proceedings (OSTI)

... 12/16/03 1/21/04 Cable Management and Shielding. ... The aperture plug installed in the shield wall and the 1 inch insert on the outer optical bench. ...

316

Broadband access over cable for next-generation services: a distributed switch architecture  

Science Conference Proceedings (OSTI)

The hybrid fiber coax architecture deployed by the cable service providers has been successful in capturing a substantial piece of the residential broadband access market. In the United States over five million homes connect to the Internet using DOCSIS ...

S. Dravida; D. Gupta; S. Nanda; K. Rege; J. Strombosky; M. Tandon

2002-08-01T23:59:59.000Z

317

A Functional Interaction of the C-Abl and Heat Shock Response Pathways in  

NLE Websites -- All DOE Office Websites (Extended Search)

Functional Interaction of the C-Abl and Heat Shock Response Pathways in Functional Interaction of the C-Abl and Heat Shock Response Pathways in Radio-Adaptive Response Hang Su & Zhi-Min Yuan University of Texas Health Science Center at San Antonio Abstract A functional interaction of the c-Abl and heat shock response pathways in radio-adaptive response Hang Su & Zhi-Min Yuan. Department of Radiation Oncology, UTHSCSA The radio-adaptive response, i.e. a low dose of radiation can protect cells and organisms from the effects of a subsequent higher dose, is a phenomenon that has been widely recognized. However, mechanisms underlying such radiation hormesis remain largely unclear. Our preliminary studies have uncovered a crucial role for the c-Abl tyrosine kinase as evidenced by that c-Abl-deficient cells exhibited a compromised

318

EPRI Dissolved Gas Analysis Guide for High-Voltage Cables and Transformers  

Science Conference Proceedings (OSTI)

Dissolved gas analysis (DGA) is deemed to be the most economical and reliable diagnostic test for both cables and transformers, and it is finding widespread application worldwide. The general subject of DGA has continued to receive considerable attention for several decades. While there is commonality between cable and transformer DGA and the oil-paper insulating system, there are marked differences with respect to DGA due to the differing designs, materials, and operating conditions associated with ...

2012-12-20T23:59:59.000Z

319

Low-Voltage Environmentally-Qualified Cable License Renewal Industry Report -- Revision 1  

Science Conference Proceedings (OSTI)

Low-voltage environmentally-qualified cable components have been evaluated relative to the effects of age-related degradation mechanisms; the capability of current design limits, inservice examination, testing, repair, refurbishment, and other programs to manage these effects; and the assurance that these cable components can continue to perform their intended safety functions in the license renewal term. This industry report (IR), one of a series of ten, provides a generic technical basis for evaluation...

1994-07-01T23:59:59.000Z

320

EPRI Dissolved Gas Analysis Guide for High Voltage Cables and Transformers 2013 Update  

Science Conference Proceedings (OSTI)

Dissolved gas analysis (DGA) is deemed to be an economical and reliable diagnostic test for both cables and transformers and is finding widespread application worldwide. The general subject of DGA has continued to receive considerable attention for several decades. While there is commonality between cable and transformer DGA and the oil-paper insulating system, there are marked differences with respect to DGA due to the differing designs, materials, and operating conditions associated with the two ...

2013-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Ultra high-current superconducting cables for a 2. 2-Tesla, 300-kilojoule energy storage magnet  

DOE Green Energy (OSTI)

These 2.2-T, 300-kJ magnets are to operate at 10 to 12 kA with a safety factor in critical current of about 50 percent at 10 kA. The conductor must exhibit low losses in addition to being stable. Magnetic Corporation of America (MCA) designed a flat conductor using 1224 copper-matrix, monofilament wires combined in two stages of cabling followed by two stages of flat braiding. Two of these conductors were constructed, one with wire already on hand and the second using wire made specifically for this application. Intermagnetics General Corporation (IGC) designed two rectangular conductors using 315 and 319 mixed-matrix multifilament wires combined in three stages of cabling followed by compaction in a Turk's head. The maximum transport current capabilities (I/sub t/) of these cables were measured in hairpin shaped samples with the straight section under test in perpendicularly applied fields. The measured results at 2.5 T for the two MCA cables were 11.7 kA and 15.4 kA, and for the IGC cables were 18.2 kA and 19.3 kA (extrapolated). In addition, samples of the compacted and uncompacted major strands from the IGC cables were tested. The results of these measurements are compred with values of I/sub t/ from the single-wire critical currents taking into account the adjacent conductor fields and the cable self-fields.Several causes of degradation of I/sub t/ in the compacted cable are discussed including those due to experimental factors.

Miranda, G.A.; Rhodenizer, R.; Rackov, P.; Punchard, W.F.B.; de Winter, T.A.

1976-08-17T23:59:59.000Z

322

Plant Engineering: Medium-Voltage Cable Failure Mechanism Research, Update 5  

Science Conference Proceedings (OSTI)

This report compiles and extends previously published information gained from EPRI research involving medium-voltage cable failure mechanisms. Four previous reports in this series (EPRI reports 1018777, 1021069, 1022965, and 1024894) presented various results from the study of cables removed from underground applications after 2938 years of service. The sum knowledge from that work is contained in those four documents, but to view the cumulative information and lessons learned would require ...

2013-09-30T23:59:59.000Z

323

Program on Technology Innovation: A Superconducting DC Cable  

Science Conference Proceedings (OSTI)

Shortly after the beginning of the twentieth century, dc power transmission was replaced by ac in order to achieve efficient transmission of electric power over long distances with available conductors and at safe distribution voltages. However, dc power was not completely abandoned, and the advent of solid-state power electronic ac-to-dc conversion equipment has reinvigorated its application. High-voltage dc power is more desirable for long-range transmission than ac in many ways: dc uses two wires rath...

2009-12-15T23:59:59.000Z

324

To connect to Boiler Television, you will need to provide a coaxial cable to connect your television set to the cable wall outlet. In connecting the coaxial  

E-Print Network (OSTI)

To connect to Boiler Television, you will need to provide a coaxial cable to connect your? By providing this initial information, you help Boiler Television staff assess and resolve this issue as soon for use with any University Residences work request -- not just for the Boiler Television system. Set

Ginzel, Matthew

325

Development of a cable reel development system using a rotary joint for kilometer lengths of two-fiber multi-mode fiber optic cable  

SciTech Connect

Brookhaven National Laboratory (BNL) recently developed a two-component system for use during remote inspections. The system consists of a mobile unit with television cameras and other equipment and a stationary base station. A variety of signals must be continually transmitted between the two system components as the mobile unit is moved from the location to another. Two channels of broadband (10MHz) NTSC video are transmitted from the mobile unit to the base station, and a bi-directional ``talk set`` provides audio communication between personnel at each location. In addition, several channels of RS-232 are required to support present and future instruments used at the mobile unit and controlled by personnel at the base station. Brookhaven developed a mobile unit which communicated with a base station over a 2-fiber multimode fiber optic cable. One of the design requirements was maintaining constant communication with the base station during the time the mobile unit was moved about. To provide uninterrupted communications, deployment of the 1-km long fiber optic cable was initially performed with a ``spinning reel`` mechanism. The spinning reel mechanism proved to be mechanically unsuitable, and so the cable deployment mechanism was redesigned to spool the cable off the reel. The requirement for uninterrupted communications required a two-channel fiber optic rotary joint in the design. Incorporation of the rotary joint into the design is described, and appropriate reference material is included.

Curtiss, J.A.; Jahelka, J.R.

1995-08-11T23:59:59.000Z

326

HigHligHts Fossil Energy Techline, "DOE Releases Environmental Impact  

NLE Websites -- All DOE Office Websites (Extended Search)

Releases Environmental Impact Releases Environmental Impact Statement for FutureGen Project." The US Department of Energy (DOE) has released the Final Environmental Impact Statement (EIS) for the FutureGen Project, detailing the potential environmental effects of constructing the world's first coal-fired power plant that produces both electricity and commercial- grade hydrogen gas from coal, in addition to capturing and storing carbon dioxide (CO 2 ). The document evaluated four possible project sites in Mattoon, Illinois; Tuscola, Illinois; Jewett, Texas; and Odessa,

327

Long-Term Operations: Ethylene Propylene Rubber (EPR) Insulation Accelerated Aging Methodology Research for Medium-Voltage Cables  

Science Conference Proceedings (OSTI)

Ethylene propylene rubberinsulated (EPR-insulated) cables are the most common type of medium-voltage cables in U.S. plants. Accelerating the aging of EPR insulations has proven difficult. The research described in this report attempted alternative ways to accelerate the aging of EPR insulation in hopes of achieving a better method. Stressessuch as lower temperature, high-conductivity water, and additional voltagewere used to accelerate aging in a generic EPR cable. Additionally, ...

2012-09-20T23:59:59.000Z

328

Complete Fiber/Copper Cable Solution for Long-Term Temperature and Pressure  

Open Energy Info (EERE)

Complete Fiber/Copper Cable Solution for Long-Term Temperature and Pressure Complete Fiber/Copper Cable Solution for Long-Term Temperature and Pressure Measurement in Supercritical Reservoirs and EGS Wells Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Complete Fiber/Copper Cable Solution for Long-Term Temperature and Pressure Measurement in Supercritical Reservoirs and EGS Wells Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 High-Temperature Downhole Tools Project Description Draka has engaged top academic, national laboratory and industry research scientists to develop the myriad of technical advances required - from glass chemistry to encapsulation metallurgy. Draka will develop the required advances in buffer tubing, cladding, wire insulation materials and cable packaging as well as coordinate activities of other participants. Draka Communications will develop the required advances in glass chemistry, fiber coatings and fiber drawing technologies. AltaRock Energy, Inc., a renewable energy company focused on research & development, will provide well field services and EGS wells for long-term testing and validation of the cable at Geysers, California. Tetramer has been engaged for the required advances in candidate materials for fiber coating and encapsulation technologies. Sandia will provide laboratory testing and validation of Draka's fiber solutions at elevated temperatures, pressures and hydrogen levels. Permatools (a Sandia EGS spin-off) will provide EGS tools to validate the finished cable design and will also coordinate in-well testing. Permatools (a Sandia EGS spin-off) will provide EGS tools to validate the finished cable design and will also coordinate in-well testing.

329

Superconducting cable cooling system by helium gas at two pressures  

DOE Patents (OSTI)

Thermally contacting, oppositely streaming, cryogenic fluid streams in the same enclosure in a closed cycle that changes the fluid from a cool high pressure helium gas to a cooler reduced pressure helium gas in an expander so as to be at different temperature ranges and pressures respectively in go and return legs that are in thermal contact with each other and in thermal contact with a longitudinally extending superconducting transmission line enclosed in the same cable enclosure that insulates the line from the ambient at a temperature T.sub.1. By first circulating the fluid from a refrigerator at one end of the line as a cool gas at a temperature range T.sub.2 to T.sub.3 in the go leg, then circulating the gas through an expander at the other end of the line where the gas becomes a cooler gas at a reduced pressure and at a reduced temperature T.sub.4 and finally by circulating the cooler gas back again to the refrigerator in a return leg at a temperature range T.sub.4 to T.sub.5, while in thermal contact with the gas in the go leg, and in the same enclosure therewith for compression into a higher pressure gas at T.sub.2 in a closed cycle, where T.sub.2 >T.sub.3 and T.sub.5 >T.sub.4, the fluid leaves the enclosure in the go leg as a gas at its coldest point in the go leg, and the temperature distribution is such that the line temperature decreases along its length from the refrigerator due to the cooling from the gas in the return leg.

Dean, John W. (Los Alamos, NM)

1977-01-01T23:59:59.000Z

330

HigHligHts Fossil Energy Techline, "DOE Announces Restructured FutureGen  

NLE Websites -- All DOE Office Websites (Extended Search)

Announces Restructured FutureGen Announces Restructured FutureGen Approach to Demonstrate Carbon Capture and Storage Technology at Multiple Clean Coal Plants." On January 30, US Secretary of Energy Samuel W. Bodman announced a restructured approach to the FutureGen project, which involves the demonstration of carbon capture and storage (CCS) t e c h n o l o g y a t s e v e r a l commercial-scale Integrated Gasification Combined Cycle (IGCC) power plants. The US Department of Energy (DOE) said that the reorganized approach caps their financing at no more than the plant's CCS component, allowing for plants to be operational as early as 2015. Under this restructured approach, DOE believes that at least twice the amount of carbon dioxide

331

Reduce Nb3Sn Strand Deformation when Fabricating High Jc Rutherford Cables  

SciTech Connect

During Phase I, our efforts were to reduce subelements deformation when fabricating Nb3Sn Rutherford cables. Our first focus is on 217-sublement tube type strand. We successfully made a few billets in ???¾?¢??? OD tube with different Cu spacing between subelements, and supplied the strands to Fermi Lab for cabling. Through the rolling test characterization, these types of strands did not have enough bonding between subelements to withstand the deformation. We saw copper cracking between subelements in the deformed strands. We scaled up the billet from ???¾?¢??? OD to 1.5?¢??? OD, and made two billets. This greatly improves the bonding. There is no copper cracking in the deformed strands when we scaled up the diameter of the billets. Fermi Lab successfully made cables using one of this improved strands. In their cables, no Cu cracking and no filament bridging occurred. We also successfully made a couple of billets with hex OD and round ID subelements for 61-subelement restack. Due to the lack of bonding, we could not judge its cabling property properly. But we know through this experiment, we could keep the Nb round, once we select the proper Cu spacing.

Dr. Xuan Peng

2012-12-17T23:59:59.000Z

332

An Economic Analysis of the Kilauea Geothermal Development and Inter-Island Cable Project  

Science Conference Proceedings (OSTI)

A study by NEA completed in April 1987 shows that a large scale (500 MW) geothermal development on the big island of Hawaii and the inter-island power transmission cable is economically infeasible. This updated report, utilizing additional information available since 1987, reaches the same conclusion: (1) The state estimate of $1.7 billion for development cost of the geothermal project is low and extremely optimistic. more realistic development costs are shown to be in the range of $3.4 to $4.3 billion and could go as high as $4.6 billion. (2) Compared to alternative sources of power generation, geothermal can be 1.7 to 2.4 times as costly as oil, and 1.2 to 1.7 times as costly as a solar/oil generating system. (3) yearly operation and maintenance costs for the large scale geothermal project are estimated to be 44.7 million, 72% greater than a solar/oil generating system. (4) Over a 40-year period ratepayers could pay, on average, between 1.3 (17.2%) and 2.4 cents (33%) per kWh per year more for electricity produced by geothermal than they are currently paying (even with oil prices stabilizing at $45 per barrel in 2010). (5) A comparable solar/oil thermal energy development project is technologically feasible, could be island specific, and would cost 20% to 40% less than the proposed geothermal development. (6) Conservation is the cheapest alternative of all, can significantly reduce demand, and provides the greatest return to ratepayers. There are better options than geothermal. Before the State commits the people of Hawaii to future indebtedness and unnecessary electricity rate increases, more specific study should be conducted on the economic feasibility, timing, and magnitude of the geothermal project. The California experience at The Geyers points up the fact that it can be a very risky and disappointing proposition. The state should demand that proponents and developers provide specific answers to geothermals troubling questions before they make an irreversible commitment to it. The state should also more carefully assess the potential risks and hazards of volcanic disturbances, the degree of environmental damage that could occur, the future demand for electricity, and the potential of supplying electricity from alternative energy sources, conservation and small scale power units. As they stated in the April 1987 study, to move ahead with rapid large scale geothermal development on Hawaii without thoroughly studying these aspects of its development is ill-advised and economically unsound.

None

1990-03-01T23:59:59.000Z

333

Apparatus for injecting high power laser light into a fiber optic cable  

DOE Patents (OSTI)

High intensity laser light is evenly injected into an optical fiber by the combination of a converging lens and a multisegment kinoform (binary optical element). The segments preferably have multi-order gratings on each which are aligned parallel to a radial line emanating from the center of the kinoform and pass through the center of the element. The grating in each segment causes circumferential (lateral) dispersion of the light, thereby avoiding detrimental concentration of light energy within the optical fiber.

Sweatt, William C. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

334

Ceramic end seal design for high temperature high voltage nuclear instrumentation cables  

DOE Patents (OSTI)

A coaxial, hermetically sealed end structure is described for electrical instrumentation cables. A generally tubular ceramic body is hermetically sealed within a tubular sheath which is in turn sealed to the cable sheath. One end of the elongated tubular ceramic insulator is sealed to a metal end cap. The other end of the elongated tubular insulator has an end surface which is shaped concave relative to a central conductor which extends out of this end surface. When the end seal is hermetically sealed to an instrumentation cable device and the central conductor is maintained at a high positive potential relative to the tubular metal sheath, the electric field between the central conductor and the outer sheath tends to collect electrons from the concave end surface of the insulator. This minimizes breakdown pulse noise generation when instrumentation potentials are applied to the central conductor.

Meiss, James D. (Berkeley, CA); Cannon, Collins P. (Kennewick, VA)

1979-01-01T23:59:59.000Z

335

Condition Assessment Techniques for Laminar Dielectric Transmission Cable Systems--2012 Update  

Science Conference Proceedings (OSTI)

As aging and higher circuit loadings lead to increased failures of pipe-type cable systems, utilities need effective techniques for assessing the key components of these systems. Many off-line and on-line diagnostic and assessment techniques are in use to inspect the condition of laminar dielectric cable systems. Because of the high labor costs and required circuit outage of off-line testing, current research and development also focuses on methods of on-line monitoring.A number of ...

2012-11-06T23:59:59.000Z

336

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

71 - 29880 of 31,917 results. 71 - 29880 of 31,917 results. Download Ensuring a Reliable Bulk Electric System http://energy.gov/oe/downloads/ensuring-reliable-bulk-electric-system Download North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk Electric System http://energy.gov/oe/downloads/north-american-electric-reliability-corporation-nerc-ensuring-reliable-bulk-electric Download Columbus HTS Power Cable http://energy.gov/oe/downloads/columbus-hts-power-cable Download Microsoft Word- BRC Charter http://energy.gov/downloads/microsoft-word-brc-charter Download Microsoft Word- LS Power Comments.doc http://energy.gov/downloads/microsoft-word-ls-power-commentsdoc Download Inspection Report: S10IS007 Alleged Procurement Irregularities Relating to the Clean CoalPower

337

Plant Engineering: Results of Cable Rejuvenation of Severely Degraded Black Ethylene Propylene Rubber Medium-Voltage Cables  

Science Conference Proceedings (OSTI)

This report describes the evaluation of the effects of commercially available rejuvenation on black ethylene propylene rubber (EPR) insulation. Black EPR is one of the main insulation types used in power plants built in the late 1960s to mid-1970s. Diagnostic testing and failure mechanism research performed by the Electric Power Research Institute (EPRI) have shown that this insulation, when exposed to wet or submerged conditions, can degrade to the point at which reliability concerns would require ...

2013-06-11T23:59:59.000Z

338

Fiber Optic Cables in Overhead Transmission Corridors: A State-of-the-Art Review  

Science Conference Proceedings (OSTI)

Many electric utilities are installing high capacity fiber optic cables and wires on their high voltage lines to satisfy their own internal communication needs and to gain additional revenues by leasing excess capacity to telecommunication network providers. This report presents a review and evaluation of the state-of-the-art in using fiber optic technology in high voltage corridors.

1997-11-26T23:59:59.000Z

339

An Examination of the Potential for Nano-Composites in the Formulation of HV Cable Insulation  

Science Conference Proceedings (OSTI)

Promising results have been achieved in EPRI research to develop and evaluate a new dielectric for high voltage (HV) and extra high voltage (EHV) extruded dielectric cable. The new dielectrica polymer based on nanotechnologyhas shown outstanding performance in critical properties related to higher design stress, superior defect tolerance, and reduced losses.

2005-11-17T23:59:59.000Z

340

A Virtual Environment for Interactive Assembly Simulation: From Rigid Bodies to Deformable Cables  

E-Print Network (OSTI)

and response are necessary for the interaction with rigid bodies and with input devices used by the engineer Science Algorithms and Complexity Group Im Stadtwald D-66123 Saarbr¨ucken, Germany schoemer motivate the need for deformable objects, especially cables, by practical examples and explain our

Schömer, Elmar

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

THE BASICS OF FIBER OPTIC CABLE (Single-mode multi-mode)  

E-Print Network (OSTI)

campuses, office buildings, industrial plants, and electric utility companies. A fiber-optic system is similar to the copper wire system that fiber-optics is replacing. The difference is that fiber-optics use into the fiber-optic medium where they travel down the cable. The light (near infrared) is most often 850nm

Wang, Deli

342

High-availability power for MX  

Science Conference Proceedings (OSTI)

With modern computer-based analyses it was possible to optimize an extensive power transmission and distribution network for supplying power to MX missile shelter sites. This network would serve some 4600 of these sites, located in suitable contiguous areas, with the shelter sites spaced one mile apart. With a dedicated transmission network and underground distribution cables we were able to predict an average commercial power availability of 0.99993 at the shelters. However, standby diesel generator sets are required at distribution centers because power is required after an electromagnetic pulse from a high-altitude weapon burst. With this strengthened distribution network, the authors were able to predict a suitable power availability of 0.999 at each missile site with incoming power supplied to each of our distribution centers at a 0.99 availability or better by local public utilities.

Oman, H.; Bannon, C.F.

1982-08-01T23:59:59.000Z

343

HigHligHts  

NLE Websites -- All DOE Office Websites (Extended Search)

"MRCSP Begins Field Tests in Michigan." The Midwest Regional Carbon Sequestration Partnership (MRCSP) has begun a large-scale CO 2 field project. The project is designed to inject and monitor at least 1 million metric tons of CO 2 into a series of oil fields that are in different stages of their production life cycles. The CO 2 will be injected into the geologic structures known as the northern Niagaran pinnacle reef trend. From Battelle News Release on July 9, 2013. Announcements DOE's NETL Releases Revised Editions of Best Practice Manuals (BPMs). The U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL) released revised editions of the following Best

344

HigHligHts  

NLE Websites -- All DOE Office Websites (Extended Search)

"MRCSP Begins Field Tests in Michigan." "MRCSP Begins Field Tests in Michigan." The Midwest Regional Carbon Sequestration Partnership (MRCSP) has begun a large-scale CO 2 field project. The project is designed to inject and monitor at least 1 million metric tons of CO 2 into a series of oil fields that are in different stages of their production life cycles. The CO 2 will be injected into the geologic structures known as the northern Niagaran pinnacle reef trend. From Battelle News Release on July 9, 2013. Announcements DOE's NETL Releases Revised Editions of Best Practice Manuals (BPMs). The National Energy Technology Laboratory (NETL) released revised editions of the following Best Practice Manuals (BPMs): "Public

345

HigHligHts  

NLE Websites -- All DOE Office Websites (Extended Search)

President Requests $638.0 Million for Fossl Energy Programs." President Requests $638.0 Million for Fossl Energy Programs." The FY 2014 budget request seeks $638 million for the Office of Fossil Energy (FE) to advance technologies related to the reliable, efficient, affordable, and environmentally sound use of fossil fuels, as well as managing the Strategic Petroleum Reserve and Northeast Home Heating Oil Reserve. The request includes $420 million for the fossil energy research and development (R&D) portfolio. For the Carbon

346

HigHligHts  

NLE Websites -- All DOE Office Websites (Extended Search)

Accepting Applications." Supported by the U.S. Department of Energy's (DOE) Office of Fossil Energy (FE) and the National Energy Technology Laboratory (NETL), the Research...

347

New protection method for HVDC lines including cables  

SciTech Connect

For the third project of the Hokkaido-Honshu HVDC Link in Japan, called the HVDC Link III project (rated at 250 kVdc-1,200 A-300 MW), the authors developed an HVDC transmission line protection method based on a new working principle that allows high-speed and highly sensitive detection of faults, enhancing reliability in the supply of electric power. In general, increasing the sensitivity of relays will lead to an increased likelihood of undesired operation whereas lowering the sensitivity will impair the responsiveness of the relays. The proposed method meets these apparently incompatible requirements very well. Basically classified as a differential scheme, the HVDC transmission line protection method compensates for a charging and discharging current that flows through the line-to-ground capacitance at times of voltage variations caused by a line fault or by the operation of dc power systems. The developed protection method is also characterized in that it uses current changes induced by voltage variations to restrain the operation of a relay. This configuration has made the proposed method far superior in responsiveness and sensitivity to the conventional protection method. A simulation using an EMTP (Electro-Magnetic Transients Program) was conducted on this method. Developed relay equipment embodying the new protection method was subjected to various verification tests, where this equipment was connected to a power system simulator, before being delivered to the HVDC Link III facility.

Takeda, H.; Ayakawa, H.; Tsumenaga, N.; Sanpei, M.

1995-10-01T23:59:59.000Z

348

Recent progress on system studies for long distance power transmission  

SciTech Connect

Two possible applications of helium-cooled underground cables for power transmission were studied to determine network characteristics and estimated costs. The first involved power transmission at 345 kV from a Long Island nuclear power plant to a substation 43 miles away. The second appication examined the feasibility of a 350 mi-long 550 kV transmission line from Western Pennsylvania to Allentown and Philadelphia. For both systems computer simulations were used to study operating characteristics. A detailed cost analysis was made. The Long Island study concluded that helium-cooled cables were well suited for high-power transmission in a suburban area, that such a system using two trenches and separate refrigerator stations would be more reliable than a single trench system, and that cost could be optimized by using a less expensive cryogenic envelope. The Pennsylvania study showed that the helium-cooled cable was technically capable of performing as well as overhead power lines, but the cost of the underground cryogenic system is so much greater that such a system could not be economically justified for long distance transmission across open country-side. (LCL)

Forsyth, E B

1976-01-01T23:59:59.000Z

349

A cabled acoustic telemetry system for detecting and tracking juvenile salmon: Part 1. Engineering design and instrumentation  

Science Conference Proceedings (OSTI)

The U.S. Army Corps of Engineers-Portland District started development of the Juvenile Salmon Acoustic Telemetry System (JSATS), a nonproprietary technology, in 2001 to meet the needs for monitoring the survival of juvenile salmonids through the 31 federal dams in the Federal Columbia River Power System (FCRPS). Initial development focused on coded acoustic microtransmitters, and autonomous receivers that could be deployed in open reaches of the river for detection of the juvenile salmonids implanted with microtransmitters as they passed the autonomous receiver arrays. In 2006 the Pacific Northwest National Laboratory (PNNL) was tasked with development of an acoustic receiver system for deployment at hydropower facilities (cabled receiver) for detecting fish tagged with microtransmitters as well as tracking them in 2 or 3-dimensions as the fish passed at the facility for determining route of passage. The additional route of passage information, combined with survival estimates, is used by the dam operators and managers to make structural and operational changes at the hydropower facilities to improve survival of fish as they pass the facilities and through the FCRPS.

Weiland, Mark A.; Deng, Zhiqun; Seim, Thomas A.; Lamarche, Brian L.; Choi, Eric Y.; Fu, Tao; Carlson, Thomas J.; Thronas, Aaron I.; Eppard, Matthew B.

2011-05-26T23:59:59.000Z

350

Microsoft PowerPoint - Subregion 3 Presentation 5-12-09.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Pool Power Pool Sub-Regional Planning Meeting Sub-Regional Area 3 David Sargent May 12, 2009 Southwestern Power Administration Slide 2 Southwestern Power Administration Slide 3 Five Year Construction Plan 2009 Bull Shoals Dam Bus Upgrade - from 600 to 1200/2000 amps The bus is a limiting element for the line going from Bull Shoals toward Harrison. New Madrid 161/69 kV Autotransformer Replacement New Madrid-Malden-Piggott-Kennett 69 kV Line Rebuild - 55 miles of line collapsed during an ice storm. We are completely rebuilding the line and doubling its capacity. Southwestern Power Administration Slide 4 2009 Projects Southwestern Power Administration Slide 5 Five Year Construction Plan 2010 Bull Shoals Dam Pothead/Cable Replacement - Potheads on cable from GSUs to substation are old and leaking. Potential for outage of

351

Microsoft PowerPoint - [2] Nari Hingorani Slides - HVDC Workshop April 2013  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy's Grid Tech Team Energy's Grid Tech Team Workshop Applications for High Voltage Direct Current (HVDC) Transmission Technologies April 22, 2013 NRECA Conference Center NRECA Conference Center Arlington, VA 22203 Keynote Speaker: Nari Hingorani HVDC Overview Today's HVDC * Power System in general has to be AC, because there is no DC Transformers * Therefore Today's HVDC involves conversion of AC to DC and back to AC * To justify HVDC, there needs to be enough cost or performance benefit to pay for the converters. Hingorani Applications for HVDC * Moving large amounts of power over long distances. * Moving power by cable over moderate to long * Moving power by cable over moderate to long distances. * Moving power between asynchronous systems. * Forcing ordered power into an area Hingorani

352

SITE ELECTRICAL POWER SYSTEM DESCRIPTION DOCUMENT  

Science Conference Proceedings (OSTI)

The Site Electrical Power System receives and distributes utility power to all North Portal site users. The major North Portal users are the Protected Area including the subsurface facility and Balance of Plant areas. The system is remotely monitored and controlled from the Surface Operations Monitoring and Control System. The system monitors power quality and provides the capability to transfer between Off-Site Utility and standby power (including dedicated safeguards and security power). Standby power is only distributed to selected loads for personnel safety and essential operations. Security power is only distributed to essential security operations. The standby safeguards and security power is independent from all other site power. The system also provides surface lighting, grounding grid, and lightning protection for the North Portal. The system distributes power during construction, operation, caretaker, and closure phases of the repository. The system consists of substation equipment (disconnect switches, breakers, transformers and grounding equipment) and power distribution cabling from substation to the north portal switch gear building. Additionally, the system includes subsurface facility substation (located on surface), switch-gear, standby diesel generators, underground duct banks, power cables and conduits, switch-gear building and associated distribution equipment for power distribution. Each area substation distributes power to the electrical loads and includes the site grounding, site lighting and lightning protection equipment. The site electrical power system distributes power of sufficient quantity and quality to meet users demands. The Site Electrical Power System interfaces with the North Portal surface systems requiring electrical power. The system interfaces with the Subsurface Electrical Distribution System which will supply power to the underground facilities from the North Portal. Power required for the South Portal and development side activities of the subsurface facility will be provided at the South Portal by the Subsurface Electrical Distribution System. The Site Electrical Power System interfaces with the Off-Site Utility System for the receipt of power. The System interfaces with the Surface Operations Monitoring and Control System for monitoring and control. The System interfaces with MGR Site Layout System for the physical location of equipment and power distribution.

E.P. McCann

1999-04-16T23:59:59.000Z

353

Evaluating Surface Water Cycle Simulated by the Australian Community Land Surface Model (CABLE) across Different Spatial and Temporal Domains  

Science Conference Proceedings (OSTI)

The terrestrial water cycle in the Australian Community Atmosphere Biosphere Land Exchange (CABLE) model has been evaluated across a range of temporal and spatial domains. A series of offline experiments were conducted using the forcing data from ...

Huqiang Zhang; Bernard Pak; Ying Ping Wang; Xinyao Zhou; Yongqiang Zhang; Liang Zhang

2013-08-01T23:59:59.000Z

354

The U.S. cable television industry : the multi-service operator organizational structure as a bundle of competencies  

E-Print Network (OSTI)

The United States cable television industry is experiencing fierce competition from telephone companies and content providers, as well as new and possibly unknown entrants. As organizations in the industry are currently ...

Moorthy, Satish K. (Satish Kumar)

2009-01-01T23:59:59.000Z

355

Observations of Transport Variability in the Baltic Sea by Parasitic Use of a Fiber-Optic Cable  

Science Conference Proceedings (OSTI)

Transports between the Swedish mainland and the island of Gotland were studied by means of motionally induced voltages. The copper mantle of an existent fiber-optic telecommunications cable was grounded on Gotland, and the data acquisition system ...

Peter Sigray; Peter Lundberg; Kristofer Ds

2004-07-01T23:59:59.000Z

356

Guidelines for the Interpretation of Dissolved Gas Analysis (DGA) for Paper-Insulated Underground Transmission Cable Systems  

Science Conference Proceedings (OSTI)

Laminar dielectric underground transmission cables represent a utility investment of approximately $20 billion. Protection of this investment depends on proper condition monitoring to avoid unscheduled outages, which can amount to hundreds of thousands of dollars per incident. The dissolved gas analysis (DGA) technique -- which has been successfully applied to transformers -- has now proven itself a cost-effective alternative for condition assessment of these paper-insulated underground transmission cabl...

2000-09-13T23:59:59.000Z

357

SOLDER?FILLING OF A CICC CABLE FOR THE EFDA DIPOLE MAGNET  

Science Conference Proceedings (OSTI)

Several prototype Cable?In?Conduit?Conductors (CICC) for the superconducting EDIPO (Efda DIPOle) revealed a degradation of their critical current (Ic) increasing with each loading cycle. The strong Lorentz?forces during operation in combination with the limited support of the single strands against these forces are thought to be the cause of the permanent degradation of the brittle Nb3Sn superconductor from which the multi?stranded CICC are made. In summer 2006 EFDA started to explore the possibility to remedy the Ic degradation by solder?filling the conductor in order to mechanically stabilize the twisted?strand cable inside the conduit. This solution was not considered as the main one

P. Bauer; P. Bruzzone; F. Cau; K. Weiss; A. Portone; E. Salpietro; M. Vogel; A. Vostner

2008-01-01T23:59:59.000Z

358

Design of Experiments to Determine Causes of Flex Cable Solder Wicking, Discoloration and Hole Location Defects  

Science Conference Proceedings (OSTI)

Design of Experiments (DoE) were developed and performed in an effort to discover and resolve the causes of three different manufacturing issues; large panel voids after Hot Air Solder Leveling (HASL), cable hole locations out of tolerance after lamination and delamination/solder wicking around flat flex cable circuit lands after HASL. Results from a first DoE indicated large panel voids could be eliminated by removing the pre-HASL cleaning. It also revealed eliminating the pre-HASL bake would not be detrimental when using a hard press pad lamination stackup. A second DoE indicated a reduction in hard press pad stackup lamination pressure reduced panel stretch in the y axis approximately 70%. A third DoE illustrated increasing the pre-HASL bake temperature could reduce delamination/solder wicking when using a soft press pad lamination stackup.

Wolfe, Larry

2009-04-22T23:59:59.000Z

359

Microstructure and Defects of Co-Doped BaFe2As2 Single Crystal ...  

Science Conference Proceedings (OSTI)

Transmission electron microscopy revealed that the film on bare (STO) or ... Gdbco Coated Conductors on Clad-Type Textured Metal Substrates for HTS Cables.

360

New advances in mitigating environmental impact of pipe-type cables  

Science Conference Proceedings (OSTI)

Through a comprehensive and aggressive research program Consolidated Edison Company of New York, Inc. (Con Edison) has designed, developed, and installed several new products to address the environmental impact of dielectric fluid from pipe-type cable systems. These include: On Line Leak Detection, Leak Location, Retractable Flow Direction Indicator, Full Stop Joints, and Transition Joints. This paper describes the application of the aforementioned products on the Con Edison underground transmission system.

Ghafurian, R.; Dominguez, J.; Santini, A.; Sobel, C. [Consolidated Edison Co. of New York, Inc., New York, NY (United States)] [Consolidated Edison Co. of New York, Inc., New York, NY (United States)

1999-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

An Examination of the Potential for Nano-Composites in the Formulation of HV Cable Insulation  

Science Conference Proceedings (OSTI)

On the basis of encouraging previous work on epoxy composites at Rensselaer Polytechnic Institute, nanodielectric formulations have been compounded to create materials which should provide enhanced properties for the cable industry. The nanoparticulates chosen for study here are based on low dielectric loss materials. Candidate host polymers were explored and through extensive materials characterization, processes and parameters for compounding these materials have been established. These materials have ...

2004-12-16T23:59:59.000Z

362

Novel and Low Cost Temperature Sensors for Lines, Transformers, and Cables  

Science Conference Proceedings (OSTI)

This document reports on an investigation into the performance of fiber optic sensing (e.g., in conductors, transformers, and cables) to determine change in fiber characteristics with regards to sensor-aging effects and performance accuracy with time. The project began in 2002 with a rigorous analysis of temperature sensors for both point and distributed systems across a conductor / transformer winding. Key requirements that must be met are low cost, reliable performance, and good aging characteristics (...

2002-12-16T23:59:59.000Z

363

Electric Cable Reel Rubber-Tired Gantry Cranes: Costs and Benefits  

Science Conference Proceedings (OSTI)

Port equipment manufacturers have responded to the increased focus on air quality control by creating a variety of cleaner equipment and making more electric equipment available to ports. Included in this equipment is the rubber-tired gantry (RTG) crane, which was historically available only with a diesel engine. Electric cable reel RTG cranes, relatively new to the U.S. market, may reduce port crane operating costs due to their lower energy costs, higher energy efficiencies, and longer equipment life. E...

2010-03-24T23:59:59.000Z

364

ETM (Distribution Network Automation on 10 kV cable line stations) (Smart  

Open Energy Info (EERE)

ETM (Distribution Network Automation on 10 kV cable line stations) (Smart ETM (Distribution Network Automation on 10 kV cable line stations) (Smart Grid Project) Jump to: navigation, search Project Name ETM (Distribution Network Automation on 10 kV cable line stations) Country Hungary Headquarters Location Budapest, Hungary Coordinates 47.498405°, 19.040758° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.498405,"lon":19.040758,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

365

File:07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf | Open Energy  

Open Energy Info (EERE)

HIAGeothermalAndCableSystemDevelopmentPermitting.pdf HIAGeothermalAndCableSystemDevelopmentPermitting.pdf Jump to: navigation, search File File history File usage File:07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Go to page 1 2 Go! next page → next page → Full resolution ‎(1,275 × 1,650 pixels, file size: 66 KB, MIME type: application/pdf, 2 pages) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 15:07, 28 December 2012 Thumbnail for version as of 15:07, 28 December 2012 1,275 × 1,650, 2 pages (66 KB) Alevine (Talk | contribs) 17:47, 27 December 2012 Thumbnail for version as of 17:47, 27 December 2012 1,275 × 1,650, 2 pages (61 KB) Alevine (Talk | contribs)

366

Paraoccupational exposures to lead and tin carried by electric-cable splicers  

SciTech Connect

To test the hypothesis that electric-cable splicers contaminate their homes with lead and tin, nine splicers were matched with nine of their neighbors. House dust samples were collected in two areas within each home: a laundry room/dirty clothes area, and a composite sample from other areas in the house. Samples were analyzed by energy dispersive X-ray fluorescence for lead and tin (tin is a tracer to the occupational source of lead). The difference in the geometric mean lead concentrations in the laundry areas between the splicers' and neighbors' homes (1021 ppm and 390 ppm) was statistically significant (p < 0.025). The difference in concentrations from the other areas of the house (585 ppm and 329 ppm) was also significant (p < 0.05). Tin concentrations in house dust were very different between the two groups (p < 0.0005), suggesting that electric-cable splicers were contaminating their homes with lead and tin from work. Recommendations are included to prevent paraoccupational lead exposures by eliminating the pathways into the home. Another recommendation suggests that blood-lead levels be screened in children under the age of seven who live with electric-cable splicers.

Rinehart, R.D.; Yanagisawa, Y. (Harvard School of Public Health, Boston, MA (United States))

1993-10-01T23:59:59.000Z

367

Estimation the Performance of Solar Fiber Optic Lighting System after Repairing the Glass Fiber Cables in a South Korean Residential Building  

E-Print Network (OSTI)

The solar fiber optic lighting system consists of the solar ray concentrating apparatus, the tracking control, lighting transmission and emission parts. This system was installed on a 20-storey apartment building in South Korea. Many residents had concerns about its long-term maintenance. The most common maintenance difficulties are sun tracking problems and damaged glass fiber cables. Sometimes fiber optic lighting systems should not be repaired with splices. Splicing glass fiber cables often results in decreased system efficiency and further cable damage. In this study, the cost of replacing the cables was prohibitive; hence, the drop in efficiency of the damaged cables was answered by repairing through splicing. These damaged cables were repaired by specially process of cutting and polishing. Results showed that the luminous intensity ratio improved by 0.391%, though this was still lower than the recommended guideline of 0.725%. Accordingly, on average 55% of luminous intensity was increased.

Cha, K. S.; Kim, T. K.; Park, M. S.

2009-11-01T23:59:59.000Z

368

Variable Frequency Operations of an Offshore Wind Power Plant with HVDC-VSC: Preprint  

DOE Green Energy (OSTI)

In this paper, a constant Volt/Hz operation applied to the Type 1 wind turbine generator. Various control aspects of Type 1 generators at the plant level and at the turbine level will be investigated. Based on DOE study, wind power generation may reach 330 GW by 2030 at the level of penetration of 20% of the total energy production. From this amount of wind power, 54 GW of wind power will be generated at offshore wind power plants. The deployment of offshore wind power plants requires power transmission from the plant to the load center inland. Since this power transmission requires submarine cable, there is a need to use High-Voltage Direct Current (HVDC) transmission. Otherwise, if the power is transmitted via alternating current, the reactive power generated by the cable capacitance may cause an excessive over voltage in the middle of the transmission distance which requires unnecessary oversized cable voltage breakdown capability. The use of HVDC is usually required for transmission distance longer than 50 kilometers of submarine cables to be economical. The use of HVDC brings another advantage; it is capable of operating at variable frequency. The inland substation will be operated to 60 Hz synched with the grid, the offshore substation can be operated at variable frequency, thus allowing the wind power plant to be operated at constant Volt/Hz. In this paper, a constant Volt/Hz operation applied to the Type 1 wind turbine generator. Various control aspects of Type 1 generators at the plant level and at the turbine level will be investigated.

Gevorgian, V.; Singh, M.; Muljadi, E.

2011-12-01T23:59:59.000Z

369

Wireless Power May Cut the Cord for Plug-In Devices, Including Cars1 by Will Ferguson for National Geographic News, abbreviated2  

E-Print Network (OSTI)

Wireless Power May Cut the Cord for Plug-In Devices, Including Cars1 by Will Ferguson for National no power cord, a car fueled by a cordless panel in the floor:4 In a nondescript building just outside Boston, these and other applications of wireless electricity signal a future with fewer snaking5 cables.6

South Bohemia, University of

370

Electric Motors Using High Temperature Superconducting Materials Applied to Power Generating Station Equipment  

Science Conference Proceedings (OSTI)

Large high-temperature superconducting (HTS) electric motors have the potential to operate with much greater efficiencies than conventional iron core induction motors of the same rating. This study describes the design and successful testing in the superconducting state of two synchronous motors, a 2 horsepower motor with stationary HTS field coils and a 5 horsepower motor with rotating HTS field coils.

1997-03-24T23:59:59.000Z

371

Microsoft PowerPoint - [5] Le Tang - ABB Presentation at DOE HVDC Workshop  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVDC Technologies & ABB Experience HVDC Technologies & ABB Experience DOE Workshop - Applications for High-Voltage Direct Current Transmission Technologies Le Tang, ABB , April 22, 2013 In cable > 50 km (>30 miles), most of AC current is needed to charge and discharge In overhead lines > 200 km (>120 miles), most of AC voltage is needed to G G load I C = ωCU 0 U L = ωLI 0 I 0 U 0 I = I 0 - I C U=U 0 -U L Cable Overhead Line C load L Why is DC important in the Transmission Grid ? Capacitance and Inductance of Power Line © ABB Group April 22, 2013 | Slide 2 current is needed to charge and discharge the "C" (capacitance) of the cable most of AC voltage is needed to overcome the "L" (inductance) of the line ⇒ C& L can be compensated by reactors/capacitors or FACTS ⇒ or by use of DC, which means

372

Condition Assessment of 138-kV Iwilei-Archer High-Pressure Fluid-Filled Cable System of Hawaiian Electric Company  

Science Conference Proceedings (OSTI)

High-pressure fluid-filled (HPFF) transmission cable systems are characterized by an exceedingly long life, with well-maintained integrity of the pipe and operating pressure. However, some failures have been encountered in the past 15 years, probably due to advancing age and harder use. The cable systemswhich are composed of the cable, splices, terminations, trifurcators, pumping plants, risers, and so onshould be adequately maintained and routinely inspected.

2011-04-13T23:59:59.000Z

373

Power Distribution in a CMS Tracker for the SLHC  

E-Print Network (OSTI)

An upgraded tracker for CMS will need a new architecture for powering to keep the power dissipated in the power cables to acceptable levels. Inductor topologies to reduce the stray magnetic field are discussed together with measurements of the magnetic field produced by prototype inductors. A transformer based DC-DC converter has the potential to produce a high stepdown ratio whilst producing a low stray field and retaining high efficiency. The relative merits of buck configuration and transformer based DC-DC converters are discussed.

Cussans, D G; Hill, C

2008-01-01T23:59:59.000Z

374

Applications of superconductivity in electric power systems  

DOE Green Energy (OSTI)

Major applications of superconductivity to power systems are considered. The state of the art of materials and refrigeration developments that are necessary for these applications is reviewed. Specific applications including superconducting cables for power transmission and superconducting magnetics for MHD generators, for energy storage, and for magnetically-confined fusion power generation are discussed in terms of their advantages and the progress being made toward introducing the various devices into real situations. It is concluded that the feasibility of superconducting devices is assured, and that, although their performance, reliability, and cost effectiveness for use in power generation, transmission, and storage remain to be proven, it is reasonable to expect that superconductivity can make it in the real world. (LCL)

Keller, W.E.

1976-01-01T23:59:59.000Z

375

Superconductivity Program Overview High-Temperature Superconductivity  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SuperconducTiviTy program haS Three FocuS areaS: SuperconducTiviTy program haS Three FocuS areaS: SuperconducTiviTy applicaTionS Developing HTS-based electric power equipment such as transmission and distribution cables and fault current limiters Second-generaTion Wire developmenT Developing high-performance, low-cost, second- generation HTS wire at long lengths STraTegic reSearch Supporting fundamental research activities to better understand relationships between the microstructure of HTS materials and their ability to carry large electric currents over long lengths Superconductivity Program Overview High-Temperature Superconductivity for Electric Systems Office of Electricity Delivery and Energy Reliability www.oe.energy.gov Office of Electricity Delivery and Energy Reliability, OE-1 U.S. Department of Energy - 1000 Independence Avenue, SW - Washington, DC 20585

376

ITER Model Coil Tests Overview: Nb3Sn Strand Properties in Cable-in-Conduit-Conductors  

SciTech Connect

During the ITER Model Coil Program two large coils and three Insert coils were built and tested. The test campaigns provided very valuable data on the Conductor in Conduit Cable (CICC) properties. The tests showed that the Nb3Sn strands in CICC behave differently than so-called witness strands, which underwent the same heat treatment. The paper describes Volt-temperature characteristics (VTC) and Volt-Ampere characteristics (VAC) measured in the tests, presents comparisons with the witness strands, and interprets the test results.

Martovetsky, N N

2003-04-14T23:59:59.000Z

377

Wave Power Demonstration Project at Reedsport, Oregon  

SciTech Connect

Ocean wave power can be a significant source of large?scale, renewable energy for the US electrical grid. The Electrical Power Research Institute (EPRI) conservatively estimated that 20% of all US electricity could be generated by wave energy. Ocean Power Technologies, Inc. (OPT), with funding from private sources and the US Navy, developed the PowerBuoy? to generate renewable energy from the readily available power in ocean waves. OPT's PowerBuoy converts the energy in ocean waves to electricity using the rise and fall of waves to move the buoy up and down (mechanical stroking) which drives an electric generator. This electricity is then conditioned and transmitted ashore as high?voltage power via underwater cable. OPT's wave power generation system includes sophisticated techniques to automatically tune the system for efficient conversion of random wave energy into low cost green electricity, for disconnecting the system in large waves for hardware safety and protection, and for automatically restoring operation when wave conditions normalize. As the first utility scale wave power project in the US, the Wave Power Demonstration Project at Reedsport, OR, will consist of 10 PowerBuoys located 2.5 miles off the coast. This U.S. Department of Energy Grant funding along with funding from PNGC Power, an Oregon?based electric power cooperative, was utilized for the design completion, fabrication, assembly and factory testing of the first PowerBuoy for the Reedsport project. At this time, the design and fabrication of this first PowerBuoy and factory testing of the power take?off subsystem are complete; additionally the power take?off subsystem has been successfully integrated into the spar.

Mekhiche, Mike [Principal Investigator] [Principal Investigator; Downie, Bruce [Project Manager] [Project Manager

2013-10-21T23:59:59.000Z

378

Categorical Exclusion Determinations: Western Area Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

November 23, 2010 November 23, 2010 CX-004887: Categorical Exclusion Determination Cable and Conduit Addition Within the Fenced Area of the Buck Boulevard Substation CX(s) Applied: B4.6 Date: 11/23/2010 Location(s): Riverside County, California Office(s): Western Area Power Administration-Desert Southwest Region November 23, 2010 CX-007129: Categorical Exclusion Determination Buck Boulevard Substation CX(s) Applied: B4.6 Date: 11/23/2010 Location(s): Ripley, California Office(s): Western Area Power Administration-Desert Southwest Region November 5, 2010 CX-004898: Categorical Exclusion Determination Gila-Wellton-Mohawk (Structure Maintenance) CX(s) Applied: B1.3 Date: 11/05/2010 Location(s): Yuma County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region

379

Southwestern Power Administration Categorical Exclusion Determination Form  

NLE Websites -- All DOE Office Websites (Extended Search)

Associated Electric Cooperative, Inc. Substation Improvements Associated Electric Cooperative, Inc. Substation Improvements Program or Field Office: Southwestern Power Administration Location{s) (City/County/State): Springfield, Missouri, Greene County Proposed Action Description: Associated Electric Cooperative, Inc. proposes to install new underground conduit and cable in Southwestern Power Administrations' Springfield, Missouri electrical substation. Categorical ExciusionCs) Al'l'lied: 10 CFR 1021, Appendix B to Subpart D, Part B4.6- Additions and modifications to electric power transmission facilities within a previously disturbed or developed facility . For the complete DOE National Environmental Policy Act regulations regarding categorical exclusions, including the full text of each categorical exclusion, see Subpart D of 10 CFR Part 1021.

380

Southwestern Power Administration Categorical Exclusion Determination Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Associated Electric Cooperative, Inc. Substation Improvements Associated Electric Cooperative, Inc. Substation Improvements Program or Field Office: Southwestern Power Administration Location{s) (City/County/State): Springfield, Missouri, Greene County Proposed Action Description: Associated Electric Cooperative, Inc. proposes to install new underground conduit and cable in Southwestern Power Administrations' Springfield, Missouri electrical substation. Categorical ExciusionCs) Al'l'lied: 10 CFR 1021, Appendix B to Subpart D, Part B4.6- Additions and modifications to electric power transmission facilities within a previously disturbed or developed facility . For the complete DOE National Environmental Policy Act regulations regarding categorical exclusions, including the full text of each categorical exclusion, see Subpart D of 10 CFR Part 1021.

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

STATEMENT OF CONSIDERATIONS REQUEST BY IGC-SUPERPOWER, LLC, FOR...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

entitled "510 MVA High Temperature Superconducting (Hereinafter "HTS) Power Transformer," pertains to the development of an advanced HTS 510 MVA alpha prototype...

382

Power Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Operations Outage Coordination Standards of Conduct Transmission Planning You are here: SN Home page > Power Operations Power Operations Western's Sierra Nevada Region...

383

ESS 2012 Peer Review - Superconducting Magnet ESS with Direct Power Electronics Interface - V.R. Ramanan, ABB  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

© ABB Group © ABB Group October 5, 2012 | Slide 1 Superconducting Magnet Energy Storage System with Direct Power Electronics Interface Project Goal  Competitive, fast response, grid-scale MWh superconducting magnet energy storage (SMES) system  Demonstrated through a small scale prototype, (20 kW, 2.5 MJ) and direct connection power electronics converter (with Si-based devices) V.R. Ramanan, ABB US Corporrate Research Center GRIDS SMES SYSTEM SMES Coil MV Feeder Power Converter ABB Brookhaven NL 2G HTS Wire SuperPower MV/LV MV/LV MV/LV HV/MV Wind Park Solar Park Transmission Line Converter & System Design/Prototyping LV Loads University of Houston ABB Project Update  Issues related to SMES system integration being addressed  Project slightly behind schedule; on budget

384

Microsoft PowerPoint - Bull Shoals U1 repair MSB edit 3.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

Bull Shoals Unit 1 161kV Bull Shoals Unit 1 161kV Switchyard Feeder Repair Bull Shoals Unit 1 161kV Bull Shoals Unit 1 161kV Switchyard Feeder Repair Switchyard Feeder Repair Mark Dixson Little Rock District US Army Corps US Army Corps of Engineers of Engineers ® ® One Corps Serving The Army and the Nation * Original Equipment - 52 years old. * Unit 1 Oil filled cable pothead failed and exploded on Sept 6 2006. * Resulting fire and fire suppression damaged oil insulated cable system * Minor damage to power plant. Background Background Background US Army Corps US Army Corps of Engineers of Engineers ® ® One Corps Serving The Army and the Nation * Transformer Unit 2 damaged and removed from service. * Cause of fire - Failure of Pothead stress cone assembly and build up of combustible gas * Power Plant lost all power and went in the

385

Pressurization Tests on High-Pressure Fluid-Filled Underground Transmission Cables of Public Service Electric & Gas Company  

Science Conference Proceedings (OSTI)

This report describes pressurization tests performed on 138-kV and 230-kV high-pressure fluid-filled (HPFF) transmission cable samples. The samples were removed from two Public Service Electric & Gas Company (PSE&G) underground transmission lines.

2009-12-10T23:59:59.000Z

386

Development of an Oil Deterioration Test Method to Monitor the Condition of High-Pressure Fluid-Filled Paper Cable  

Science Conference Proceedings (OSTI)

Using a dissolved-gas analysis (DGA) service for "fingerprinting" as well as periodic analyses of HPFF cable can alert a utility to potential catastrophic events and to thermal or electrical changes in the insulating fluid. If accurate historical records are kept and updated, regular DGA can serve as a preventive and predictive maintenance test and possibly an indicator of remaining service life.

1991-12-01T23:59:59.000Z

387

Standby power consumption in U.S. residences  

Science Conference Proceedings (OSTI)

{open_quotes}Leaking electricity{close_quotes} is the electricity consumed by appliances while they are switched {open_quotes}off{close_quote} or not performing their principal function. Leaking electricity represents approximately 5 % of U.S. residential electricity. This is a relatively new phenomenon and is a result of proliferation of electronic equipment in homes. The standby losses in TVs, VCRs, compact audio systems, and cable boxes account for almost 40% of all leaking electricity. There is a wide range in standby losses in each appliance group. For example, standby losses in compact audio systems range from 2.1 to 28.6 W, even though their features are identical. In some cases, leaking electricity while switched off was only slightly less than energy consumption in the on mode. New features in these appliances may greatly increase leaking electricity, such as electronic program guides in TVs and cable boxes. In the standby mode, these new features require many extra components energized to permit the downloading of information. Several techniques are available to cut standby losses, most without using any new technologies. Simple redesign of circuits to avoid energizing unused components appears to save the most energy. A separate power supply, precisely designed for the actual power needed, is another solution. A switch mode power supply can substitute for the less efficient linear power supply. Switch mode power supplies cut no-load and standby losses by 60-80%. The combination of these techniques can cut leaking electricity by greater than 75%.

Huber, W.

1997-12-01T23:59:59.000Z

388

Microsoft PowerPoint - [9] Jack McCall Slides - HVDC Workshop April 2013  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tres Tres Amigas Superstation: Opportunity, Technology, Challenges U.S. DOE Applications for High-Voltage Direct U.S. DOE Applications for High-Voltage Direct Current Transmission Technologies Workshop April 22, 2013 Arlington, VA Project Value Creation Connects the three US asynchronous power grids through a DC hub that can regulate the direction and level of power flows between the grids Provides economic incentives to further drive the growth of the nation's renewable resources 2 Optimizes the value of existing and planned AC and DC/ HTS infrastructure Provides open-access and cost-effective transmission services consistent with NERC standards and regional reliability requirements Provides voltage support, capacity firming and other value-added and ancillary

389

MHK Technologies/Morild Power Plant | Open Energy Information  

Open Energy Info (EERE)

Morild Power Plant Morild Power Plant < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Morild Power Plant.jpg Technology Profile Primary Organization Hydra Tidal Energy Technology AS Project(s) where this technology is utilized *MHK Projects/MORILD Demonstration Plant Technology Resource Click here Current/Tidal Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 5/6: System Integration and Technology Laboratory Demonstration Technology Description The Morild power plant is a floating, moored construction based on the same principle as horizontal axis wind turbines. The plant has 4 two-blade underwater turbines and can utilize the energy potential in tidal and ocean currents. The 4 turbines transmit power via hydraulic transmission to 2 synchronous generators. Can be pitched 180 degrees to utilize energy in both directions. A cable from the transformer on the prototype to shore transfers energy.

390

Design considerations for a fiber optic communications network for power systems  

Science Conference Proceedings (OSTI)

The design of a fiber optic communication network for monitoring and control in power systems is discussed. It is shown that by appropriate choice of protocols, a fault-tolerant system can be built that operates in any arbitrary configuration. Since the network is based on fiber optics, it can be made fast enough for substation monitoring and control. In this application, a relatively small number of cables is required to implement a high reliability system. The network can also be used for distribution automation. In this application the network is required to reach all parts of the power system, and the fiber cable itself becomes a significant fraction of the cost of communications. However, since many applications can be supported at once, the cost per function can be reasonable.

Kirkham, H.; Johnston, A.R. [Jet Propulsion Lab., Pasadena, CA (United States); Allen, G.D. [American Electric Power Service Corp., Columbus, OH (United States)

1993-08-01T23:59:59.000Z

391

MHK Technologies/SyncWave Power Resonator | Open Energy Information  

Open Energy Info (EERE)

Power Resonator Power Resonator < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage SyncWave Power Resonator.jpg Technology Profile Primary Organization Marinus Power Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The SyncWave Power Resonator makes power by capturing the motion differential due to the phase lag between the two concentric float structures the Float and the Spar each having a very different resonance characteristic in waves The power generated from this phase lag is maximized under varying ocean wave conditions via a proprietary variable inertia tuning system SWELS located inside the central Spar Power is captured by an hydraulic power take off which drives a variable speed generator Power outputs conditioned by modern power electronics from several SyncWave Units in a wave farm will be collected and converted to in farm power in a sea bed mounted collector hub then transmitted ashore by subsea cable for interconnection to a shoreside load

392

Influence of the 26N RAPIDMOCHA Array and Florida Current Cable Observations on the ECCOGODAE State Estimate  

Science Conference Proceedings (OSTI)

The incorporation of local temperature and salinity observations from the Rapid Climate ChangeMeridional Overturning Circulation and Heatflux Array (RAPIDMOCHA), as well as the cable estimates of volume transport in the Florida Current (FC), is ...

Johanna Baehr

2010-05-01T23:59:59.000Z

393

Turbine-Generator Topics for Power Plant Engineers: Fundamentals of Electromagnetic Signature Analysis  

Science Conference Proceedings (OSTI)

Electromagnetic signature analysis (EMSA) is the process used to evaluate the electromagnetic interference (EMI) generated by abnormalities in almost any energized power plant equipmentfrom cable connections to broken rotor bars in a motor to the isolated phase bus and generator step-up transformer. EMSA will detect any defect that involves EMI, noise, arcing, corona, partial discharge, gap discharge, sparking or microsparking, or any combination of these.With EMSA, every signal ...

2013-02-15T23:59:59.000Z

394

Testing of XLPE Transmission Cable Terminations at Three Utilities: Southern California Edison, Public Service Company of Colorado, and PECO Energy Company  

Science Conference Proceedings (OSTI)

Detection of discharges at an early stage will increase the reliability of high-voltage cable systems. EPRI has sponsored partial discharge testing of 14 cross-linked polyethylene (XLPE) cable terminations at Southern California Edison, Public Service Company of Colorado, and PECO Energy Company. Three of the 14 terminations showed evidence of partial discharge activity. This report describes the testing procedures and results obtained from performing very high frequency partial discharge measurements.

1997-06-04T23:59:59.000Z

395

INTERNATIONAL UNION OF OPERATING ENGINEERS NATIONAL HAZMAT PROGRAM - PORTER-CABLE CIRCULAR SAW OENHP: 2001-04, VERSION A  

DOE Green Energy (OSTI)

Florida International University's (FIU) Hemispheric Center for Environmental Technology (HCET) evaluated five saws for their effectiveness in cutting specially prepared fiberglass-reinforced plywood crates. These crates were built as surrogates for crates that presently hold radioactively contaminated glove boxes at the Department of Energy's (DOE) Los Alamos facility. The Porter-Cable circular saw was assessed on August 15-16, 2001 (Porter-Cable No.1 and Porter-Cable No.2, respectively). During the FIU test of efficacy, a team from the Operating Engineers National Hazmat Program (OENHP) evaluated the occupational safety and health issues associated with this technology. The Porter-Cable saw is a straightforward machine for cutting wood of varying thickness. The blade is fully guarded with a fixed upper and a lower retractable guard. The lower guard retracts as the blade engages the work piece. The unit is operated with an on/off guarded trigger switch and is supported with a handgrip mounted near the front of the saw. The saw is equipped with a directional nozzle, which aims sawdust away from the operator and the line of cut. An optional vacuum system, attached to the directional nozzle, is used to remove and collect dust. During the demonstration of Porter-Cable No.1, personal noise sampling indicated that one worker was under and one was at the Occupational Safety and Health Administration's (OSHA) Action Level of 85 decibels (dBA) with time-weighted averages (TWA's) of 82.7 and 84.6 dBA, respectively. During the demonstration of Porter-Cable No.2, however, both workers did exceed the Action Level with TWA's of 89.7 and 90.0 dBA. These data are not entirely representative as they were gathered during a simulation and not at the actual worksite. Additional sampling should be conducted on-site, but the workers should wear hearing protection until it is determined that it is no longer necessary. The total nuisance dust sample for Porter-Cable No.1 was 3.53 milligrams per cubic meter (mg/m{sup 3}), which is lower than the OSHA Permissible Exposure Limit (PEL) of 15 mg/m{sup 3} and the American Conference of Governmental Industrial Hygienists' (ACGIH) Threshold Limit Value (TLV) of 10 mg/m{sup 3}. Porter-Cable No.2's nuisance dust results yielded a value of 22.05 mg/m{sup 3}, which is over the PEL and TLV. The fiber analysis for the first demonstration yielded 12.9 fibers per cubic centimeter (f/cc), which is much higher than the PEL of 1 f/cc. Galson Laboratories considered the fiber analysis for the second demonstration void due to the overloading of dust on the filter. Kickback, the sudden reaction to a pinched blade, is possible with this saw and could cause the saw to lift up and out of the work piece and toward the operator. Proper work position and firm control of the saw minimizes the potential for a sprain or strain. Care needs to be exercised to support the work piece properly and to not force the tool.

Unknown

2002-01-15T23:59:59.000Z

396

The development of ShortWatch, a novel overtemperature or mechanical damage sensing technology for wires or cables. Final report  

SciTech Connect

'ShortWatch' is a patented technology which for the first time offers electrical wire/cable products providing real-time, 'in-situ' (1) condition monitoring that warns of insulation damage before an electrical fault occurs, (2) assessment of the ability to perform in a Design Basis event, (3) distributed sensor warning of overtemperature, and (4) insulation leakage measurement capability providing arc sensing and a reliable tool for wire age prediction.

Watkins, Ken; Morris, Jack; Wong, C.P.; Luo, Shijian

2001-09-07T23:59:59.000Z

397

Evaluation of Medium-Voltage Cable Joints: Single-Phase, Three-Phase, and Branch Transition Joints  

Science Conference Proceedings (OSTI)

This report evaluates three single-phase transition joints, three three-phase trifurcating transition joints, and one three-phase trifurcating transition branch joint between ethylene propylene rubber (EPR) and paper-insulated lead-covered (PILC) 15-kV cables. Among installation parameters evaluated are time to install, complexity, skill required, ease of assembly, margin for error, and space needed for joint assembly and fabrication.

2003-05-19T23:59:59.000Z

398

Plant Support Engineering: Life Cycle Management Planning Sourcebooks: Medium-Voltage (MV) Cables and Accessories (Terminations and Splices)  

Science Conference Proceedings (OSTI)

EPRI is producing a series of Life Cycle Management Planning Sourcebooks, each containing a compilation of industry experience information and data on aging degradation and historical performance for a specific type of system, structure, or component (SSC). This sourcebook provides information and guidance for implementing cost-effective life cycle management (LCM) planning for medium-voltage (MV) cables and accessories (terminations and field splices)

2006-11-20T23:59:59.000Z

399

Testing of an impedance heating system for solar power tower applications  

DOE Green Energy (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI cable heat trace. We found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1996-05-01T23:59:59.000Z

400

Air quality investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility  

Science Conference Proceedings (OSTI)

The air quality implications of the test and evaluation activities at the Sandia National Laboratories Sol se Mete Aerial Cable Facility are examined. All facets of the activity that affect air quality are considered. Air contaminants produced directly include exhaust products of rocket motors used to accelerate test articles, dust and gas from chemical explosives, and exhaust gases from electricity generators in the test arenas. Air contaminants produced indirectly include fugitive dust and exhaust contaminants from vehicles used to transport personnel and material to the test area, and effluents produced by equipment used to heat the project buildings. Both the ongoing program and the proposed changes in the program are considered. Using a reliable estimate of th maximum annual testing level, the quantities of contaminants released by project activities ar computed either from known characteristics of test items or from EPA-approved emission factors Atmospheric concentrations of air contaminants are predicted using EPA dispersion models. The predicted quantities and concentrations are evaluated in relation to Federal, New Mexico, an Bernalillo County air quality regulations and the human health and safety standards of the American Conference of Governmental Industrial Hygienists.

Gutman, W.M.; Silver, R.J. [New Mexico State Univ., Las Cruces, NM (United States). Physical Science Lab.

1994-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Analysis of time-dependent radiation-induced conductivity in dielectrics and effect on cable SGEMP  

SciTech Connect

Analytic and numerical solutions are presented for a simple time-dependent solid-state band model of radiation-induced conductivity in polyethelene and Teflon. The analytic solution is found to provide insight to physical processes dominant in various intervals of time throughout the radiation pulse. The numerical solution provides a representation for the dose-dependent proportionality factor F(..gamma..), proposed by van Lint et al, used to calculate prompt conductivity from sigma/rho/ = F(..gamma..)..gamma... At high doses, F(..gamma..) is an order of magnitude smaller than at low doses. This decrease of F(..gamma..) is due to bimolecular recombination, an effect apparently not previously reported experimentally. The reduction in F(..gamma..) at high doses is shown to enhance the short circuit current for a cable SGEMP model of residual gaps by a factor of three. In addition, the dose-dependent behavior of F(..gamma..) can significantly alter the shape and time of occurrence of the peak of the waveform of this short circuit current compared to corresponding results for a dose-independent factor.

Shaeffer, D.L.; Siegel, J.M.

1982-12-01T23:59:59.000Z

402

Automatic HTS force measurement instrument  

DOE Patents (OSTI)

A device is disclosed for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rotatable carousel successively locates a selected one of the high temperature superconductor samples in registry with the reference magnet. Mechanism varies the distance between one of the high temperature superconductor samples and the reference magnet, and a sensor measures levitation force of the sample as a function of the distance between the reference magnet and the sample. A method is also disclosed. 3 figs.

Sanders, S.T.; Niemann, R.C.

1999-03-30T23:59:59.000Z

403

New York City Transit Authority design guidelines. Power. Technical studies report  

SciTech Connect

The Power Standards for new lines provide the basic concepts for the design of traction power systems for new routes. The Standards describe the criteria used for the determination of the power requirements, the parameters used in the selection of substation sites and the types of electrical equipment employed for the conversion of High Tension AC power to DC traction power. They include the techniques used to control the power system from one control point and the means by which each substation can be controlled in the event of a supervisory cable failure. The Standards also describe the methods employed to give maximum safety in the substations and on the railroad in case of faults or emergencies. These guides should prove helpful in the design of traction power systems for new routes. (GRA)

1975-03-01T23:59:59.000Z

404

Prefire identification for pulse power systems  

DOE Patents (OSTI)

Prefires in a high-power, high-frequency, multi-stage pulse generator are detected by a system having an EMI shielded pulse timing transmitter associated with and tailored to each stage of the pulse generator. Each pulse timing transmitter upon detection of a pulse triggers a laser diode to send an optical signal through a high frequency fiber optic cable to a pulse timing receiver which converts the optical signal to an electrical pulse. The electrical pulses from all pulse timing receivers are fed through an OR circuit to start a time interval measuring device and each electrical pulse is used to stop an individual channel in the measuring device thereby recording the firing sequence of the multi-stage pulse generator.

Longmire, Jerry L. (Los Alamos, NM); Thuot, Michael E. (Espanola, NM); Warren, David S. (Los Alamos, NM)

1985-01-01T23:59:59.000Z

405

Power Electronics  

Energy.gov (U.S. Department of Energy (DOE))

Power electronics (PE) play a critical role in transforming the current electric grid into the next-generation grid. PE enable utilities to deliver power to their customers effectively while...

406

Wind Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Power As the accompanying map of New Mexico shows, the best wind power generation potential near WIPP is along the Delaware Mountain ridge line of the southern Guadalupe Mountains,...

407

Power Supplies  

Science Conference Proceedings (OSTI)

Figure: ...Fig. 5 Typical medium-frequency induction power supply incorporating (a) a parallel inverter and (b) a series inverter...

408

Power supply  

DOE Patents (OSTI)

A modular, low weight impedance dropping power supply with battery backup is disclosed that can be connected to a high voltage AC source and provide electrical power at a lower voltage. The design can be scaled over a wide range of input voltages and over a wide range of output voltages and delivered power.

Yakymyshyn, Christopher Paul (Seminole, FL); Hamilton, Pamela Jane (Seminole, FL); Brubaker, Michael Allen (Loveland, CO)

2007-12-04T23:59:59.000Z

409

Develop and test an internally cooled, cabled superconductor (ICCS) for large scale MHD magnets  

DOE Green Energy (OSTI)

The work conducted under DOE/PETC Contract DE-AC22-84PC70512 has included four principal tasks, (1) development of a Design Requirements Definition for a retrofit MHD magnet system, (2) analysis of an internally cooled, cabled superconductor (ICCS) to use in that design, (3) design of an experiment to test a subscale version of that conductor, which is a NbTi, copper stabilized superconductor, and (4) proof-of-concept testing of the conductor. The program was carried forth through the third task with very successful development and test of a conventional ICCS conductor with 27 multifilamentary copper-superconductor composite strands and a new concept conductor in which, in each triplet, two strands were pure copper and the third strand was a multifilamentary composite. In reviewing the magnet design and the premises for the conductor design it became obvious that, since the principal source of perturbation in MHD magnets derives from slippage between coils, or between turns in a coil, thereby producing frictional heat which must flow through the conductor sheath and the helium to the superconductor strands, an extra barrier might be highly effective in enhancing magnet stability and protection. This concept was developed and a sample conductor manufactured and tested in comparison with an identical conductor lacking such an additional barrier. Results of these conductor tests confirm the potential value of such a barrier. As the work of tasks 1 through 3 has been reported in detail in quarterly and semiannual reports, as well as in special reports prepared throughout the course of this project, this report reviews early work briefly and then discusses this last phase in great detail. 8 refs., 36 figs.

Marston, P.G.; Hale, J.R.; Dawson, A.M.

1990-04-30T23:59:59.000Z

410

Superconducting cable cooling system by helium gas and a mixture of gas and liquid helium  

DOE Patents (OSTI)

Thermally contacting, oppositely streaming cryogenic fluid streams in the same enclosure in a closed cycle that changes from a cool high pressure helium gas to a cooler reduced pressure helium fluid comprised of a mixture of gas and boiling liquid so as to be near the same temperature but at different pressures respectively in go and return legs that are in thermal contact with each other and in thermal contact with a longitudinally extending superconducting transmission line enclosed in the same cable enclosure that insulates the line from the ambient at a temperature T.sub.1. By first circulating the fluid in a go leg from a refrigerator at one end of the line as a high pressure helium gas near the normal boiling temperature of helium; then circulating the gas through an expander at the other end of the line where the gas becomes a mixture of reduced pressure gas and boiling liquid at its boiling temperature; then by circulating the mixture in a return leg that is separated from but in thermal contact with the gas in the go leg and in the same enclosure therewith; and finally returning the resulting low pressure gas to the refrigerator for compression into a high pressure gas at T.sub.2 is a closed cycle, where T.sub.1 >T.sub.2, the temperature distribution is such that the line temperature is nearly constant along its length from the refrigerator to the expander due to the boiling of the liquid in the mixture. A heat exchanger between the go and return lines removes the gas from the liquid in the return leg while cooling the go leg.

Dean, John W. (Los Alamos, NM)

1977-01-01T23:59:59.000Z

411

Biological investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility  

Science Conference Proceedings (OSTI)

This report provides results of a comprehensive biological field survey performed on the Sandia National Laboratories Aerial Cable Facility, at the east end of Kirtland Air Force Base (KAFB), Bernalillo County, New Mexico. This survey was conducted late September through October, 1991. ACF occupies a 440-acre tract of land withdrawn by the US Forest Service (USFS) for use by KAFB, and in turn placed under operational control of SNL by the Department of Energy (DOE). All land used by SNL for ACF is part of a 15,851-acre tract of land withdrawn by the US Forest Service. In addition, a number of different organizations use the 15,851-acre area. The project area used by SNL encompasses portions of approximately six sections (3,840 acres) of US Forest Service land located within the foothills of the west side of the Manzano Mountains (East Mesa). The biological study area is used by the KAFB, the US Department of Interior, and SNL. This area includes: (1) Sol se Mete Springs and Canyon, (2) East Anchor Access Road, (3) East Anchor Site, (4) Rocket Sled Track, (5) North Arena, (6) East Instrumentation Site and Access Road, (7) West Anchor Access Road, (8) West Anchor Site, (9) South Arena, (10) Winch Sites, (11) West Instrumentation Sites, (12) Explosive Assembly Building, (13) Control Building, (14) Lurance Canyon Road and vicinity. Although portions of approximately 960 acres of withdrawn US Forest Service land have been altered, only 700 acres have been disturbed by activities associated with ACF; approximately 2,880 acres consist of natural habitat. Absence of grazing by livestock and possibly native ungulates, and relative lack of human disturbance have allowed this area to remain in a more natural vegetative state relative to the condition of private range lands throughout New Mexico. This report evaluates threatened and endangered species found on ACF, as well as a comprehensive assessment of biological habitats.

Sullivan, R.M.

1994-10-01T23:59:59.000Z

412

Design and cost estimate of an 800 MVA superconducting power transmission  

Science Conference Proceedings (OSTI)

Numerous studies involving cost estimates have been performed for superconducting power transmission systems. As these systems were usually aimed at providing transmission from large clusters of generation the base power rating of the corridor was very high; in the case of the most comprehensive study it was 10,000 MVA. The purpose of this study is to examine a system which is very closely based on the prototype 1000 MVA system which was operated at Brookhaven National Laboratory over a four year period. The purpose of the study is to provide cost estimates for the superconducting system and to compare these estimates with a design based on the use of advanced but conventional cable designs. The work is supported by funding from the Office of Energy Research's Industry/Laboratory Technology Exchange Program. This program is designed to commercialize energy technologies. The technical design of the superconducting system was prepared by the BNL staff, the design of the 800 MVA conventional cable system was done by engineers from Underground Systems Incorporated. Both institutions worked on the cost estimate of the superconducting system. The description and cost estimate of the conventional cable system is given in the Appendix. 5 refs.

Alex, P.; Ernst, A. (Underground Systems, Inc., Armonk, NY (USA)); Forsyth, E.; Gibbs, R.; Thomas, R.; Muller, T. (Brookhaven National Lab., Upton, NY (USA))

1990-10-18T23:59:59.000Z

413

Arrangement for hydroelectric power plants  

SciTech Connect

Hydroelectric power plant contains a flow tube for the water, an inlet tube leading to the flow tube and a discharge tube leading from the flow tube. In the flow tube a turbine is arranged to be driven by the flowing water and which via a drive shaft drives an electric generator. Accentuated sub-divisioning as between mechanical unit and portions of an installation nature is provided. The turbine and generator are located in the direct vicinity of each other and together with the drive shaft form a unit which in its entirety is situate in the flow tube and arranged to be traversed by flowing water. The unit is so arranged that the turbine can be in contact with the water flow while the generator has a watertight enclosure into which the drive shaft extends through a watertight bushing. Furthermore an electric cable for transmitting the electricity produced is connected. The installation components, the said tubes, are made from prefabricated concrete components. The flow tube is essentially vertical and exhibits a support for the unit and, at its upper end, an aperture through which the unit can be lowered.

Osterberg, T.V.

1984-03-13T23:59:59.000Z

414

Use of a Geographic Mapping Tool in Power Line Routing for RF Hazard Identification: A Feasibility Evaluation  

Science Conference Proceedings (OSTI)

Radiofrequency (RF) fields induce currents and voltages on conductive objects with the general finding that larger or longer or taller objects, such as power lines and tall cranes, can result in greater currents and voltages. Medium wave frequencies (MF) associated with operation of AM radio broadcast stations are particularly prone to induction of RF voltages on long and/or tall cables that present the potential for arcing to ground or personnel who may initiate contact with the conductor. MF includes t...

2011-11-16T23:59:59.000Z

415

Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz: Preprint  

DOE Green Energy (OSTI)

This paper introduces the concept of constant Volt/Hz operation of offshore wind power plants. The deployment of offshore WPPs requires power transmission from the plant to the load center inland. Since this power transmission requires submarine cables, there is a need to use High-Voltage Direct Current transmission, which is economical for transmission distances longer than 50 kilometers. In the concept presented here, the onshore substation is operated at 60 Hz synced with the grid, and the offshore substation is operated at variable frequency and voltage, thus allowing the WPP to be operated at constant Volt/Hz.

Muljadi, E.; Singh, M.; Gevorgian, V.

2012-06-01T23:59:59.000Z

416

Putting Economic Power In Distributed Power t  

U.S. Energy Information Administration (EIA)

Putting Economic Power in Distributed Power. A distributed electricity generation system, often called distributed power, usually consists of ...

417

Power Marketing  

NLE Websites -- All DOE Office Websites (Extended Search)

Certificate Solicitations Benefit Review Energy Services Rates and Repayment WindHydro Integration Feasibility Study Send correspondence to: Power Marketing Manager Western...

418

Building and Fire Publications  

Science Conference Proceedings (OSTI)

... Evaluation of Fire Models for Nuclear Power Plant Applications: Cable ... cable trays; fire models; nuclear power plants; computer models; ventilation ...

419

Environmental interactions and the SP-100 power system  

SciTech Connect

The Civil Space Technology Initiative High-Capacity-Power Environmental Interactions Program has made great progress in defining and evaluating the interactions of the SP-100 power system with its expected ambient environments. The NASCAP/LEO and POLAR computer codes demonstrated that local electric fields at the user interface module are high. Therefore, particular attention must be paid to geometries and materials in this region to prevent arcing at conductor-insulator junctions in low Earth orbit. NASCAP/LEO and EPSAT computer models revealed that SP-100 payloads float about 100 V negative of the LEO plasma. In addition, ground tests and modeling done for the Space Station Freedom Electrical Grounding Tiger Team found that dielectric coatings often break down at such voltages in a plasma. Thus, surface coatings for SP-100 payloads should be carefully selected. Sputtering may also be a concern for long-duration missions in LEO at these voltages. Much work has been done on a sputtering model to evaluate surface material loss rates on SP-100 payloads. In ground plasma chamber tests of cables and cable insulators at SP-100 voltages, parasitic power losses due to the plasma current collected from possible pinholes or coating defects were quantified and shown to be small. Modeling revealed that the power loss from currents to other surfaces is also small. The atomic oxygen durability of SP-100 materials and coatings continues to be investigated in ground tests. In the upcoming Evaluation of Oxygen Interaction with Materials (EOIM-3) Shuttle flight experiment, a host of SP-100 materials will be evaluated for atomic oxygen durability in LEO. Finally, an evaluation of the interactions of the SP-100 power system with lunar and planetary environments has started. At a workshop on chemical and electrical interactions on Mars recently held at the NASA Lewis Research Center, many of primary interactions were identified.

Ferguson, D.C.

1993-01-01T23:59:59.000Z

420

Thermo-Mechanical Performance of 230-345kV High Pressure Pipe Type Cable Systems: Selection of Full Size Test Rig  

Science Conference Proceedings (OSTI)

This is a front-end project to the wider experimental study of the thermo-mechanical performance of high-pressure fluid-filled (HPFF) transmission class cables in pipe systems. The project first reviews published work on the mechanisms of deterioration of HPFF cables due to thermo-mechanical bending activity (TMB). The principal mechanisms are the reduction in electrical strength caused by a) damage and opening of the outer electrostatic shield layers and b) the increase in the size of the fluid filled b...

2004-12-27T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Solar Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Power Solar Power Project Opportunities Abound in the Region The WIPP site is receives abundant solar energy with 6-7 kWh/sq meter power production potential As the accompanying map of New Mexico shows, the WIPP site enjoys abundant year-round sunshine. With an average solar power production potential of 6-7 kWh/sq meter per day, one exciting project being studied for location at WIPP is a 30-50 MW Solar Power Tower: The American Solar Energy Society (ASES) is is a national trade association promoting solar energy as a clean source of electricity, and provides a comprehensive resource for additional information. DOE's Office of Energy Efficiency and Renewable Energy is also a comprehensive resource for more information on renewable energy.

422

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

423

rf power system for thrust measurements of a helicon plasma source  

SciTech Connect

A rf power system has been developed, which allows the use of rf plasma devices in an electric propulsion test facility without excessive noise pollution in thruster diagnostics. Of particular importance are thrust stand measurements, which were previously impossible due to noise. Three major changes were made to the rf power system: first, the cable connection was changed from a balanced transmission line to an unbalanced coaxial line. Second, the rf power cabinet was placed remotely in order to reduce vibration-induced noise in the thrust stand. Finally, a relationship between transmission line length and rf was developed, which allows good transmission of rf power from the matching network to the helicon antenna. The modified system was tested on a thrust measurement stand and showed that rf power has no statistically significant contribution to the thrust stand measurement.

Kieckhafer, Alexander W.; Walker, Mitchell L. R. [Department of Aerospace Engineering, High-Power Electric Propulsion Laboratory, College of Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

2010-07-15T23:59:59.000Z

424

Applied Super Conductor Group, Oxide Molecular Beam Epitaxy Group,  

NLE Websites -- All DOE Office Websites (Extended Search)

AEMG Homepage AEMG Homepage Site Details Homepage Research Publications Presentations Facilities How to Contact Us Other Information Basic Energy Sciences Directorate Links BNL Site Index Can't View PDFs? Advanced Energy Materials Group Applied Superconductivity The applied superconductivity research (past funded by DOE Office of Electricity Delivery and Energy Reliability) is related to modernization of the U.S. power grid. One direction of the modernization is replacement of normal metal (copper, aluminum) transmission lines with High Temperature Superconducting (HTS) cables. Our group concentrates its effort on studying fundamental thermodynamics of nucleation and texture development of thick YBCO layers. High-performance YBCO layer is a critical element of modern second generation (2G) HTS wire.

425

Power Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Projects Power Projects Contact SN Customers Environmental Review-NEPA Operations & Maintenance Planning & Projects Power Marketing Rates You are here: SN Home page > About SNR Power Projects Central Valley: In California's Central Valley, 18 dams create reservoirs that can store 13 million acre-feet of water. The project's 615 miles of canals irrigate an area 400 miles long and 45 miles wide--almost one third of California. Powerplants at the dams have an installed capacity of 2,099 megawatts and provide enough energy for 650,000 people. Transmission lines total about 865 circuit-miles. Washoe: This project in west-central Nevada and east-central California was designed to improve the regulation of runoff from the Truckee and Carson river systems and to provide supplemental irrigation water and drainage, as well as water for municipal, industrial and fishery use. The project's Stampede Powerplant has a maximum capacity of 4 MW.

426

Research and Development Roadmaps for Nondestructive Evaluation of Cables, Concrete, Reactor Pressure Vessels, and Piping Fatigue  

SciTech Connect

The purpose of the Materials Aging and Degradation Pathway is to develop the scientific basis for understanding and predicting long-term environmental degradation behavior of materials in nuclear power plants and to provide data and methods to assess the performance of systems, structures, and components essential to safe and sustained nuclear power plant operations. The understanding of aging-related phenomena and their impacts on systems, structures, and components is expected to be a significant issue for any nuclear power plant planning for long-term operations (i.e., service beyond the initial license renewal period). Management of those phenomena and their impacts during long-term operations can be better enabled by improved methods and techniques for detection, monitoring, and prediction of systems, structures, and components degradation.

Clayton, Dwight A.; Bakhtiari, Sasan; Smith, Cyrus M.; Simmons, Kevin L.; Ramuhalli, Pradeep; Coble, Jamie B.; Brenchley, David L.; Meyer, Ryan M.

2013-04-16T23:59:59.000Z

427

CFD MODELING OF ITER CABLE-IN-CONDUIT SUPERCONDUCTORS. PART V: COMBINED MOMENTUM AND HEAT TRANSFER IN RIB ROUGHENED PIPES  

Science Conference Proceedings (OSTI)

Computational Fluid Dynamics (CFD) techniques have been proposed and applied in a series of papers to analyze cable-in-conduit conductors (CICC) for the International Thermonuclear Experimental Reactor (ITER). Previous work on the pressure drop in the central channel of ITER CICC is extended here to the problem of combined heat and momentum transfer. The CFD model, solved by the FLUENT commercial code, is first validated against 2D and 3D data from compact heat exchangers, showing good agreement. The Colburn analogy between the friction factor f and the Nusselt number Nu is not verified in the considered 2D geometries, as shown by both experiment and simulation. The validated CFD model is finally applied to the 3D analysis of central channel-like geometries relevant for ITER CICC. It is shown that the heat transfer coefficient on the central channel side stays relatively close to the smooth-pipe (Dittus-Boelter) value.

Zanino, R.; Giors, S. [Dipartimento di Energetica, Politecnico Torino, I-10129 (Italy)

2008-03-16T23:59:59.000Z

428

Green Power Network: Green Power Marketing  

NLE Websites -- All DOE Office Websites (Extended Search)

to main content U.S. Department of Energy Energy Efficiency and Renewable Energy Green Power Network About the GPN Green Power Markets Buying Green Power Onsite Renewable...

429

Power inverters  

DOE Patents (OSTI)

Power inverters include a frame and a power module. The frame has a sidewall including an opening and defining a fluid passageway. The power module is coupled to the frame over the opening and includes a substrate, die, and an encasement. The substrate includes a first side, a second side, a center, an outer periphery, and an outer edge, and the first side of the substrate comprises a first outer layer including a metal material. The die are positioned in the substrate center and are coupled to the substrate first side. The encasement is molded over the outer periphery on the substrate first side, the substrate second side, and the substrate outer edge and around the die. The encasement, coupled to the substrate, forms a seal with the metal material. The second side of the substrate is positioned to directly contact a fluid flowing through the fluid passageway.

Miller, David H. (Redondo Beach, CA); Korich, Mark D. (Chino Hills, CA); Smith, Gregory S. (Woodland Hills, CA)

2011-11-15T23:59:59.000Z

430

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

431

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

432

Power Supplies  

Science Conference Proceedings (OSTI)

Table 2   Characteristics of the four major power sources for induction heating...state 180 Hz to 50 kHz 1 kW to 2 MW 75??95 No standby current; high efficiency; no moving parts;

433

20-kW solar photovoltaic flat-panel power system for an uninterruptible power-system load in El Paso, Texas. Phase II. System fabrication. Final report October 1, 1979-May 31, 1981  

DOE Green Energy (OSTI)

The system plans, construction, integration and test, and performance evaluation are discussed for the photovoltaic power supply at the Newman Power Station in El Paso, Texas. The system consists of 64 parallel-connected panels, each panel containing nine series-connected photovoltaic modules. The system is connected, through power monitoring equipment, to an existing DC bus that supplies uninterruptible power to a computer that controls the power generating equipment. The site is described and possible environmental hazards are assessed. Site preparation and the installation of the photovoltaic panels, electrical cabling, and instrumentation subsystems are described. System testing includes initial system checkout, module performance test, control system test. A training program for operators and maintenance personnel is briefly described, including visual aids. Performance data collection and analysis are described, and actual data are compared with a computer simulation. System drawings are included. (LEW)

Risser, V.V.

1981-12-01T23:59:59.000Z

434

System aspects of a Space Nuclear Reactor Power System  

Science Conference Proceedings (OSTI)

Selected systems aspects of a 300 kW nuclear reactor power system for spacecraft have been studied. The approach included examination of two candidate missions and their associated spacecraft, and a number of special topics dealing with the power system design and operation. The missions considered were a reusable orbital transfer vehicle and a space-based radar. The special topics included: power system configuration and scaling, launch vehicle integration, operating altitude, orbital storage, start-up, thawing, control, load following, procedures in case of malfunction, restart, thermal and nuclear radiation to other portions of the spacecraft, thermal stresses between subsystems, boom and cable designs, vibration modes, altitude control, reliability, and survivability. Among the findings are that the stowed length of the power system is important to mission design and that orbital storage for months to years may be needed for missions involving orbital assembly. The power system design evolved during the study and has continued to evolve; the current design differs somewhat from that examined in this paper.

Jaffe, L.; Fujita, T.; Beatty, R.; Bhandari, P.; Chow, E.; Deininger, W.; Ewell, R.; Grossman, M.; Kia, T.; Nesmith, B.

1988-01-01T23:59:59.000Z

435

Nuclear Power  

E-Print Network (OSTI)

The world of the twenty first century is an energy consuming society. Due to increasing population and living standards, each year the world requires more energy and new efficient systems for delivering it. Furthermore, the new systems must be inherently safe and environmentally benign. These realities of today's world are among the reasons that lead to serious interest in deploying nuclear power as a sustainable energy source. Today's nuclear reactors are safe and highly efficient energy systems that offer electricity and a multitude of co-generation energy products ranging from potable water to heat for industrial applications. The goal of the book is to show the current state-of-the-art in the covered technical areas as well as to demonstrate how general engineering principles and methods can be applied to nuclear power systems.

Tsvetkov, Pavel

2010-08-01T23:59:59.000Z

436

Comparison of an impedance heating system to mineral insulated heat trace for power tower applications  

DOE Green Energy (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI heat trace. The authors found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1997-03-01T23:59:59.000Z

437

Power supply  

SciTech Connect

An electric power supply employs a striking means to initiate ferroelectric elements which provide electrical energy output which subsequently initiates an explosive charge which initiates a second ferroelectric current generator to deliver current to the coil of a magnetic field current generator, creating a magnetic field around the coil. Continued detonation effects compression of the magnetic field and subsequent generation and delivery of a large output current to appropriate output loads.

Hart, Edward J. (Albuquerque, NM); Leeman, James E. (Albuquerque, NM); MacDougall, Hugh R. (Albuquerque, NM); Marron, John J. (Albuquerque, NM); Smith, Calvin C. (Amarillo, TX)

1976-01-01T23:59:59.000Z

438

Power Search  

NLE Websites -- All DOE Office Websites (Extended Search)

You are here: Find a Car Home > Power Search You are here: Find a Car Home > Power Search Power Search Expand any feature by selecting its title bar. Choose as many or as few features as you like. Model Year From: 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 To: 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 MSRP Under $15,000 $15,000-$20,000 $20,000-$25,000 $25,000-$30,000 $30,000-$35,000 $35,000-$40,000 $40,000-$45,000 $45,000-$50,000 $50,000-$55,000 $55,000-$60,000 $60,000-$65,000 $65,000-$70,000 $70,000-$75,000 $75,000-$80,000 $80,000-$85,000 Over $85,000 - OR - Minimum: Select... $5,000 $6,000 $7,000 $8,000 $9,000 $10,000 $11,000

439

Power applications of high-temperature superconductivity: Variable speed motors, current switches, and energy storage for end use  

DOE Green Energy (OSTI)

The objective of this project is to conduct joint research and development activities related to certain electric power applications of high-temperature superconductivity (HTS). The new superconductors may allow development of an energy-efficient switch to control current to variable speed motors, superconducting magnetic energy storage (SMES) systems, and other power conversion equipment. Motor types that were considered include induction, permanent magnet, and superconducting ac motors. Because it is impractical to experimentally alter certain key design elements in radial-gap motors, experiments were conducted on an axial field superconducting motor prototype using 4 NbTi magnets. Superconducting magnetic energy storage technology with 0.25--5 kWh stored energy was studied as a viable solution to short duration voltage sag problems on the customer side of the electric meter. The technical performance characteristics of the device wee assembled, along with competing technologies such as active power line conditioners with storage, battery-based uninterruptible power supplies, and supercapacitors, and the market potential for SMES was defined. Four reports were prepared summarizing the results of the project.

Hawsey, R.A. [Oak Ridge National Lab., TN (United States); Banerjee, B.B.; Grant, P.M. [Electric Power Research Inst., Palo Alto, CA (United States)

1996-08-01T23:59:59.000Z

440

Inspection, Assessment, and Mitigation of Buried Steel Pipe Corrosion in Pipe-Type Cable Systems: Failure Initiation Mechanisms for Pritec Coating Systems  

Science Conference Proceedings (OSTI)

This report describes continuing work on a project on detecting and monitoring coating-system flaw development in pipe-type cable through novel methods of electrochemistry. In this phase of the project researchers conducted cathodic-disbondment tests on to evaluate cathodic-reaction products at pinholes or mechanically damaged areas and determine how well a coating adheres to the substrate at discontinuities. They also employed a wide variety of laboratory test methods to assess coating ...

2013-12-22T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Power-Efficient Data Management for a Wireless Structural Monitoring System  

E-Print Network (OSTI)

A low-cost wireless sensing unit for installation in structural monitoring systems is proposed. To eliminate the high cost of installing cables widely used in conventional systems, each wireless sensing unit includes wireless radios for reliable communication of response measurements. With wireless radios consuming large amounts of power, battery preservation can be achieved by limiting the use of the wireless channel. This study explores two approaches to reducing the power demands of the wireless sensing unit. First, embedded engineering analyses are carried out by the sensing units computational core to avoid transmission of long time-history records. Various engineering algorithms are encoded and executed using structural response data to illustrate the power saved in local data interrogation. Second, lossless data compression using Huffman coding is employed to reduce the size of data packets wirelessly transmitted.

J. P. Lynch; A. Sundararajan; K. H. Law; A. S. Kiremidjian; E. Carryer

2003-01-01T23:59:59.000Z

442

The AGS main magnet power supply upgrade  

SciTech Connect

The AGS Main Magnet Power Supply consists of a group of thyristor controlled power converters that operate from full rectify to full invert. In order to minimize ripple during the critical periods of injection and extraction 24 pulse converters are used for these portions of the cycle. The maximum voltage available in this mode is nominally 2,000 volts. The converters that are functional during this portion of the cycle are called the flat-top bank or ``F`` bank modules. During acceleration and invert where voltages of up to 12,000 volts are needed and where the ripple requirements are less stringent, groups of twelve pulse converters are operational. These converters are called the Pulsed bank or ``P`` bank modules. The original controlled rectifier system consisted of 96 large mercury filled excitron tubes divided equally between the P bank and F bank converters. These devices were extremely durable and ran successfully for over twenty years. It was, decided to replace the excitron farm with multiple arrangements of three-phase, full-wave, bridge modules that utilize silicon controlled rectifiers (SCR`s or thyristors) as the switching element. In order to match the existing transformer connections and buswork, eight identical modules were required; four for the P bank system and four for the F bank system. In order to reduce noise pickup and provide electrical isolation the high level SCR gate triggers are provided via fiberoptic cable. The status of various parameters such as water flow, auxiliary power supply performance, trigger circuitry failure, over voltage, overcurrent, and loss of phase reference are monitored via a programmable logic controller (PLCs). The PLCs use isolated input and output modules for various voltage levels from TTL to 150 Vdc to 125 Vac. These devices are extremely flexible and have allowed modifications and improvements that have enhanced the performance over any equivalent hard wired system.

Sandberg, J.N.; Casella, R.; Geller, J.; Marneris, I.; Soukas, A.; Schumburg, N.

1995-05-01T23:59:59.000Z

443

Microsoft PowerPoint - LTHFSW-presentation-121104.pptx  

NLE Websites -- All DOE Office Websites (Extended Search)

Construction and test results of Construction and test results of Construction and test results of Construction and test results of kapton kapton insulated 2G HTS insulated 2G HTS cos cosθ θ θ θ θ θ θ θ coil coil L. S. Lakshmi , E. Willen , R. C. Gupta L.S. Lakshmi Slide No. 1 LT LTHF HFSW12 SW12 Napa, CA, November 6, 2012 Brookhaven Brookhaven National National Laboratory, Upton Laboratory, Upton, New , New York York- -11973 11973 Particle Beam Lasers Inc., Northridge, California Particle Beam Lasers Inc., Northridge, California - -91324 91324 L. S. Lakshmi , E. Willen , R. C. Gupta Superconducting Magnet Division * Technical Objective * Conductor details * Coil geometry, winding and testing * Test results * Summary and Future plan Presentation outline Presentation outline using 2G HTS conductor L.S. Lakshmi Slide No. 2

444

Literature review of environmental qualification of safety-related electric cables: Literature analysis and appendices. Volume 2  

Science Conference Proceedings (OSTI)

In support of the US NRC Environmental Qualification (EQ) Research Program, a literature review was performed to identify past relevant work that could be used to help fully or partially resolve issues of interest related to the qualification of low-voltage electric cable. A summary of the literature reviewed is documented in Volume 1 of this report. In this, Volume 2 of the report, dossiers are presented which document the issues selected for investigation in this program, along with recommendations for future work to resolve the issues, when necessary. The dossiers are based on an analysis of the literature reviewed, as well as expert opinions. This analysis includes a critical review of the information available from past and ongoing work in thirteen specific areas related to EQ. The analysis for each area focuses on one or more questions which must be answered to consider a particular issue resolved. Results of the analysis are presented, along with recommendations for future work. The analysis is documented in the form of a dossier for each of the areas analyzed.

Lofaro, R.; Bowerman, B.; Carbonaro, J. [Brookhaven National Lab., Upton, NY (United States)] [and others

1996-04-01T23:59:59.000Z

445

Coaxial 30 kV Connectors for the RG220/U Cable 20 Years of Operational Experience  

E-Print Network (OSTI)

For the fast pulsed magnet system of CERN's SPS and LEP particle accelerators, a special type of moulded coaxial high voltage cable connector is used in large quantities. These connectors are mounted on coaxial transmission lines, which connect pulse generators in buildings at ground level to the fast pulsed magnets situated in an underground tunnel. Well over 1500 such connectors have already been installed and many more will be needed for the construction of the LHC. This 14 TeV Large Hadron Collider, which has a circumference of 27 km, is now under construction at CERN. The paper summarizes the operational experience over the last 20 years and the design principles of the connector. It explains how the excellent reliability and the extremely low failure rate were achieved and outlines the causes of the rare replacements. The paper also discusses the ageing effects caused by radiation, as well as wear and tear during installation and manipulation. Finally it gives a report on our experience with coaxial con...

Mayer, M

2000-01-01T23:59:59.000Z

446

Low Power Design Low PowerLow Power  

E-Print Network (OSTI)

, correlations among system state transitions #12;Low Power Design USC/LPCAD Page 11 USCUSC Low PowerLow Power for the requestsIncoming rates for the requests 21,rr 12 ,rr, :, : State transition ratesState transition rates OS and hardware Abstract, hierarchical finite-state machine Each state represents power

Pedram, Massoud

447

Response of the SPND measurement system to temperature during the Three Mile Island Unit 2 accident. [Self-Powered Neutron Detector  

SciTech Connect

The Self-Powered Neutron Detector (SPND) Measuring System is evaluated to determine its ability to indicate temperatures of the fuel rods in the TMI-2 reactor core during the accident. It is concluded for the following reasons that the SPND Measuring System did not provide fuel rod temperatures during the accident: the heat transfer characteristics vary over a range of five octaves; within the range of 1200 to 1800/sup 0/F, the SPND responds to temperature from convection radiation from the fuel rods and self-heating from the gamma flux; within the range of 1200 to 1800/sup 0/F, the signal cable introduces masking signals that are a function of gamma heating, integrated temperature over the cable, and core water level velocity; the data system's worst-case signal-to-noise ratio from aliasing is 0dB; and the recorder system's worst-case signal-to-noise ratio from aliasing is -24dB.

Wilde, N.; Morrison, J.L. Jr.

1981-12-01T23:59:59.000Z

448

MHK Technologies/Vert Network Power Station | Open Energy Information  

Open Energy Info (EERE)

Network Power Station Network Power Station < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Vert Network Power Station.jpg Technology Profile Primary Organization Vert Labs LLP Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Vert Network is 1st cost effective wave power system that brings profit with the current level of pricing for renewable electricity The technology of Vert Network is based on an array of plastic floats that produce compressed air from the torque that is created from levers attached to the floats The compressed air is then sent to the shore by rubber pipe which is significantly cheaper and easier to maintain than underwater copper cables Consequently the generation is done on land using a standard turbine generator rather than requiring highly bespoke and overly robust generation devices which have to be specially designed for the marine environment and require specialist skills to maintain The marine based device is therefore made entirely from plastic carbon fibre and rubber so all the components are made from standard materials using mouldings and can be produced very cheaply VERT Labs estimates show that it can provide electricity at about 0 10 kWh When VERT Labs reache

449

Power management system  

DOE Patents (OSTI)

A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the enabled power sources. A total power load placed on the electrical system by one or more power consumers may be measured. If the total power load exceeds the threshold power value, then a determination may be made as to whether one or more additional power sources is available from among the plurality of power sources. At least one of the one or more additional power sources may be enabled, if available.

Algrain, Marcelo C. (Peoria, IL); Johnson, Kris W. (Washington, IL); Akasam, Sivaprasad (Peoria, IL); Hoff, Brian D. (East Peoria, IL)

2007-10-02T23:59:59.000Z

450

Solar powered desalination system  

E-Print Network (OSTI)

1.13: California Power Generation by Source31for hydro- electric power generation would be reached inother end users include the power generation industry (4%),

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

451

Solar powered desalination system  

E-Print Network (OSTI)

2008, uses concentrated solar power to split water. Figurethe main reason the potential for solar power is boundless.a clean energy source, solar power is inexhaustible, fairly

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

452

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

POTC Home Courses Instructors NERC Continuing Education Virtual University Power Operations Training Center You'll find the "Power" of learning at Southwestern's Power Operations...

453

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Schedules Skip Navigation Links Excess Energy Hydro Peaking Power Hydro Power and Energy Sold to Sam Rayburn Dam Electric Cooperative (Rayburn) Hydro Power and Energy Sold to Sam...

454

Hybrid-Intelligent POWER HI-POWER  

Science Conference Proceedings (OSTI)

... T T T A A A SMART-T Current Situation Current Situation ... Page 10. 22 Power Grid Plug & Play architecture Multiple power sources Renewables ...

2013-09-22T23:59:59.000Z

455

Power oscillator  

DOE Patents (OSTI)

An oscillator includes an amplifier having an input and an output, and an impedance transformation network connected between the input of the amplifier and the output of the amplifier, wherein the impedance transformation network is configured to provide suitable positive feedback from the output of the amplifier to the input of the amplifier to initiate and sustain an oscillating condition, and wherein the impedance transformation network is configured to protect the input of the amplifier from a destructive feedback signal. One example of the oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to match the driving frequency of the oscillator to a plurality of tuning states of the lamp.

Gitsevich, Aleksandr (Montgomery Village, MD)

2001-01-01T23:59:59.000Z

456

POWER REACTOR  

DOE Patents (OSTI)

A fast nuclear reactor system ls described for producing power and radioactive isotopes. The reactor core is of the heterogeneous, fluid sealed type comprised of vertically arranged elongated tubular fuel elements having vertical coolant passages. The active portion is surrounded by a neutron reflector and a shield. The system includes pumps and heat exchangers for the primary and secondary coolant circuits. The core, primary coolant pump and primary heat exchanger are disposed within an irapenforate tank which is filled with the primary coolant, in this case a liquid metal such as Na or NaK, to completely submerge these elements. The tank is completely surrounded by a thick walled concrete shield. This reactor system utilizes enriched uranium or plutonium as the fissionable material, uranium or thorium as a diluent and thorium or uranium containing less than 0 7% of the U/sup 235/ isotope as a fertile material.

Zinn, W.H.

1958-07-01T23:59:59.000Z

457

Power plant  

SciTech Connect

A two stroke internal combustion engine is described that has at least one cylinder within which a piston reciprocates. The engine is joined to a gearbox which includes a ring gear. A pair of gears having diameters half that of the ring gear move within the latter. At least one of the pair of gears is connected to a piston by a pin extending between the piston and the periphery of said gear. An additional pair of gears are fixed to respective ones of the first-mentioned gear pair and are operatively joined to a pinion to which a drive shaft is secured. A turbine and filter arrangement is positioned on the side of the engine opposite the gearbox whereby exhaust gases from the engine are directed to the turbine to develop power at an output drive shaft joined to the turbine and to filter pollutants from the gases.

Finn, H.I. Jr.

1978-10-24T23:59:59.000Z

458

Electric Power Annual  

U.S. Energy Information Administration (EIA)

Electric Power Sector ; Period Total (all sectors) Electric Utilities Independent Power Producers Commercial Sector Industrial Sector; Annual Totals: ...

459

Electric Power Metrology Portal  

Science Conference Proceedings (OSTI)

... Electric Power Metrology and the Smart Grid Our country's way of life depends on the electric power distribution system. ...

2012-12-26T23:59:59.000Z

460

Putting Economic Power in Distributed Power  

Reports and Publications (EIA)

Electric Power Research Institute's Distributed Resources Week 1997 (October 22, 1997)AUTHOR: John Herbert

Information Center

1997-10-22T23:59:59.000Z

Note: This page contains sample records for the topic "hts power cable" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Increased Power Flow Wizard (IPFWiz) 2.2  

Science Conference Proceedings (OSTI)

IPF Wizard 2.2 ranks uprating methods for existing overhead lines, substation strain bus, and underground cables. IPF Wizard 2.2 presents the design engineer or system planning engineer with ranked lists of uprating methods for existing overhead lines and underground cables. The user supplies answers to basic questions regarding the original line/cable design, the present physical state of the line, and the planning goals for the line uprating. The IPF Wizard will provide recommendations regarding uprati...

2011-11-23T23:59:59.000Z

462

Review of Brookhaven National Laboratory superconducting power transmission program  

SciTech Connect

ABS>Research is being conducted at Brookhaven National Laboratory to develop a superconducting ac cable system leading to the construction of a 1/2 mile model cable of 200 MVA capacity at Brookhaven and a cable of larger (>2000 MVA) capacity for test at a utility testing site. It is a coaxial cable of flexible design using Nb/sub 3/Sn superconductor, and a tape wound dielectric, helium impregnated, of a material yet to be determined. The research development is reported on the dielectric materials, cryogenic enclosure, refrigeration, and superconducting materials. (MCW)

Jensen, J.E.

1973-10-11T23:59:59.000Z

463

Power-Pro: Programmable Power Management Architecture  

E-Print Network (OSTI)

This paper presents Power-Pro architecture (Programmable Power Management Architecture), a novel processor architecture for power reduction. Power-Pro architecture has following two functionalities, (i) Supply voltage and clock frequency can be dynamically varied, (ii) Active data-path width can be dynamically adjusted to requirement of application programs. For the application programs which require less performance or less data-path width, Power-Pro architecture realize dramatic power reduction. I. Introduction With recent popularizations in portable, batterypowered devices such as digital cellular telephones and personal digital assistants, minimizing power consumption of VLSI circuits becomes more important. As the system level power reduction techniques, the choice of optimal supply voltage(V DD ) and optimal active data-path width have strong impacts. In this paper we propose novel processor architecture Power-Pro [2] which can vary VDD and active data-path width of processor ...

Tohru Ishihara; Hiroto Yasuura; Programmable Power Management

1998-01-01T23:59:59.000Z

464

Electric power 2007  

SciTech Connect

Subjects covered include: power industry trends - near term fuel strategies - price/quality/delivery/opportunity; generating fleet optimization and plant optimization; power plant safety and security; coal power plants - upgrades and new capacity; IGCC, advanced combustion and CO{sub 2} capture technologies; gas turbine and combined cycle power plants; nuclear power; renewable power; plant operations and maintenance; power plant components - design and operation; environmental; regulatory issues, strategies and technologies; and advanced energy strategies and technologies. The presentations are in pdf format.

NONE

2007-07-01T23:59:59.000Z

465

SOLAR POWER  

DOE Green Energy (OSTI)

Thermal energy storage (TES) is an integral part of a concentrated solar power (CSP) system. It enables plant operators to generate electricity beyond on sun hours and supply power to the grid to meet peak demand. Current CSP sensible heat storage systems employ molten salts as both the heat transfer fluid and the heat storage media. These systems have an upper operating temperature limit of around 400 C. Future TES systems are expected to operate at temperatures between 600 C to 1000 C for higher thermal efficiencies which should result in lower electricity cost. To meet future operating temperature and electricity cost requirements, a TES concept utilizing thermochemical cycles (TCs) based on multivalent solid oxides was proposed. The system employs a pair of reduction and oxidation (REDOX) reactions to store and release heat. In the storage step, hot air from the solar receiver is used to reduce the oxidation state of an oxide cation, e.g. Fe3+ to Fe2+. Heat energy is thus stored as chemical bonds and the oxide is charged. To discharge the stored energy, the reduced oxide is re-oxidized in air and heat is released. Air is used as both the heat transfer fluid and reactant and no storage of fluid is needed. This project investigated the engineering and economic feasibility of this proposed TES concept. The DOE storage cost and LCOE targets are $15/kWh and $0.09/kWh respectively. Sixteen pure oxide cycles were identified through thermodynamic calculations and literature information. Data showed the kinetics of re-oxidation of the various oxides to be a key barrier to implementing the proposed concept. A down selection was carried out based on operating temperature, materials costs and preliminary laboratory measurements. Cobalt oxide, manganese oxide and barium oxide were selected for developmental studies to improve their REDOX reaction kinetics. A novel approach utilizing mixed oxides to improve the REDOX kinetics of the selected oxides was proposed. It partially replaces some of the primary oxide cations with selected secondary cations. This causes a lattice charge imbalance and increases the anion vacancy density. Such vacancies enhance the ionic mass transport and lead to faster re-oxidation. Reoxidation fractions of Mn3O4 to Mn2O3 and CoO to Co3O4 were improved by up to 16 fold through the addition of a secondary oxide. However, no improvement was obtained in barium based mixed oxides. In addition to enhancing the short term re-oxidation kinetics, it was found that the use of mixed oxides also help to stabilize or even improve the TES properties after long term thermal cycling. Part of this improvement could be attributed to a reduced grain size in the mixed oxides. Based on the measurement results, manganese-iron, cobalt-aluminum and cobalt iron mixed oxides have been proposed for future engineering scale demonstration. Using the cobalt and manganese mixed oxides, we were able to demonstrate charge and discharge of the TES media in both a bench top fixed bed and a rotary kiln-moving bed reactor. Operations of the fixed bed configuration are straight forward but require a large mass flow rate and higher fluid temperature for charging. The rotary kiln makes direct solar irradiation possible and provides significantly better heat transfer, but designs to transport the TES oxide in and out of the reactor will need to be defined. The final reactor and system design will have to be based on the economics of the CSP plant. A materials compatibility study was also conducted and it identified Inconel 625 as a suitable high temperature engineering material to construct a reactor holding either cobalt or manganese mixed oxides. To assess the economics of such a CSP plant, a packed bed reactor model was established as a baseline. Measured cobalt-aluminum oxide reaction kinetics were applied to the model and the influences of bed properties and process parameters on the overall system design were investigated. The optimal TES system design was found to be a network of eight fixed bed reactors at 18.75 MWth each with charge and

PROJECT STAFF

2011-10-31T23:59:59.000Z

466

Prospects for the medium- and long-term development of China`s electric power industry and analysis of the potential market for superconductivity technology  

Science Conference Proceedings (OSTI)

First of all, overall economic growth objectives in China are concisely and succinctly specified in this report. Secondly, this report presents a forecast of energy supply and demand for China`s economic growth for 2000--2050. In comparison with the capability of energy construction in China in the future, a gap between supply and demand is one of the important factors hindering the sustainable development of Chain`s economy. The electric power industry is one of China`s most important industries. To adopt energy efficiency through high technology and utilizing energy adequately is an important technological policy for the development of China`s electric power industry in the future. After briefly describing the achievements of China`s electric power industry, this report defines the target areas and policies for the development of hydroelectricity and nuclear electricity in the 2000s in China, presents the strategic position of China`s electric power industry as well as objectives and relevant plans of development for 2000--2050. This report finds that with the discovery of superconducting electricity, the discovery of new high-temperature superconducting (HTS) materials, and progress in materials techniques, the 21st century will be an era of superconductivity. Applications of superconductivity in the energy field, such as superconducting storage, superconducting transmission, superconducting transformers, superconducting motors, its application in Magneto-Hydro-Dynamics (MHD), as well as in nuclear fusion, has unique advantages. Its market prospects are quite promising. 12 figs.

Li, Z. [Bob Lawrence and Associates, Inc., Alexandria, VA (United States)

1998-05-01T23:59:59.000Z

467

Power Tower Systems for Concentrating Solar Power  

Energy.gov (U.S. Department of Energy (DOE))

In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid...

468

Resonant Power Conditioning and Compact Pulse Power ...  

Science Conference Proceedings (OSTI)

... (FEEDBACK) HV RECTIFIER AND FILTER NETWORK ... Los Alamos High Frequency Polyphase Resonant Power Conditioning ... 30 KW Loss ...

2012-10-31T23:59:59.000Z

469

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Webbers Falls Major Rehab Webbers Falls Major Rehab Webbers Falls Major Rehab BUILDING STRONG ® 6/8/2010 2 Plant Cross Section Plant Cross Section BUILDING STRONG ® Project Cost and Scope Project Cost and Scope *Current Cost: $72.7M *Current Completion Date: Jun 2012 *Rehab 2 Bridge Cranes *Rehab 2 Gantry Cranes *Rewind 3 Generators *Install New 13.8KV Breakers and Buss *Repair Misc Mechanical & Electrical Items BUILDING STRONG ® Project Funding Project Funding *Project was 100% funded through customer funding until FY09 ARRA funds were received. ARRA funds now being used for, gantry cranes, breakers, cables and distribution panels. *To date customer funds in the amount of $67.9M have been provided for this project. BUILDING STRONG ® Total Cost Breakdown Total Cost Breakdown

470

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of DOE's of DOE's National Recycling Policies Impacts on Portsmouth of Potential Changes to DOE Policies EM SSAB NATIONAL CHAIRS MEETING Deer Creek State Park, Mt. Sterling, Ohio November 5-7, 2013 Jeremy Harley, PE Subject Matter Expert, Portsmouth Gaseous Diffusion Plant EM SSAB NATIONAL CHAIRS MEETING Deer Creek State Park, Mt. Sterling, Ohio November 5-7, 2013 Potential for reuse? Towers Process Motors Transformers Switchgear Cable 1,740 motors 10,000 tons 190 miles 2,000 tons Mixed steel, copper, aluminum 50,000 tons 5,000+ tons Transformers 8,000 tons Potential For Recycle? EM SSAB NATIONAL CHAIRS MEETING Deer Creek State Park, Mt. Sterling, Ohio November 5-7, 2013 Structural Steel 225,000 tons Potential For Recycle? EM SSAB NATIONAL CHAIRS MEETING