Sample records for overhead power lines

  1. Transmission Channel Model and Capacity of Overhead Multi-conductor Medium-Voltage Power-lines for Broadband Communications

    E-Print Network [OSTI]

    Kavehrad, Mohsen

    Transmission Channel Model and Capacity of Overhead Multi-conductor Medium-Voltage Power-lines signal transmission, power-line has many non-ideal properties as a communications medium. Impedance-voltage power distribution networks for broadband power-line communications applications. Keywords - channel

  2. The Reliability Investigation on ACSR Splice Connector Systems Used in Overhead Power transmission Lines

    SciTech Connect (OSTI)

    Wang, Jy-An John [ORNL] [ORNL; Jiang, Hao [ORNL] [ORNL; Ren, Fei [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    Due to material discontinuity and inherited forming mechanism from a crimped-type splice connector, the associated conductor-connector system is highly sensitive to system components aging, especially during high-temperature operations. Furthermore, due to the increase in power demand and limited investment in new infrastructure, existing overhead power transmission lines often need to operate at temperatures higher than the original designed values. This has led to the accelerated aging and degradation of conductor-connector systems. The implications of connector aging are two-fold: (1) significant increase in resistivity of the splice connector and (2) significant reduction in the connector clamping strength. Therefore, splice connectors are one of the weakest links in the electric power transmission infrastructure. In this paper we will discuss the reliability of splice connector systems, including both single stage and two stage splice connectors, used in ACSR conductor of transmission lines under high temperature operations.

  3. Overhead electric power transmission line jumpering system for bundles of five or more subconductors

    DOE Patents [OSTI]

    Winkelman, Paul F. (Beaverton, OR)

    1982-01-01T23:59:59.000Z

    Jumpering of electric power transmission lines at a dead end tower. Two transmission line conductor bundles each contain five or more spaced apart subconductors (5) arranged in the shape of a cylinder having a circular cross section. The ends of each bundle of subconductors are attached with insulators to a dead end tower (1). Jumpering allows the electric current to flow between the two bundles of subconductors using jumper buses, internal jumper conductors, and external jumper conductors. One or more current collecting jumper buses (37) are located inside each bundle of subconductors with each jumper bus being attached to the end of a subconductor. Small-diameter internal jumper conductors (33) are located in the inherently electrically shielded area inside each bundle of subconductors with each subconductor (except ones having an attached jumper bus) having one internal jumper conductor connected between that subconductor's end and a jumper bus. Large-diameter external jumper conductors (9) are located outside each bundle of subconductors with one or more external jumper conductors being connected between the jumper buses in one bundle of subconductors and the jumper buses in the other bundle.

  4. The HEMP (high altitude electromagnetic pulse) response of an overhead power distribution line

    SciTech Connect (OSTI)

    Tesche, F.M.; Barnes, P.R.

    1988-01-01T23:59:59.000Z

    A study of the HEMP response of a realistic power distribution system was undertaken, and its results are described in this paper. This study involved the following elements: (1) the use of the new HEMP environment, (2) the use of a multiconductor coupling model, and (3) the measurement of the pulse response of an actual distribution transformer to permit the use of this data in the analysis.

  5. Design concepts for a pulse power test facility to simulate EMP surges in overhead power lines. Part I. Fast pulse

    SciTech Connect (OSTI)

    Ramrus, A.

    1986-02-01T23:59:59.000Z

    Objective of the study was to create conceptual designs of high voltage pulsers capable of simulating two types of electromagnetic pulses (EMPs) caused by a high-altitude nuclear burst; the slow rise time magnetohydrodynamic (MHD-EMP) and the fast rise time high-altitude EMP (HEMP). The pulser design was directed towards facilities capable of performing EMP vulnerability testing of components used in the national electric power system.

  6. Nonlinear Free Vibrations of Coupled Spans of Overhead Transmission Lines

    E-Print Network [OSTI]

    Rienstra, Sjoerd W.

    -elastic instability is known as galloping [1­5]. For high enough amplitudes neighbouring conductors may get close of the phenomenon of galloping, which is a high amplitude periodic oscillation of overhead transmission lines due for galloping control. 1 Introduction Overhead transmission lines for transport of high-voltage electricity

  7. Vibration damping required for overhead lines

    SciTech Connect (OSTI)

    Richardson, A.S. Jr. [Research Consulting Associates, Lexington, MA (United States)] [Research Consulting Associates, Lexington, MA (United States)

    1995-04-01T23:59:59.000Z

    Transmission line engineers have sought an easy method for evaluating if external dampers are required on any new transmission line. In the past this question has been given to the damper manufacturer who has a vested interest in a affirmative answer. For single conductors (and for bundled conductors) the vibration level of a power line conductor is the result of a complicated aerodynamic process in which energy is taken into the motion from vortex action on the lee side of the conductor. The amount of energy taken in is a non-linear function of vibration amplitude, frequency, conductor diameter, and wind speed. The amount of energy taken out is a non-linear function of vibration amplitude, frequency, conductor mass, conductor tension, and a certain friction constant that varies from conductor to conductor. It is known that a small amount of vibration is allowed without endangering the conductor. This has been called the IEEE limit loop velocity, and is numerically equal to 200 mm/second. This paper explains a simple procedure, applicable to single conductors, which calculates a comparison of energy in vs. energy out. From this process it is shown how to select the initial tension in the conductor so that no external dampers are required.

  8. Free Vibrations of Coupled Spans of Overhead Transmission Lines

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    be interesting for galloping control. 1 Introduction Overhead transmission lines for transport of high, and maintained by cross wind. This aero­elastic instability is known as galloping [1, 2, 3, 4, 5]. For high enough amplitudes neighbouring conductors may touch each other and cause short circuit and structural

  9. Electrical and mechanical design criteria for EHV and UHV: overhead transmission lines

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    The results are presented of a program devoted to the selection of electrical and mechanical design criteria and parameters for overhead power transmission lines for ac systems rated at from 345 to 1100 kV and for dc systems rated at from 600 to 1200 kV. Information is included on the environmental effects, i.e., audible noise and electric fields, of the lines, mechanical and economic requirements, safety, failures, grounding, and lightning protection. (LCL)

  10. Early-Time Behavior of the Ground Transient Resistance of Overhead Lines

    E-Print Network [OSTI]

    Loyka, Sergey

    contribution to the transient response of overhead transmission lines. While the late-time behaviour. This expression can be used for the transient analysis of transmission lines in a computationally efficient way of overhead transmission lines to external disturbances like lightning discharges [1, 2]. This impedance

  11. Evaluation of Instrumentation and Dynamic Thermal Ratings for Overhead Lines

    SciTech Connect (OSTI)

    Phillips, A.

    2013-01-31T23:59:59.000Z

    In 2010, a project was initiated through a partnership between the Department of Energy (DOE) and the New York Power Authority (NYPA) to evaluate EPRI?s rating technology and instrumentation that can be used to monitor the thermal states of transmission lines and provide the required real-time data for real-time rating calculations. The project included the installation and maintenance of various instruments at three 230 kV line sites in northern New York. The instruments were monitored, and data collection and rating calculations were performed for about a three year period.

  12. A new expression for the ground transient resistance matrix elements of multiconductor overhead transmission lines

    E-Print Network [OSTI]

    Loyka, Sergey

    transmission lines F. Rachidi a, *, S.L. Loyka b , C.A. Nucci c , M. Ianoz a a Swiss Federal Institute The ground impedance matrix elements of a multiconductor overhead transmission line do not have analytical-singular, and which describe, within the limits of transmission line theory, both the early-time and late

  13. Trees and Power Lines: Minimizing Conflicts between Electric Power

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Trees and Power Lines: Minimizing Conflicts between Electric Power Infrastructure and the Urban: Minimizing Conflicts between Electric Power Infrastructure and the Urban Forest ISSUE BRIEF | March 2012 1: Minimizing Conflicts between Electric Power Infrastructure and the Urban Forest 1 Trees and overhead power

  14. Proceedings of the Inspection and Assessment of Overhead Transmission Line Equipment Workshop: 13-15 May 2003, Monterey, CA

    SciTech Connect (OSTI)

    None

    2003-10-01T23:59:59.000Z

    This report contains papers and materials presented at the Inspection and Assessment of Overhead Transmission Line Equipment Workshop held in Monterey, California in May of 2003.

  15. Increasing the reliability of the shutdown of 500 - 750-kV overhead lines equipped with shunt reactors in an unsuccessful three-phase automatic repeated closure cycle

    SciTech Connect (OSTI)

    Kuz'micheva, K. I.; Merzlyakov, A. S.; Fokin, G. G. [JSC 'R and D Center at Federal Grid Company of the United Power System' (Russian Federation)

    2013-05-15T23:59:59.000Z

    The reasons for circuit-breaker failures during repeated disconnection of 500 - 750 kV overhead lines with shunt reactors in a cycle of unsuccessful three-phase automatic reconnection (TARC) are analyzed. Recommendations are made for increasing the operating reliability of power transmission lines with shunt reactors when there is unsuccessful reconnection.

  16. Nondestructive Testing of Overhead Transmission Lines: Numerical and Experimental Investigation

    E-Print Network [OSTI]

    Kulkarni, Salil Subhash

    2011-02-22T23:59:59.000Z

    line is the primary reason for absence of a theoretical solution to get the analytical dispersion curves. The numerical results are then verified with experimental tests using a non-contact and broadband laser detection technique. The methodology...

  17. Oscillation of bundle conductors in overhead lines due to turbulent wind

    SciTech Connect (OSTI)

    Diana, G.; Cheli, F. (Politecnico di Milano, Milano (IT)); Manenti, A. (Universita degli Studi di Brescia, Brescia (IT)); Nicolini, P.; Tavano, F. (ENEL/CREI, Milano (IT))

    1990-10-01T23:59:59.000Z

    Due to the wind, the bundle conductors in overhead lines can oscillate and the distance between the phases can be reduced. This kind of movement may be caused by: non expansive oscillations of the phases due to the wind turbulence and to the correlated variations of the bundles aerodynamic coefficients during the movement (buffeting); expansive oscillations, or galloping, of the phases due to the unstable aerodynamic shapes that bundles may assume in presence of ice. This paper presents an analytical methodology to examine the dynamic behaviour of bundles subjected to the above mentioned phenomena. The results obtained during experiments carried out on a span of an energized 420-kV line equipped with triple bundles and subjected to oscillations due to buffeting are exposed. Lastly, the experimental data are compared with the analytical results.

  18. Meteorological conditions associated with the full-span galloping oscillations of overhead transmission lines

    E-Print Network [OSTI]

    Hunt, Julian

    -span galloping of bundled conductors, and it was not possible to assess how close the critical wind speedMeteorological conditions associated with the full-span galloping oscillations of overhead,Wind ABSTRACT The recorded phase-to-phase faults associated with the full-span galloping of CEGB overhead

  19. Power line detection system

    DOE Patents [OSTI]

    Latorre, V.R.; Watwood, D.B.

    1994-09-27T23:59:59.000Z

    A short-range, radio frequency (RF) transmitting-receiving system that provides both visual and audio warnings to the pilot of a helicopter or light aircraft of an up-coming power transmission line complex. Small, milliwatt-level narrowband transmitters, powered by the transmission line itself, are installed on top of selected transmission line support towers or within existing warning balls, and provide a continuous RF signal to approaching aircraft. The on-board receiver can be either a separate unit or a portion of the existing avionics, and can also share an existing antenna with another airborne system. Upon receipt of a warning signal, the receiver will trigger a visual and an audio alarm to alert the pilot to the potential power line hazard. 4 figs.

  20. Power line detection system

    DOE Patents [OSTI]

    Latorre, Victor R. (Tracy, CA); Watwood, Donald B. (Tracy, CA)

    1994-01-01T23:59:59.000Z

    A short-range, radio frequency (RF) transmitting-receiving system that provides both visual and audio warnings to the pilot of a helicopter or light aircraft of an up-coming power transmission line complex. Small, milliwatt-level narrowband transmitters, powered by the transmission line itself, are installed on top of selected transmission line support towers or within existing warning balls, and provide a continuous RF signal to approaching aircraft. The on-board receiver can be either a separate unit or a portion of the existing avionics, and can also share an existing antenna with another airborne system. Upon receipt of a warning signal, the receiver will trigger a visual and an audio alarm to alert the pilot to the potential power line hazard.

  1. IMPEE PhD Opportunity Project title: LightFoot PhD A PhD Investigation Lightning Protection of HV Overhead Lines with Non-Ideal

    E-Print Network [OSTI]

    Greenaway, Alan

    IMPEE PhD Opportunity Project title: LightFoot PhD ­ A PhD Investigation Lightning Protection of HV.swingler@hw.ac.uk Abstract LightFoot PhD ­ A PhD Investigation Lightning Protection of HV Overhead Lines with Non-Ideal Tower Footing Resistance funded by SSE. The LightFoot PhD project takes a fresh approach at adding

  2. Modeling the Effect of Hurricanes on Power Distribution Systems

    E-Print Network [OSTI]

    Chanda, Suraj

    2012-10-19T23:59:59.000Z

    : : : : : : : : : : : : : : : : : 9 III Conductor sizing in Micropolis : : : : : : : : : : : : : : : : : : : : : 24 IV Sequence impedance and capacitance values for three phase single circuit overhead lines : : : : : : : : : : : : : : : : : : : : : : : : : : : 28 V Resistance... : : : : : : : : 19 8 Fragility curve showing number of industries losing power for a given wind speed in the absence of routing : : : : : : : : : : : : : : : 20 9 Three phase single circuit overhead line conductor con guration : : : 25 10 Single phase overhead...

  3. Ames Lab 101: Next Generation Power Lines

    ScienceCinema (OSTI)

    Russell, Alan

    2012-08-29T23:59:59.000Z

    Ames Laboratory scientist Alan Russell discusses the need to develop new power lines that are stronger and more conductive as a way to address the problem of the nation's aging and inadequate power grid.

  4. Ames Lab 101: Next Generation Power Lines

    SciTech Connect (OSTI)

    Russell, Alan

    2010-01-01T23:59:59.000Z

    Ames Laboratory scientist Alan Russell discusses the need to develop new power lines that are stronger and more conductive as a way to address the problem of the nation's aging and inadequate power grid.

  5. Development of NS-TACSR with extremely suppressed aeolian noise and its application to 500 kV overhead transmission lines

    SciTech Connect (OSTI)

    Tsujimoto, K.; Furukawa, S. (Kansai Electric Power Co., Inc., Osaka (Japan)); Shimojima, K.; Yamamoto, K. (Hitachi Cable, Ltd., Hitachi (JP))

    1991-10-01T23:59:59.000Z

    Recently in Japan, with the unprecedented advance of residential area development in the suburbs of large cities, it has become quite difficult to secure the routes of EHV transmission lines from nuclear power plants in remote places to the suburbs of large cities, urging resolution of environmental problems related to transmission lines. In Japan, aerodynamic sound produced by conductors and insulators frequently caused noise problems. Having an opportunity of constructing a 500 kV transmission line through a residential are, we made a research to resolve this noise problem. This paper describes the characteristics of aeolian noise and preventive measures against it.

  6. Community Trees Power Lines and Trees

    E-Print Network [OSTI]

    Koford, Rolf R.

    aesthetic and psychological benefits. Figure 2. Grown into a power pole. #12;become hazardous to peopleCommunity Trees Power Lines and Trees Introduction Trees serve many purposes in urban and rural, hundreds of people throughout the United States are injured or killed each year when they climb or prune

  7. EIS-0447: Champlain Hudson Power Express Transmission Line Project...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    47: Champlain Hudson Power Express Transmission Line Project, New York EIS-0447: Champlain Hudson Power Express Transmission Line Project, New York Summary This EIS evaluated the...

  8. Concurrent Wind Cooling in Power Transmission Lines

    SciTech Connect (OSTI)

    Jake P Gentle

    2012-08-01T23:59:59.000Z

    Idaho National Laboratory and the Idaho Power Company, with collaboration from Idaho State University, have been working on a project to monitor wind and other environmental data parameters along certain electrical transmission corridors. The combination of both real-time historical weather and environmental data is being used to model, validate, and recommend possibilities for dynamic operations of the transmission lines for power and energy carrying capacity. The planned results can also be used to influence decisions about proposed design criteria for or upgrades to certain sections of the transmission lines.

  9. INVESTIGATION OF A DYNAMIC POWER LINE RATING CONCEPT FOR IMPROVED WIND ENERGY INTEGRATION OVER COMPLEX TERRAIN

    SciTech Connect (OSTI)

    Jake P. Gentle; Kurt S Myers; Tyler B Phillips; Inanc Senocak; Phil Anderson

    2014-08-01T23:59:59.000Z

    Dynamic Line Rating (DLR) is a smart grid technology that allows the rating of power line to be based on real-time conductor temperature dependent on local weather conditions. In current practice overhead power lines are generally given a conservative rating based on worst case weather conditions. Using historical weather data collected over a test bed area, we demonstrate there is often additional transmission capacity not being utilized with the current static rating practice. We investigate a new dynamic line rating methodology using computational fluid dynamics (CFD) to determine wind conditions along transmission lines at dense intervals. Simulated results are used to determine conductor temperature by calculating the transient thermal response of the conductor under variable environmental conditions. In calculating the conductor temperature, we use both a calculation with steady-state assumption and a transient calculation. Under low wind conditions, steady-state assumption predicts higher conductor temperatures that could lead to curtailments, whereas transient calculations produce conductor temperatures that are significantly lower, implying the availability of additional transmission capacity.

  10. active power line: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modeling, System Brest, Universit de 8 Reference: RGL 83-09 Subject: POWER TRANSMISSION LINES Engineering Websites Summary: Reference: RGL 83-09 Subject: POWER TRANSMISSION...

  11. Minimizing Simultaneous Switching Noise at Reduced Power with Power Transmission Lines for

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Minimizing Simultaneous Switching Noise at Reduced Power with Power Transmission Lines for High] by replacing the power plane structure with a power transmission line (PTL). In this paper, a new power switching noise; power transmission line I. INTRODUCTION The rapid increase in data rates and transistor

  12. Reference: RGL 83-09 Subject: POWER TRANSMISSION LINES

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Reference: RGL 83-09 Subject: POWER TRANSMISSION LINES Title: MARKING OF AERIAL POWER TRANSMISSION. 1. The marking of aerial power transmission lines, cables, and structures over the navigable waters LINES, CABLES, & STRUCTURES Issued: 07/13/83 Expires: 12/31/85 Originator: DAEN-CWO-N Description: ARMY

  13. Electric power high-voltage transmission lines: Design options, cost, and electric and magnetic field levels

    SciTech Connect (OSTI)

    Stoffel, J.B.; Pentecost, E.D.; Roman, R.D.; Traczyk, P.A.

    1994-11-01T23:59:59.000Z

    This report provides background information about (1) the electric and magnetic fields (EMFs) of high-voltage transmission lines at typical voltages and line configurations and (2) typical transmission line costs to assist on alternatives in environmental documents. EMF strengths at 0 {+-} 200 ft from centerline were calculated for ac overhead lines, and for 345 and 230-kV ac underground line and for a {+-}450-kV dc overhead line. Compacting and height sensitivity factors were computed for the variation in EMFs when line conductors are moved closer or raised. Estimated costs for the lines are presented and discussed so that the impact of using alternative strategies for reducing EMF strengths and the implications of implementing the strategies can be better appreciated.

  14. Computing Criticality of Lines in Power Systems

    E-Print Network [OSTI]

    Pinar, Ali; Reichert, Adam; Lesieutre, Bernard

    2006-01-01T23:59:59.000Z

    sqopt snopt.html [8] “Power system test case archive. ” [IEEE Transactions on Power Systems, vol. 19, pp. [3] V.contingencies in electric power systems,” IEEE Transactions

  15. Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft F. Nemec,1,2 O. Santoli´k,3 January 2006; published 22 April 2006. [1] Results of a systematic survey of Power Line Harmonic Radiation from the electric power systems which are magnetically conjugated with the place of observation

  16. Power line harmonic radiation: A systematic study using DEMETER spacecraft

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation: A systematic study using DEMETER spacecraft F. Nemec a,b,*, O of a systematic survey of Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft. DEME- TER frequency spacing corresponds well to the power system frequency at anticipated source locations. Moreover

  17. ac power lines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    A FUNDAMENTAL characteristic construction of both generation facilities and new transmission lines, so better utilization of existing power Lehn, Peter W. 5 A new high performance...

  18. Multifrequency Wilkinson Power Divider Using Microstrip Nonuniform Transmission Lines

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Multifrequency Wilkinson Power Divider Using Microstrip Nonuniform Transmission Lines Mohammad desired frequencies. The proposed structure contains two Microstrip Nonuniform Transmission Lines (MNTLs­6] and using composite right/left-handed transmission line (CRLH) [7]. The main disadvantage of multistage

  19. On Line Power Plant Performance Monitoring

    E-Print Network [OSTI]

    Ahner, D. J.; Priestley, R. R.

    sponsored by the Electric Power Research Institute (EPRI), and the Potomac Electric Power Company (PEPCO). State of the art concepts i? instrumentation, performance calculations and models have been implemented on an advanced Performance Workstation... and ar l being evaluated and demonstrated at PEPCO's Morgantown pI nt. The results of this program and this workstation softw re are being made available to the power industry through EPRI nd Power Technologies, Inc. The software associated...

  20. Abstract--Power Line Communications (PLC) is used for information exchange over the lines

    E-Print Network [OSTI]

    Boyer, Edmond

    Abstract-- Power Line Communications (PLC) is used for information exchange over the lines installed for delivering the electrical power. Inhome PLC is a technology which delivers telecom services to every corner of a household through already existing electrical wiring. In recent years, PLC has emerged

  1. Computing Criticality of Lines in Power Systems Computational Research Div.

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    Computing Criticality of Lines in Power Systems Ali Pinar Computational Research Div. Lawrence. Planning and operating criteria are designed so that "the interconnected power system shall be operated a vulnerability in the a power system is im- portant, however, system robustness requires identifying all

  2. Making the Economic Case for Innovative HTLS Overhead Conductors

    E-Print Network [OSTI]

    #12;Executive Summary Obtaining new right of ways for constructing transmission lines to handle right of ways. High temperature, low sag overhead transmission conductors present an attractive option is available for downloading from the PSERC website. 2014 Arizona State University. All rights reserved. #12

  3. Requirements for Power Plant and Power Line Development (Wisconsin)

    Broader source: Energy.gov [DOE]

    This page describes requirements for obtaining a Certificate of Public Convenience and Necessity (CPCN) or a Certificate of Authority (CA), one of which is required for any new power plant...

  4. factsheet - trees and power lines - July 2008

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, , ., ...,exercise program | NationalTrees and power

  5. The Business Case for Fuel Cells 2014: Powering the Bottom Line...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    4: Powering the Bottom Line for Businesses and Communities The Business Case for Fuel Cells 2014: Powering the Bottom Line for Businesses and Communities This report, written and...

  6. Minimizing Simultaneous Switching Noise at Reduced Power with Constant-Voltage Power Transmission Lines for High-Speed Signaling

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    plane structure with a power transmission line (PTL). In this paper, a new power delivery scheme called Constant Voltage Power Transmission Line (CV-PTL) is shown to significantly reduce switching noise while, and measurements. Keywords Power delivery network, simultaneous switching noise, power transmission line 1

  7. Lassoing Line Outages in the Smart Power Grid

    E-Print Network [OSTI]

    Zhu, Hao

    2011-01-01T23:59:59.000Z

    Fast and accurate unveiling of power line outages is of paramount importance not only for preventing faults that may lead to blackouts, but also for routine monitoring and control tasks of the smart grid, including state estimation and optimal power flow. Existing approaches are either challenged by the \\emph{combinatorial complexity} issues involved, and are thus limited to identifying single- and double-line outages; or, they invoke less pragmatic assumptions such as \\emph{conditionally independent} phasor angle measurements available across the grid. Using only a subset of voltage phasor angle data, the present paper develops a near real-time algorithm for identifying multiple line outages at the affordable complexity of solving a quadratic program via block coordinate descent iterations. The novel approach relies on reformulating the DC linear power flow model as a \\emph{sparse} overcomplete expansion, and leveraging contemporary advances in compressive sampling and variable selection using the least-abso...

  8. Methods of Using Existing Wire Lines (power lines, phone lines, internet lines) for Totally Secure Classical Communication Utilizing Kirchoff's Law and Johnson-like Noise

    E-Print Network [OSTI]

    Laszlo B. Kish

    2006-10-02T23:59:59.000Z

    We outline some general solutions to use already existing and currently used wire lines, such as power lines, phone lines, internet lines, etc, for the unconditionally secure communication method based on Kirchoff's Law and Johnson-like Noise (KLJN). Two different methods are shown. One is based on filters used at single wires and the other one utilizes a common mode voltage superimposed on a three-phase powerline.

  9. Methods of Using Existing Wire Lines (power lines, phone lines, internet lines) for Totally Secure Classical Communication Utilizing Kirchoff's Law and Johnson-like Noise

    E-Print Network [OSTI]

    Kish, L B

    2006-01-01T23:59:59.000Z

    We outline some general solutions to use already existing and currently used wire lines, such as power lines, phone lines, internet lines, etc, for the unconditionally secure communication method based on Kirchoff's Law and Johnson-like Noise (KLJN). Two different methods are shown. One is based on filters used at single wires and the other one utilizes a common mode voltage superimposed on a three-phase powerline.

  10. Achieving Near Zero SSN Power Delivery Networks by Eliminating Power Planes and Using Constant Current Power Transmission Lines

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    of discontinuities such as a power plane split or multiple via holes. Even with a solid return current pathAchieving Near Zero SSN Power Delivery Networks by Eliminating Power Planes and Using Constant Current Power Transmission Lines Suzanne Huh, Daehyun Chung, and Madhavan Swaminathan Interconnect

  11. Precoded Turbo Equalizer for Power Line Communication Systems

    E-Print Network [OSTI]

    Xie, Kai; Li,

    2010-01-01T23:59:59.000Z

    Power line communication continues to draw increasing interest by promising a wide range of applications including cost-free last-mile communication solution. However, signal transmitted through the power lines deteriorates badly due to the presence of severe inter-symbol interference (ISI) and harsh random pulse noise. This work proposes a new precoded turbo equalization scheme specifically designed for the PLC channels. By introducing useful precoding to reshape ISI, optimizing maximum {\\it a posteriori} (MAP) detection to address the non-Gaussian pulse noise, and performing soft iterative decision refinement, the new equalizer demonstrates a gain significantly better than the existing turbo equalizers.

  12. Public Opinions of Building Additional High-Voltage Electric Power Lines

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Public Opinions of Building Additional High-Voltage Electric Power Lines A Report to the National-Voltage Electric Power Lines: A Report to the National Science Foundation and the Electric Power Research Center to build new power lines. Residents living in counties with planned routes for new transmission lines

  13. A Power Line Communication Network Infrastructure for The Smart Home

    E-Print Network [OSTI]

    Latchman, Haniph A.

    A Power Line Communication Network Infrastructure for The Smart Home Yu-Ju Lin, Haniph A. Latchman's as a basic infrastructure for building integrated "smart homes," wherein infor- mation appliances (IA guarantee QoS for real-time communications, supporting delay sensitive data streams for "Smart Home

  14. Implementation of Power Transmission Lines to Field Programmable Gate Array ICs for Managing Signal

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Implementation of Power Transmission Lines to Field Programmable Gate Array ICs for Managing Signal employs power transmission lines (PTL) that supply power to integrated circuits instead of using is able to reduce SSN and enhance power and signal integrity. Pseudo-balanced power transmission line (PB

  15. Controlled Tripping of Overheated Lines Mitigates Power Outages

    E-Print Network [OSTI]

    Pfitzner, René; Chertkov, Michael

    2011-01-01T23:59:59.000Z

    We study cascades of blackouts in the model of the Polish (transmission) power grid (2700 nodes and 3504 transmission lines). A cascade is initiated by a sufficiently severe initial contingency tripping. The cascade advances via sequential tripping of many more overheated lines (with the thermal limits exceeded), islanding loads and generators and eventually arriving at a fixed point with the surviving part of the system being power- flow-balanced and the rest of the system being outaged. Utilizing the quasi-static model for cascade propagation, introduced in our earlier study (Statistical Classification of Cascading Failures in Power Grids, IEEE PES GM 2011), we analyze how the severity of the cascade depends on the order of tripping overheated lines. Our main observation is that the order of tripping has a tremendous effect on the size of the resulting outage: the probability distribution function of the outage size is broad; moreover in many of the cases studied, picking an overheated line at random result...

  16. New excitation system for indoor testing of overhead conductors

    SciTech Connect (OSTI)

    Gopalan, T.V. (Regional Engineering Coll., Calicut (India). Industry-Inst. Linkage Cell)

    1993-12-01T23:59:59.000Z

    In the study of wind-induced motion of conductors of overhead power transmission lines, an indoor test span measuring 30 m or more is normally used. The span is generally excited into motion by an electrodynamic-type exciter connected at a span end. This connection increases the stiffness of the span at the point of connection, which will affect the dynamic characteristics of the test span. A more exact simulation of the indoor test-conductor motion is essential. Simulation of test-conductor motion using the principle of electrodynamic forces between parallel, long conductors is proposed. Indoor test-span motion by this method is equivalent to steady crosswinds excitation in the field as distinguished from galloping conductors resulting from a combination of wind direction, velocity, moisture, and temperature. Consequently, the results of vibration experiments also will be more exact. The principle employed in the new excitation system, the methods of excitation in indoor spans using the principle, and the advantages of the new excitation system as compared to the presently employed system are discussed in this paper.

  17. Fuel Cell Transit Buses: ThunderPower Bus Evaluation at SunLine...

    Broader source: Energy.gov (indexed) [DOE]

    Fuel Cell Transit Buses: ThunderPower Bus Evaluation at SunLine Transit Agency Fuel Cell Transit Buses: ThunderPower Bus Evaluation at SunLine Transit Agency Report details the...

  18. EIS-0077-S: Bonneville Power Administration Crow Butte Slough Crossing

    Broader source: Energy.gov [DOE]

    The Bonneville Power Administration developed this SEIS to evaluate potential impacts resulting from construction of a 4,700 -foot segment of the Ashe-Slatt transmission line at Crow Butte Slough, overhead on towers on the existing right-of-way. This SEIS is a supplement to DOE/EIS-0077, Ashe-Slatt (Pebble Springs) 500-kilovolt Transmission Line.

  19. EIS-0256: Sierra Pacific Power Company Alturas Transmission Line Project (adopted from BLM)

    Broader source: Energy.gov [DOE]

    This EIS evaluates the environmental setting and consequences of the construction and operation of the proposal Alturas Transmission Line Project. Sierra Pacific Power Company (SPPCO) has proposed this electric power transmission line to improve the existing operational capacity and reliability of its power transmission system and provide for anticipated growth in demand for electric power.

  20. A power line impedance spectrum analyzer using real-time digital signal processing

    E-Print Network [OSTI]

    Margolis, Michael G

    1993-01-01T23:59:59.000Z

    Power distribution system impedance as seen by power converters and other non-linear loads is important for the determination of harmonic current injection and propagation caused by these loads. This thesis presents a real-time power line impedance...

  1. Development and application of composite overhead ground wire with optical fibers

    SciTech Connect (OSTI)

    Tsujimoto, K.; Kato, T.; Okazato, A.; Sakurada, H.

    1983-05-01T23:59:59.000Z

    A overhead ground wire composed with optical fibers has been developed, as well as the accessories and the joints. The overhead ground wire is provided with an aluminum pipe at the core thereof in which the optical fibers are inserted. The composite overhead ground wire with optical fibers was installed for the Kaga-Reinan 500 kV overhead transmission line in autumn, 1981 for the purposes of observing lightning and using as telecommunication line, as well. After the successful performance of the optical fiber, especially in view of transmission loss after installation, has been proved, the composite overhead ground wire is now being checked for the purposes as stated above. The ground wire was also installed for the Tsuruga Test Line at about the same time and investigations were started to confirm the reliability of the optical fiber to be over a long period of time under severe meteorological conditions such as strong winds and icing. The construction of the composite ground wire with optical fibers is such that the optical fibers contained therein are not restrained by the ground wire itself. This enables insertion and pulling out of optical fiber cables. Tests were conducted at certain sections of the Kaga-Reinan Line to confirm that there was no change in the performance of the optical fibers due to such operations of insertion and pulling out. This report briefly discusses the development of the composite ground wire with optical fibers, its installation and the test results.

  2. Power Capture (PowCap) Board for Non Intrusive Load Monitoring and Power Line Communication Exploration and Development

    E-Print Network [OSTI]

    Balakrishnan, Vikram

    2013-01-01T23:59:59.000Z

    PowCap with PLC: Lookingti] “Power Line Communication (PLC) Solutions. ” http://overview.page? DCMP=plc&HQS=plc. [Tsu99] K. Tsuda. “Subspace

  3. Power line communications (PLC) using impulse ultra wideband (UWB) in a microprocessor had been

    E-Print Network [OSTI]

    Ha, Dong S.

    Abstract Power line communications (PLC) using impulse ultra wideband (UWB) in a microprocessor had data to sensors and for on-line testing. Power line communications (PLC), patented in the early 1920's]. As noted in [1]-[2], PLC in a microprocessor faces a totally different set of technical challenges from

  4. Power line harmonic radiation observed by satellite: Properties and propagation through the ionosphere

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation observed by satellite: Properties and propagation through of power line harmonic radiation events observed by the low-altitude DEMETER spacecraft. Altogether, 88 with the largest intensities often occur off exact multiples of base power system frequency. This can be explained

  5. Number and propagation of line outages in cascading events in electric power transmission systems

    E-Print Network [OSTI]

    Dobson, Ian

    Number and propagation of line outages in cascading events in electric power transmission systems that progressively weakens the system. Large electric power transmission systems occasionally have cascading failures of transmission lines. The multiple mechanisms involved these cascading outages are many and varied, and the power

  6. Matrix Codes and Multitone Frequency Shift Keying for Power Line Communications

    E-Print Network [OSTI]

    Chee, Yeow Meng

    Power line communications (PLC) is a technology that enables transmission of data over electric power- cal area networking, since the electrical grid infrastructure provides "last mile" connectivityMatrix Codes and Multitone Frequency Shift Keying for Power Line Communications Yeow Meng Chee, Han

  7. LS Power Associates (ON Line - formerly known as SWIP-S) | Department...

    Office of Environmental Management (EM)

    (ON Line) project, a 235-mile, 500 kV AC transmission line capable of carrying 600 MW of power to the grid, running north-south between Ely, NV and just north of Las Vegas. The...

  8. Power Line Communications: An Overview Part II Muhammad Salman Yousuf 1

    E-Print Network [OSTI]

    Rizvi, Syed Z.

    ) \\in the frequency range of 50-60 Hz. It is a fact that power transmission towers and lines are some

  9. SunLine Transit Agency, Hydrogen Powered Transit Buses: Preliminary Evaluation Results

    SciTech Connect (OSTI)

    Chandler, K.; Eudy, L.

    2007-02-01T23:59:59.000Z

    This paper provides preliminary results from an evaluation by DOE's National Renewable Energy Laboratory of hydrogen-powered transit buses at SunLine Transit Agency.

  10. Power Lines and Crops Can Be Good Neighbors

    SciTech Connect (OSTI)

    none,

    2010-08-01T23:59:59.000Z

    Two of the Pacific Northwest’s greatest economic assets are its wealth of agriculture and its clean and reliable electricity fueled largely by hydropower. Sometimes the two intersect. Transmission lines carrying electricity to the region’s farms, businesses and homes must, of necessity, span large areas where people grow crops and orchards. To ensure a safe and reliable flow of electricity across these expanses, trees and other vegetation must be managed to certain standards. At the same time, the Bonneville Power Administration — which owns and operates three-quarters of the region’s high-voltage transmission — recognizes the importance of our region’s agricultural bounty. We are committed to working with individuals and agricultural communities to facilitate ongoing land-use activities in transmission rights-of-way as long as those uses are compatible with transmission safety and reliability standards. Our goal with vegetation management is to keep you and your property safe while protecting the reliability of our region’s electricity system. By working together, BPA and landowners can protect the system and public safety.

  11. An Exact Algorithm for Power Grid Interdiction Problem with Line ...

    E-Print Network [OSTI]

    2012-01-08T23:59:59.000Z

    late the problem of optimal interdiction of an electric power network as a ...... from power, military logistics, or other infrastructure systems. [9, 6, 28], can be solved ...

  12. What is about future high speed power line communication systems for in-vehicles networks ?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    What is about future high speed power line communication systems for in-vehicles networks and results are given for different applications. Index Terms-- vehicles, power line, X-by-wire, embedded related to the steering, traction, braking system (ABS), Electronic Stability Program (ESP), Electric

  13. Importance of Symbol Equity in Coded Modulation for Power Line Communications

    E-Print Network [OSTI]

    Chee, Yeow Meng

    electric power lines. Started in the 1950's in the form of ripple control for load and tariff management the electrical grid infrastructure provides "last mile" connectivity to premises and capillarity within premisesImportance of Symbol Equity in Coded Modulation for Power Line Communications Yeow Meng Chee, Han

  14. Engine optimal operation lines for power-split hybrid electric vehicles

    E-Print Network [OSTI]

    Papalambros, Panos

    . Keywords: hybrid electric vehicle, power split, energy management strategy, optimal operation lineEngine optimal operation lines for power-split hybrid electric vehicles Kukhyun Ahn* and P Y of degrees of freedom in energy management. Optimization problems for the two operation modes are formulated

  15. Power Line Damage, Electrical Outages Reduced in the ''Sleet Belt'': NICE3 Steel Project Fact Sheet

    SciTech Connect (OSTI)

    NONE

    2000-04-25T23:59:59.000Z

    The AR Windamper System was developed through a grant from the Inventions and Innovation Program, to protect power transmission lines in sleet belt states and provinces by eliminating the ''galloping'' phenomenon. Wind damping products minimize power outages and reduce repair costs to transmission lines.

  16. POWER SYSTEM LINE OUTAGE DETECTION AND IDENTIFICATION --A QUICKEST CHANGE DETECTION APPROACH

    E-Print Network [OSTI]

    Liberzon, Daniel

    POWER SYSTEM LINE OUTAGE DETECTION AND IDENTIFICATION -- A QUICKEST CHANGE DETECTION APPROACH Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign ABSTRACT A method to detect and isolate power system transmission line outages in near real-time is proposed

  17. Power Line Carrier (PLC) Signal Analysis of Smart Meters for Outlier Detection

    E-Print Network [OSTI]

    Akella, Srinivas

    Power Line Carrier (PLC) Signal Analysis of Smart Meters for Outlier Detection Rakesh Rao Dept-- A method for identifying outliers among a set of smart meters by using the power line carrier (PLC) signal strength is presented in this paper. The broad goal is to use the PLC signal as a predictor of transmission

  18. > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) power

    E-Print Network [OSTI]

    --The detection of island formation in power networks is prerequisite for the study of security analysis into the topological impacts of outaged lines on system connectivity from the use power transfer distribution factor-time and offline environments for security analysis and control. Index Terms-- island formation, multiple line

  19. Copyright 2013 IEEE. Reprinted, with permission from: Line Limit Preserving Power System Equivalent

    E-Print Network [OSTI]

    Copyright © 2013 IEEE. Reprinted, with permission from: Line Limit Preserving Power System IEEE endorsement of any of the Power Systems Engineering Research Center 's products or services equivalent of a power system is a simplified model of the original system with the ability to preserve some

  20. A Testing Platform for Validation of Overhead Conductor Aging Models and Understanding Thermal Limits

    SciTech Connect (OSTI)

    Irminger, Philip [ORNL; Starke, Michael R [ORNL; Dimitrovski, Aleksandar D [ORNL; Young II, Marcus Aaron [ORNL; Rizy, D Tom [ORNL; Stovall, John P [ORNL; Overholt, Philip N [U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability (OE)

    2014-01-01T23:59:59.000Z

    Power system equipment manufacturers and researchers continue to experiment with novel overhead electric conductor designs that support better conductor performance and address congestion issues. To address the technology gap in testing these novel designs, Oak Ridge National Laboratory constructed the Powerline Conductor Accelerated Testing (PCAT) facility to evaluate the performance of novel overhead conductors in an accelerated fashion in a field environment. Additionally, PCAT has the capability to test advanced sensors and measurement methods for accessing overhead conductor performance and condition. Equipped with extensive measurement and monitoring devices, PCAT provides a platform to improve/validate conductor computer models and assess the performance of novel conductors. The PCAT facility and its testing capabilities are described in this paper.

  1. Lazy Checkpointing : Exploiting Temporal Locality in Failures to Mitigate Checkpointing Overheads on Extreme-Scale Systems

    SciTech Connect (OSTI)

    Tiwari, Devesh [ORNL] [ORNL; Gupta, Saurabh [ORNL] [ORNL; Vazhkudai, Sudharshan S [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Continuing increase in the computational power of supercomputers has enabled large-scale scientific applications in the areas of astrophysics, fusion, climate and combustion to run larger and longer-running simulations, facilitating deeper scientific insights. However, these long-running simulations are often interrupted by multiple system failures. Therefore, these applications rely on ``checkpointing'' as a resilience mechanism to store application state to permanent storage and recover from failures. \\\\ \\indent Unfortunately, checkpointing incurs excessive I/O overhead on supercomputers due to large size of checkpoints, resulting in a sub-optimal performance and resource utilization. In this paper, we devise novel mechanisms to show how checkpointing overhead can be mitigated significantly by exploiting the temporal characteristics of system failures. We provide new insights and detailed quantitative understanding of the checkpointing overheads and trade-offs on large-scale machines. Our prototype implementation shows the viability of our approach on extreme-scale machines.

  2. EA-1679: Grand Coulee's Third Powerplant 500-kV Transmission Line Replacement Project, Grant and Okanogon Counties, Washington

    Broader source: Energy.gov [DOE]

    This EA evaluates potential environmental impacts from the construction and operation of six new 500-kV overhead transmission lines to replace six existing underground lines at Grand Coulee Dam. DOE’s Bonneville Power Administration (BPA), a cooperating agency, was asked by the U. S. Department of the Interior’s Bureau of Reclamation to design and construct the proposed new transmission lines. A Finding of No Significant Impact was issued by BPA in December 2011.

  3. Microsoft Word - Broadband Over Power Lines_FINAL.06.01.10.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Broadband Over Power Lines Could Accelerate the Transmission Smart Grid 1 Prepared by: Booz Allen Hamilton (BAH) Bruce Renz Renz Consulting, LLC DOE Contract number: DE-FE000400...

  4. Calculation methods and detection techniques for electric and magnetic fields from power lines with measurement verification

    E-Print Network [OSTI]

    Mamishev, Alexander V

    1994-01-01T23:59:59.000Z

    of extremely low frequency magnetic fields in the direct proximity of the conductors of power lines, situated well above the ground level. Conventional approximation of a sagged wire as a straight horizontal conductor of infinite length has been substituted...

  5. Cleaning process development and optimization in the surface mount assembly line of power modules

    E-Print Network [OSTI]

    Mukherjee, Ishan

    2011-01-01T23:59:59.000Z

    The cleaning process in the surface mount assembly line of power modules had been found to insufficiently remove solder flux residue from printed circuit board (PCB) assemblies after the process of reflow soldering. This ...

  6. Using Dielectric Losses to De-Ice Power Transmission Lines with 100 kHz High-Voltage

    E-Print Network [OSTI]

    Using Dielectric Losses to De-Ice Power Transmission Lines with 100 kHz High-Voltage Excitation J DIELECTRIC LOSSES TO DE-ICE POWER TRANSMISSION LINES . . . 1 Using Dielectric Losses to De-Ice Power Transmission Lines with 100 kHz High-Voltage Excitation Joshua D. McCurdy, Charles R. Sullivan and Victor F

  7. Power Transmission Lines: A New Interconnect Design to Eliminate Simultaneous Switching Noise A. Ege Engin and Madhavan Swaminathan

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Power Transmission Lines: A New Interconnect Design to Eliminate Simultaneous Switching Noise A of the coupling between the signal lines and the power delivery network (PDN) in off-chip signaling. This coupling presents a new PDN design, called as the power transmission line, which overcomes these problems

  8. Transmission line design manual. A guide for the investigation, development, and design of power transmission lines. Water resources technical pub

    SciTech Connect (OSTI)

    Farr, H.H.

    1980-01-01T23:59:59.000Z

    The purpose of the manual is to outline the various requirements for, and the procedures to be followed in the design of power transmission lines by the Bureau of Reclamation. U.S. Department of the Interior. Numerous design studies, which have been made on specific aspects of transmission line design, are included with explanations of their applications. Information is presented concerning such aspects as selection of type of construction, conductor sags and tensions, insulation, lightning protection, clearance patterns, galloping conductors, structure limitation and guying charts, and structure spotting. Structure design examples are limited to wood-pole construction. Interpretations of the National Electrical Safety Code and other codes are made as required.

  9. Power Line Plan of Development Outline | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska: EnergyPiratiniEdwards,PoseyPoudre Valley RGenerating Inc Place:Line

  10. The power of quantum systems on a line

    E-Print Network [OSTI]

    Dorit Aharonov; Daniel Gottesman; Sandy Irani; Julia Kempe

    2009-02-19T23:59:59.000Z

    We study the computational strength of quantum particles (each of finite dimensionality) arranged on a line. First, we prove that it is possible to perform universal adiabatic quantum computation using a one-dimensional quantum system (with 9 states per particle). This might have practical implications for experimentalists interested in constructing an adiabatic quantum computer. Building on the same construction, but with some additional technical effort and 12 states per particle, we show that the problem of approximating the ground state energy of a system composed of a line of quantum particles is QMA-complete; QMA is a quantum analogue of NP. This is in striking contrast to the fact that the analogous classical problem, namely, one-dimensional MAX-2-SAT with nearest neighbor constraints, is in P. The proof of the QMA-completeness result requires an additional idea beyond the usual techniques in the area: Not all illegal configurations can be ruled out by local checks, so instead we rule out such illegal configurations because they would, in the future, evolve into a state which can be seen locally to be illegal. Our construction implies (assuming the quantum Church-Turing thesis and that quantum computers cannot efficiently solve QMA-complete problems) that there are one-dimensional systems which take an exponential time to relax to their ground states at any temperature, making them candidates for being one-dimensional spin glasses.

  11. Green Power Transmission Line Given New Life | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment of aLoggingsubscriber to the Green PowerPoles

  12. Power line damage, electrical outages, reduced in the {open_quotes}sleet belt{close_quotes}

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    Companies that depend on reliable supplies of electricity, as well as electrical utilities, need to defend against weather-related damage and power outages. Weather-related damage claims in the U.S. totaled $16 billion during the ten-year span from 1980 through 1989 and have already reached $48 billion in the first five years of this decade, evidence that climate change could be causing more severe storms. This makes technology that minimizes weather damage all the more welcome. Ice and snow build-up on high-voltage electric power lines in a moderate to high winds causes high-amplitude low-frequency mechanical vibrations, called galloping. When power lines react aero-elastically to these conditions, undamped vibration tears apart transmission towers and fittings or propels lines into each other, shorting out large circuits. Besides causing costly electric system outages and structural damage, this dramatic phenomenon steals power through higher electricity line losses that occur when other conductors have to carry more power to compensate for a tripped or damaged line. In a 1981 survey, 17 of 38 utilities reported that galloping was a moderate to severe problem, and 11 reported that they had a galloping event at least once a year. Fifty-seven percent of the incidents included flashover, and 60% included structural damage.

  13. A system for tranmitting low frequency analog signals over ac power lines

    DOE Patents [OSTI]

    Baker, S.P.; Durall, R.L.; Haynes, H.D.

    1987-07-30T23:59:59.000Z

    A system for transmitting low frequency analog signals over ac power lines using FM modulation. A low frequency analog signal to be transmitted is first applied to a voltage-to-frequency converter where it is converted to a signal whose frequency varies in proportion to the analog signal amplitude. This signal is then used to modulate the carrier frequency of an FM transmitter coupled to an ac power line. The modulation signal frequency range is selected to be within the response band of the FM transmitter. The FM modulated carrier signal is received by an FM receiver coupled to the ac power line, demodulated and the demodulated signal frequency is converted by a frequency-to-voltage converter back to the form of the original low frequency analog input signal. 4 figs.

  14. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 3, AUGUST 2009 1633 Direct Calculation of Line Outage Distribution Factors

    E-Print Network [OSTI]

    Fu, Yong

    IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 3, AUGUST 2009 1633 Direct Calculation of Line significantly the security analyses of power systems. This letter provides two direct proofs for expressing distribution factor, power transfer distribution factor, shift factor. I. INTRODUCTION LINE outage distribution

  15. Magnet power supply control of the NSLS VUV and x-ray storage rings transfer lines

    SciTech Connect (OSTI)

    Klein, J.D.; Ramamoorthy, S.; Singh, O.; Smith, J.D.

    1985-01-01T23:59:59.000Z

    The transfer lines for NSLS VUV and x-ray storage rings have been split. New power supplies have been incorporated with existing ones. The existing microprocessor system has been upgraded in order to control the additional functions. This system expands the input/output port of the microprocessor to an addressable serial/parallel link to each magnet power supply. The implementation of this system will be discussed.

  16. Theoretical and experimental investigation of axial power extraction from a magnetically insulated transmission line oscillator

    SciTech Connect (OSTI)

    Lemke, R.W.; DeMuth, G.E.; Biggs, A.W. (Sandia National Labs., Albuquerque, NM (USA); Air Force Weapons Lab., Kirtland AFB, NM (USA); Alabama Univ., Huntsville, AL (USA). Dept. of Electrical and Computer Engineering)

    1989-01-01T23:59:59.000Z

    The utility of the magnetically insulated transmission line oscillator (MILO) as a high power microwave source depends on how efficiently power can be extracted from it. We have designed a slow-wave stepped transformer for the purpose of axially extracting microwave power from a 3.6 GHz coaxial MILO. The slow-wave transformer design was optimized using particle-in-cell simulation, and tested in experiments performed on the HPM Simulation Division's GEMINI and GYPSY water Blumlein pulse power sources. In this paper we summarize the slow-wave stepped transformer design, and describe MILO axial power extraction experiments which yielded up to 300 MW of radiated power. 10 refs., 4 figs., 2 tabs.

  17. Bias-field controlled phasing and power combination of gyromagnetic nonlinear transmission lines

    SciTech Connect (OSTI)

    Reale, D. V., E-mail: david.reale@ttu.edu; Bragg, J.-W. B.; Gonsalves, N. R.; Johnson, J. M.; Neuber, A. A.; Dickens, J. C.; Mankowski, J. J. [Center for Pulsed Power and Power Electronics, Texas Tech University, Lubbock, Texas 79409 (United States)

    2014-05-15T23:59:59.000Z

    Gyromagnetic Nonlinear Transmission Lines (NLTLs) generate microwaves through the damped gyromagnetic precession of the magnetic moments in ferrimagnetic material, and are thus utilized as compact, solid-state, frequency agile, high power microwave (HPM) sources. The output frequency of a NLTL can be adjusted by control of the externally applied bias field and incident voltage pulse without physical alteration to the structure of the device. This property provides a frequency tuning capability not seen in many conventional e-beam based HPM sources. The NLTLs developed and tested are mesoband sources capable of generating MW power levels in the L, S, and C bands of the microwave spectrum. For an individual NLTL the output power at a given frequency is determined by several factors including the intrinsic properties of the ferrimagnetic material and the transmission line structure. Hence, if higher power levels are to be achieved, it is necessary to combine the outputs of multiple NLTLs. This can be accomplished in free space using antennas or in a transmission line via a power combiner. Using a bias-field controlled delay, a transient, high voltage, coaxial, three port, power combiner was designed and tested. Experimental results are compared with the results of a transient COMSOL simulation to evaluate combiner performance.

  18. Determination of High-Frequency Current Distribution Using EMTP-Based Transmission Line Models with Resulting Radiated Electromagnetic Fields

    SciTech Connect (OSTI)

    Mork, B; Nelson, R; Kirkendall, B; Stenvig, N

    2009-11-30T23:59:59.000Z

    Application of BPL technologies to existing overhead high-voltage power lines would benefit greatly from improved simulation tools capable of predicting performance - such as the electromagnetic fields radiated from such lines. Existing EMTP-based frequency-dependent line models are attractive since their parameters are derived from physical design dimensions which are easily obtained. However, to calculate the radiated electromagnetic fields, detailed current distributions need to be determined. This paper presents a method of using EMTP line models to determine the current distribution on the lines, as well as a technique for using these current distributions to determine the radiated electromagnetic fields.

  19. EIS-0447: Champlain Hudson Power Express Transmission Line Project, New York

    Broader source: Energy.gov [DOE]

    This EIS evaluated the potential environmental impacts of a DOE proposal to grant a Presidential permit to Champlain Hudson Power Express, Inc., to construct, operate, maintain, and connect a new 1000-megawatt (MW) electric transmission system across the U.S.-Canada border in northeastern New York State. The proposed transmission line would run from the Canadian Province of Quebec to New York City.

  20. Design and Performance Evaluation of an Hybrid Reservation-Polling MAC Protocol for Power-Line

    E-Print Network [OSTI]

    Tinnirello, Ilenia

    channel. Moreover, by slightly reducing the system utilization, a target 1% packet loss ratio can be met remote electricity meter reading, energy management, appliance control and maintenance, home automation) is a quickly developing technology, aiming at the utilization of low-voltage power lines for the transmission

  1. Evaluation of line focus solar central power systems. Volume II. Systems evaluation

    SciTech Connect (OSTI)

    Not Available

    1980-03-15T23:59:59.000Z

    An evaluation was completed to ascertain the applicability of line focus technologies to electrical power applications and to compare their performance and cost potential with point focus central receiver power systems. It was concluded that although the high temperature line focus (SRI) and fixed mirror line focus (GA) concepts duplicate the heat source characteristics and power conversion technology of the central receiver concepts these configurations do not offer a sufficient improvement in cost to warrant full scale development. The systems are, however, less complex than their point focus counterpart and should the central receiver system development falter they provide reasonable technology alternatives. The parabolic trough concept (BDM) was found to provide a low temperature technology alternative to the central receiver concept with promising performance and cost potential. Its continued development is recommended, with special emphasis on lower temperature (< 700/sup 0/F) applications. Finally, a variety of new promising line focus power system configurations were identified for a range of utility and industrial applications and recommendations were made on their implementation. This volume contains the detailed report. (WHK)

  2. Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers

    E-Print Network [OSTI]

    Xu, TengFang T.

    2009-01-01T23:59:59.000Z

    Scalable Overhead Cooling Systems In Data Centers FinalFOR MODULAR, SCALABLE OVERHEAD COOLING SYSTEMS IN DATATHE CHARACTERISTICS OF MODULAR, SCALABLE COOLING SYSTEMS AND

  3. Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers

    E-Print Network [OSTI]

    Xu, TengFang T.

    2009-01-01T23:59:59.000Z

    Overhead Cooling Systems In Data Centers Final Report To TheCOOLING SYSTEMS IN DATA CENTERS ..Scalable Overhead Cooling Systems in Data Centers 1 Problem

  4. Line asymmetry of solar p-modes: Reversal of asymmetry in intensity power spectra

    E-Print Network [OSTI]

    Pawan Kumar; Sarbani Basu

    1999-02-19T23:59:59.000Z

    The sense of line asymmetry of solar p-modes in the intensity power spectra is observed to be opposite of that seen in the velocity power spectra. Theoretical calculations provide a good understanding and fit to the observed velocity power spectra whereas the reverse sense of asymmetry in the intensity power spectrum has been poorly understood. We show that when turbulent eddies arrive at the top of the convection zone they give rise to an observable intensity fluctuation which is correlated with the oscillation they generate, thereby affecting the shape of the line in the p-mode power spectra and reversing the sense of asymmetry (this point was recognized by Nigam et al. and Roxburgh & Vorontsov). The addition of the correlated noise displaces the frequencies of peaks in the power spectrum. Depending on the amplitude of the noise source the shift in the position of the peak can be substantially larger than the frequency shift in the velocity power spectra. In neither case are the peak frequencies precisely equal to the eigenfrequencies of p-modes. We suggest two observations which can provide a test of the model discussed here.

  5. A near-Zero Run-time Energy Overhead within a Computation Outsourcing Framework for Energy Management in Mobile Devices

    E-Print Network [OSTI]

    Helal, Abdelsalam

    with a run-time monitoring system that consumes an extremely low amount of energy (near-Zero). This near Monitor, Battery Monitor. 1. Introduction Energy/Power management in mobile devices has been and continues incurring a near-Zero run-time overhead. Key Words- Energy Management, Outsourcing, Smart Spaces, Energy

  6. 650 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 26, NO. 2, APRIL 2011 Hourly Scheduling of DC Transmission Lines in

    E-Print Network [OSTI]

    Fu, Yong

    Transmission Lines in SCUC With Voltage Source Converters Azim Lotfjou, Mohammad Shahidehpour, Fellow, IEEE transmission lines, se- curity-constrained unit commitment, voltage-source converters. NOMENCLATURE Index of ac;LOTFJOU et al.: HOURLY SCHEDULING OF DC TRANSMISSION LINES 651 , Vector of real and reactive power

  7. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 0, NO. 0, MONTH YEAR 1 On-line Dynamic Security Assessment with Missing

    E-Print Network [OSTI]

    Reisslein, Martin

    IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 0, NO. 0, MONTH YEAR 1 On-line Dynamic Security Assessment is proposed for on-line dynamic security assessment (DSA), with the objective of mitigating the impact of viable small DTs. The security classification decision for on-line DSA is obtained via a weighted voting

  8. A simple packet retransmission strategy for throughput and delay enhancement on power line communication channels

    SciTech Connect (OSTI)

    Onunga, J.O. (Kenya Posts and Telecommunications Corp., Nairobi (Kenya)); Donaldson, R.W. (Univ. of British Columbia, Vancouver (Canada). Dept. of Electrical Engineering)

    1993-07-01T23:59:59.000Z

    A new, simple, and effective communication protocol is developed and evaluated for use on power line distribution networks. The protocol involves retransmission of unacknowledged packets, which are sent in either single or multiple (N) copies in accordance with estimates of communication link quality. Multiple packet copies can be code combined at the receiver, using majority voting on each bit position, to reduce packet error rates. Adaptive link quality estimates are based on the receipt or absence of positive acknowledgements. Information throughput efficiency is calculated and N optimized in terms of system variables. Performance benefits of code combining are clearly demonstrated. The algorithm was implemented and tested using a five-station intrabuilding power line communications network operating at 1.2, 2.4, 4.8 and 9.6 kbit/s data rate. Substantial throughput and delay improvement occurred on poor quality links, without degrading performance on good links.

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

    DOE Patents [OSTI]

    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

    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.

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

    DOE Patents [OSTI]

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

    1982-07-29T23:59:59.000Z

    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.

  11. Sensor, method and system of monitoring transmission lines

    DOE Patents [OSTI]

    Syracuse, Steven J.; Clark, Roy; Halverson, Peter G.; Tesche, Frederick M.; Barlow, Charles V.

    2012-10-02T23:59:59.000Z

    An apparatus, method, and system for measuring the magnetic field produced by phase conductors in multi-phase power lines. The magnetic field measurements are used to determine the current load on the conductors. The magnetic fields are sensed by coils placed sufficiently proximate the lines to measure the voltage induced in the coils by the field without touching the lines. The x and y components of the magnetic fields are used to calculate the conductor sag, and then the sag data, along with the field strength data, can be used to calculate the current load on the line and the phase of the current. The sag calculations of this invention are independent of line voltage and line current measurements. The system applies a computerized fitter routine to measured and sampled voltages on the coils to accurately determine the values of parameters associated with the overhead phase conductors.

  12. The effects of lightning and high altitude electromagnetic pulse on power distribution lines

    SciTech Connect (OSTI)

    Uman, M.A.; Rubinstein, M.; Yacoub, Z. [Florida Univ., Gainesville, FL (United States)

    1995-01-01T23:59:59.000Z

    We simultaneously recorded the voltages induced by lightning on both ends of an unenergized 448-meter long unenergized electric power line and the lightning vertical electric and horizontal magnetic fields at ground level near the line. The lightning data studied and presented here were due both to cloud lightning and to very close (about 20 m from the line) artificially initiated lightning. For cloud sources, a frequency-domain computer program called EMPLIN was used to calculate induced line voltages as a function of source elevation, angle of incidence, and wave polarization of the radiated cloud discharge pulses in order to compare with the measurements. For very-close lightning, the measured line voltages could be grouped into two categories, those in which multiple, similarly shaped, evenly spaced pulses were observed, which we call oscillatory, and those dominated by a principal pulse with subsidiary oscillations of much smaller amplitude, which we call impulsive. The amplitude of the induced voltage ranged from tens of kilovolts for oscillatory voltages to hundreds of kilovolts for impulsive voltages. A new technique is derived for the calculation of the electromagnetic fields from nearby lightning to ground above an imperfectly conducting ground. This technique was used in conjunction with an existing time domain coupling theory and lightning return stroke model to calculate voltages at either end of the line. The results show fair agreement with the measured oscillatory voltage waveforms if corona is ignored and improved results when corona effects are modeled. The modeling of the impulsive voltage, for which local flashover probably successful. In an attempt to understand better the sources of the line voltages for very close lightning, measurements of the horizontal and vertical electric fields 30 m from triggered lightning were obtained.

  13. DATA-DRIVEN ON-LINE PREDICTION OF THE AVAILABLE RECOVERY TIME IN NUCLEAR POWER PLANT FAILURE SCENARIOS

    E-Print Network [OSTI]

    Boyer, Edmond

    -XADS). Key Words: Recovery Time, Emergency Accident Management, Nuclear Power Plant, Lead- Bismuth Eutectic e1 DATA-DRIVEN ON-LINE PREDICTION OF THE AVAILABLE RECOVERY TIME IN NUCLEAR POWER PLANT FAILURE [Øwre, 2001]. Yet, the problem of what kind of decision support to provide to nuclear power plant

  14. Sidney-North Yuma 230-kV Transmission Line Project, Colorado and Nebraska

    SciTech Connect (OSTI)

    Not Available

    1991-06-01T23:59:59.000Z

    This report describes the need for a 230-kV overhead transmission line to supply power from Sidney, Nebraska to eastern Colorado. The alternative scenario compared to construction of the line is No Action. Rejected alternatives include underground lines and different routing paths, with a possible extension to the Sterling area. Both scenarios are evaluated for environmental effects, cost, and consequences for the eastern Colorado region. The proposed route is determined to be the environmentally preferred choice. 120 refs., 6 figs., 13 tabs. (MHB)

  15. Analysis of a Main Steam Line Break in Asco Nuclear Power Plant

    SciTech Connect (OSTI)

    Cuadra, Arantxa; Gago, Jose Luis; Reventos, Francesc

    2001-06-17T23:59:59.000Z

    A comprehensive analysis of a double-ended main steam line break (MSLB) accident assumed to occur in the Asco nuclear power plant was carried out using the RELAP/PARCS coupled code. The general results of the benchmark provide a certain qualification of tools and methodologies used. Applying such methodologies to other plant models can be useful to extend conclusions and to identify areas where further analysis is needed. The calculations showed the capability of the control rod to recover the accident. However, one stuck control rod caused some recriticality or return to power (RTP), whose magnitude is heavily affected by the initial and boundary conditions. This paper identifies similarities and discrepancies between the benchmark calculation on the TMI-1 model and the Westinghouse three-loop calculation on the Asco model. The use of an integral plant model was helpful in showing the importance on the RTP of different plant systems that are modeled in detail. The high-pressure injection system and feedwater lines as well as the broken steam line model are the most significant.

  16. EA-0962: Construction and Routine Operation of a 12-kilovolt Overhead Powerline and Formal Authorization for a 10-inch and 8-inch Fresh Water Pipeline Right-of-Way at Naval Petroleum Reserve No. 1, Kern County, California

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of the proposal to install an overhead powerline extension from the U.S. Department of Energy's Naval Petroleum Reserve No. 1 (NPR-1) power source to the...

  17. Use of standard overhead variances as a management tool

    E-Print Network [OSTI]

    Beasley, Robert C

    1964-01-01T23:59:59.000Z

    hour (Actual man-hours ? Achieved standard hours) x Standard overhead rate per hour. 3. A third method of analyzing overhead variances, if we can call it a method, is not to analyze them at all. This is all too common, but it is obviously very... cost applicable to the actual number of man or machine hours. 6 National Association of Cost Accountants, ~o. cit. , p. 87. D. "Capacity volume component, " or the amount of fixed cost underabsorbed (or overabsorbed) because the number of actual...

  18. Design and Manufacture of the RF Power Supply and RF Transmission Line for SANAEM Project Prometheus

    E-Print Network [OSTI]

    Turemen, G; Unel, G; Alacakir, A

    2015-01-01T23:59:59.000Z

    A 1-5 MeV proton beamline is being built by the Turkish Atomic Energy Authority in collaboration with a number of graduate students from different universities. The most important aspect of the project, is to acquire the design ability and manufacturing capability of all the components locally. SPP will be an accelerator and beam diagnostics test facility and it will also serve the detector development community with its low beam current. This paper discusses the design and construction of the RF power supply and the RF transmission line components such as its waveguide converters and its circulator.

  19. Development of a method of measuring relative phase difference between sending and receiving voltage on a power line

    E-Print Network [OSTI]

    Rackley, Benton Tiburce

    1950-01-01T23:59:59.000Z

    Westinghouse Phase Angle Meter . . . 10 6. Schematic of a Standard Phase Angle Meter . 17 7. Schematic of Converted Phase Angle Meter . . 18 8. Meter As Normally Connected To Power Line . 20 9 . Laboratory Circuit 10. Laboratorv Set Up 21 22 11. 9raph... conditions on the important lines. The attendant could then know when given lines are approaching instability and precautions could be taken on loading. BIBLIOGRAPHY BOOKS 1. Westinghouse Electric and Manufacturing Company, Electrical Transmission...

  20. Voltage Collapse and ODE Approach to Power Flows: Analysis of a Feeder Line with Static Disorder in Consumption/Production

    E-Print Network [OSTI]

    Chertkov, M; Turtisyn, K; Chernyak, V; Lebedev, V

    2011-01-01T23:59:59.000Z

    We consider a model of a distribution feeder connecting multiple loads to the sub-station. Voltage is controlled directly at the head of the line (sub-station), however, voltage anywhere further down the line is subject to fluctuations, caused by irregularities of real and reactive distributed power consumption/generation. The lack of a direct control of voltage along the line may result in the voltage instability, also called voltage collapse - phenomenon well known and documented in the power engineering literature. Motivated by emerging photo-voltaic technology, which brings a new source of renewable generation but also contributes significant increase in power flow fluctuations, we reexamine the phenomenon of voltage stability and collapse. In the limit where the number of consumers is large and spatial variations in power flows are smooth functions of position along the feeder, we derive a set of the power flow Ordinary Differential Equations (ODE), verify phenomenon of voltage collapse, and study the ef...

  1. Grand Coulee Transmission Line Replacement Project

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    by the Bureau of Reclamation to design and construct six new 500-kV overhead transmission lines at Grand Coulee Dam. BPA will replace the existing underground transmission...

  2. On-line Decentralized Charging of Plug-In Electric Vehicles in Power Systems

    E-Print Network [OSTI]

    Li, Qiao; Negi, Rohit; Franchetti, Franz; Ilic, Marija D

    2011-01-01T23:59:59.000Z

    Plug-in electric vehicles (PEV) are gaining increasing popularity in recent years, due to the growing societal awareness of reducing greenhouse gas (GHG) emissions and the dependence on foreign oil or petroleum. Large-scale implementation of PEVs in the power system currently faces many challenges. One particular concern is that the PEV charging can potentially cause significant impact on the existing power distribution system, due to the increase in peak load. As such, this work tries to mitigate the PEV charging impact by proposing a decentralized smart PEV charging algorithm to minimize the distribution system load variance, so that a 'flat' total load profile can be obtained. The charging algorithm is on-line, in that it controls the PEV charging processes in each time slot based entirely on the current power system state. Thus, compared to other forecast based smart charging approaches in the literature, the charging algorithm is robust against various uncertainties in the power system, such as random PE...

  3. Treatment of biodiversity issues in impact assessment of electricity power transmission lines: A Finnish case review

    SciTech Connect (OSTI)

    Soederman, Tarja [Senior Researcher, Lic. Phil., Finnish Environment Institute, Nature Division, P.O. Box 140, FIN-00251 Helsinki (Finland)]. E-mail: tarja.soderman@ymparisto.fi

    2006-05-15T23:59:59.000Z

    The Environmental Impact Assessment (EIA) process concerning the route of a 400 kV power transmission line between Loviisa and Hikiae in southern Finland was reviewed in order to assess how biodiversity issues are treated and to provide suggestions on how to improve the effectiveness of treatment of biodiversity issues in impact assessment of linear development projects. The review covered the whole assessment process, including interviews of stakeholders, participation in the interest group meetings and review of all documents from the project. The baseline studies and assessment of direct impacts in the case study were detailed but the documentation, both the assessment programme and the assessment report, only gave a partial picture of the assessment process. All existing information, baseline survey and assessment methods should be addressed in the scoping phase in order to promote interaction between all stakeholders. In contrast to the assessment of the direct effects, which first emphasized impacts on the nationally important and protected flying squirrel but later expanded to deal with the assessment of impacts on ecologically important sites, the indirect and cumulative impacts of the power line were poorly addressed. The public was given the opportunity to become involved in the EIA process. However, they were more concerned with impacts on their properties and less so on biodiversity and species protection issues. This suggests that the public needs to become more informed about locally important features of biodiversity.

  4. On the Energy Overhead of Mobile Storage Systems Anirudh Badam*

    E-Print Network [OSTI]

    Narasayya, Vivek

    On the Energy Overhead of Mobile Storage Systems Jing Li Anirudh Badam* Ranveer Chandra* Steven the energy consumption of the storage stack on mobile platforms. We conduct several experiments on mobile plat- forms to analyze the energy requirements of their re- spective storage stacks. Software storage

  5. An Approach for Reduction of the Security Overhead in Smart Grid Communication Infrastructure Employing Dedicated Encryption

    E-Print Network [OSTI]

    Kavcic, Aleksandar

    An Approach for Reduction of the Security Overhead in Smart Grid Communication Infrastructure for data secu- rity within the Smart Grid communications infrastructure. A significant part communication channels. Keywords--Smart Grid; information-communication infras- tructure; overheads; data

  6. INTEGRATED VERTICAL AND OVERHEAD DECONTAMINATION (IVOD) SYSTEM

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.

    2001-01-01T23:59:59.000Z

    The deactivation and decommissioning of 1200 buildings within the U.S. Department of Energy-Office of Environmental Management complex will require the disposition of a large quantity of contaminated concrete and metal surfaces. It has been estimated that 23 million cubic meters of concrete and over 600,000 tons of metal will need disposition. The disposition of such large quantities of material presents difficulties in the area of decontamination and characterization. The final disposition of this large amount of material will take time and money as well as risk to the D&D work force. A single automated system that would decontaminate and characterize surfaces in one step would not only reduce the schedule and decrease cost during D&D operations but would also protect the D&D workers from unnecessary exposures to contaminated surfaces. This report summarizes the activities performed during FY00 and describes the planned activities for FY01. Accomplishments for FY00 include the following: Development and field-testing of characterization system; Completion of Title III design of deployment platform and decontamination unit; In-house testing of deployment platform and decontamination unit; Completion of system integration design; Identification of deployment site; and Completion of test plan document for deployment of IVOD at Rancho Seco nuclear power facility.

  7. Tucson Electric Power Company Sahuarita-Nogales Transmission Line Draft Environmental Impact Statement

    SciTech Connect (OSTI)

    N /A

    2003-08-27T23:59:59.000Z

    Tucson Electric Power Company (TEP) has applied to the U.S. Department of Energy (DOE) for a Presidential Permit to construct and operate a double-circuit, 345,000-volt (345-kV) electric transmission line across the United States border with Mexico. Under Executive Order (EO) 10485 of September 3, 1953, as amended by EO 12038 of February 3, 1978, a Presidential Permit is required to construct, connect, operate, or maintain facilities at the U.S. international border for the transmission of electric energy between the United States and a foreign country. DOE has determined that the issuance of a Presidential Permit to TEP for the proposed project would constitute a major Federal action that may have a significant impact on the environment within the meaning of the ''National Environmental Policy Act of 1969'' (NEPA) 42 United States Code (U.S.C.) {section}4321 et seq. For this reason, DOE has prepared this Draft Environmental Impact Statement (EIS) to evaluate potential environmental impacts from the proposed Federal action (granting a Presidential Permit for the proposed transmission facilities) and reasonable alternatives, including the No Action Alternative. This EIS was prepared in accordance with Section 102(2)(c) of NEPA, Council of Environmental Quality (CEQ) regulations (40 Code of Federal Regulations [CFR] 1500-1508), and DOE NEPA Implementing Procedures (10 CFR 1021). DOE is the lead Federal Agency, as defined by 40 CFR 1501.5. The U.S. Department of Agriculture Forest Service (USFS), the Bureau of Land Management (BLM) of the U.S. Department of the Interior, and the U.S. Section of the International Boundary and Water Commission, U.S. and Mexico (USIBWC), are cooperating agencies. Each of these organizations will use the EIS for its own NEPA purposes, as described in the Federal Agencies' Purpose and Need and Authorizing Actions section of this summary. The 345-kV double-circuit transmission line would consist of twelve transmission line wires, or conductors, and two neutral ground wires that would provide both lightning protection and fiber optic communications, on a single set of support structures. The transmission line would originate at TEP's existing South Substation (which TEP would expand), in the vicinity of Sahuarita, Arizona, and interconnect with the Citizens Communications (Citizens) system at a Gateway Substation that TEP would construct west of Nogales, Arizona. The double-circuit transmission line would continue from the Gateway Substation south to cross the U.S.-Mexico border and extend approximately 60 miles (mi) (98 kilometers [km]) into the Sonoran region of Mexico, connecting with the Comision Federal de Electricidad (CFE, the national electric utility of Mexico) at CFE's Santa Ana Substation.

  8. Approximate logic circuits for low overhead, non-intrusive concurrent error detection

    E-Print Network [OSTI]

    Mohanram, Kartik

    Approximate logic circuits for low overhead, non-intrusive concurrent error detection Mihir R for the synthesis of approximate logic circuits. A low overhead, non-intrusive solution for concurrent error as proposed in this paper. A low overhead, non-intrusive solution for CED based on ap- proximate

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

    E-Print Network [OSTI]

    Akinnikawe, Ayorinde

    2009-05-15T23:59:59.000Z

    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...

  10. Line-Focus Solar Power Plant Cost Reduction Plan (Milestone Report)

    SciTech Connect (OSTI)

    Kutscher, C.; Mehos, M.; Turchi, C.; Glatzmaier, G.; Moss, T.

    2010-12-01T23:59:59.000Z

    Line-focus solar collectors, in particular parabolic trough collectors, are the most mature and proven technology available for producing central electricity from concentrated solar energy. Because this technology has over 25 years of successful operational experience, resulting in a low perceived risk, it is likely that it will continue to be a favorite of investors for some time. The concentrating solar power (CSP) industry is developing parabolic trough projects that will cost billions of dollars, and it is supporting these projects with hundreds of millions of dollars of research and development funding. While this technology offers many advantages over conventional electricity generation -- such as utilizing plentiful domestic renewable fuel and having very low emissions of greenhouse gases and air pollutants -- it provides electricity in the intermediate power market at about twice the cost of its conventional competitor, combined cycle natural gas. The purpose of this document is to define a set of activities from fiscal year 2011 to fiscal year 2016 that will make this technology economically competitive with conventional means.

  11. Testing the photoionization models of powerful radio galaxies: Mixed line-emitting media in 3C 321

    E-Print Network [OSTI]

    T. G. Robinson; C. N. Tadhunter; D. J. Axon; A. Robinson

    2000-05-10T23:59:59.000Z

    The photoionization models for the narrow emission line regions of powerful radio galaxies have yet to be tested in depth. To this end, we present high-quality long-slit spectroscopy of the powerful double-nucleus radio galaxy 3C 321. The data have good enough spatial resolution to be able to trace the variation in emission-line properties on kpc scales. Continuum modelling and subtraction enables the faint emission line fluxes to be measured in several regions across the emission line nebula. We plot diagnostic line-ratio diagrams and compare them with the predictions of various photoionization models, finding that the data is best fit by models which assume a mixture of optically thin and thick clouds illuminated by a power-law continuum. The emission line kinematics, line ratios and deduced physical conditions show remarkably little variation across the source. We deduce a mean electron density of 400 +/- 120 cm-3 and a mean temperature of 11500 +/- 1500 K. Assuming a single population of optically thick line-emitting clouds, we calculate a mean photoionization parameter of (1.1 +/- 0.5) x 10e-2 and hence a photoionizing photon luminosity of Q ~ 10e55 -- 10e56 photon/s/sr. This indicates a central engine as luminous as that of the powerful quasar 3C 273, yet there is no evidence for such an energetically prolific central engine at either far-infrared or radio wavelengths. We therefore conclude that the mixed-media models, which give Q ~ 5 x 10e53 -- 5 x 10e54, represent a more likely scenario. As a by-product of the continuum subtraction we infer that young stellar populations account for ~ 0.4% of the visible stellar mass in the galaxy, and that these populations are spatially extended.

  12. Big George to Carter Mountain 115-kV transmission line project, Park and Hot Springs Counties, Wyoming. Environmental Assessment

    SciTech Connect (OSTI)

    Not Available

    1994-02-01T23:59:59.000Z

    The Western Area Power Administration (Western) is proposing to rebuild, operate, and maintain a 115-kilovolt (kV) transmission line between the Big George and Carter Mountain Substations in northwest Wyoming (Park and Hot Springs Counties). This environmental assessment (EA) was prepared in compliance with the National Environmental Policy Act (NEPA) and the regulations of the Council on Environmental Quality (CEQ) and the Department of Energy (DOE). The existing Big George to Carter Mountain 69-kV transmission line was constructed in 1941 by the US Department of Interior, Bureau of Reclamation, with 1/0 copper conductor on wood-pole H-frame structures without an overhead ground wire. The line should be replaced because of the deteriorated condition of the wood-pole H-frame structures. Because the line lacks an overhead ground wire, it is subject to numerous outages caused by lightning. The line will be 54 years old in 1995, which is the target date for line replacement. The normal service life of a wood-pole line is 45 years. Under the No Action Alternative, no new transmission lines would be built in the project area. The existing 69-kV transmission line would continue to operate with routine maintenance, with no provisions made for replacement.

  13. Stability effects of frequency controllers and transmission line configurations on power systems with integration of wind power

    E-Print Network [OSTI]

    Abdelhalim, Hussein Mohamed

    2012-01-01T23:59:59.000Z

    This thesis investigates the stability effects of the integration of wind power on multi-machine power systems. First, the small-signal stability effects of turbine governors connected to synchronous generators in the ...

  14. PEV-based P-Q Control in Line Distribution Networks with High Requirement for Reactive Power Compensation

    E-Print Network [OSTI]

    Huang, Jianwei

    no P-Q control is conducted at PEV charging stations. Keywords--Plug-in electric vehicles, reactive1 PEV-based P-Q Control in Line Distribution Networks with High Requirement for Reactive Power-Rad, Member, IEEE, and Jianwei Huang, Senior Member, IEEE Abstract--While plug-in electric vehicles (PEVs

  15. CEM 2010, April 7-9 2010, Limoges France 1 Abstract--Power Line Communication (PLC) is a technique

    E-Print Network [OSTI]

    Brest, Université de

    CEM 2010, April 7-9 2010, Limoges France 1 Abstract-- Power Line Communication (PLC) is a technique used to deliver information over the electrical networks. The capacity and performance of PLC has PLC systems and radio broadcasters. Due to their dispersive nature, the PLC channels offer a rich

  16. Path-sensitive analysis for reducing rollback overheads

    DOE Patents [OSTI]

    O'Brien, John K.P.; Wang, Kai-Ting Amy; Yamashita, Mark; Zhuang, Xiaotong

    2014-07-22T23:59:59.000Z

    A mechanism is provided for path-sensitive analysis for reducing rollback overheads. The mechanism receives, in a compiler, program code to be compiled to form compiled code. The mechanism divides the code into basic blocks. The mechanism then determines a restore register set for each of the one or more basic blocks to form one or more restore register sets. The mechanism then stores the one or more register sets such that responsive to a rollback during execution of the compiled code. A rollback routine identifies a restore register set from the one or more restore register sets and restores registers identified in the identified restore register set.

  17. TAUOVERSUPERMON: LOW-OVERHEAD ONLINE PARALLEL PERFORMANCE MONITORING

    SciTech Connect (OSTI)

    SOTTILE, MATTHEW JOSEPH [Los Alamos National Laboratory; NATARAJ, AROON [Los Alamos National Laboratory; MALONY, ALLEN [Los Alamos National Laboratory; MORRIS, ALAN [Los Alamos National Laboratory; SHENDE, SAMEER [Los Alamos National Laboratory

    2007-01-30T23:59:59.000Z

    Online or Real-time application performance monitoring allows tracking performance characteristics during execution as opposed to doing so post-mortem. This opens up several possibilities otherwise unavailable such as real-time visualization and application performance steering that can be useful in the context of long-running applications. Two fundamental components that constitute such a performance monitor are the measurement and transport systems. The former captures performance metrics of individual contexts (processes, threads). The latter enables querying the parallel/distributed state from the different contexts and also allows measurement control. As HPC systems grow in size and complexity, the key challenge is to keep the online performance monitor scalable and low overhead while still providing a useful performance reporting capability. We adapt and combine two existing, mature systems - Tuning and Analysis Utility (TAU) and Supermon - to address this problem. Tau performs the measurement while Supermon is used to collect the distributed measurement state. Our experiments show that this novel approach of using a cluster-monitor, Supermon, as the transport for online performance data from Tau leads to very low-overhead application monitoring as well as other beneits unavailable from using a traditional transport such as NFS.

  18. CLOMP: Accurately Characterizing OpenMP Application Overheads

    SciTech Connect (OSTI)

    Bronevetsky, G; Gyllenhaal, J; de Supinski, B R

    2008-11-10T23:59:59.000Z

    Despite its ease of use, OpenMP has failed to gain widespread use on large scale systems, largely due to its failure to deliver sufficient performance. Our experience indicates that the cost of initiating OpenMP regions is simply too high for the desired OpenMP usage scenario of many applications. In this paper, we introduce CLOMP, a new benchmark to characterize this aspect of OpenMP implementations accurately. CLOMP complements the existing EPCC benchmark suite to provide simple, easy to understand measurements of OpenMP overheads in the context of application usage scenarios. Our results for several OpenMP implementations demonstrate that CLOMP identifies the amount of work required to compensate for the overheads observed with EPCC.We also show that CLOMP also captures limitations for OpenMP parallelization on SMT and NUMA systems. Finally, CLOMPI, our MPI extension of CLOMP, demonstrates which aspects of OpenMP interact poorly with MPI when MPI helper threads cannot run on the NIC.

  19. Radiological Assessment for the Removal of Legacy BPA Power Lines that Cross the Hanford Site

    SciTech Connect (OSTI)

    Millsap, William J. [Mission Support Alliance, Richland, WA (United States); Brush, Daniel J. [Mission Support Alliance, Richland, WA (United States)

    2013-11-13T23:59:59.000Z

    This paper discusses some radiological field monitoring and assessment methods used to assess the components of an old electrical power transmission line that ran across the Hanford Site between the production reactors area (100 Area) and the chemical processing area (200 Area). This task was complicated by the presence of radon daughters -- both beta and alpha emitters -- residing on the surfaces, particularly on the surfaces of weathered metals and metals that had been electrically-charged. In many cases, these activities were high compared to the DOE Surface Contamination Guidelines, which were used as guides for the assessment. These methods included the use of the Toulmin model of argument, represented using Toulmin diagrams, to represent the combined force of several strands of evidences, rather than a single measurement of activity, to demonstrate beyond a reasonable doubt that no or very little Hanford activity was present and mixed with the natural activity. A number of forms of evidence were used: the overall chance of Hanford contamination; measurements of removable activity, beta and alpha; 1-minute scaler counts of total surface activity, beta and alpha, using "background makers"; the beta activity to alpha activity ratios; measured contamination on nearby components; NaI gamma spectral measurements to compare uncontaminated and potentially-contaminated spectra, as well as measurements for the sentinel radionuclides, Am- 241 and Cs-137 on conducting wire; comparative statistical analyses; and in-situ measurements of alpha spectra on conducting wire showing that the alpha activity was natural Po-210, as well as to compare uncontaminated and potentially-contaminated spectra.

  20. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 51, NO. 9, SEPTEMBER 2003 2353 A Radar Cross-Section Model for Power Lines at

    E-Print Network [OSTI]

    Sarabandi, Kamal

    if not impossible. The literature concerning analytical evaluation of RCS of power lines is limited to simple models Agreement DAAL01-96-2-001 through collaborative participation in the Advanced Sensors Consortium. Also in [5] measurements of infrared reflectance from power lines are reported. Based on th

  1. Wireless Sensor Network for Electric Transmission Line Monitoring

    SciTech Connect (OSTI)

    Alphenaar, Bruce

    2009-06-30T23:59:59.000Z

    Generally, federal agencies tasked to oversee power grid reliability are dependent on data from grid infrastructure owners and operators in order to obtain a basic level of situational awareness. Since there are many owners and operators involved in the day-to-day functioning of the power grid, the task of accessing, aggregating and analyzing grid information from these sources is not a trivial one. Seemingly basic tasks such as synchronizing data timestamps between many different data providers and sources can be difficult as evidenced during the post-event analysis of the August 2003 blackout. In this project we investigate the efficacy and cost effectiveness of deploying a network of wireless power line monitoring devices as a method of independently monitoring key parts of the power grid as a complement to the data which is currently available to federal agencies from grid system operators. Such a network is modeled on proprietary power line monitoring technologies and networks invented, developed and deployed by Genscape, a Louisville, Kentucky based real-time energy information provider. Genscape measures transmission line power flow using measurements of electromagnetic fields under overhead high voltage transmission power lines in the United States and Europe. Opportunities for optimization of the commercial power line monitoring technology were investigated in this project to enable lower power consumption, lower cost and improvements to measurement methodologies. These optimizations were performed in order to better enable the use of wireless transmission line monitors in large network deployments (perhaps covering several thousand power lines) for federal situational awareness needs. Power consumption and cost reduction were addressed by developing a power line monitor using a low power, low cost wireless telemetry platform known as the ''Mote''. Motes were first developed as smart sensor nodes in wireless mesh networking applications. On such a platform, it has been demonstrated in this project that wireless monitoring units can effectively deliver real-time transmission line power flow information for less than $500 per monitor. The data delivered by such a monitor has during the course of the project been integrated with a national grid situational awareness visualization platform developed by Oak Ridge National Laboratory. Novel vibration energy scavenging methods based on piezoelectric cantilevers were also developed as a proposed method to power such monitors, with a goal of further cost reduction and large-scale deployment. Scavenging methods developed during the project resulted in 50% greater power output than conventional cantilever-based vibrational energy scavenging devices typically used to power smart sensor nodes. Lastly, enhanced and new methods for electromagnetic field sensing using multi-axis magnetometers and infrared reflectometry were investigated for potential monitoring applications in situations with a high density of power lines or high levels of background 60 Hz noise in order to isolate power lines of interest from other power lines in close proximity. The goal of this project was to investigate and demonstrate the feasibility of using small form factor, highly optimized, low cost, low power, non-contact, wireless electric transmission line monitors for delivery of real-time, independent power line monitoring for the US power grid. The project was divided into three main types of activity as follows; (1) Research into expanding the range of applications for non-contact power line monitoring to enable large scale low cost sensor network deployments (Tasks 1, 2); (2) Optimization of individual sensor hardware components to reduce size, cost and power consumption and testing in a pilot field study (Tasks 3,5); and (3) Demonstration of the feasibility of using the data from the network of power line monitors via a range of custom developed alerting and data visualization applications to deliver real-time information to federal agencies and others tasked with grid reliability (Tasks 6,8)

  2. Fast-wave Power Flow Along SOL Field Lines In NSTX nd The Associated Power Deposition Profile Across The SOL In Front Of The Antenna

    SciTech Connect (OSTI)

    Perkins, Roy

    2013-06-21T23:59:59.000Z

    Fast-wave heating and current drive efficiencies can be reduced by a number of processes in the vicinity of the antenna and in the scrape off layer (SOL). On NSTX from around 25% to more than 60% of the high-harmonic fast-wave power can be lost to the SOL regions, and a large part of this lost power flows along SOL magnetic field lines and is deposited in bright spirals on the divertor floor and ceiling. We show that field-line mapping matches the location of heat deposition on the lower divertor, albeit with a portion of the heat outside of the predictions. The field-line mapping can then be used to partially reconstruct the profile of lost fast-wave power at the midplane in front of the antenna, and the losses peak close to the last closed flux surface (LCFS) as well as the antenna. This profile suggests a radial standing-wave pattern formed by fast-wave propagation in the SOL, and this hypothesis will be tested on NSTX-U. Advanced RF codes must reproduce these results so that such codes can be used to understand this edge loss and to minimize RF heat deposition and erosion in the divertor region on ITER.

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

    E-Print Network [OSTI]

    Akinnikawe, Ayorinde

    2009-05-15T23:59:59.000Z

    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...

  4. Investigation of conductor swinging by wind and its application for design of compact transmission line

    SciTech Connect (OSTI)

    Tsujimoto, K.; Fujii, K.; Kubokawa, H.; Okomura, T.; Simojima, K.; Yoshioka, V.

    1982-11-01T23:59:59.000Z

    In Japan it has recently become necessary to shorten the interphase spacing in overhead transmission lines because of land limitations and economical considerations. In this connection, the authors have attempted to analyze, in-depth, the possibilities of shortened interphase spacing via conductor swinging caused by wind effects: one of the important factors in the design of more compact overhead lines. This paper describes not only the investigative results of conductor swinging that were obtained both through computer simulation and in 3 years of full scale field line testing, but also design methodology for compact overhead lines based on these results.

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

    SciTech Connect (OSTI)

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

    2009-07-15T23:59:59.000Z

    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.

  6. Reducing the quantum computing overhead with complex gate distillation

    E-Print Network [OSTI]

    Guillaume Duclos-Cianci; David Poulin

    2014-03-20T23:59:59.000Z

    In leading fault-tolerant quantum computing schemes, accurate transformation are obtained by a two-stage process. In a first stage, a discrete, universal set of fault-tolerant operations is obtained by error-correcting noisy transformations and distilling resource states. In a second stage, arbitrary transformations are synthesized to desired accuracy by combining elements of this set into a circuit. Here, we present a scheme which merges these two stages into a single one, directly distilling complex transformations. We find that our scheme can reduce the total overhead to realize certain gates by up to a few orders of magnitude. In contrast to other schemes, this efficient gate synthesis does not require computationally intensive compilation algorithms, and a straightforward generalization of our scheme circumvents compilation and synthesis altogether.

  7. Modeling the Power Distribution Network of a Virtual City and Studying the Impact of Fire on the Electrical Infrastructure

    E-Print Network [OSTI]

    Bagchi, Arijit

    2009-11-17T23:59:59.000Z

    of Conductor Sizing Based on Ampacity.................. 13 4.3. Determination of Line Parameters ................................................... 15 4.4. Formulation of Protection Scheme for Electrical Test Bed .............. 28 4.5. Assigning... ................................ 12 4.3 Underground cable burial configuration ................................................ 17 4.4 Three phase, single circuit overhead line conductor configuration......... 19 4.5 Single phase overhead line conductor configuration...

  8. SunLine Transit Agency Hydrogen-Powered Transit Buses: Third...

    Broader source: Energy.gov (indexed) [DOE]

    describes operations at SunLine Transit Agency for a protoype fuel cell bus, a prototype hydrogen hybrid interal combustion engine bus, and five new compressed natural gas buses....

  9. SunLine Transit Agency Hydrogen-Powered Transit Buses: Third Evaluation Report (Report and Appendices)

    SciTech Connect (OSTI)

    Chandler, K.; Eudy, L.

    2008-06-01T23:59:59.000Z

    This report describes operations at SunLine Transit Agency for a protoype fuel cell bus, a prototype hydrogen hybrid interal combustion engine bus, and five new compressed natural gas buses.

  10. Non-Data-Communication Overheads in MPI: Analysis on Blue Gene/P

    E-Print Network [OSTI]

    Balaji, Pavan

    consumption and heat dissipation, modern HEC systems tend to rely lesser on the performance of singleNon-Data-Communication Overheads in MPI: Analysis on Blue Gene/P P. Balaji1 , A. Chan2 , W. Gropp3 systems. In this paper, we study different non-data-communication overheads within the MPI implementation

  11. Fig. 1. Single line diagram of 3-phase distribution power system with five inverters in parallel.

    E-Print Network [OSTI]

    Silva, Filipe Faria Da

    (PV) generation, it has been showed that occasionally the PV inverters were switched off undesirably or exceeded the harmonic regulations [2]. Even though each of the PV inverter meets the grid codes, the power distribution power system with five inverters in parallel. Harmonic Stability Assessment for Multi- Paralleled

  12. EIS-0005-FS: Bonneville Power Administration Proposed FY 1979 Program, Facility Location on Supplement, Southwest Oregon Area Service, Buckley-Summer Lake 500 kV Line, Supplemental

    Broader source: Energy.gov [DOE]

    This Bonneville Power Administration document assesses the environmental impacts of constructing transmission facilities, which will coordinate with the Midpoint-Malin 500-kV line to be constructed by the Pacific Power and Light (PP&L) Company. The proposed action includes the construction of the 1.56-mile Buckley-Summer Lake 500-kV transmission line; the proposed Buckley Substation near Maupin, Oregon; and the proposed Summer Lake Substation near Silver Lake, Oregon.

  13. Analyzing and Modeling Encryption Overhead for Sensor Network Nodes

    E-Print Network [OSTI]

    Mueller, Frank

    devices in the field. Limitations in processing power, battery life, communication bandwidth and memory

  14. Electromagnetic pulse (EMP) interaction with electric power systems. Power Systems Technology Program. Final report

    SciTech Connect (OSTI)

    Zaininger, H.W.

    1984-08-01T23:59:59.000Z

    A high altitude nuclear burst, detonated at a height of 50 km or more, causes two types of electromagnetic pulses (EMP) - high altitude EMP (HEMP) and magnetohydrodynamic EMP (MHD-EMP). This high altitude EMP scenario is of principal concern when assessing the effects of EMP on electric power systems, because the total United States can be simultaneously illuminated by HEMP and MHD-EMP can cover a large area of up to several hundred kilometers in diameter. The purpose of this project was first to define typical electrical power system characteristics for EMP analysis, and second, to determine reasonable worst case EMP induced surges on overhead electric power system transmission and distribution lines for reasonable assumptions, using unclassified HEMP and MHD-EMP electric field waveforms.

  15. Line-focus solar central power system, Phase I. Final report, 29 September 1978 to 30 April 1980. Volume II. Text

    SciTech Connect (OSTI)

    Slemmons, A J

    1980-04-01T23:59:59.000Z

    The conceptual design, parametric analysis, cost and performance analysis, and a commercial assessment of a 100-MWe high-temperature line-focus central power system are presented. Parametric analyses and conceptual design of the heliostat subsystem, receiver subsystem, heat transport subsystem, energy storage subsystem, electrical power generating subsystem, and master control subsystem are included. A market analysis and development plan are given. (WHK)

  16. Microsoft Word - Broadband Over Power Lines_FINAL.06.01.10.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE SWPAURTeC:8 3. MarchFigure 1 StructureBroadband

  17. From: Laurie Smith To: Congestion Study Comments Subject: Taking of Private Property for Overhead Transmission Lines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To:Kay Foreman

  18. For the Grid and Through the Grid: The Role of Power Line Communications in the Smart Grid

    E-Print Network [OSTI]

    Galli, Stefano; Wang, Zhifang

    2010-01-01T23:59:59.000Z

    Is Power Line Communication (PLC) a good candidate for Smart Grid applications? The objective of this paper is to address this important question. To do so we provide an overview of what PLC can deliver today by surveying its history and describing the most recent technological advances in the area. We then address Smart Grid applications as instances of sensor networking and network control problems and discuss the main conclusion one can draw from the literature on these subjects. The application scenario of PLC within the Smart Grid is then analyzed in detail. Since a necessary ingredient of network planning is modeling, we also discuss two aspects of engineering modeling that relate to our question. The first aspect is modeling the PLC channel through fading models. The second aspect we review is the Smart Grid control and traffic modeling problem which allows us to achieve a better understanding of the communications requirements. Finally, this paper reports recent studies on the electrical and topologic...

  19. Reduce Overhead, Implement Energy Efficiency in Water/Wastewater

    E-Print Network [OSTI]

    Cantwell, J. C.

    2007-01-01T23:59:59.000Z

    consumption and reduced cost to industry. Reduced cost is a pleasant benefit when the cost of utility bills comes off the bottom line and if the industry is working on a 5 percent margin the actual value of the savings could be considered to be 20 times its...

  20. MECCA: A Robust Low-Overhead PUF Using Embedded Memory Array

    E-Print Network [OSTI]

    Bhunia, Swarup

    such as Intellectual Property (IP) counter-plagiarism and embedded security integration. To this end, Phys- ical using a pro- grammable word line duty cycle controller. Since most modern designs already have attacks. Passive attacks are mounted by observing side-channel information such as power consumption [2

  1. A Neural Network Model for Construction Projects Site Overhead Cost Estimating in Egypt

    E-Print Network [OSTI]

    ElSawy, Ismaail; Razek, Mohammed Abdel

    2011-01-01T23:59:59.000Z

    Estimating of the overhead costs of building construction projects is an important task in the management of these projects. The quality of construction management depends heavily on their accurate cost estimation. Construction costs prediction is a very difficult and sophisticated task especially when using manual calculation methods. This paper uses Artificial Neural Network (ANN) approach to develop a parametric cost-estimating model for site overhead cost in Egypt. Fifty-two actual real-life cases of building projects constructed in Egypt during the seven year period 2002-2009 were used as training materials. The neural network architecture is presented for the estimation of the site overhead costs as a percentage from the total project price.

  2. EIS-0442: Reauthorization of Permits, Maintenance, and Vegetation Management on Western Area Power Administration Transmission Lines on Forest Service Lands, Colorado, Nebraska, and Utah

    Broader source: Energy.gov [DOE]

    This EIS is being prepared jointly by DOE’s Western Area Power Administration and the U.S. Forest Service. The EIS evaluates the potential environmental impacts of Western’s proposed changes to vegetation management along its transmission line rights-of-way on National Forest System lands in Colorado, Utah, and Nebraska.

  3. EIS-0032: 500 kV International Transmission Line NSP-TR-1, Forbes, Minnesota to Manitoba, Canada, Northern States Power Company

    Broader source: Energy.gov [DOE]

    The Economic Regulatory Administration developed this EIS to evaluate the environmental impacts of a 500-kilovolt transmission line proposed by the Northern States Power Company to provide a transmission facility for the exchange of electrical energy between Canada and the United States.

  4. Economics of design and operation of overhead electric distribution systems

    E-Print Network [OSTI]

    Cox, Carl Clarence

    1928-01-01T23:59:59.000Z

    and high tension transmission systems. From the day of the direct current systems, where the amount of the load governed the size of the conductor, to the present day systems of 11 kv, the prac- tice has been to build a system to give service.... It is just as important to mske sure th!t the conductors and pole line hardw . re are of sufzicient strength to withstand the same hardships. The selection of material i" governed more or less by what h s been tried or tested by other engineers. As a...

  5. A multiconductor model for determining the response of power transmission and distribution lines to a high altitude electromagnetic pulse (HEMP)

    SciTech Connect (OSTI)

    Tesche, F.M.; Barnes, P.R.

    1988-01-01T23:59:59.000Z

    A calculation model for electromagnetic pulse coupling to transmission and transmission line is discussed. Sample calculations for a 345 kV transmission line are given. 3 refs., 8 figs.

  6. Power spectrum estimates of high frequency noise generated by high impedance arcing faults on distribution systems / by Thomas James Talley

    E-Print Network [OSTI]

    Talley, Thomas James

    1979-01-01T23:59:59.000Z

    faults, and to search for possible solutions, Pennsylvania Power and Light Company (PP&L) gathered data on instances of downed conductors. [ 4 ] In a breakdown of 390 cases of downed conductors on 12 KV overhead distribution lines in 1974...-75, they found that over- current protective devices did not operate for 23%%d of the cases where the feeder had bare wire conductors, and 727. of the cases where the feeder had XLP covered conductors. These figures indicate the severity of the problem...

  7. Reducing the Replacement Overhead on COMA Protocols for Workstation-Based Architectures

    E-Print Network [OSTI]

    Llanos, Diego R.

    Reducing the Replacement Overhead on COMA Protocols for Workstation-Based Architectures Diego R discuss the behavior of the replacement mechanism of well-known COMA protocols applied to a loosely replacement mecha- nism in order to select the destination node of a replacement transaction without

  8. Compiler-Directed Region-Based Security for Low-Overhead Software Vijay Kongubangaram

    E-Print Network [OSTI]

    Simha, Rahul

    Compiler-Directed Region-Based Security for Low-Overhead Software Protection Vijay Kongubangaram Department of Computer Science The George Washington University Washington, DC vijaykpk@gwu.edu Olga Gelbart@gwu.edu Abstract Software security has become a prominent area of re- search in recent years, with research efforts

  9. Adaptive SSL: Design, Implementation and Overhead Analysis submission for Work-in-Progress/Application Paper track.

    E-Print Network [OSTI]

    Newcastle upon Tyne, University of

    Adaptive SSL: Design, Implementation and Overhead Analysis submission for Work an adaptation controller for SSL (Secure Socket Layer), called Adaptive SSL. 1 Introduction Applications adaptation of the Secure Socket Layer (SSL) protocol [3]. Adaptive SSL (ASSL) aims to provide appropriate se

  10. A PiggyBacking Approach to Reduce Overhead in Sensor Network Gossiping

    E-Print Network [OSTI]

    Gupta, Indranil

    A PiggyBacking Approach to Reduce Overhead in Sensor Network Gossiping Ercan Ucan, Nathanael Gossiping, PiggyBacking This work was supported in part by NSF CAREER grant CNS-0448246 and in part by NSF networks. Variations of gossiping have been used for basic broadcasting [6, 8, 17], code propaga- tion [10

  11. Effective Methods in Reducing Communication Overheads in Solving

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work4/11ComputationalEdNERSC:Effect of0/2002 Yun (Helen)

  12. Application of the Global Positioning System to the Measurement of Overhead Power Transmission Conductor Sag

    E-Print Network [OSTI]

    , incident solar radiation, limiting physical conductor characteristics, and conductor configuration renewed importance because some companies are marketing transmission access. A widely used system

  13. DAMAGE DETECTION STRATEGIES IN STRUCTURAL HEALTH MONITORING OF OVERHEAD POWER TRANSMISSION SYSTEM

    E-Print Network [OSTI]

    Boyer, Edmond

    vibrations, conductors galloping, icing, and also include sabotage or terrorist attacks. It is impossible

  14. Abstract--The safe operation of electrical power systems is an ongoing problem. Despite the existing defense lines in the

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Abstract--The safe operation of electrical power systems is an ongoing problem. Despite consumer, Smart grids, Soft load shedding, Voltage stability. I. INTRODUCTION N electrical power systems and operating rules, so that the power system is able to face at each instant the current uncertainties

  15. Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers

    SciTech Connect (OSTI)

    Xu, TengFang T.

    2009-05-01T23:59:59.000Z

    Scientific and enterprise data centers, IT equipment product development, and research data center laboratories typically require continuous cooling to control inlet air temperatures within recommended operating levels for the IT equipment. The consolidation and higher density aggregation of slim computing, storage and networking hardware has resulted in higher power density than what the raised-floor system design, coupled with commonly used computer rack air conditioning (CRAC) units, was originally conceived to handle. Many existing data centers and newly constructed data centers adopt CRAC units, which inherently handle heat transfer within data centers via air as the heat transfer media. This results in energy performance of the ventilation and cooling systems being less than optimal. Understanding the current trends toward higher power density in IT computing, more and more IT equipment manufacturers are designing their equipment to operate in 'conventional' data center environments, while considering provisions of alternative cooling solutions to either their equipment or supplemental cooling in rack or row systems. Naturally, the trend toward higher power density resulting from current and future generations of servers has, in the meanwhile, created significant opportunities for precision cooling suppliers to engineer and manufacture packaged modular and scalable systems. The modular and scalable cooling systems aim at significantly improving efficiency while addressing the thermal challenges, improving reliability, and allowing for future needs and growth. Such pre-engineered and manufactured systems may be a significant improvement over current design; however, without an energy efficiency focus, their applications could also lead to even lower energy efficiencies in the overall data center infrastructure. The overall goal of the project supported by California Energy Commission was to characterize four commercially available, modular cooling systems installed in a data center. Such modular cooling systems are all scalable localized units, and will be evaluated in terms of their operating energy efficiency in a real data center, respectively, as compared to the energy efficiency of traditional legacy data center cooling systems. The technical objective of this project was to evaluate the energy performance of one of the four commercially available modular cooling systems installed in a data center in Sun Microsystems, Inc. This report is the result of a test plan that was developed with the industrial participants' input, including specific design and operating characteristics of the selected modular localized cooling solution provided by vendor 1. The technical evaluation included monitoring and measurement of selected parameters, and establishing and calculating energy efficiency metrics for the selected cooling product, which is a modular, scalable overhead cooling system. The system was tested in a hot/cold aisle environment without separation, or containment or the hot or cold aisles. The scope of this report is to quantify energy performance of the modular cooling unit in operation as it corresponds to a combination of varied server loads and inlet air temperatures. The information generated from this testing when combined with a concurrent research study to document the energy efficiency of the host data center's central chilled water cooling plant can be used to estimate potential energy savings from implementing modular cooling compared to conventional cooling in data centers.

  16. REPORT ON THE ANALYSIS OF WAC SAMPLES FROM EVAPORATOR OVERHEADS FOR 2011

    SciTech Connect (OSTI)

    Washington, A.

    2012-03-29T23:59:59.000Z

    This report tabulates the chemical analysis of the 3H, 2H and 2F evaporator overhead samples including the inorganic, organic, and radionuclide species according the ETP WAC (rev.4). In addition, the physical properties including pH, total suspended solids, and average particle size are listed for each sample. The report identifies all sample receipt dates, preparation methods, and analyses completed to accumulate these values. All values were found to be within the ETP WAC specifications for WWCT except for the {sup 137}Cs concentration for the 2F sample which was slightly above the limit ({approx}5%). However, tank farm personnel sample each tank overhead for beta/gamma prior to transfer using a pulse height analyzer and these field readings were all well within limits. Additional actions will be taken to help understand the reason in the discrepancy of the field measurement versus laboratory analysis.

  17. Characterization Results For The 2013 HTF 3H Evaporator Overhead Samples

    SciTech Connect (OSTI)

    Washington, A. L. II

    2013-12-04T23:59:59.000Z

    This report tabulates the radiochemical analysis of the 3H evaporator overhead sample for {sup 137}Cs, {sup 90}Sr, and {sup 129}I to meet the requirements in the Effluent Treatment Project (ETP) Waste Acceptance Criteria (WAC) (rev. 6). This report identifies the sample receipt date, preparation method, and analysis performed in the accumulation of the listed values. All data was found to be within the ETP WAC (rev. 6) specification for the Waste Water Collection Tanks (WWCT).

  18. Utility Lines and Facilities (Montana)

    Broader source: Energy.gov [DOE]

    These regulations apply to the construction of utility and power lines and facilities. They address the use of public right-of-ways for such construction, underground power lines, and construction...

  19. Development of a hybrid intelligent system for on-line real-time monitoring of nuclear power plant operations

    E-Print Network [OSTI]

    Yildiz, Bilge, 1976-

    2003-01-01T23:59:59.000Z

    A nuclear power plant (NPP) has an intricate operational domain involving systems, structures and components (SSCs) that vary in scale and complexity. Many of the large scale SSCs contribute to the lost availability in the ...

  20. Measurement of Hydrogen Balmer Line Broadening and Thermal Power Balances of Noble Gas-Hydrogen Discharge Plasmas

    E-Print Network [OSTI]

    talyst atoms or ions which ionize at integer multiples of the potential energy of atomic hydrogen (St, He + , or Ar + ) caused an increase in power; whereas, no excess power was observed in the case of krypton which does not provide a reaction with a net enthalpy of a multiple of the potential energy of atomic hydrogen under these conditions. For a power input to the glow discharge of 110 W, the excess output power of mixtures of strontium with argon- hydrogen (95/5%), strontium with hydrogen, strontium with helium-hydrogen (95/5%), and argon-hydrogen (95/5%) was 75, 58, 50, and 28 W, respectively, based a comparison of the temperature rise of the cell with krypton-hydrogen mixture (95/5%) and krypton alone. The input power was varied to find conditions that resulted in the optimal output for the strontium- hydrogen plasma. At 136 W input, the excess power significantly increased to 184 W. These studies provide a useful comparison of catalysts for the optimization of the catal

  1. Environmental Assessment for Electrical Power System Upgrades at Los Alamos National Laboratory, Los Alamos, New Mexico - Final Document

    SciTech Connect (OSTI)

    N /A

    2000-03-09T23:59:59.000Z

    The ''National Environmental Policy Act of 1969'' (NEPA) requires Federal agency officials to consider the environmental consequences of their proposed actions before decisions are made. In complying with NEPA, the United States (U.S.) Department of Energy (DOE) follows the Council on Environmental Quality (CEQ) regulations (40 Code of Federal Regulations [CFR] 1500-1508) and DOE's NEPA implementing procedures (10 CFR 1021). The purpose of an Environmental Assessment (EA) is to provide Federal decision makers with sufficient evidence and analysis to determine whether to prepare an Environmental Impact Statement (EIS) or issue a Finding of No Significant Impact. In this case, the DOE decision to be made is whether to construct and operate a 19.5-mile (mi) (31-kilometer [km]) electric transmission line (power line) reaching from the Norton Substation, west across the Rio Grande, to locations within the Los Alamos National Laboratory (LANL) Technical Areas (TAs) 3 and 5 at Los Alamos, New Mexico. The construction of one electric substation at LANL would be included in the project as would the construction of two line segments less than 1,200 feet (ft) (366 meters [m]) long that would allow for the uncrossing of a portion of two existing power lines. Additionally, a fiber optics communications line would be included and installed concurrently as part of the required overhead ground conductor for the power line. The new power line would improve the reliability of electric service in the LANL and Los Aktrnos County areas as would the uncrossing of the crossed segments of the existing lines. Additionally, installation of the new power line would enable the LANL and the Los Alamos County electric grid, which is a shared resource, to be adapted to accommodate the future import of increased power when additional power service becomes available in the northern New Mexico area. Similarly, the fiber optics line would allow DOE to take advantage of future opportunities in enhanced communications services. The objectives of this EA are to (1) describe the baseline environmental conditions at the proposed power line location, (2) analyze the potential effects to the existing environment from construction, operation, and maintenance of a new power line, and (3) compare the effects of the Proposed Action and the four action alternatives to the No Action Alternative. In addition, the EA provides DOE with environmental information that could be used in developing mitigative actions to minimize or avoid adverse effects to the integrity of the human environment and natural ecosystems should DOE decide to proceed with construction and operation of the new power line. Ultimately, the goal of NEPA and this EA is to aid DOE officials in making decisions based on understanding the environmental consequences of their decision.

  2. Control of single-phase islanded PV/battery streetlight cluster based on Power-Line Signaling

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    units in a micro- grid should not be only determined by load demand, but also by the available power storage systems (ESS). Specifically, the recharging process of secondary battery, the most prominent ESS of dis- tributed storage systems (DS), including both renewable and non-renewable sources, like ESS [1

  3. Nonlinear control of a coupled PDE/ODE system modeling a switched power converter with a transmission line

    E-Print Network [OSTI]

    Valein, Julie - Institut de Mathématiques Élie Cartan, Université Henri Poincaré

    modes techniques [18]. Recently, hybrid approaches have been proposed for stabilization and optimal-smooth dynamic optimization problem [11]. Unfortunately, the development of a hybrid approach for stabilization recently, such systems appeared in the context of energy management and more precisely in modeling power

  4. On-line testing of calibration of process instrumentation channels in nuclear power plants. Phase 2, Final report

    SciTech Connect (OSTI)

    Hashemian, H.M. [Analysis and Measurement Services Corp., Knoxville, TN (United States)

    1995-11-01T23:59:59.000Z

    The nuclear industry is interested in automating the calibration of process instrumentation channels; this report provides key results of one of the sponsored projects to determine the validity of automated calibrations. Conclusion is that the normal outputs of instrument channels in nuclear plants can be monitored over a fuel cycle while the plant is operating to determine calibration drift in the field sensors and associated signal conversion and signal conditioning equipment. The procedure for on-line calibration tests involving calculating the deviation of each instrument channel from the best estimate of the process parameter that the instrument is measuring. Methods were evaluated for determining the best estimate. Deviation of each signal from the best estimate is updated frequently while the plant is operating and plotted vs time for entire fuel cycle, thereby providing time history plots that can reveal channel drift and other anomalies. Any instrument channel that exceeds allowable drift or channel accuracy band is then scheduled for calibration during a refueling outage or sooner. This provides calibration test results at the process operating point, one of the most critical points of the channel operation. This should suffice for most narrow-range instruments, although the calibration of some instruments can be verified at other points throughout their range. It should be pointed out that the calibration of some process signals such as the high pressure coolant injection flow in BWRs, which are normally off- scale during plant operation, can not be tested on-line.

  5. Heavy duty insulator assemblies for 500-kV bulk power transmission line with large diameter octagonalbundled conductor

    SciTech Connect (OSTI)

    Tsujimoto, K.; Hayase, I.; Hirai, J.; Inove, M.; Naito, K.; Yukino, T.

    1982-11-01T23:59:59.000Z

    This paper describes the design procedure and the results of field tests on mechanical performances of insulator assemblies newly developed to support octagonal-bundled conductors for 500-kV bulk power transmission. Taking account of conductor-motion-induced peak tensile load, fatigue, torsional torque and others, a successful design has been achieved in two prototype assemblies for such heavy mechanical duties as encountered during conductor galloping or swing. This has been proved throughout three years of the field tests.

  6. > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < 1 The Utilization of Satellite Images to Identify

    E-Print Network [OSTI]

    The Utilization of Satellite Images to Identify Trees Endangering Transmission Lines Y. Kobayashi, G. G. Karady, G to determine tree interference with overhead transmission lines. Index Terms-- satellite images, tree trimming a transmission lines may inter- fere with circuit operation and may produce short cir- cuits. As a typical

  7. Environmental Assessment for Central Power and Light Company`s proposed Military Highway-CFE tie 138/69-kV transmission line project Brownsville, Cameron County, Texas

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    Central Power and Light Company (CPL) intends to upgrade its existing transmission line ties with the Commision Federal de Electricidad (CFE) system in Mexico. CPL currently has a single 69-kilovolt (kV) transmission line in the Brownsville area which connects CPL`s system with the system of CFE. This existing line runs between the Brownsville Switching Station, located on Laredo Road in Brownsville, Cameron County, Texas, and an existing CFE 69-kV line at the Rusteberg Bend of the Rio Grande in Cameron County. Under current conditions of need, the existing 69-kV line does not possess sufficient capability to engage in appropriate power exchanges. Therefore, CPL is proposing to build a new line to link up with CFE. This proposed line would be a double-circuit line, which would (1) continue (on a slightly relocated route) the existing 69-kV tie from CPL`s Brownsville Switching Station to CFE`s facilities, and (2) add a 138-kV tie from the Military Highway Substation, located on Military Highway (US Highway 281), to CFE`s facilities. The proposed 138/69-kV line, which will be constructed and operated by CPL, will be built primarily on steel single-pole structures within an average 60-foot (ft) wide right-of-way (ROW). It will be approximately 6900--9200 ft (1.3--1.7 miles) in length, depending on the alternative route constructed.

  8. Demonstration of a Novel Synchrophasor-based Situational Awareness System: Wide Area Power System Visualization, On-line Event Replay and Early Warning of Grid Problems

    SciTech Connect (OSTI)

    Rosso, A.

    2012-12-31T23:59:59.000Z

    Since the large North Eastern power system blackout on August 14, 2003, U.S. electric utilities have spent lot of effort on preventing power system cascading outages. Two of the main causes of the August 14, 2003 blackout were inadequate situational awareness and inadequate operator training In addition to the enhancements of the infrastructure of the interconnected power systems, more research and development of advanced power system applications are required for improving the wide-area security monitoring, operation and planning in order to prevent large- scale cascading outages of interconnected power systems. It is critically important for improving the wide-area situation awareness of the operators or operational engineers and regional reliability coordinators of large interconnected systems. With the installation of large number of phasor measurement units (PMU) and the related communication infrastructure, it will be possible to improve the operators’ situation awareness and to quickly identify the sequence of events during a large system disturbance for the post-event analysis using the real-time or historical synchrophasor data. The purpose of this project was to develop and demonstrate a novel synchrophasor-based comprehensive situational awareness system for control centers of power transmission systems. The developed system named WASA (Wide Area Situation Awareness) is intended to improve situational awareness at control centers of the power system operators and regional reliability coordinators. It consists of following main software modules: • Wide-area visualizations of real-time frequency, voltage, and phase angle measurements and their contour displays for security monitoring. • Online detection and location of a major event (location, time, size, and type, such as generator or line outage). • Near-real-time event replay (in seconds) after a major event occurs. • Early warning of potential wide-area stability problems. The system has been deployed and demonstrated at the Tennessee Valley Authority (TVA) and ISO New England system using real-time synchrophasor data from openPDC. Apart from the software product, the outcome of this project consists of a set of technical reports and papers describing the mathematical foundations and computational approaches of different tools and modules, implementation issues and considerations, lessons learned, and the results of lidation processes.

  9. Means and method for characterizing high power, ultra short laser pulses in a real time, on line manner

    DOE Patents [OSTI]

    Veligdan, James T. (Manorville, NY)

    1994-01-01T23:59:59.000Z

    An ultra short (<10 ps), high power laser pulse is temporally characterized by a system that uses a physical measurement of a wavefront that has been altered in a known manner. The system includes a first reflection switch to remove a portion of a pulse from a beam of pulses, then includes a second reflection switch, operating in a mode that is opposite to the first reflection switch, to slice off a portion of that removed portion. The sliced portion is then directed to a measuring device for physical measurement. The two reflection switches are arranged with respect to each other and with respect to the beam of ultra short pulses such that physical measurement of the sliced portion is related to the temporal measurement of the ultra short pulse by a geometric or trigonometric relationship. The reflection switches are operated by a control pulse that is directed to impinge on each of the reflection switches at a 90.degree. angle of incidence.

  10. Means and method for characterizing high power, ultra short laser pulses in a real time, on line manner

    DOE Patents [OSTI]

    Veligdan, J.T.

    1994-03-08T23:59:59.000Z

    An ultra short (<10 ps), high power laser pulse is temporally characterized by a system that uses a physical measurement of a wavefront that has been altered in a known manner. The system includes a first reflection switch to remove a portion of a pulse from a beam of pulses, then includes a second reflection switch, operating in a mode that is opposite to the first reflection switch, to slice off a portion of that removed portion. The sliced portion is then directed to a measuring device for physical measurement. The two reflection switches are arranged with respect to each other and with respect to the beam of ultra short pulses such that physical measurement of the sliced portion is related to the temporal measurement of the ultra short pulse by a geometric or trigonometric relationship. The reflection switches are operated by a control pulse that is directed to impinge on each of the reflection switches at a 90[degree] angle of incidence. 8 figures.

  11. Commentary on A Conceptual Design of Transport Lines for a Heavy-Ion Inertial-Fusion Power Plant

    SciTech Connect (OSTI)

    Lee, E.P.

    2011-04-13T23:59:59.000Z

    Some major system features are not stated but can be inferred. For example this is probably an engineering test facility, not a power plant driver, because the standoff from target to final magnet is only 5.0 m. The fusion target takes two-sided illumination with indirect drive using a total of 60 beam pulses: 10 pre-pulses (3.0 GeV) + 20 main pulses (4.0 GeV) from each side. On page 12 it's stated that the charge per beam pulse is 26.8 {micro}C, so we calculate pre-pulse: 20 x 3 GeV x 26.8 {micro}C = 1.608MJ, main pulse: 40 x 4 GeV x 26.8 {micro}C = 4.288MJ, total beam energy 5.896MJ. The beam ion mass ks 200 amu, so the species is Hg{sup +}. Therefore the mid-pulse velocities are: pre-pulse v = .1773c = 5.316 x 10{sup 7} m/s, main pulse v = .2040c = 6.114 x 10{sup 7} m/s, On page 12 it is stated that the pre-compression pulse length is L{sub 0} = 10.0m, and compression is by a 'factor of order 20'. They infer a final pulse length of about .5 m and final durations pre-pulse {tau} {approx} .5/5.316 x 10{sup 7} = 9.4 ns; main pulse {tau} {approx} .5/6.114 x 10{sup 7} = 8.2 ms. The magnetic rigidity of the beam ions is [B{rho}] = {gamma}m v/e = {l_brace} 112.0 T-m - prepulse/129.5 T-m - mainpulse{r_brace}.

  12. Command Line Tools Cloud Computing

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    Command Line Tools Cloud Computing #12;Everybody (or nearly everybody) loves GUI. AWS Command Line of advanced features. After surviving the cloud computing class till now, Your are almost a command line guru! You need AWS command line tools, ec2-api-tools, to maximize the power of AWS cloud computing. Plugging

  13. A Sliding-Window Approach to Supporting On-Line Interactive Display for Continuous Media1

    E-Print Network [OSTI]

    Chang, Ye-In

    A Sliding-Window Approach to Supporting On-Line Interactive Display for Continuous Media1 Chien the overhead, in this paper, we will propose a sliding window approach to supporting interactive display subobjects for display in a sliding window. For the way of interactive display described above, in which

  14. Proposed amendment for Presidential Permit PP-63 and associated modifications to 500 kV international transmission line, Forbes, Minnesota to Manitoba, Canada Northern States Power Company. Final Environmental Assessment

    SciTech Connect (OSTI)

    Not Available

    1992-02-01T23:59:59.000Z

    Northern States Power Company, (NSP), a Minnesota investor owned utility has applied to the Office of Fossil Energy, United States Department of Energy, to amend Presidential Permit PP-63 to allow for alterations to the 500 kV transmission line and as sedated facilities currently regulated by this permit. The alterations proposed for the 500 kV line owned by NSP are part of a long term effort sponsored by NSP to upgrade the existing NSP transmission system to allow for increased exchange of electricity with the Manitoba Hydro-Electric Board. Presidential Permit PP-63 authorized NSP to construct, connect, operate and maintain a 500 kV line at the United States/Canadian border approximately seven-and-a-half miles west of Warroad in Roseau County, Minnesota. This line connects with a 500 kV line owned and operated by the Manitoba Hydro-Electric Board (MHEB), which extends from Dorsey, Manitoba, Canada to the United States/Canadian border. NSP proposes to increase the electricity transfer capability of this transmission facility by constructing a new 80-acre substation on the existing 500 kV line in Roseau County, Minnesota, and upgrading the existing substation at Forbes, Minnesota. The proposed Roseau substation would contain two 41.5 ohm series capacitor banks. In addition, static VAR compensators are to be installed at the existing Forbes Substation. Approximately 5 acres would be added to the 30-acre Forbes site to house the additional equipment. No new lines would enter or exit the facility. NSP proposes to place the new Roseau Substation in service in May 1993 and to complete the upgrading of the Forbes Substation in March 1994. The primary, initial purpose of these modifications is to enable NSP to import 400 megawatts of electric power from MHEB during the summer months to meet peak electrical demand in the Minneapolis-St. Paul area. It is expected that this power transfer would begin in 1993.

  15. Authorization of Line Extension (Nebraska)

    Broader source: Energy.gov [DOE]

    Any entity permitted to establish an electric light and power plant, and/or transmission or distribution lines within a city, village, or public electric light and power district, may also extend...

  16. Dynamic Line Rating: Research and Policy Evaluation

    SciTech Connect (OSTI)

    Jake P. Gentle; Kurt S. Myers; Michael R. West

    2014-07-01T23:59:59.000Z

    Dynamic Line Rating (DLR) is a smart grid technology that allows the rating of electrical conductors to be increased based on local weather conditions. Overhead lines are conventionally given a conservative rating based on worst case scenarios. We demonstrate that observing the conditions in real time leads to additional capacity and safer operation. This paper provides a report of a pioneering scheme in the United States of America in which DLR has been applied. Thereby, we demonstrate that observing the local weather conditions in real time leads to additional capacity and safer operation. Secondly, we discuss limitations involved. In doing so, we arrive at novel insights which will inform and improve future DLR projects. Third, we provide a policy background and discussion to clarify the technology’s potential and identifies barriers to the imminent adoption of dynamic line rating systems. We provide suggestions for regulatory bodies about possible improvements in policy to encourage adoption of this beneficial technology.

  17. Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers

    E-Print Network [OSTI]

    Xu, TengFang T.

    2009-01-01T23:59:59.000Z

    single fan running under partial load. 3.2 Servers The IT orthe desired full or partial power load per rack during eachthe desired partial or full power load level (kW/rack) to be

  18. The EP-4(0) shielding kits: a new approach to protection from induced voltage

    SciTech Connect (OSTI)

    Vorob'ev, A. Yu.; Otmorskii, S. G.; Smekalov, V. V.; Gorozhankina, E. N.; Sosunov, N. N.; Bol'shunov, A. M.

    2011-09-15T23:59:59.000Z

    Problems of safety in work on overhead power lines and the overhead railroad ac contact network under induced voltages are considered. The use of additional individual protection systems is proposed to provide protection from electric shock during such work.

  19. HypoEnergy: Hybrid supercapacitor-battery power-supply optimization for Energy efficiency

    E-Print Network [OSTI]

    HypoEnergy: Hybrid supercapacitor-battery power-supply optimization for Energy efficiency Azalia the hybrid battery-supercapacitor power supply life- time. HypoEnergy combines high energy density and supercapacitors' charging overhead. HypoEnergy-KI studies the hybrid supply lifetime optimization

  20. TITLE III EVALUATION REPORT FOR THE SURFACE AND SUBSURFACE POWER SYSTEM

    SciTech Connect (OSTI)

    W.J. REED

    1999-08-16T23:59:59.000Z

    The objective of this evaluation is to provide recommendations to ensure consistency between the technical baseline requirements, baseline design, and the alternate constructed power system. Recommendations for resolving discrepancies between the alternate constructed power system, the technical baseline requirements, and the baseline design are included in this report. Cost and schedule estimates are provided for all recommended modifications. This report does not address items which do not meet current safety or code requirements. These items are identified to the CMO and immediate action is taken to correct the situation. The report does identify safety and code items for which the A/E is recommending improvements. The recommended improvements will exceed the minimum requirements of applicable code and safety guidelines. These recommendations are intended to improve and enhance the operation and maintenance of the facility. This Title III Evaluation Report (TER) does not include evaluation of surface electrical construction support facilities used to provide temporary construction power where the intent to remove such facilities when construction is completed such as tent storage buildings, shop buildings, fuel storage area etc. Furthermore, this TER does not include the extension of the existing overhead power lines to the booster pump station that was designed, installed, and is maintained by Nevada Test Site (NTS).

  1. Efficient generic on-line/off-line (threshold) signatures without key exposure q

    E-Print Network [OSTI]

    Kim, Kwangjo

    security requirements. Ó 2008 Elsevier Inc. All rights reserved. 1. Introduction The notion of on-line/off-line manufacturing process or as a background computation whenever the card is connected to power, and the on-lineEfficient generic on-line/off-line (threshold) signatures without key exposure q Xiaofeng Chen a

  2. Proposed Amendment to Presidential Permit PP-63 and Associated Modifications to 500-kV International Transmission Line: Forbes, Minnesota to Manitoba, Canada, Northern States Power Company. Addendum to the final Environmental Assessment

    SciTech Connect (OSTI)

    Not Available

    1992-10-01T23:59:59.000Z

    This Addendum to the Final Environmental Assessment for the Proposed Amendment to Presidential Permit PP-63 and Associated Modifications to 500 kV International Transmission Line: Forbes, Minnesota to Manitoba, Canada (DOE/EA-587) addresses Northern States Power Company`s (NSP) proposed expansion of the Forbes Substation. The applicant has requested that the expansion take place on the west side of the substation, within the existing property line, instead of on the north side as originally proposed. All of the proposed construction would take place on property already owned by NSP. DOE has reviewed the environmental impacts associated with this minor modification and has determined that the conclusions reached in the environmental assessment and Finding of No Significant Impact prepared in connection with NSP`s original amendment request remain valid.

  3. 2005 clean coal and power conference. Conference proceedings

    SciTech Connect (OSTI)

    NONE

    2005-07-01T23:59:59.000Z

    The theme of the conference was 'The paradox: today's coal technologies versus tomorrow's promise'. The sessions covered: today's technologies, tomorrow's potential; economic stability; energy security; transition to sustainable energy future; new coal power technologies leading to zero emission coal; existing power plants - improved performance through use of new technology; and carbon capture and storage R & D - challenges and opportunities. Some of the papers only consist of the viewgraphs/overheads.

  4. Design Considerations for a PEM Fuel Cell Powered Truck APU

    E-Print Network [OSTI]

    Grupp, David J; Forrest, Matthew E.; Mader, Pippin G.; Brodrick, Christie-Joy; Miller, Marshall; Dwyer, Harry A.

    2004-01-01T23:59:59.000Z

    of most line-haul class 8 trucks. Ballard Nexa Fuel Cell Thefuel cell powered auxiliary power units (APUs) to reduce idling in line-haul trucks.

  5. Preventing power outages Power system contingency analysis on the GPU

    E-Print Network [OSTI]

    Vuik, Kees

    problem. Moreover, the power system has to keep functioning properly even when a transmission line failsPreventing power outages Power system contingency analysis on the GPU To provide electricity generators, nuclear power plants, wind turbines, etc.) and a network of lines and cables to transmit

  6. Comparison of management, overhead, and direct costs of six projects managed by the Department of Energy and Government-Owned, Contractor-Operated Laboratories

    SciTech Connect (OSTI)

    Not Available

    1981-09-30T23:59:59.000Z

    The report covers management, overhead, and direct cost data on six DOE projects - three managed directly by DOE, and three managed for DOE by government-owned, contractor-operated (GOCO) laboratories. These data provide comparison for decisions on contracting out for project management services. (GHT)

  7. Reactive power compensating system

    DOE Patents [OSTI]

    Williams, Timothy J. (Redondo Beach, CA); El-Sharkawi, Mohamed A. (Renton, WA); Venkata, Subrahmanyam S. (Seattle, WA)

    1987-01-01T23:59:59.000Z

    The reactive power of an induction machine is compensated by providing fixed capacitors on each phase line for the minimum compensation required, sensing the current on one line at the time its voltage crosses zero to determine the actual compensation required for each phase, and selecting switched capacitors on each line to provide the balance of the compensation required.

  8. Reactive Power Compensator.

    DOE Patents [OSTI]

    El-Sharkawi, M.A.; Venkata, S.S.; Chen, M.; Andexler, G.; Huang, T.

    1992-07-28T23:59:59.000Z

    A system and method for determining and providing reactive power compensation for an inductive load. A reactive power compensator (50,50') monitors the voltage and current flowing through each of three distribution lines (52a, 52b, 52c), which are supplying three-phase power to one or more inductive loads. Using signals indicative of the current on each of these lines when the voltage waveform on the line crosses zero, the reactive power compensator determines a reactive power compensator capacitance that must be connected to the lines to maintain a desired VAR level, power factor, or line voltage. Alternatively, an operator can manually select a specific capacitance for connection to each line, or the capacitance can be selected based on a time schedule. The reactive power compensator produces control signals, which are coupled through optical fibers (102/106) to a switch driver (110, 110') to select specific compensation capacitors (112) for connections to each line. The switch driver develops triggering signals that are supplied to a plurality of series-connected solid state switches (350), which control charge current in one direction in respect to ground for each compensation capacitor. During each cycle, current flows from ground to charge the capacitors as the voltage on the line begins to go negative from its positive peak value. The triggering signals are applied to gate the solid state switches into a conducting state when the potential on the lines and on the capacitors reaches a negative peak value, thereby minimizing both the potential difference and across the charge current through the switches when they begin to conduct. Any harmonic distortion on the potential and current carried by the lines is filtered out from the current and potential signals used by the reactive power compensator so that it does not affect the determination of the required reactive compensation. 26 figs.

  9. Reactive power compensator

    DOE Patents [OSTI]

    El-Sharkawi, Mohamed A. (Renton, WA); Venkata, Subrahmanyam S. (Woodinville, WA); Chen, Mingliang (Kirkland, WA); Andexler, George (Everett, WA); Huang, Tony (Seattle, WA)

    1992-01-01T23:59:59.000Z

    A system and method for determining and providing reactive power compensation for an inductive load. A reactive power compensator (50,50') monitors the voltage and current flowing through each of three distribution lines (52a, 52b, 52c), which are supplying three-phase power to one or more inductive loads. Using signals indicative of the current on each of these lines when the voltage waveform on the line crosses zero, the reactive power compensator determines a reactive power compensator capacitance that must be connected to the lines to maintain a desired VAR level, power factor, or line voltage. Alternatively, an operator can manually select a specific capacitance for connection to each line, or the capacitance can be selected based on a time schedule. The reactive power compensator produces control signals, which are coupled through optical fibers (102/106) to a switch driver (110, 110') to select specific compensation capacitors (112) for connections to each line. The switch driver develops triggering signals that are supplied to a plurality of series-connected solid state switches (350), which control charge current in one direction in respect to ground for each compensation capacitor. During each cycle, current flows from ground to charge the capacitors as the voltage on the line begins to go negative from its positive peak value. The triggering signals are applied to gate the solid state switches into a conducting state when the potential on the lines and on the capacitors reaches a negative peak value, thereby minimizing both the potential difference and across the charge current through the switches when they begin to conduct. Any harmonic distortion on the potential and current carried by the lines is filtered out from the current and potential signals used by the reactive power compensator so that it does not affect the determination of the required reactive compensation.

  10. Transmission line: design manual

    SciTech Connect (OSTI)

    Farr, H.H.

    1980-01-01T23:59:59.000Z

    The purpose of this manual is to outline the various requirements for, and the procedures to be followed in the design of power transmission lines by the Bureau of Reclamation, US Department of the Interior. Numerous design studies, which have been made on specific aspects of transmission line design, are included with explanations of their applications. Information is presented concerning such aspects as selection of type of construction, conductor sags and tensions, insulation, lightning protection, clearance patterns, galloping conductors, structure limitation and guying charts, and structure spotting. Structure design examples are limited to wood-pole construction. Interpretations of the National Electrical Safety Code and other codes are made as required. Some of the example problems were developed when the sixth edition of NESC was current, and are so noted; however, most examples use the 1977 edition of NESC.

  11. Power Factor Reactive Power

    E-Print Network [OSTI]

    motor power: 117.7 V x 5.1 A = 600 W? = 0.6 kW? NOT the power measured by meter #12;Page 9 PSERC: displacement power factor: angle between voltage and current = 0 degrees pf = cos(0 degrees) = 1.0 true powerPage 1 PSERC Power Factor and Reactive Power Ward Jewell Wichita State University Power Systems

  12. SMB Host Processor Overhead

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    There are two benchmarks included here. The msgrate test measures the sustained MPI message rate using a communication pattern found in many real applications. For a complete...

  13. SMB Host Processor Overhead

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEABRV2/01/12SMB SMB Description

  14. Monitoring of Power System Topology in Real-Time Mladen Kezunovic

    E-Print Network [OSTI]

    components such as generators, power transformers, transmission lines, loads, etc. The knowledge about components such as generators, power transformers, busbars, transmission lines and loads. The interconnected

  15. APPLICATION OF A CATEGORICAL EXCLUSION

    Office of Environmental Management (EM)

    a permit to American Electric Power (AEP) for the installation and maintenance of an overhead 7.2kv electrical power line from an existing AEP power pole located on U S Department...

  16. On-Line Transient Stability Assessment Scoping Study

    E-Print Network [OSTI]

    On-Line Transient Stability Assessment Scoping Study Final Project Report Power Systems Engineering PSERC #12;Power Systems Engineering Research Center On-Line Transient Stability Assessment Scoping Study With the increase in transactions on the bulk power system, there is a critical need to determine transient security

  17. Probing Active Galactic Nuclei with the Iron Line

    E-Print Network [OSTI]

    that the iron line profile around a Kerr black hole is wider due to additional gravitational red- shifting. Continuum components: 1. X-ray power law 2. Broad emission lines (Fe K) 3. Inverse compton reflection 4 spectrum. Panel b employs a power-law to model the spectrum. Panel c employs a power law and broad Gaussian

  18. Virtualizing Power Cords by Wireless Power Transmission and Energy Harvesting

    E-Print Network [OSTI]

    Tentzeris, Manos

    technology can be called the virtualization of the communication line, wireless power transmissionVirtualizing Power Cords by Wireless Power Transmission and Energy Harvesting Yoshihiro Kawahara1 for the virtualization of power cords for electrical devices. The first approach is a new concept for routing electric

  19. Increasing the Capacity of Existing Power Lines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking of BlytheDepartment of Energy IRSJulyIncandescentIncreasing Solar

  20. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 22, NO. 2, MAY 2007 879 Power Engineering Letters

    E-Print Network [OSTI]

    Gross, George

    factors (LODFs), mul- tiple-line outages, power transfer distribution factors (PTDFs), system security. I attention. Given the usefulness of LODFs in the study of security with many outaged lines the convention that the direction of the real power flow on the line is from to . The ISF of line

  1. Secretary Chu Thanks Utility Staff and Line Workers For Their...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Thanks Utility Staff and Line Workers For Their Efforts to Restore Power in the Wake of Hurricane Sandy Secretary Chu Thanks Utility Staff and Line Workers For Their Efforts to...

  2. VISAR: Line-imaging interferometer

    SciTech Connect (OSTI)

    Hemsing, W.F.; Mathews, A.R.; Warnes, R.H.; George, M.J.; Whittemore, G.R.

    1991-01-01T23:59:59.000Z

    A line-imaging Velocity Interferometer System for Any Reflector (VISAR) was applied to measure velocity across the diameter of a metal plate explosively accelerated to 5.5 km/s. Amplified, single- frequency laser light was focused to illuminate a line on the metal surface. The line's image was focused through the interferometer to a streak camera that swept in time and recorded directly on film. During the experiment, the Doppler-shift caused motion of the interference fringes. Analysis of the digitized film record yielded a continuum of time-resolved velocity histories. Velocity gradients across the plate that first swept radially inward, then reflected outward, were clearly measured. Increased power provided by the laser amplifier greatly improved the signal-to-noise ratio compared to our previous line VISAR experiments. 5 refs., 8 figs.

  3. Topic 1: Basics of Power Systems A.H. MohsenianRad (U of T) 1Networking and Distributed Systems

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    ) Transmission Lines Several Hundred Miles Switching Stations Transformers Circuit Breakers #12;Power Systems Grid 7 · Power Distribution: Medium Voltage (MV) Transmission Lines ( in Smart Grid 11 Nodes: Buses Links: Transmission Lines Generator Load #12;Power Grid Graph Representation

  4. Final joint environmental assessment for the construction and routine operation of a 12-kilovolt (KV) overhead powerline right-of-way, and formal authorization for a 10-inch and 8-inch fresh water pipeline right-of-way, Naval Petroleum Reserve No. 1, Kern County, California

    SciTech Connect (OSTI)

    Not Available

    1994-10-01T23:59:59.000Z

    The purpose and need of the proposed action, which is the installation of an overhead powerline extension from an Naval Petroleum Reserve No. 1 (NPR-1) power source to the WKWD Station A, is to significantly reduce NPR-1`s overall utility costs. While the proposed action is independently justified on its own merits and is not tied to the proposed NPR-1 Cogeneration Facility, the proposed action would enable DOE to tie the NPR-1 fresh water pumps at Station A into the existing NPR-1 electrical distribution system. With the completion of the cogeneration facility in late 1994 or early 1995, the proposed action would save additional utility costs. This report deals with the environmental impacts of the construction of the powerline and the water pipeline. In addition, information is given about property rights and attaining permission to cross the property of proposed affected owners.

  5. ac line conditioners: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of lines . ..2 Main Terasoma, Tomohide 83 Study of supplementary controls for embedded HVDC links in a AC power system. Open Access Theses and Dissertations Summary: ??This...

  6. Transmission Line Security Monitor: Final Report

    SciTech Connect (OSTI)

    John Svoboda

    2011-04-01T23:59:59.000Z

    The Electric Power Transmission Line Security Monitor System Operational Test is a project funded by the Technical Support Working Group (TSWG). TSWG operates under the Combating Terrorism Technical Support Office that functions under the Department of Defense. The Transmission Line Security Monitor System is based on technology developed by Idaho National Laboratory. The technology provides a means for real-time monitoring of physical threats and/or damage to electrical transmission line towers and conductors as well as providing operational parameters to transmission line operators to optimize transmission line operation. The end use is for monitoring long stretches of transmission lines that deliver electrical power from remote generating stations to cities and industry. These transmission lines are generally located in remote transmission line corridors where security infrastructure may not exist. Security and operational sensors in the sensor platform on the conductors take power from the transmission line and relay security and operational information to operations personnel hundreds of miles away without relying on existing infrastructure. Initiated on May 25, 2007, this project resulted in pre-production units tested in realistic operational environments during 2010. A technology licensee, Lindsey Manufacturing of Azusa California, is assisting in design, testing, and ultimately production. The platform was originally designed for a security monitoring mission, but it has been enhanced to include important operational features desired by electrical utilities.

  7. Miter bend loss and higher order mode content measurements in overmoded millimeter-wave transmission lines

    E-Print Network [OSTI]

    Kowalski, Elizabeth J. (Elizabeth Joan)

    2010-01-01T23:59:59.000Z

    High power applications require an accurate calculation of the losses on overmoded corrugated cylindrical transmission lines. Previous assessments of power loss on these lines have not considered beam polarization or higher ...

  8. 1538 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 20, NO. 3, AUGUST 2005 Security-Constrained Unit Commitment

    E-Print Network [OSTI]

    Fu, Yong

    flow con- straints on line . Penalty cost of transmission flow violation on line . Ramp-down rate limit-00159-2004. The authors are with the Electric Power and Power Electronics Center, Elec- trical of unit . Initial real power flow on line . Maximum capacity of line . Real power on line and its

  9. Pulse power linac

    DOE Patents [OSTI]

    Villa, Francesco (Alameda, CA)

    1990-01-01T23:59:59.000Z

    A linear acceleration for charged particles is constructed of a plurality of transmission line sections that extend between a power injection region and an accelerating region. Each line section is constructed of spaced plate-like conductors and is coupled to an accelerating gap located at the accelerating region. Each gap is formed between a pair of apertured electrodes, with all of the electrode apertures being aligned along a particle accelerating path. The accelerating gaps are arranged in series, and at the injection region the line sections are connected in parallel. At the injection region a power pulse is applied simultaneously to all line sections. The line sections are graduated in length so that the pulse reaches the gaps in a coordinated sequence whereby pulse energy is applied to particles as they reach each of the gaps along the accelerating path.

  10. Interline Photovoltaic (I-PV) power system - A novel concept of power flow control and management

    E-Print Network [OSTI]

    Khadkikar, Vinod

    This paper presents a new system configuration for a large-scale Photovoltaic (PV) power system with multi-line transmission/distribution networks. A PV power plant is reconfigured in a way that two adjacent power system ...

  11. Power Plant Power Plant

    E-Print Network [OSTI]

    Tingley, Joseph V.

    Basin Center for Geothermal Energy at University of Nevada, Reno (UNR) 2 Nevada Geodetic LaboratoryStillwater Power Plant Wabuska Power Plant Casa Diablo Power Plant Glass Mountain Geothermal Area Lassen Geothermal Area Coso Hot Springs Power Plants Lake City Geothermal Area Thermo Geothermal Area

  12. June 2014 Most Viewed Documents for Power Generation And Distribution...

    Office of Scientific and Technical Information (OSTI)

    Documents for Power Generation And Distribution Science Subject Feed Seventh Edition Fuel Cell Handbook NETL (2004) 118 > Electric power high-voltage transmission lines:...

  13. Texas Tech Effort Overview Collaborative Research on Novel High Power

    E-Print Network [OSTI]

    Anlage, Steven

    N) · Nonlinear Transmission lines · High Power Microwave source development · High reprate rf sources · HPM wave Power Microwave breakdown · Vacuum UV Spectroscopy in atmospheric gases · Explosively driven HPM

  14. Online Transmission Line Loadability Assessment Using Synchrophasor Measurements

    E-Print Network [OSTI]

    Liberzon, Daniel

    a stable operation. Transmission line loading limits are also essential to deter- mine locational marginal loading margins provide a useful metric to operate the power sys- tem to satisfy demands while ensuring prices in power markets. Therefore, the assessment of transmission line loadability under various

  15. Financing, Overhead, and Profit: An In-Depth Discussion of Costs Associated with Third-Party Financing of Residential and Commercial Photovoltaic Systems

    SciTech Connect (OSTI)

    Feldman, D.; Friedman, B.; Margolis, R.

    2013-10-01T23:59:59.000Z

    Previous work quantifying the non-hardware balance-of-system costs -- or soft costs -- associated with building a residential or commercial photovoltaic (PV) system has left a significant portion unsegmented in an 'other soft costs' category. This report attempts to better quantify the 'other soft costs' by focusing on the financing, overhead, and profit of residential and commercial PV installations for a specific business model. This report presents results from a bottom-up data-collection and analysis of the upfront costs associated with developing, constructing, and arranging third-party-financed residential and commercial PV systems. It quantifies the indirect corporate costs required to install distributed PV systems as well as the transactional costs associated with arranging third-party financing.

  16. Plains and Eastern Clean Line Transmission Line: Comment from...

    Office of Environmental Management (EM)

    from Block Plains and Eastern Clean Line: Arkansas and Oklahoma Plains and Eastern Clean Line Transmission Line: Comment from Block Plains and Eastern Clean Line: Arkansas and...

  17. Next Generation On-Line Dynamic Security Assessment

    E-Print Network [OSTI]

    Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Power;Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Parts III Research Center (PSERC) research project titled "Next Generation On-Line Dynamic Security Assessment

  18. North American Power Symposium NAPS, San Luis Obispo, California, October 1999. EMTP Studies of UPFC Power Oscillation Damping

    E-Print Network [OSTI]

    Cañizares, Claudio A.

    transmission sys- tems, rather then on building new transmission lines and power stations, for economical and reactive power on transmission lines to allow for their secure loading, to full thermal capability in some . The SSSC, a substitute for the TCSC, can be used to control the power ow in a transmission line by changing

  19. ITP Industrial Distributed Energy: Microturbine Power Conversion...

    Broader source: Energy.gov (indexed) [DOE]

    added to internal combustion generator line No Power converter will be purchased from Turbo Genset General Electric, Global Research Center & GE Industrial Developing...

  20. EIS-0486: Plains & Eastern Clean Line Transmission Project |...

    Broader source: Energy.gov (indexed) [DOE]

    project would include an overhead 600 kilovolt (kV) high voltage direct current (HVDC) electric transmission system and associated facilities with the capacity to deliver...

  1. Case Study - Minnesota Power - Accelerating Grid Modernization...

    Broader source: Energy.gov (indexed) [DOE]

    Power (MP) serves approximately 144,000 customers and manages almost 9,000 miles of power lines and over 160 substations. Grid modernization is a top corporate priority and...

  2. POWER GRID DYNAMICS: ENHANCING POWER SYSTEM OPERATION THROUGH PRONY ANALYSIS

    SciTech Connect (OSTI)

    Ray, C.; Huang, Z.

    2007-01-01T23:59:59.000Z

    Prony Analysis is a technique used to decompose a signal into a series consisting of weighted complex exponentials and promises to be an effi cient way of recognizing sensitive lines during faults in power systems such as the U.S. Power grid. Positive Sequence Load Flow (PSLF) was used to simulate the performance of a simple two-area-four-generator system and the reaction of the system during a line fault. The Dynamic System Identifi cation (DSI) Toolbox was used to perform Prony analysis and use modal information to identify key transmission lines for power fl ow adjustment to improve system damping. The success of the application of Prony analysis methods to the data obtained from PSLF is reported, and the key transmission line for adjustment is identifi ed. Future work will focus on larger systems and improving the current algorithms to deal with networks such as large portions of the Western Electricity Coordinating Council (WECC) power grid.

  3. Rubber linings answer to many problems

    SciTech Connect (OSTI)

    Mehra, L. [Quality Linings Co., Aurora, CO (United States)

    1998-12-31T23:59:59.000Z

    The uses of rubber linings in different fields industries are discussed.The physical properties of rubber both natural and synthetic rubber are listed and their importance is evaluated. The aging of rubber is discussed in detail, including effects of temperature on aging of rubber. By virtue of its inherent elasticity and chemical resistance, rubber linings have found many uses in the protection of mining equipment, water treatment tanks and vessels, flue gas desulfurization equipment in power plants and varied process and storage vessels in chemical industries. Rubber has found extensive use in civil engineering field as expansion joints and bladders in dams. Electrical resistance of rubber is useful for its application as an insulating material. Rubber is chemically resistant to acids, alkalies and many salt solutions. Rubber linings are therefore used for protection of steel against these acids, alkalies or salt solutions. The extreme elasticity of rubber has been found useful in its application as a lining material in areas subject to high abrasion. Frequently rubber linings are the linings of choice when a combination of abrasion and chemical attack are to be protected against. Constantly, new formulations of rubber lining compounds are being developed just as new chemical processes are being made. The flexibility of compounding and the relative ease of putting layers of different rubber formulations together in multilayered formulations of rubber lining compounds is leading to new uses of this lining material.

  4. Magnetospheric line radiation event observed simultaneously on board Cluster 1, Cluster 2 and DEMETER spacecraft

    E-Print Network [OSTI]

    Santolik, Ondrej

    be related to power line harmonic radiation (PLHR, an electromagnetic radiation from electric power systemsMagnetospheric line radiation event observed simultaneously on board Cluster 1, Cluster 2., O. Santolík, M. Parrot, and J. S. Pickett (2012), Magnetospheric line radiation event observed

  5. Wetlands mitigation: Parnership between an electric power company and a federal wildlife refuge

    SciTech Connect (OSTI)

    Perry, M.C.; Sibrel, C.B.; Gough, G.A. [Patuxent Wildlife Research Center, Laurel, MD (United States)

    1996-11-01T23:59:59.000Z

    Nine hectares (23 acres) of a degraded section of Patuxent Research Refuge in Laurel, Maryland, USA, were converted to wetland habitat by the Baltimore Gas and Electric Company in 1994. The wetlands were created as mitigation for 5.7 ha (14 acres) of wetlands that were impacted as part o the construction of 8.5-km (5.3-mile) 500-kV over-head transmission line on the refuge. The area consists of a created forested wetland of 5.5 ha(13.5 acres), a seasonally inundated green-free reservoir of 7.6 ha (6.5 acres), and an impounded pond wetland of 1.2 ha (3 acres). Construction included the planting of 6131 trees, 4276 shrubs, and 15,102 emergent plants. Part of the site has been studied intensively since completion and survival of trees and shrubs after two years was 88%. Measurements of these transplants have shown growth greater than on other created sites in Maryland. Grasses and other herbaceous vegetation were dominant plants in the meter-square plots in the first two years of sampling of the created forested wetland. Wildlife surveys for birds, mammals, amphibians, and reptiles have revealed diverse communities. Although these communities represent species consistent with open habitat, more typical forest species should colonize the area as it undergoes succession into a more mature forested wetland. The creation, management, and research of this mitigation site represents an excellent example of a partnership between a private electric power company and a federal wildlife refuge. This partnership has increased local biodiversity and improved regional water quality of the Patuxent River and the Chesapeake Bay. 6 refs., 7 figs., 4 tabs.

  6. Radiative transfer in molecular lines

    E-Print Network [OSTI]

    A. Asensio Ramos; J. Trujillo Bueno; J. Cernicharo

    2001-02-15T23:59:59.000Z

    The highly convergent iterative methods developed by Trujillo Bueno and Fabiani Bendicho (1995) for radiative transfer (RT) applications are generalized to spherical symmetry with velocity fields. These RT methods are based on Jacobi, Gauss-Seidel (GS), and SOR iteration and they form the basis of a new NLTE multilevel transfer code for atomic and molecular lines. The benchmark tests carried out so far are presented and discussed. The main aim is to develop a number of powerful RT tools for the theoretical interpretation of molecular spectra.

  7. Dirty kilowatts: America's most polluting power plants

    SciTech Connect (OSTI)

    NONE

    2007-07-15T23:59:59.000Z

    In 2006, the US EPA tracked more than 1,400 fossil-fired power plants of varying sizes through its Acid Rain Program. This report ranks each of the 378 largest plants (generating at least 2 million megawatt-hours in 2006) for which both the most recent EPA emissions data and Energy Information Administration (EIA) electric generation data are available. The report ranks each plant based on emission rates, or pounds of pollutant for each megawatt-hour (or million megawatt-hours, in the case of mercury) the plant produced. It ranks the top fifty power plants polluters for sulfur dioxide, nitrogen oxides, carbon dioxide, and mercury. A complete listing of all 378 plants is included as Appendix A. Appendix B contains overheads of an NETL presentation: Tracking new coal-fired power plants - coal's resurgence in electric power generation, 24 January 2007. The 12 states with the heaviest concentrations of the dirtiest power plants, in terms of total tons of carbon dioxide emitted, are: Texas (five, including two of the top 10 dirtiest plants); Pennsylvania (four); Indiana (four, including two of the top 10 dirtiest plants); Alabama (three); Georgia (three, including two of the top three dirtiest plants); North Carolina (three); Ohio (three); West Virginia (three); Wyoming (two); Florida (two); Kentucky (two); and New Mexico (two). Carbon dioxide emissions from power plants are now at roughly 2.5 billion tons per year. Power plants are responsible for about 30%-40% of all man-made CO{sub 2} emissions in the USA. Power plants, especially those that burn coal, are by far the largest single contributor of SO{sub 2} pollution in the United States. Power plant mercury emissions remain steady as compared to previous years. A searchable database ranking 378 U.S. power plants on carbon dioxide, sulfur dioxide, nitrogen oxide and mercury pollution is available online at http://www.dirtykilowatts.org. 22 refs., 8 tabs., 2 apps.

  8. Effect of neglecting resistance in calculations of short circuit faults on power systems

    E-Print Network [OSTI]

    Mayo, Samuel Jonathan

    1948-01-01T23:59:59.000Z

    of Conductor B. Ef feet of Locat ion of i"ault C. Effect of Generator Impedances Effect of ". utual Impedance in Overhead ircuits E. 'ffect of Ground '&!res F. Effect of Type of Fault 1. Line to Line Fault 2, D&uble Line to Ground Fault Single Line...) Configuration of conductorS Fig. P . 59Ste, m 1. Two overheaci circu (rs with mutual coupling 12 IO t GEOAf ETR IC PER IV DIsT~NGE OF GRovND o' I RE F Ro III Co N D v c 7'ORS ~ 20 )(Io f 25 )(lo + fog FEET {a) One ground wire to 10 GEOM KTR I C...

  9. Infrastructure systems, such as buildings, schools, roads, bridges, water lines, sewage systems, communication systems, and power plants, are a fundamental part of daily life. Both rapid and gradual climate changes can affect

    E-Print Network [OSTI]

    and gradual climate changes can affect these systems and have significant impacts on society. Extreme weather infrastructure sector make practical decisions in order to adapt to climate changes and variations systems, communication systems, and power plants, are a fundamental part of daily life. Both rapid

  10. Corruption of Pulsed Electric Thruster Voltage Fluctuation Measurements by Transmission Line

    E-Print Network [OSTI]

    Choueiri, Edgar

    Corruption of Pulsed Electric Thruster Voltage Fluctuation Measurements by Transmission Line to transmission line corruption--as an experimental example of the extent to which the power transmission line can termination resistance s Laplace variable V (t) transmission line driving signal Vn Laplace transform

  11. Power marketing and renewable energy

    SciTech Connect (OSTI)

    Fang, J.M.

    1997-09-01T23:59:59.000Z

    Power marketing refers to wholesale and retail transactions of electric power made by companies other than public power entities and the regulated utilities that own the generation and distribution lines. The growth in power marketing has been a major development in the electric power industry during the last few years, and power marketers are expected to realize even more market opportunities as electric industry deregulation proceeds from wholesale competition to retail competition. This Topical Issues Brief examines the nature of the power marketing business and its relationship with renewable power. The information presented is based on interviews conducted with nine power marketing companies, which accounted for almost 54% of total power sales by power marketers in 1995. These interviews provided information on various viewpoints of power marketers, their experience with renewables, and their respective outlooks for including renewables in their resource portfolios. Some basic differences exist between wholesale and retail competition that should be recognized when discussing power marketing and renewable power. At the wholesale level, the majority of power marketers stress the commodity nature of electricity. The primary criteria for developing resource portfolios are the same as those of their wholesale customers: the cost and reliability of power supplies. At the retail level, electricity may be viewed as a product that includes value-added characteristics or services determined by customer preferences.

  12. Design of a 3.3 V analog video line driver with controlled output impedance

    E-Print Network [OSTI]

    Ramachandran, Narayan Prasad

    2004-09-30T23:59:59.000Z

    impedance of the line. The main requirements for design are high output swing, high linearity, matched impedance to the line and power efficiency. These requirements are addressed by a class AB amplifier whose output impedance can be controlled through...

  13. Series Transmission Line Transformer

    DOE Patents [OSTI]

    Buckles, Robert A. (Livermore, CA); Booth, Rex (Livermore, CA); Yen, Boris T. (El Cerrito, CA)

    2004-06-29T23:59:59.000Z

    A series transmission line transformer is set forth which includes two or more of impedance matched sets of at least two transmissions lines such as shielded cables, connected in parallel at one end ans series at the other in a cascading fashion. The cables are wound about a magnetic core. The series transmission line transformer (STLT) which can provide for higher impedance ratios and bandwidths, which is scalable, and which is of simpler design and construction.

  14. Electric Transmission Lines (Nebraska)

    Broader source: Energy.gov [DOE]

    The Public Service Commission has jurisdiction over all electricity transmission lines crossing over or under railroad tracks at public highway crossings. This section contains general regulations...

  15. EA-1891: Alvey-Fairview Transmission Line Rebuild Project, Oregon

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to rebuild DOE’s Bonneville Power Administration’s Alvey-Fairview No. 1 230-kV transmission line located between Eugene, Oregon, and Coquille, Oregon.

  16. EIS-0106: Great Falls-Conrad Transmission Line Project, Montana

    Broader source: Energy.gov [DOE]

    The Western Area Power Administration prepared this EIS to evaluate the environmental impacts of the construction and operation of a 230-kilovolt transmission line from Great Falls, Montana, to Conrad, Montana.

  17. Corona losses in HVdc bipolar lines

    SciTech Connect (OSTI)

    Corbellini, U.; Pelacchi, P. [Univ. of Pisa (Italy). Dept. of Electric Systems and Automation] [Univ. of Pisa (Italy). Dept. of Electric Systems and Automation

    1996-07-01T23:59:59.000Z

    The problem related to the prediction of corona losses in HVdc bipolar lines has been solved, in the past, by means of semi-empirical monomial formulae. However, the proposed formulae that are simpler to use do not always give adequate calculation precision, while the formulae that provide the closest results require implicit functions of different complexity, which are difficult to apply; moreover, it is not possible to understand clearly what influence the variations of the different line parameters have on the losses themselves. The new monomial semi-empirical relationship, proposed to predict the corona losses in HVdc bipolar lines, is very simple to use; it highlights the dependence of power losses due to the corona effect by the different line parameters. The formula has been developed by elaborating a considerable amount of available experimental data.

  18. Recognition of On-Line Handwritten Patterns Through Shape Metamorphosis

    E-Print Network [OSTI]

    methods that handles collectively cursive words, and hand-drawn line figures. The proposed system achieves-line handwritten patterns. It proposes the use of physics-based shape metamorphosis as a poten- tially powerful way time (to the best of our knowledge) it is used for recognition purposes. The proposed system uses

  19. EIS-0474: Southline Transmission Line Project; Arizona and New Mexico

    Broader source: Energy.gov [DOE]

    DOE’s Western Area Power Administration is preparing this EIS to evaluate the environmental impacts of the proposed Southline Transmission Project, which would consist of a new 225-mile transmission line between existing substations at Afton, New Mexico, and Apache, Arizona, and improvements to approximately 130 miles of existing transmission lines between the Apache and Saguaro, Arizona substations.

  20. EIS-0101: Thermopolis, Alcova, Casper Transmission Line Project

    Broader source: Energy.gov [DOE]

    The Western Area Power Administration developed this statement to evaluate the environmental impacts of constructing, operating and maintaining a 230-kilovolt transmission line between Thermopolis, Wyoming, and Alcova, Wyoming, and a 230/345-kilovolt transmission line between Alcova, Wyoming, and Casper, Wyoming.

  1. Transmission Line Security Monitor

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

  2. Transmission Line Security Monitor

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

  3. Optimal PMU Placement Evaluation for Power System Dynamic State Estimation

    E-Print Network [OSTI]

    Bishop, Gary

    flow along the transmission lines or transformers. · Bus power injection measurements: the real of dis- tribution systems, the line current magnitude measurements (along the transmission lines. · Current phasor measurements: the phase angles and mag- nitudes of current phasors along transmission lines

  4. SunLine Begins Extended Testing of Hybrid Fuel Cell Bus; DOE...

    Broader source: Energy.gov (indexed) [DOE]

    to environmentally friendly alternative power systems by testing a prototype hybrid fuel cell bus. SunLine's experience with gaseous fuels began in 1994, when a concern for...

  5. PSO (FU 2101) Ensemble-forecasts for wind power

    E-Print Network [OSTI]

    PSO (FU 2101) Ensemble-forecasts for wind power Analysis of the Results of an On-line Wind Power Ensemble- forecasts for wind power (FU2101) a demo-application producing quantile forecasts of wind power correct) quantile forecasts of the wind power production are generated by the application. However

  6. Type B Accident Investigation Board Report on the July 25, 1997, Contract Brush Cutter Injury on the Ashe-Marion #2 500 kV Line

    Broader source: Energy.gov [DOE]

    On July 25, 1997, at 1205 hours, a contract hand brush cutter was seriously injured when he felled a tree close to a Bonneville Power Administration energized transmission power line, located within a BPA transmission-line corridor.

  7. Day 1 with PowerShell Things I wish I'd known when I started using PowerShell

    E-Print Network [OSTI]

    Cook, John D.

    on the subject. Set the execution policy PowerShell was designed from the beginning with security in mind. Power details.. At line:1 char:13 + .\\myScript.ps1 PowerShell launch faster When Microsoft releasedDay 1 with PowerShell Things I wish I'd known when I started using PowerShell John D. Cook http

  8. Power Systems Stability Control : Reinforcement Learning Framework

    E-Print Network [OSTI]

    Wehenkel, Louis

    1 Power Systems Stability Control : Reinforcement Learning Framework Damien Ernst, Member, IEEE systems. We describe some challenges in power system control and discuss how some of those challenges with the real power system and the off-line mode in which the interaction occurs with a simulation model

  9. Power Grid Vulnerability to Geographically Correlated Failures

    E-Print Network [OSTI]

    Shepard, Kenneth

    Power Grid Vulnerability to Geographically Correlated Failures ­ Analysis and Control Implications such as telecommunications networks [14]. The power grid is vulnerable to natural disasters, such as earthquakes, hurricanes [17], [34]. Thus, we focus on the vulnerability of the power grid to an outage of several lines

  10. Pulsed Power Driven Fusion Energy

    SciTech Connect (OSTI)

    SLUTZ,STEPHEN A.

    1999-11-22T23:59:59.000Z

    Pulsed power is a robust and inexpensive technology for obtaining high powers. Considerable progress has been made on developing light ion beams as a means of transporting this power to inertial fusion capsules. However, further progress is hampered by the lack of an adequate ion source. Alternatively, z-pinches can efficiently convert pulsed power into thermal radiation, which can be used to drive an inertial fusion capsule. However, a z-pinch driven fusion explosion will destroy a portion of the transmission line that delivers the electrical power to the z-pinch. They investigate several options for providing standoff for z-pinch driven fusion. Recyclable Transmission Lines (RTLs) appear to be the most promising approach.

  11. Intrinsic AGN Absorption Lines

    E-Print Network [OSTI]

    Fred Hamann

    2000-06-12T23:59:59.000Z

    Strong absorption lines are common in rest-frame UV spectra of AGNs due to a variety of resonant transitions, for example the HI Lyman series lines (most notably Ly-alpha 1216) and high-ionization doublets like CIV 1549,1551. The lines are called ``intrinsic'' if the absorbing gas is physically related to the AGN, e.g. if the absorber resides broadly within the radius of the AGN's surrounding ``host'' galaxy. Intrinsic absorption lines are thus valuable probes of the kinematics, physical conditions and elemental abundances in the gas near AGNs. Studies of intrinsic absorbers have historically emphasized the broad absorption lines (BALs) in quasars. Today we recognize a wider variety of intrinsic lines in a wider range of objects. For example, we now know that Seyfert 1 galaxies (the less luminous cousins of quasars) have intrinsic absorption. We also realize that intrinsic lines can form in a range of AGN environments --- from the dynamic inner regions like the BALs, to the more quiescent outer host galaxies >10 kpc away. This article provides a brief introduction to current observational and theoretical work on intrinsic AGN absorbers.

  12. Ground-based transmission line conductor motion sensor

    SciTech Connect (OSTI)

    Jacobs, M.L.; Milano, U.

    1988-08-22T23:59:59.000Z

    A ground-based-conductor motion-sensing apparatus is provided for remotely sensing movement of electric-power transmission lines, particularly as would occur during the wind-induced condition known as galloping. The apparatus is comprised of a motion sensor and signal-generating means which are placed underneath a transmission line and will sense changes in the electric field around the line due to excessive line motion. The detector then signals a remote station when a conditioning of galloping is sensed. The apparatus of the present invention is advantageous over the line-mounted sensors of the prior art in that it is easier and less hazardous to install. The system can also be modified so that a signal will only be given when particular conditions, such as specific temperature range, large-amplitude line motion, or excessive duration of the line motion, are occurring.

  13. Coherent soliton communication lines

    SciTech Connect (OSTI)

    Yushko, O. V., E-mail: olesya.yushko@gmail.com; Redyuk, A. A.; Fedoruk, M. P.; Turitsyn, S. K. [Novosibirsk State University (Russian Federation)

    2014-11-15T23:59:59.000Z

    The data transmission in coherent fiber-optical communication lines using solitons with a variable phase is studied. It is shown that nonlinear coherent structures (solitons) can be applied for effective signal transmission over a long distance using amplitude and optical-phase keying of information. The optimum ratio of the pulse width to the bit slot at which the spectral efficiency (transmitted bits per second and hertz) is maximal is determined. It is shown that soliton fiber-optical communication lines can ensure data transmission at a higher spectral efficiency as compared to traditional communication lines and at a high signal-to-noise ratio.

  14. Holes in Spectral Lines

    E-Print Network [OSTI]

    Fontana, Peter R.; Srivastava, Rajendra P.

    1973-06-01T23:59:59.000Z

    The decay of an atom in the presence of a static perturbation is investigated. The perturbation couples a decaying state with a nondecaying state. A "hole" appears in the emission line at a frequency equal to the frequency difference between...

  15. Line Extension Alternatives

    Broader source: Energy.gov [DOE]

    The Public Service Board (PSB) of Vermont developed rules regarding utility line extension requests. While the majority of the rules focus on the procedure followed (and associated fees) for the...

  16. Electric Transmission Lines (Iowa)

    Broader source: Energy.gov [DOE]

    Electric transmission lines capable of operating at 69 kV or greater cannot be constructed along, across, or over any public highways or grounds outside of cities without a franchise from the...

  17. avoid power outages: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in the model of the Polish (transmission) power grid (2700 nodes and 3504 transmission lines). A cascade is initiated by a sufficiently severe initial contingency tripping....

  18. An Energy Efficient Semi-static Power Control and Link Adaptation Scheme in UMTS HSDPA

    E-Print Network [OSTI]

    Huang, Yi; Qiu, Ling

    2012-01-01T23:59:59.000Z

    High speed downlink packet access (HSDPA) has been successfully applied in commercial systems and improves user experience significantly. However, it incurs substantial energy consumption. In this paper, we address this issue by proposing a novel energy efficient semi-static power control and link adaptation scheme in HSDPA. Through estimating the EE under different modulation and coding schemes (MCSs) and corresponding transmit power, the proposed scheme can determine the most energy efficient MCS level and transmit power at the Node B. And then the Node B configure the optimal MCS level and transmit power. In order to decrease the signaling overhead caused by the configuration, a dual trigger mechanism is employed. After that, we extend the proposed scheme to the multiple input multiple output (MIMO) scenarios. Simulation results confirm the significant EE improvement of our proposed scheme. Finally, we give a discussion on the potential EE gain and challenge of the energy efficient mode switching between s...

  19. Variable-Width Datapath for On-Chip Network Static Power Reduction

    SciTech Connect (OSTI)

    Michelogiannakis, George; Shalf, John

    2013-11-13T23:59:59.000Z

    With the tight power budgets in modern large-scale chips and the unpredictability of application traffic, on-chip network designers are faced with the dilemma of designing for worst- case bandwidth demands and incurring high static power overheads, or designing for an average traffic pattern and risk degrading performance. This paper proposes adaptive bandwidth networks (ABNs) which divide channels and switches into lanes such that the network provides just the bandwidth necessary in each hop. ABNs also activate input virtual channels (VCs) individually and take advantage of drowsy SRAM cells to eliminate false VC activations. In addition, ABNs readily apply to silicon defect tolerance with just the extra cost for detecting faults. For application traffic, ABNs reduce total power consumption by an average of 45percent with comparable performance compared to single-lane power-gated networks, and 33percent compared to multi-network designs.

  20. COMMISSIONDECISION Small Power Plant Exemption (06-SPPE-2)

    E-Print Network [OSTI]

    ............................................................................. 14 Transmission Line Safety & Nuisance...................................................... 15 to review and license proposals to construct and operate large electric power plants, includingCOMMISSIONDECISION Small Power Plant Exemption (06-SPPE-2) Imperial County Order No: 07

  1. ORNL/TM-2008/156 The Integrity of ACSR Full Tension

    E-Print Network [OSTI]

    Pennycook, Steve

    Government or any agency thereof. * This report describes research jointly sponsored by the Electric Power investment in new infrastructure, existing overhead power transmission lines often need to operate in electric power transmission lines. This report presents a protocol for integrating analytical

  2. Design of the ILC RTML Extraction Lines

    SciTech Connect (OSTI)

    Seletskiy, S.; Tenenbaum, P.; Walz, D.; /SLAC; Solyak, N.; /Fermilab

    2011-10-17T23:59:59.000Z

    The ILC [1] Damping Ring to the Main Linac beamline (RTML) contains three extraction lines (EL). Each EL can be used both for an emergency abort dumping of the beam and tune-up continual train-by-train extraction. Two of the extraction lines are located downstream of the first and second stages of the RTML bunch compressor, and must accept both compressed and uncompressed beam with energy spreads of 2.5% and 0.15%, respectively. In this paper we report on an optics design that allowed minimizing the length of the extraction lines while offsetting the beam dumps from the main line by the distance required for acceptable radiation levels in the service tunnel. The proposed extraction lines can accommodate beams with different energy spreads while at the same time providing the beam size acceptable for the aluminum dump window. The RTML incorporates three extraction lines, which can be used for either an emergency beam abort or for a train-by-train extraction. The first EL is located downstream of the Damping Ring extraction arc. The other two extraction lines are located downstream of each stage of the two-stage bunch compressor. The first extraction line (EL1) receives 5GeV beam with an 0.15% energy spread. The extraction line located downstream of the first stage of bunch compressor (ELBC1) receives both compressed and uncompressed beam, and therefore must accept beam with both 5 and 4.88GeV energy, and 0.15% and 2.5% energy spread, respectively. The extraction line located after the second stage of the bunch compressor (ELBC2) receives 15GeV beam with either 0.15 or 1.8% energy spread. Each of the three extraction lines is equipped with the 220kW aluminum ball dump, which corresponds to the power of the continuously dumped beam with 5GeV energy, i.e., the beam trains must be delivered to the ELBC2 dump at reduced repetition rate.

  3. IEEE TRANSACTIONS ON POWER SYSTEMS (ACCEPTED) 1 Sparse Overcomplete Representations for

    E-Print Network [OSTI]

    Giannakis, Georgios

    Identification of Power Line Outages Hao Zhu, Student Member, IEEE, and Georgios B. Giannakis, Fellow, IEEE Abstract--Fast and accurate unveiling of power line outages is of paramount importance not only estimation, optimal power flow, real-time contingency analysis, and thus security assessment of power systems

  4. Electric Power Generation and Transmission (Iowa)

    Broader source: Energy.gov [DOE]

    Electric power generating facilities with a combined capacity greater than 25 MW, as well as associated transmission lines, may not be constructed or begin operation prior to the issuance of a...

  5. Insulator damage endangers public, power reliability; ratepayers...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for tips about multiple incidents of insulators damaged by firearms on its high-voltage power line near Joint Base Lewis-McChord in Tacoma, Wash. Damaged insulators can put...

  6. BONNEVILLE POWER ADMINISTRATION FOR IMMEDIATE RELEASE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for tips about multiple incidents of insulators damaged by firearms on its high- voltage power line near Joint Base Lewis-McChord in Tacoma, Wash. Damaged insulators can put...

  7. Multistability in nonlinear left-handed transmission lines David A. Powell,a

    E-Print Network [OSTI]

    Multistability in nonlinear left-handed transmission lines David A. Powell,a Ilya V. Shadrivov; published online 2 July 2008 Employing a nonlinear left-handed transmission line as a model system, we, which at higher power may result in chaotic dynamics of the transmission line. © 2008 American Institute

  8. EA-1849: Department of Energy Loan Guarantee to Ormat Nevada, Inc. for a Geothermal Power Facility in Nevada

    Broader source: Energy.gov [DOE]

    Ormat Nevada Inc. (ORMAT), through its subsidiaries, proposes to construct and operate three geothermal power production facilities and associated power transmission lines in northern Nevada. The...

  9. Master's programme in Electric Power Engineering Programme outline

    E-Print Network [OSTI]

    Lagergren, Jens

    of a power system with long transmission lines.The thesis defence took place at KTH in 1928.) Thus, afterMaster's programme in Electric Power Engineering Programme outline This programme consists three subject areas, namely: 1. Electric power systems (focusing on power system dynamics, stability

  10. Design considerations of translmission line superconductors for fast-cycling accelerator magnets

    SciTech Connect (OSTI)

    Piekarz, H.; /Fermilab

    2008-07-01T23:59:59.000Z

    Novel design options of HTS and LTS superconductor lines for fast-cycling accelerator magnets are presented. The cryogenic power losses in using these conductors in transmission line application to energize the accelerator magnet string are discussed. A test arrangement to measure power loss of the proposed superconductor lines operating up to 2 T/s ramp rate and 0.5 Hz repetition cycle is described.

  11. Omega Transmission Lines

    E-Print Network [OSTI]

    Vehmas, Joni

    2013-01-01T23:59:59.000Z

    In this paper, we show how bi-anisotropic media with omega-type response can be realized using periodically loaded transmission lines. General conditions for the needed unit cell circuit block are derived. Also, an implementation is shown and analyzed.

  12. Printed circuit dispersive transmission line

    DOE Patents [OSTI]

    Ikezi, H.; Lin-Liu, Y.R.; DeGrassie, J.S.

    1991-08-27T23:59:59.000Z

    A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission line between two adjacent periodic intersections to be longer than the other. 5 figures.

  13. Formation depths of Fraunhofer lines

    E-Print Network [OSTI]

    Gurtovenko, E A

    2015-01-01T23:59:59.000Z

    We have summed up our investigations performed in 1970--1993. The main task of this paper is clearly to show processes of formation of spectral lines as well as their distinction by validity and by location. For 503 photospheric lines of various chemical elements in the wavelength range 300--1000 nm we list in Table the average formation depths of the line depression and the line emission for the line centre and on the half-width of the line, the average formation depths of the continuum emission as well as the effective widths of the layer of the line depression formation. Dependence of average depths of line depression formation on excitation potential, equivalent widths, and central line depth are demonstrated by iron lines.

  14. Repowering a small coal-fired power plant

    SciTech Connect (OSTI)

    Miell, R.

    2007-11-15T23:59:59.000Z

    The Arkansas River Power Authority (ARPA) Lamar Repowering Project is moving forward. The new generator, capable of producing 18 MW of electricity, is scheduled to be online in June 2008 bringing the total generation to 43 MW. New coal handling equipment, with infrared fire detectors, is almost complete. The new 18 MW steam turbine will be cooled by an air-cooled condenser. Coal will be delivered in a railroad spur to an unloading site then be unloaded onto a conveyor under the tracks and conveyed to two storage domes each holding 6000 tons of coal. It will be drawn out of these through an underground conveyor system, brought into a crusher, conveyed through overhead conveyors and fed into the new coal- fired fluidized bed boilers. 1 photo.

  15. FNCS: A Framework for Power System and Communication Networks Co-Simulation

    SciTech Connect (OSTI)

    Ciraci, Selim; Daily, Jeffrey A.; Fuller, Jason C.; Fisher, Andrew R.; Marinovici, Laurentiu D.; Agarwal, Khushbu

    2014-04-13T23:59:59.000Z

    This paper describes the Fenix framework that uses a federated approach for integrating power grid and communication network simulators. Compared existing approaches, Fenix al- lows co-simulation of both transmission and distribution level power grid simulators with the communication network sim- ulator. To reduce the performance overhead of time synchro- nization, Fenix utilizes optimistic synchronization strategies that make speculative decisions about when the simulators are going to exchange messages. GridLAB-D (a distribution simulator), PowerFlow (a transmission simulator), and ns-3 (a telecommunication simulator) are integrated with the frame- work and are used to illustrate the enhanced performance pro- vided by speculative multi-threading on a smart grid applica- tion. Our speculative multi-threading approach achieved on average 20% improvement over the existing synchronization methods

  16. Drill string transmission line

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Bradford, Kline (Orem, UT); Fox, Joe (Spanish Fork, UT)

    2006-03-28T23:59:59.000Z

    A transmission line assembly for transmitting information along a downhole tool comprising a pin end, a box end, and a central bore traveling between the pin end and the box end, is disclosed in one embodiment of the invention as including a protective conduit. A transmission line is routed through the protective conduit. The protective conduit is routed through the central bore and the ends of the protective conduit are routed through channels formed in the pin end and box end of the downhole tool. The protective conduit is elastically forced into a spiral or other non-linear path along the interior surface of the central bore by compressing the protective conduit to a length within the downhole tool shorter than the protective conduit.

  17. EIS-0507: Boardman-Hemingway Transmission Line, Oregon and Idaho

    Broader source: Energy.gov [DOE]

    The Bureau of Land Management and the U.S. Forest Service are preparing, with DOE’s Bonneville Power Administration (BPA) as a cooperating agency, an EIS that evaluates the potential environmental impacts of a proposal to construct about 305 miles of 500-kV transmission line from northeast Oregon to southwest Idaho. BPA’s proposed action is to partially fund part the transmission line.

  18. A SUBSPACE APPROACH TO FAULT DIAGNOSTICS IN LARGE POWER SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and to fast detect and identify possible failures. In this article, we focus on failures in power lines which translate in sudden changes in the electric impedance. To keep track of the current flowing in the line), transmission line states are only refreshed on an hourly basis [1]. For rather static systems, the au- thors

  19. Nuclear Power

    E-Print Network [OSTI]

    Vilhena and Bardo E.J. Bodmann Carbon-#1;? in Terrestrial and Aquatic Environment of Ignalina Nuclear Power Plant: Sources of Production, Releases and Dose Estimates #3;?? Jonas Mazeika Impact of radionuclide discharges from Temel?n Nuclear Power... (chapter 5), ? Instrumentation and control (chapter 6), ? Diagnostics (chapter 7), ? Safety evaluation methods (chapters 6, 8, 9 and 10), ? Environment and nuclear power plants (chapters 11 - 15), ? Human factors (chapter 16), ? Software development...

  20. Power LCAT

    ScienceCinema (OSTI)

    Drennen, Thomas

    2014-06-27T23:59:59.000Z

    POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

  1. Power LCAT

    SciTech Connect (OSTI)

    Drennen, Thomas

    2012-08-15T23:59:59.000Z

    POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

  2. Sierra Pacific Power Company Alturas Transmission Line Project...

    Broader source: Energy.gov (indexed) [DOE]

    stockpiled soil; cover soil loads while in transit. Increase dust control watering when wind speeds exceed 15 miles per hour, depending upon the soil moisture content. Confine...

  3. Forced cooling of underground electric power transmission lines : design manual

    E-Print Network [OSTI]

    Brown, Jay A.

    1978-01-01T23:59:59.000Z

    The methodology utilized for the design of a forced-cooled pipe-type underground transmission system is presented. The material is divided into three major parts: (1) The Forced-cooled Pipe-Type Underground Transmission ...

  4. Power Business Line Decision Forums, as of March 14, 2005

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project Office PressPostdoctoraldecadal7Powder

  5. Increasing the Capacity of Existing Power Lines | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov.Energy02.pdf7 OPAM Flash2011-37EnergySubmitRoad |WaterEditionIncreasing the

  6. Suggested Practices for Avian Protection on Power Lines | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolar Jump to: navigation, searchNew Jersey) JumpIllinois:Land,

  7. Microsoft PowerPoint - one line pdfs for 1222.pptx

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaeferApril 1,(EAC) Richard2015MountainLLC TribalHouZe GT U.S.NeilTresPreliminary

  8. Increasing the Capacity of Existing Power Lines | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:DepartmentDepartment of EnergyEnergyContractsENERGY ANDThe

  9. Dual power, constant speed electric motor system

    DOE Patents [OSTI]

    Kirschbaum, H.S.

    1984-07-31T23:59:59.000Z

    A dual capacity permanent split capacitor electric motor system is provided with a stator having main and auxiliary windings. The main stator winding includes two winding sections which are connected in parallel with each other and across a pair of line terminals while the auxiliary winding is connected in series with a capacitor to form a circuit branch which is connected between the line terminals for operation at a first output power level. Switching means are provided to reconnect the main stator winding sections in series with each other and in series with a second capacitor to form a circuit branch which is connected between the line terminals while the stator auxiliary winding is connected directly between the line terminals for operation at a second output power level. Automatic rotation reversal occurs when the motor switches from the first to the second output power level. 6 figs.

  10. Dual power, constant speed electric motor system

    DOE Patents [OSTI]

    Kirschbaum, Herbert S. (Asheville, NC)

    1984-01-01T23:59:59.000Z

    A dual capacity permanent split capacitor electric motor system is provided with a stator having main and auxiliary windings. The main stator winding includes two winding sections which are connected in parallel with each other and across a pair of line terminals while the auxiliary winding is connected in series with a capacitor to form a circuit branch which is connected between the line terminals for operation at a first output power level. Switching means are provided to reconnect the main stator winding sections in series with each other and in series with a second capacitor to form a circuit branch which is connected between the line terminals while the stator auxiliary winding is connected directly between the line terminals for operation at a second output power level. Automatic rotation reversal occurs when the motor switches from the first to the second output power level.

  11. Clean Coal Power Initiative

    SciTech Connect (OSTI)

    Doug Bartlett; Rob James; John McDermott; Neel Parikh; Sanjay Patnaik; Camilla Podowski

    2006-03-31T23:59:59.000Z

    This report is the fifth quarterly Technical Progress Report submitted by NeuCo, Incorporated, under Award Identification Number, DE-FC26-04NT41768. This award is part of the Clean Coal Power Initiative (''CCPI''), the ten-year, $2B initiative to demonstrate new clean coal technologies in the field. This report is one of the required reports listed in Attachment B Federal Assistance Reporting Checklist, part of the Cooperative Agreement. The report covers the award period January 1, 2006 - March 31, 2006 and NeuCo's efforts within design, development, and deployment of on-line optimization systems during that period.

  12. Maersk Line Equipment guide

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby/%2AOU1a ComplexMaersk Line Equipment

  13. Power system

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-03-18T23:59:59.000Z

    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.

  14. Malcolm, N. and Aggarwal, R.k. (2014) An Analysis of Reducing Back Flashover Faults with Surge Arresters on 69/138 kV Double

    E-Print Network [OSTI]

    McCusker, Guy

    Arresters on 69/138 kV Double Circuit Transmission Lines Due to Direct Lightning Strikes on the Shield Wires-EMTP, Back flashover faults, Lightning strokes, Surge arrester, Transmission lines. Abstract Back flashover causes of power interruptions on the double-circuit 69/138 kV overhead transmission lines in Jamaica

  15. LINE Commission Visits Idaho National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 1 2 3 4 5 6 7 84, LINE Commission

  16. Strathclyde powerS ahead

    E-Print Network [OSTI]

    Mottram, Nigel

    Strathclyde powerS ahead the future of renewable energy SHARING AND ENHANCING RESEARCH Discover the vision of Principal Professor Jim McDonald THE FUTURE OF ENERGY Strathclyde pioneers renewableEdicinE Snapshot the reSearcher Following a decade of environmental research in her native egypt, nabila saleem

  17. Solar thermal power system

    DOE Patents [OSTI]

    Bennett, Charles L.

    2010-06-15T23:59:59.000Z

    A solar thermal power generator includes an inclined elongated boiler tube positioned in the focus of a solar concentrator for generating steam from water. The boiler tube is connected at one end to receive water from a pressure vessel as well as connected at an opposite end to return steam back to the vessel in a fluidic circuit arrangement that stores energy in the form of heated water in the pressure vessel. An expander, condenser, and reservoir are also connected in series to respectively produce work using the steam passed either directly (above a water line in the vessel) or indirectly (below a water line in the vessel) through the pressure vessel, condense the expanded steam, and collect the condensed water. The reservoir also supplies the collected water back to the pressure vessel at the end of a diurnal cycle when the vessel is sufficiently depressurized, so that the system is reset to repeat the cycle the following day. The circuital arrangement of the boiler tube and the pressure vessel operates to dampen flow instabilities in the boiler tube, damp out the effects of solar transients, and provide thermal energy storage which enables time shifting of power generation to better align with the higher demand for energy during peak energy usage periods.

  18. Reliability Estimates for Power Supplies

    SciTech Connect (OSTI)

    Lee C. Cadwallader; Peter I. Petersen

    2005-09-01T23:59:59.000Z

    Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When one of the power supplies fails to operate, the research program has to be either temporarily changed or halted. If one of the power supplies for the toroidal or ohmic heating coils fails, the operations have to be suspended or the research is continued at de-rated parameters until a repair is completed. If one of the power supplies used in the auxiliary plasma heating systems fails the research is often temporarily changed until a repair is completed. The power supplies are operated remotely and repairs are only performed when the power supplies are off line, so that failure of a power supply does not cause any risk to personnel. The DIII-D Trouble Report database was used to determine the number of power supply faults (over 1,700 reports), and tokamak annual operations data supplied the number of shots, operating times, and power supply usage for the DIII-D operating campaigns between mid-1987 and 2004. Where possible, these power supply failure rates from DIII-D will be compared to similar work that has been performed for the Joint European Torus equipment. These independent data sets support validation of the fusion-specific failure rate values.

  19. 1052 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 25, NO. 2, MAY 2010 Co-Optimization of Generation Unit Commitment

    E-Print Network [OSTI]

    Oren, Shmuel S.

    into electric network optimization models. Optimal transmission switching is a straight- forward way to leverage economics, power system reliability, power transmission control, power transmission economics. NOMENCLATURE. Generator. Set of generators at node . Transmission element (line or transformer). Set of transmission

  20. Power Flow Controller for Renewables: Transformer-less Unified Power Flow Controller for Wind and Solar Power Transmission

    SciTech Connect (OSTI)

    None

    2012-02-08T23:59:59.000Z

    GENI Project: MSU is developing a power flow controller to improve the routing of electricity from renewable sources through existing power lines. The fast, innovative, and lightweight circuitry that MSU is incorporating into its controller will eliminate the need for a separate heavy and expensive transformer, as well as the construction of new transmission lines. MSU’s controller is better suited to control power flows from distributed and intermittent wind and solar power systems than traditional transformer-based controllers are, so it will help to integrate more renewable energy into the grid. MSU‘s power flow controller can be installed anywhere in the existing grid to optimize energy transmission and help reduce transmission congestion.

  1. Power combiner

    DOE Patents [OSTI]

    Arnold, Mobius; Ives, Robert Lawrence

    2006-09-05T23:59:59.000Z

    A power combiner for the combining of symmetric and asymmetric traveling wave energy comprises a feed waveguide having an input port and a launching port, a reflector for reflecting launched wave energy, and a final waveguide for the collection and transport of launched wave energy. The power combiner has a launching port for symmetrical waves which comprises a cylindrical section coaxial to the feed waveguide, and a launching port for asymmetric waves which comprises a sawtooth rotated about a central axis.

  2. EA-1960: Townsite Solar Project Transmission Line, Clark County, Nevada

    Broader source: Energy.gov [DOE]

    The Bureau of Land Management, with Western Area Power Administration as a cooperating agency, prepared an EA to evaluate potential impacts of a proposal to build and operate a 180-MW photovoltaic facility; a 220, 230, or 500 kV transmission line; and associated facilities in Clark County, Nevada.

  3. EIS-0124: Conrad-Shelby Transmission Line Project, Montana

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Western Area Power Administration developed this statement to assess the environmental impact of adding a 230 kV transmission line between Conrad and Shelby, Montana and a new substation near Shelby to update the stressed electrical transmission system.

  4. EIS-0090: Fort Peck-Havre Transmission Line Project, Montana

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy’s Western Area Power Administration prepared this statement to assess the potential environmental and socioeconomic implications of its proposed action to construct and operate a 230kV transmission line from Fort Peck to Havre, Montana, with three intermediate interconnecting substations.

  5. A COMPUTATIONAL ANALYSIS OF THE OPTIMAL POWER FLOW PROBLEM

    E-Print Network [OSTI]

    algorithms to handle this problem for the e - 1 security constrained optimal power flow problem. We also.3. The MATPOWER package 4 2.4. Graph theoretic notions 4 3. Security constrained optimal power flow 5 3, such as the breakdown of a generator or a fault in some transmission line. The importance of being able to supply power

  6. 1104 IEEE Transactions on Power Systems, Vol. 10, No. 2, May 1995 SUPERVISORYCONTROLOFELECTRIC POWERTRANSMISSION NETWORKS

    E-Print Network [OSTI]

    -restoration problem, aiming to increase the steady-state security level of a power network during restoration for largepower networks. Keywords: Discrete Event Systems, Static Security Assessment, Line security levelthroughout the restorationprocess. Specificallywe use a lbbus, 40-line transmission network

  7. Proceedings of the ASCE Earth&Space 2006 Conference, League City, Texas, April 2006 Space Power Grid-Evolutionary Approach To Space Solar Power

    E-Print Network [OSTI]

    of unlimited power remains distant because of the huge cost of sending photovoltaic arrays to geosynchronous line costs and vastly improved reliability, smoothness and market reach of power output from

  8. Cleco Power- Power Miser New Home Program

    Broader source: Energy.gov [DOE]

    Louisiana's Cleco Power offers energy efficiency incentives to eligible customers. Cleco Power offers a rate discount for residential customers building homes that meet the Power Miser Program...

  9. Corona performance of a compact 230-kV line

    SciTech Connect (OSTI)

    Chartier, V.L.; Blair, D.E. [Bonneville Power Administration, Vancouver, WA (United States). Division of Laboratories; Easley, M.D.; Raczkowski, R.T. [Puget Sound Power and Light Co., Bellevue, WA (United States)

    1994-12-31T23:59:59.000Z

    Permitting requirements and the acquisition of new rights-of-way for transmission facilities has in recent years become increasingly difficult for most utilities, including Puget Sound Power and Light Company. In order to maintain a high degree of reliability of service while being responsive to public concerns regarding the siting of high voltage (HV) transmission facilities, Puget Power has found it necessary to more heavily rely upon the use of compact lines in franchise corridors. Compaction does, however, precipitant increased levels of audible noise (AN) and radio and TV interference (RI and TVI) due to corona on the conductors and insulator assemblies. Puget Power relies upon the Bonneville Power Administration (BPA) Corona and Field Effects computer program to calculate AN and RI for new lines. Since there was some question of the program`s ability to accurately represent quiet 230-kV compact designs, a joint project was undertaken with BPA to verify the program`s algorithms. Long-term measurements made on an operating Puget Power 230-kV compact line confirmed the accuracy of BPA`s AN model; however, the RI measurements were much lower than predicted by the BPA computer and other programs. This paper also describes how the BPA computer program can be used to calculate the voltage needed to expose insulator assemblies to the correct electric field in single test setups in HV laboratories.

  10. Corona performance of a compact 230-kV line

    SciTech Connect (OSTI)

    Chartier, V.L.; Blair, D.E. [Bonneville Power Administration, Vancouver, WA (United States). Division of Labs.] [Bonneville Power Administration, Vancouver, WA (United States). Division of Labs.; Easley, M.D.; Raczkowski, R.T. [Puget Sound Power and Light Co., Bellevue, WA (United States)] [Puget Sound Power and Light Co., Bellevue, WA (United States)

    1995-01-01T23:59:59.000Z

    Permitting requirements and the acquisition of new rights-of-way for transmission facilities has in recent years become increasingly difficult for most utilities, including Puget Sound Power and Light Company. In order to maintain a high degree of reliability of service while being responsive to public concerns regarding the siting of high voltage (HV) transmission facilities, Puget Power has found it necessary to more heavily rely upon the use of compact lines in franchise corridors. Compaction does, however, precipitate increased levels of audible noise (AN) and radio and TV interference (RI and TVI) due to corona on the conductors and insulator assemblies. Puget Power relies upon the Bonneville Power Administration (BPA) Corona and Field Effects computer program to calculate AN and RI for new lines. Since there was some question of the program`s ability to accurately represent quiet 230-kV compact designs, a joint project was undertaken with BPA to verify the program`s algorithms. Long-term measurements made on an operating Puget Power 230-kV compact line confirmed the accuracy of BPA`s AN model; however, the RI measurements were much lower than predicted by the BPA and other programs. This paper also describes how the BPA computer program can be used to calculate the voltage needed to expose insulator assemblies to the correct electric field in single test setups in HV laboratories.

  11. Bipolar pulse forming line

    DOE Patents [OSTI]

    Rhodes, Mark A. (Pleasanton, CA)

    2008-10-21T23:59:59.000Z

    A bipolar pulse forming transmission line module for linear induction accelerators having first, second, third, fourth, and fifth planar conductors which form an interleaved stack with dielectric layers between the conductors. Each conductor has a first end, and a second end adjacent an acceleration axis. The first and second planar conductors are connected to each other at the second ends, the fourth and fifth planar conductors are connected to each other at the second ends, and the first and fifth planar conductors are connected to each other at the first ends via a shorting plate adjacent the first ends. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short a high voltage from the first end of the third planar conductor to the first end of the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.

  12. EC Transmission Line Materials

    SciTech Connect (OSTI)

    Bigelow, Tim S [ORNL

    2012-05-01T23:59:59.000Z

    The purpose of this document is to identify materials acceptable for use in the US ITER Project Office (USIPO)-supplied components for the ITER Electron cyclotron Heating and Current Drive (ECH&CD) transmission lines (TL), PBS-52. The source of material property information for design analysis shall be either the applicable structural code or the ITER Material Properties Handbook. In the case of conflict, the ITER Material Properties Handbook shall take precedence. Materials selection, and use, shall follow the guidelines established in the Materials Assessment Report (MAR). Materials exposed to vacuum shall conform to the ITER Vacuum Handbook. [Ref. 2] Commercial materials shall conform to the applicable standard (e.g., ASTM, JIS, DIN) for the definition of their grade, physical, chemical and electrical properties and related testing. All materials for which a suitable certification from the supplier is not available shall be tested to determine the relevant properties, as part of the procurement. A complete traceability of all the materials including welding materials shall be provided. Halogenated materials (example: insulating materials) shall be forbidden in areas served by the detritiation systems. Exceptions must be approved by the Tritium System and Safety Section Responsible Officers.

  13. Environmental assessment

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    The proposed overhead power line construction project (Sand Dunes to Ochoa, in Eddy and Lea Counties, New Mexico) will supply additional electric power to the Waste Isolation Pilot Plant (WIPP) and involve construction of a new electric substation at WIPP. This would provide a redundant electrical power source to WIPP. A finding of no significant impact is made.

  14. EIS-0159: Flatiron-Erie 115-kV Transmission Line

    Broader source: Energy.gov [DOE]

    "The Western Area Power Administration proposes to build 27 new wood H-frame structures along the line, to replace or modify 45 of the existing structures and to remove 11 of them."

  15. EA-1952: Lane-Wendson No. 1 Transmission Line Rebuild Project; Lane County, Oregon

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration is preparing an EA to assess the potential environmental impacts of the proposed rebuild of the 41.3-mile Lane-Wendson No. 1 transmission line between Eugene and Florence, Oregon.

  16. EIS-0078: Jonesboro-Hergett 161-kV Transmission Line

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Southwestern Power Administration developed this statement to assess the environmental and socioeconomic impacts of a 161-kilovolt transmission line in Craighead County, Arkansas, including its proposed and alternate routes.

  17. EA-1896: Williston to Stateline Transmission Line Project, Mountrail Williams Electric Cooperative, Williston, North Dakota

    Broader source: Energy.gov [DOE]

    DOE’s Western Area Power Administration is preparing this EA to evaluate the environmental impacts of interconnecting the proposed Stateline I transmission line, in Williston, North Dakota, to Western’s transmission system.

  18. GEOTHERMAL POWER GENERATION PLANT

    SciTech Connect (OSTI)

    Boyd, Tonya

    2013-12-01T23:59:59.000Z

    Oregon Institute of Technology (OIT) drilled a deep geothermal well on campus (to 5,300 feet deep) which produced 196oF resource as part of the 2008 OIT Congressionally Directed Project. OIT will construct a geothermal power plant (estimated at 1.75 MWe gross output). The plant would provide 50 to 75 percent of the electricity demand on campus. Technical support for construction and operations will be provided by OIT’s Geo-Heat Center. The power plant will be housed adjacent to the existing heat exchange building on the south east corner of campus near the existing geothermal production wells used for heating campus. Cooling water will be supplied from the nearby cold water wells to a cooling tower or air cooling may be used, depending upon the type of plant selected. Using the flow obtained from the deep well, not only can energy be generated from the power plant, but the “waste” water will also be used to supplement space heating on campus. A pipeline will be construction from the well to the heat exchanger building, and then a discharge line will be construction around the east and north side of campus for anticipated use of the “waste” water by facilities in an adjacent sustainable energy park. An injection well will need to be drilled to handle the flow, as the campus existing injection wells are limited in capacity.

  19. Powerful glow discharge excilamp

    DOE Patents [OSTI]

    Tarasenko, Victor F. (Tomsk, RU); Panchenko, Aleksey N. (Tomsk, RU); Skakun, Victor S. (Tomsk, RU); Sosnin, Edward A. (Tomsk, RU); Wang, Francis T. (Danville, CA); Myers, Booth R. (Livermore, CA); Adamson, Martyn G. (Danville, CA)

    2002-01-01T23:59:59.000Z

    A powerful glow discharge lamp comprising two coaxial tubes, the outer tube being optically transparent, with a cathode and anode placed at opposite ends of the tubes, the space between the tubes being filled with working gas. The electrodes are made as cylindrical tumblers placed in line to one other in such a way that one end of the cathode is inserted into the inner tube, one end of the anode coaxially covers the end of the outer tube, the inner tube penetrating and extending through the anode. The increased electrodes' surface area increases glow discharge electron current and, correspondingly, average radiation power of discharge plasma. The inner tube contains at least one cooling liquid tube placed along the axis of the inner tube along the entire lamp length to provide cathode cooling. The anode has a circumferential heat extracting radiator which removes heat from the anode. The invention is related to lighting engineering and can be applied for realization of photostimulated processes under the action of powerful radiation in required spectral range.

  20. An integrated security framework for GOSS power grid analytics platform

    SciTech Connect (OSTI)

    Gibson, Tara D.; Ciraci, Selim; Sharma, Poorva; Allwardt, Craig H.; Rice, Mark J.; Akyol, Bora A.

    2014-06-23T23:59:59.000Z

    In power grid operations, security is an essential component for any middleware platform. Security protects data against unwanted access as well as cyber attacks. GridOpticsTM Software System (GOSS) is an open source power grid analytics platform that facilitates ease of access between applications and data sources and promotes development of advanced analytical applications. GOSS contains an API that abstracts many of the difficulties in connecting to various heterogeneous data sources. A number of applications and data sources have already been implemented to demonstrate functionality and ease of use. A security framework has been implemented which leverages widely accepted, robust JavaTM security tools in a way such that they can be interchanged as needed. This framework supports the complex fine-grained, access control rules identified for the diverse data sources already in GOSS. Performance and reliability are also important considerations in any power grid architecture. An evaluation is done to determine the overhead cost caused by security within GOSS and ensure minimal impact to performance.

  1. Remote grounding device for subterranean power systems

    SciTech Connect (OSTI)

    Wilson, D.P.

    1987-04-28T23:59:59.000Z

    A remote grounding device is described for subterranean power cable of an insulated conducting cable which comprises: a grounding module and a grounding mechanism; the grounding module is an assembly of a power buss, an insulation sheath, a reducing tap plug and an insulating receptacle cap. The power buss is intimately connected to the conducting cable by a means of an attachment. The reducing tap plug fits concentrically over the power buss and has a tubular probe path void contiguous and in-line to the power buss and a lip around the outer periphery of the reducing tap plug. The insulating receptacle cap covers the tubular void. The insulating sheath covers and holds reducing tap plug and power cable by a multiplicity of locking means and a grounding mechanism assembly of a frame, a probe, a power drive means, a grounding means, a handle means.

  2. User Interfaces 1 Command Line Interfaces

    E-Print Network [OSTI]

    Verschelde, Jan

    User Interfaces 1 Command Line Interfaces getting arguments of the command line a command line 2013 1 / 39 #12;User Interfaces 1 Command Line Interfaces getting arguments of the command line a command line interface to store points fitting points with polyfit of numpy 2 Encapsulation by Object

  3. A Cycle-Based Formulation and Valid Inequalities for DC Power ...

    E-Print Network [OSTI]

    Burak Kocuk

    2014-12-19T23:59:59.000Z

    Dec 19, 2014 ... Abstract: It is well-known that optimizing network topology by switching on and off transmission lines improves the efficiency of power delivery in ...

  4. Fuzzy neural network pattern recognition algorithm for classification of the events in power system networks 

    E-Print Network [OSTI]

    Vasilic, Slavko

    2004-09-30T23:59:59.000Z

    This dissertation introduces advanced artificial intelligence based algorithm for detecting and classifying faults on the power system transmission line. The proposed algorithm is aimed at substituting classical relays ...

  5. Power Factor Compensation (PFC) Power Factor Compensation

    E-Print Network [OSTI]

    Knobloch,Jürgen

    Power Factor Compensation (PFC) Power Factor Compensation The power factor (PF) is defined as the ratio between the active power and the apparent power of a system. If the current and voltage are periodic with period , and [ ), then the active power is defined by ( ) ( ) (their inner product

  6. Star Power

    ScienceCinema (OSTI)

    None

    2014-11-18T23:59:59.000Z

    The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

  7. Star Power

    SciTech Connect (OSTI)

    None

    2014-10-17T23:59:59.000Z

    The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

  8. EIS-0118: Proposed Eugene-Medford 500-kV Transmission Line

    Broader source: Energy.gov [DOE]

    The U.S. Department of Interior developed this statement to assess the environmental impact of a proposed 500-kilovolt transmission line linking Eugene and Medford, Oregon, that would cross through public lands. The Bonneville Power Administration (BPA) would provide service to the proposed line and is a cooperating agency in the statement. BPA adopted the EIS on 7/10/1985.

  9. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 27, NO. 4, NOVEMBER 2012 2215 Sparse Overcomplete Representations for Efficient

    E-Print Network [OSTI]

    Giannakis, Georgios

    Representations for Efficient Identification of Power Line Outages Hao Zhu, Student Member, IEEE, and Georgios B. Giannakis, Fellow, IEEE Abstract--Fast and accurate unveiling of power-line outages is of paramount single and double line-outages or they invoke less pragmatic as- sumptions such as conditionally

  10. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 22, NO. 2, MAY 2007 505 Detection of Island Formation and Identification

    E-Print Network [OSTI]

    Gross, George

    and Identification of Causal Factors Under Multiple Line Outages Teoman Güler, Student Member, IEEE, and George Gross formation in power system networks under multiple line outages. We construct the approach by gaining insights into the topological impacts of outaged lines on system connectivity from the use of power

  11. New protection method for HVDC lines including cables

    SciTech Connect (OSTI)

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

    1995-10-01T23:59:59.000Z

    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.

  12. Top 9 Things You Didn't Know About America's Power Grid | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Top 9 Things You Didn't Know About America's Power Grid Top 9 Things You Didn't Know About America's Power Grid November 20, 2014 - 10:07am Addthis Electrical transmission lines...

  13. Village Power `97. Proceedings

    SciTech Connect (OSTI)

    Cardinal, J.; Flowers, L.; Taylor, R.; Weingart, J. [eds.

    1997-09-01T23:59:59.000Z

    It is estimated that two billion people live without electricity and its services. In addition, there is a sizable number of rural villages that have limited electrical service, with either part-day operation by diesel gen-sets or partial electrification (local school or community center and several nearby houses). For many villages connected to the grid, power is often sporadically available and of poor quality. The U.S. National Renewable Energy Laboratory (NREL) in Golden, Colorado, has initiated a program to address these potential electricity opportunities in rural villages through the application of renewable energy (RE) technologies. The objective of this program is to develop and implement applications that demonstrate the technical performance, economic competitiveness, operational viability, and environmental benefits of renewable rural electric solutions, compared to the conventional options of line extension and isolated diesel mini-grids. These four attributes foster sustainability; therefore, the program is entitled Renewables for Sustainable Village Power (RSVP). The RSVP program is a multi-disciplinary, multi-technology, multi-application program composed of six key activities, including village application development, computer model development, systems analysis, pilot project development, technical assistance, and an Internet-based village power project database. The current program emphasizes wind, photovoltaics (PV), and their hybrids with diesel gen-sets. NREL`s RSVP team is currently involved in rural electricity projects in thirteen countries, with U.S., foreign, and internationally based agencies and institutions. This document contains reports presented at the Proceedings of Village Power, 1997. Individual projects have been processed separately for the United States Department of Energy databases.

  14. Using a Balun Transformer Combiner for High Power Microwave Experiments

    SciTech Connect (OSTI)

    Kaufman, Michael C [ORNL; Pesavento, Philip V [ORNL

    2011-01-01T23:59:59.000Z

    A novel coaxial power combiner design has been duplicated that has distinct advantages over other combiner geometries that can handle high power. This design is being applied to combine four 3 kW power supplies to obtain a 10 kW, 5 MHz system for an ICRF antenna on HSX. In the past, Wilkinson type combiners have had limited application to high power systems because of the lack of non-inductive, high power, 100 Omega balance loads. With this new design, standard 50 Omega dummy loads can be used instead for the balance load. The cost is considerably lower than lumped element combiner designs which are dominated by capacitor costs. At such a relatively low frequency, a 3-dB quarter-wave coupled-line coupler becomes impractically long, and a conventional branch-line hybrid requires 35 Omega-line, which is commercially unavailable. The balun combiner uses less transmission line than a ring hybrid and has good bandwidth characteristics even away from its best line impedance. Theoretical calculations and modeling were performed for line impedances from 65 Omega to 75 Omega. Measurements from a low-power test device show excellent agreement with theory, and construction of the high power system is underway.

  15. Power superconducting power transmission cable

    DOE Patents [OSTI]

    Ashworth, Stephen P. (Cambridge, GB)

    2003-01-01T23:59:59.000Z

    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.

  16. Power Right. Power Smart. Efficient Computer Power Supplies and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    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...

  17. Silicon Valley Power and Oklahoma Municipal Power Authority Win...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Silicon Valley Power and Oklahoma Municipal Power Authority Win 2014 Public Power Wind Awards Silicon Valley Power and Oklahoma Municipal Power Authority Win 2014 Public Power Wind...

  18. Tidal power

    SciTech Connect (OSTI)

    Hammons, T.J. (Glasgow Univ., Scotland (United Kingdom))

    1993-03-01T23:59:59.000Z

    The paper reviews the physics of tidal power considering gravitational effects of moon and sun; semidiurnal, diurnal, and mixed tides; and major periodic components that affect the tidal range. Shelving, funneling, reflection, and resonance phenomena that have a significant effect on tidal range are also discussed. The paper then examines tidal energy resource for principal developments estimated from parametric modeling in Europe and worldwide. Basic parameters that govern the design of tidal power schemes in terms of mean tidal range and surface area of the enclosed basin are identified. While energy extracted is proportional to the tidal amplitude squared, requisite sluicing are is proportional to the square root of the tidal amplitude. Sites with large tidal amplitudes are therefore best suited for tidal power developments, whereas sites with low tidal amplitudes have sluicing that may be prohibitive. It is shown that 48% of the European tidal resource is in the United Kingdom, 42% in France and 8% in Ireland, other countries having negligible potential. Worldwide tidal resource is identified. Tidal barrage design and construction using caissons is examined, as are alternative operating modes (single-action generation, outflow generation, flood generation, two-way generation, twin basin generation, pumping, etc), development trends and possibilities, generation cost at the barrage boundary, sensitivity to discount rates, general economics, and markets. Environmental effects, and institutional constraints to the development of tidal barrage schemes are also discussed.

  19. The Limited Influence of Pressure Gradients on Late-type Stellar Line Asymmetries

    E-Print Network [OSTI]

    C. Allende Prieto; R. J. Garcia Lopez; J. Trujillo Bueno

    1997-01-13T23:59:59.000Z

    Line asymmetries and shifts are a powerful tool for studying velocity fields in the stellar photospheres. Other effects, however, could also generate asymmetries blurring the information of the velocity patterns. We have studied the shifts and asymmetries induced in the profiles of spectral lines by pressure effects. The best theoretical and experimental data on line broadening and shifts caused by collisions with atomic hydrogen were used to analyze the NaI D and three CaI lines. Line bisectors of synthetic spectra computed with accurate data for the NaI and CaI lines are compared with very high resolution high signal-to-noise ratio solar spectra and indicate that pressure broadening reproduces the wings of the observed lines, but pressure shifts introduce neither asymmetries nor shifts comparable to the observed ones.

  20. Pulse shaping with transmission lines

    DOE Patents [OSTI]

    Wilcox, Russell B. (Oakland, CA)

    1987-01-01T23:59:59.000Z

    A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.

  1. Pulse shaping with transmission lines

    DOE Patents [OSTI]

    Wilcox, R.B.

    1985-08-15T23:59:59.000Z

    A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.

  2. Electrical transmission line diametrical retainer

    DOE Patents [OSTI]

    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)

    2004-12-14T23:59:59.000Z

    The invention is a mechanism for retaining an electrical transmission line. In one embodiment of the invention it is a system for retaining an electrical transmission line within down hole components. In accordance with one aspect of the invention, the system includes a plurality of downhole components, such as sections of pipe in a drill string. The system also includes a coaxial cable running between the first and second end of a drill pipe, the coaxial cable having a conductive tube and a conductive core within it. The invention allows the electrical transmission line to with stand the tension and compression of drill pipe during routine drilling cycles.

  3. Tethered nuclear power for the Space Station

    SciTech Connect (OSTI)

    Bents, D.J.

    1985-01-01T23:59:59.000Z

    A nuclear space power system the SP-100 is being developed for future missions where large amounts of electrical power will be required. Although it is primarily intended for unmanned spacecraft, it can be adapted to a manned space platform by tethering it above the station through an electrical transmission line which isolates the reactor far away from the inhabited platform and conveys its power back to where it is needed. The transmission line, used in conjunction with an instrument rate shield, attenuates reactor radiation in the vicinity of the space station to less than one-one hundredth of the natural background which is already there. This combination of shielding and distance attenuation is less than one-tenth the mass of boom-mounted or onboard man-rated shields that are required when the reactor is mounted nearby. This paper describes how connection is made to the platform (configuration, operational requirements) and introduces a new element the coaxial transmission tube which enables efficient transmission of electrical power through long tethers in space. Design methodology for transmission tubes and tube arrays is discussed. An example conceptual design is presented that shows SP-100 at three power levels 100 kWe, 300 kWe, and 1000 kWe connected to space station via a 2 km HVDC transmission line/tether. Power system performance, mass, and radiation hazard are estimated with impacts on space station architecture and operation.

  4. Utility Power Network Systems This research addresses the issues of security, system behavior, and socio-economic

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    to the LADWP power system through two 500kV AC transmission lines and one 500kV DC transmission line. From Fig- economic component. July, 2003. Website_ResearchActivities1 #12;Background LADWP's power transmission probabilistic systems analysis of societal interests. Fig.1. Service areas of LADWP Fig.2. Electric power output

  5. Detection and Identification of Data Attacks in Power System Kin Cheong Sou, Henrik Sandberg and Karl Henrik Johansson

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    critically on the proper operation of the electric power distribution and transmission system, which measure data such as transmission line power flows, bus power injections and part of the bus voltages the attacked transmission lines. I. INTRODUCTION A. SCADA System and State Estimation A modern society relies

  6. Abstract: We proposed the use of power distribution network (PDN) of a microprocessor for ubiquitous access of

    E-Print Network [OSTI]

    Ha, Dong S.

    Abstract: We proposed the use of power distribution network (PDN) of a microprocessor impulses superposed on a power line of a microprocessor. Considerations for data recovery block design supply and at a pulse repetition rate of 200 MHz. Keywords -- Microprocessor; Power line communication

  7. Wind power and Wind power and

    E-Print Network [OSTI]

    Wind power and the CDM #12; Wind power and the CDM Emerging practices in developing wind power 2005 Jyoti P. Painuly, Niels-Erik Clausen, Jørgen Fenhann, Sami Kamel and Romeo Pacudan #12; WIND POWER AND THE CDM Emerging practices in developing wind power projects for the Clean Development Mechanism Energy

  8. Type A Accident Investigation Report – Western Area Power Administration Investigation of the June 7, 2004, Construction Contractor Electrical Accident at Double-Circuit Structure 38/1, Watertown-Granite Falls 230-kV Transmission Line East of Watertown, S

    Broader source: Energy.gov [DOE]

    This report is an independent product of the Type A Accident Investigation board appointed by Timothy J. Meeks, Chief Operating Officer, Western Area Power Administration.

  9. Transmission Lines Emulating Moving Media

    E-Print Network [OSTI]

    Vehmas, Joni; Tretyakov, Sergei

    2014-01-01T23:59:59.000Z

    In this paper, we show how the electromagnetic phenomena in moving magnetodielectric media can be emulated using artificial composite structures at rest. In particular, we introduce nonreciprocal periodically loaded transmission lines which support waves obeying the same rules as plane electromagnetic waves in moving media. Because the actual physical structure is at rest, in these transmission lines there are no fundamental limitations on the velocity values, which may take values larger than the speed of light or even complex values (considering complex amplitudes in the time-harmonic regime). An example circuit of a unit cell of a "moving" transmission line is presented and analyzed both numerically and experimentally. The special case of composite right/left handed host line is also studied numerically. Besides the fundamental interest, the study is relevant for potential applications in realizing engineered materials for various transformations of electromagnetic fields.

  10. The beauty of laser lines

    E-Print Network [OSTI]

    Kim, Sue-Mie

    1993-01-01T23:59:59.000Z

    A line, the simplest way to express an artist's feelings or interpretation of an object, has its own emotions that an artist can employ for her purpose. Laser light, the most self-concentrated, self-sustained and directed, ...

  11. THE SYSTEM OF POWER SUPPLIES, CONTROL AND MODULATION OF ELECTRON GUN FOR FREE ELECTRON LASER

    E-Print Network [OSTI]

    Kozak, Victor R.

    inverter, timer and two fiber optic converters. Power inverter has 220V input line with 50 or 60Hz. The output of power inverter is connected to input coil of isolated power transformer (300kV). Timer Optic converter St 1GHz ACStabilazer Power Inverter 20kHz CAN Fiber Optic Converter 1MHz St Fiber Optic

  12. Analysis of interconnect microstrip lines

    E-Print Network [OSTI]

    Luong, Giam-Minh

    1992-01-01T23:59:59.000Z

    of the return loss of the slot-coupled microstrip dipole. Section C presents two simulations of the return loss on the slot- coupled rectangular patch antenna. A. Interconnect of Microstrip Lines Several circuits with the geometry of Figure 1 were fabricated.... Experimental and Theoretical Results of the Interconnect Two circuits were designed and fabricated. Each circuit consists of two substrates as shown in Figure 9. One substrate has an open microstrip line etched in one side and an aperture etched...

  13. Fin-line horn antenna

    DOE Patents [OSTI]

    Reindel, John (San Diego, CA)

    1990-01-01T23:59:59.000Z

    A fin line circuit card containing a fin line slot feeds a dipole antenna ich extends a quarterwave outside the waveguide and provides an energy beam focal point at or near the open end of the waveguide. The dipole antenna thus maintains a wide and nearly constant beamwidth, low VSWR and a circular symmetric radiation pattern for use in electronic warfare direction finding and surveillance applications.

  14. EIS-0060: Bonneville Power Administration Proposed FY 1981 Program

    Broader source: Energy.gov [DOE]

    The Bonneville Power Administration developed this statement to evaluate environmental impacts of the proposed fiscal year 1981 construction and maintenance program to construct system additions and modifications including 303–326 miles of new 500 kilovolt transmission lines, approximately 131 miles of upgraded existing lines, 6 new substations, and facility additions at 7–8 existing substations.

  15. Restoration strategy for power distribution networks using optimal supervisory control

    E-Print Network [OSTI]

    Lim, Jong-Tae

    the supervisory control technique to a line-restoration problem aiming to increase the steady-state security level of lines and transformers and the bus voltage for the security assessment. 2 Preliminary The supervisoryRestoration strategy for power distribution networks using optimal supervisory control M.-S. Lee

  16. Waste Heat Powered Ammonia Absorption Refrigeration Unit for LPG Recovery

    SciTech Connect (OSTI)

    Donald C, Energy Concepts Co.; Lauber, Eric, Western Refining Co.

    2008-06-20T23:59:59.000Z

    An emerging DOE-sponsored technology has been deployed. The technology recovers light ends from a catalytic reformer plant using waste heat powered ammonia absorption refrigeration. It is deployed at the 17,000 bpd Bloomfield, New Mexico refinery of Western Refining Company. The technology recovers approximately 50,000 barrels per year of liquefied petroleum gas that was formerly being flared. The elimination of the flare also reduces CO2 emissions by 17,000 tons per year, plus tons per year reductions in NOx, CO, and VOCs. The waste heat is supplied directly to the absorption unit from the Unifiner effluent. The added cooling of that stream relieves a bottleneck formerly present due to restricted availability of cooling water. The 350oF Unifiner effluent is cooled to 260oF. The catalytic reformer vent gas is directly chilled to minus 25oF, and the FCC column overhead reflux is chilled by 25oF glycol. Notwithstanding a substantial cost overrun and schedule slippage, this project can now be considered a success: it is both profitable and highly beneficial to the environment. The capabilities of directly-integrated waste-heat powered ammonia absorption refrigeration and their benefits to the refining industry have been demonstrated.

  17. Power Recovery

    E-Print Network [OSTI]

    Murray, F.

    , will be the use of the ASTM Theoretical Steam Rate Tables. In addition, the author's experience regarding the minimum size for power recovery units that are economic in a Culf Coast plant will be presented. INTROD\\Jr.'rION When surveying an operation... will be discussed in detail. Each term in the equation will be considered in English units. Secondly, the use of Mollier diagrams to estimate the enthalphy change between the initial and final conditions will be considered. The last method, specific to steam...

  18. Yakama Power

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsingWhatY-12 recognized for ...BER/NERSCYakama Power May

  19. Fusion Power

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof EnergyFunding Opportunity fromFusion Links Fusion

  20. Advances in fuel management and on-line core monitoring

    SciTech Connect (OSTI)

    Stout, R.B.; Hansen, L.E.; Patten, T.W.

    1988-01-01T23:59:59.000Z

    Advanced Nuclear Fuels Corporation (ANF) has developed and implemented advanced core power distribution monitoring methods for BWRs and PWRs based on the three dimensional nodal simulator codes used for incore fuel management design and analysis. The use of these methods has resulted in a more accurate assessment of the core power distribution and corresponding increased operating margins. These increased margins allow for more economical fuel cycle designs. Since the initial application in 1982, ANF has made enhancements to the incore monitoring system. These enhancements have permitted more rapid analysis of local power changes, power distribution projections during ascent to full power and on-line statistical analysis of the incore detector signal. The on-line analysis implemented in BWRs has also been developed for application PWRs. In the future, reactors are expected to operate with longer fuel cycles, more aggressive low radial leakage loadings, load follow and use higher burnup fuel. These advances will require more burnable neutron absorbers and more sophisticated fuel designs. To accommodate these advances, the fuel management methodologies and measurement system will require improvements. The state-of-the-art methods provided by ANF provide incore monitoring systems compatible with these expected needs.

  1. Note: Characteristic beam parameter for the line electron gun

    SciTech Connect (OSTI)

    Iqbal, M. [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan) [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan); Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Islam, G. U. [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan)] [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan); Zhou, Z.; Chi, Y. [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)] [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

    2013-11-15T23:59:59.000Z

    We have optimized the beam parameters of line source electron gun using Stanford Linear Accelerator Centre electron beam trajectory program (EGUN), utilizing electrostatic focusing only. We measured minimum beam diameter as 0.5 mm that corresponds to power density of 68.9 kW/cm{sup 2} at 13.5 mm in the post-anode region which is more than two-fold (33 kW/cm{sup 2}), of the previously reported results. The gun was operated for the validation of the theoretical results and found in good agreement. The gun is now without any magnetic and electrostatic focusing thus much simpler and more powerful.

  2. Angular output of hollow, metal-lined, waveguide Raman sensors

    SciTech Connect (OSTI)

    Biedrzycki, Stephen; Buric, Michael P.; Falk, Joel; Woodruff, Steven D.

    2012-04-20T23:59:59.000Z

    Hollow, metal-lined waveguides used as gas sensors based on spontaneous Raman scattering are capable of large angular collection. The collection of light from a large solid angle implies the collection of a large number of waveguide modes. An accurate estimation of the propagation losses for these modes is required to predict the total collected Raman power. We report a theory/experimental comparison of the Raman power collected as a function of the solid angle and waveguide length. New theoretical observations are compared with previous theory appropriate only for low-order modes. A cutback experiment is demonstrated to verify the validity of either theory. The angular distribution of Raman light is measured using aluminum and silver-lined waveguides of varying lengths.

  3. Power management system

    DOE Patents [OSTI]

    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

    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.

  4. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    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

  5. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    E-Print Network [OSTI]

    Cairns, Elton J.

    2012-01-01T23:59:59.000Z

    electric power generating plant, and the distributionrequired on the power-generating plant and not on the vehi-in either power-generating plants or combustion engines,

  6. Southwestern Power Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Courses Instructors NERC Continuing Education Power Operations Training Center You'll find the "Power" of learning at Southwestern's Power Operations Training Center (POTC). POTC's...

  7. POWER PURCHASE AGREEMENT DELMARVA POWER & LIGHT COMPANY

    E-Print Network [OSTI]

    Firestone, Jeremy

    POWER PURCHASE AGREEMENT between DELMARVA POWER & LIGHT COMPANY ("Buyer") and BLUEWATER WIND 3.5 Energy Forecasts, Scheduling and Balancing.......................................... 39 3

  8. Florida Electric Transmission Line Siting Act (Florida)

    Broader source: Energy.gov [DOE]

    The Transmission Line Siting Act (TLSA) is the state’s centralized process for licensing electrical transmission lines which; (a) are 230 kV or larger; (b) cross a county line; and, (c) are 15...

  9. Beam line design for synchrotron spectroscopy in the VUV

    SciTech Connect (OSTI)

    Howells, M R

    1980-01-01T23:59:59.000Z

    The character of the radiation source provided by an electron storage ring is briefly reviewed from the point of view of utilization for VUV spectroscopy. The design of beam line components is then considered with special reference to the problems of contamination of optical surfaces and vacuum protection. The issues involved in designing mirrors for use with storage rings are considered with emphasis on the questions of power dissipation, image quality and materials selection.

  10. Critical Node Identification of Smart Power System Using Complex Network Framework Based

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    transmission networks, in which a DC power flow model and overloading of lines is embedded into the traditional or node removal can cause serious impact on normal system operation. Removal of transmission lines from characteristics and complex network theory together. Particularly, electric power networks are quite different

  11. Reducing Delay and Power Consumption of the Wakeup Logic through Instruction Packing and Tag Memoization

    E-Print Network [OSTI]

    Ponomarev, Dmitry V.

    the energy dissipated in driving the tag lines. Our first approach reduces the effective length of the tag approach avoids the power dissipated in driving the tag lines by not driving the higher order bits the delay and power dissipation standpoints. The delay and energy requirement of driving the result tags

  12. A Sparse Representation Approach to Online Estimation of Power System Distribution Factors

    E-Print Network [OSTI]

    Liberzon, Daniel

    , constructed from the transmission network, line parameters, and historical and forecasted power generation.g., a transmission line or generator), a condition known as N-1 security [2]. Using an up-to- date system model1 A Sparse Representation Approach to Online Estimation of Power System Distribution Factors Yu

  13. False Data Injection Attacks with Incomplete Information Against Smart Power Grids

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    that if an adversary has complete knowledge on the power grid topology and transmission-line admittance values, he can Injection Attack, Smart Grid Security, Incomplete Information, Transmission Line Admittance Uncer- tainty- abilities in power infrastructures if they are not accompanied with appropriate security enforcements

  14. Contingency Analysis of Cascading Line Outage Events

    SciTech Connect (OSTI)

    Thomas L Baldwin; Magdy S Tawfik; Miles McQueen

    2011-03-01T23:59:59.000Z

    As the US power systems continue to increase in size and complexity, including the growth of smart grids, larger blackouts due to cascading outages become more likely. Grid congestion is often associated with a cascading collapse leading to a major blackout. Such a collapse is characterized by a self-sustaining sequence of line outages followed by a topology breakup of the network. This paper addresses the implementation and testing of a process for N-k contingency analysis and sequential cascading outage simulation in order to identify potential cascading modes. A modeling approach described in this paper offers a unique capability to identify initiating events that may lead to cascading outages. It predicts the development of cascading events by identifying and visualizing potential cascading tiers. The proposed approach was implemented using a 328-bus simplified SERC power system network. The results of the study indicate that initiating events and possible cascading chains may be identified, ranked and visualized. This approach may be used to improve the reliability of a transmission grid and reduce its vulnerability to cascading outages.

  15. Power oscillator

    DOE Patents [OSTI]

    Gitsevich, Aleksandr (Montgomery Village, MD)

    2001-01-01T23:59:59.000Z

    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.

  16. Energy Management for an Onboard Storage System Based on Multi-Objective Optimization

    E-Print Network [OSTI]

    Paderborn, Universität

    Energy Management for an Onboard Storage System Based on Multi-Objective Optimization Tobias Knoke an onboard energy storage, the overhead line peak power and energy consumption can be reduced. The storage. This can be achieved by using an onboard energy storage, which recuperates the power during the braking

  17. CX-010406: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Davis Dam to Kingman Tap 69 Kilovolt Transmission Line, Overhead Optical Power Ground Wire Installation CX(s) Applied: B4.7 Date: 05/16/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

  18. What can emission lines tell us?

    E-Print Network [OSTI]

    G. Stasinska

    2007-04-03T23:59:59.000Z

    1 Generalities 2 Empirical diagnostics based on emission lines 3 Photoionization modelling 4 Pending questions 5 Appendix: Lists of useful lines and how to deal with them

  19. MA 223 Final Exam Practice Problems 1. Find the slope of the line ...

    E-Print Network [OSTI]

    becker

    2003-09-18T23:59:59.000Z

    consists of a fixed overhead of $8000 plus production costs of $30 per table. How many tables must the manufacturer sell to break even? A. 80 B. 267 C. 200 D.

  20. Dumbarton Express Line DB heading to Stanford Oval. AC Transit Line U on Palm Drive.

    E-Print Network [OSTI]

    Dumbarton Express Line DB heading to Stanford Oval. AC Transit Line U on Palm Drive. Photo: Karl Nielsen Photo: Dong Wang Schedules: AC Transit Line U Dumbarton Express Line DB Connections with BART Transit Line U Line U provides express service between Stanford and the Fremont BART station. Other East

  1. Sixth Northwest Conservation and Electric Power Plan Chapter 7: Transmission

    E-Print Network [OSTI]

    Sixth Northwest Conservation and Electric Power Plan Chapter 7: Transmission Summary of Key, both in operating the existing system and in planning for new major transmission lines. Since then transmission system is an integral part of the regional power system. It functions roughly like the highway

  2. Braess' Paradox in a simple electric power system

    E-Print Network [OSTI]

    Blumsack, Seth

    at bus i; Fij = Real power flow between buses i and j; i = Locational marginal price at bus i in $/MW lines in the system are upgraded. In these systems, locational prices (as currently used electric power network. The load at bus 4 is assumed to have a totally price- inelastic demand of 100 MW

  3. Wojciech.Wiechowski@wtwps.com POWER SYSTEM TECHNICAL PERFORMANCE ISSUES

    E-Print Network [OSTI]

    Bak, Claus Leth

    Wojciech.Wiechowski@wtwps.com POWER SYSTEM TECHNICAL PERFORMANCE ISSUES RELATED TO THE APPLICATION of work of Cigre Working Group C4.502 "Power system technical performance issues related underground transmission project are identified. Cable line modeling and model verification techniques

  4. EECE 493 -Winter 2012 Introduction to Power Electronics

    E-Print Network [OSTI]

    Pulfrey, David L.

    DC-DC Converter Analysis (Ch. 2) Sept 17-19: the DC-Transformer Model and Component Losses (Ch. 3, 4EECE 493 - Winter 2012 Introduction to Power Electronics Instructor: Nathan Ozog Office: BC Hydro) Phone: 604 528 2639 (BC Hydro Direct Line) TA: Soroush Amini Sajjad Zadkhast Office: Power Lab - 3rd

  5. EIS-0294: Sutter Power Project, Sutter County, California

    Broader source: Energy.gov [DOE]

    This EIS analyzes Western Area Power Administration's (Western) decision to support Calpine Corporation (Calpine) to construct an electric generating facility and associated 230-kilovolt (kV) transmission line, approximately 3.5 miles in length, known as the Sutter Power Plant (SPP).

  6. Quasistellar Objects: Intervening Absorption Lines

    E-Print Network [OSTI]

    Jane C. Charlton; Christopher W. Churchill

    2000-05-31T23:59:59.000Z

    We briefly review, at a level appropriate for graduate students and non-specialists, the field of quasar absorption lines (QALs). Emphasis is on the intervening absorbers. We present the anatomy of a quasar spectrum due to various classes of intervening absorption systems, and a brief historical review of each absorber class (Lyman-alpha forest and Lyman limit systems, and metal-line and damped Lyman-alpha absorbers). We also provide several heuristic examples on how the physical properties of both the intergalactic medium and the gaseous environments associated with earlier epoch galaxies can be inferred from QALs. The evolution of these environments from z=4 are discussed.

  7. Wind Power Plant Voltage Stability Evaluation: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Zhang, Y. C.

    2014-09-01T23:59:59.000Z

    Voltage stability refers to the ability of a power system to maintain steady voltages at all buses in the system after being subjected to a disturbance from a given initial operating condition. Voltage stability depends on a power system's ability to maintain and/or restore equilibrium between load demand and supply. Instability that may result occurs in the form of a progressive fall or rise of voltages of some buses. Possible outcomes of voltage instability are the loss of load in an area or tripped transmission lines and other elements by their protective systems, which may lead to cascading outages. The loss of synchronism of some generators may result from these outages or from operating conditions that violate a synchronous generator's field current limit, or in the case of variable speed wind turbine generator, the current limits of power switches. This paper investigates the impact of wind power plants on power system voltage stability by using synchrophasor measurements.

  8. The Column Density Distribution of the Lyman-Alpha Forest: A Measure of Small Scale Power

    E-Print Network [OSTI]

    Lam Hui; Nickolay Y. Gnedin; Yu Zhang

    1997-02-19T23:59:59.000Z

    Absorption lines in the Lyman-alpha forest can be thought of as peaks in neutral hydrogen density along lines of sight. The column density distribution (the number density of absorption lines as a function of column density) is then a statistic of density peaks, which contains information about the underlying power spectrum. In particular, we show that the slope of the distribution provides a measure of power on scales smaller than those probed by studies of present-day large scale structure.

  9. An adaptive algorithm for the detection of high impedance faults on power distribution systems

    E-Print Network [OSTI]

    McCall, Kurt Eric

    1990-01-01T23:59:59.000Z

    of Science in Electrical Engineering. The objective is to design an adaptive algorithm that will automatically detect high impedance faults on a utility power distribution line or in other power systems. The algorithm is efficient enough to perform... it is impossible to have personnel continuously monitor many lines to detect these situations, an automated solution is needed. A fault detection device will have to be able to recognize abnormal situations by monitoring the electrical condition of the lines...

  10. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 20, NO. 5, SEPTEMBER 2005 1093 System Identification of Power Converters

    E-Print Network [OSTI]

    IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 20, NO. 5, SEPTEMBER 2005 1093 System Identification converters, on-line system identification can be used to assess the system dynamic responses and stability margins. This paper presents a modified correlation method for system identification of power converters

  11. Marys Lake 69/115-kV transmission line upgrade and substation expansion projects

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    Western Area Power Administration (Western) and the Platte River Power Authority (Platte River) propose to upgrade portions of the existing electric transmission and substation system that serves the Town of Estes Park, Colorado. The existing transmission lines between the Estes Power Plant Switchyard and the Marys Lake Substation include a 115,000 volt (115-kV) line and 69,000 volt (69-kV) line. Approximately one mile is a double-circuit 115/69-kV line on steel lattice structures, and approximately two miles consists of separate single-circuit 115-kV and a 69-kV lines, constructed on wood H-Frame structures. Both lines were constructed in 1951 by the US Bureau of Reclamation. The existing transmission lines are on rights-of-way (ROW) that vary from 75 feet to 120 feet and are owned by Western. There are 48 landowners adjacent to the existing ROW. All of the houses were built adjacent to the existing ROW after the transmission lines were constructed. Upgrading the existing 69-kV transmission line between the Marys Lake Substation and the Estes Power Plant Switchyard to 115-kV and expanding the Marys Lake Substation was identified as the most effective way in which to improve electric service to Estes Park. The primary purpose and need of the proposed project is to improve the reliability of electric service to the Town of Estes Park. Lack of reliability has been a historical concern, and reliability will always be less than desired until physical improvements are made to the electrical facilities serving Estes Park.

  12. INTEGRATED VERTICAL AND OVERHEAD DECONTAMINATION SYSTEM

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.

    1999-01-01T23:59:59.000Z

    This report summarizes the activities performed during FY98 and describes the planned activities for FY99. Accomplishments for FY98 include identifying and selecting decontamination, the screening of potential characterization technologies, development of minimum performance factors for the decontamination technology, and development and identification of Applicable, Relevant and Appropriate Regulations (ARARs).

  13. Chapter 13 - OVERHEAD AND GANTRY CRANES

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C oCNMSStaffCeriumfor the 20122-1 November

  14. Control and Optimization Meet the Smart Power Grid - Scheduling of Power Demands for Optimal Energy Management

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    2010-01-01T23:59:59.000Z

    The smart power grid aims at harnessing information and communication technologies to enhance reliability and enforce sensible use of energy. Its realization is geared by the fundamental goal of effective management of demand load. In this work, we envision a scenario with real-time communication between the operator and consumers. The grid operator controller receives requests for power demands from consumers, with different power requirement, duration, and a deadline by which it is to be completed. The objective is to devise a power demand task scheduling policy that minimizes the grid operational cost over a time horizon. The operational cost is a convex function of instantaneous power consumption and reflects the fact that each additional unit of power needed to serve demands is more expensive as demand load increases.First, we study the off-line demand scheduling problem, where parameters are fixed and known. Next, we devise a stochastic model for the case when demands are generated continually and sched...

  15. Dynamic Power Flow Controller: Compact Dynamic Phase Angle Regulators for Transmission Power Routing

    SciTech Connect (OSTI)

    None

    2012-01-03T23:59:59.000Z

    GENI Project: Varentec is developing compact, low-cost transmission power controllers with fractional power rating for controlling power flow on transmission networks. The technology will enhance grid operations through improved use of current assets and by dramatically reducing the number of transmission lines that have to be built to meet increasing contributions of renewable energy sources like wind and solar. The proposed transmission controllers would allow for the dynamic control of voltage and power flow, improving the grid’s ability to dispatch power in real time to the places where it is most needed. The controllers would work as fail-safe devices whereby the grid would be restored to its present operating state in the event of a controller malfunction instead of failing outright. The ability to affordably and dynamically control power flow with adequate fail-safe switchgear could open up new competitive energy markets which are not possible under the current regulatory structure and technology base.

  16. 950 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 46, NO. 8, AUGUST 1999 Dynamic and Short-Circuit Power of CMOS

    E-Print Network [OSTI]

    Ismail, Yehea

    . 8, AUGUST 1999 Dynamic and Short-Circuit Power of CMOS Gates Driving Lossless Transmission Lines is shown to be less than 7% for CMOS gates driving LC transmission lines where the line is matched and short-circuit power consumption of a complementary metal­oxide­semidconductor (CMOS) gate driving

  17. Paper accepted for presentation at 2003 IEEE Bologna PowerTech Conference, June 23-26, Bologna, Italy Wind Power Forecasting using Fuzzy Neural Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Italy Wind Power Forecasting using Fuzzy Neural Networks Enhanced with On-line Prediction Risk) as input, to predict the power production of wind park8 48 hours ahead. The prediction system integrates of the numerical weather predictions. Index Term-Wind power, short-term forecasting, numerical weather predictions

  18. Coiled transmission line pulse generators

    DOE Patents [OSTI]

    McDonald, Kenneth Fox (Columbia, MO)

    2010-11-09T23:59:59.000Z

    Methods and apparatus are provided for fabricating and constructing solid dielectric "Coiled Transmission Line" pulse generators in radial or axial coiled geometries. The pour and cure fabrication process enables a wide variety of geometries and form factors. The volume between the conductors is filled with liquid blends of monomers, polymers, oligomers, and/or cross-linkers and dielectric powders; and then cured to form high field strength and high dielectric constant solid dielectric transmission lines that intrinsically produce ideal rectangular high voltage pulses when charged and switched into matched impedance loads. Voltage levels may be increased by Marx and/or Blumlein principles incorporating spark gap or, preferentially, solid state switches (such as optically triggered thyristors) which produce reliable, high repetition rate operation. Moreover, these Marxed pulse generators can be DC charged and do not require additional pulse forming circuitry, pulse forming lines, transformers, or an a high voltage spark gap output switch. The apparatus accommodates a wide range of voltages, impedances, pulse durations, pulse repetition rates, and duty cycles. The resulting mobile or flight platform friendly cylindrical geometric configuration is much more compact, light-weight, and robust than conventional linear geometries, or pulse generators constructed from conventional components. Installing additional circuitry may accommodate optional pulse shape improvements. The Coiled Transmission Lines can also be connected in parallel to decrease the impedance, or in series to increase the pulse length.

  19. Camera Calibration Using Line Correspondences

    E-Print Network [OSTI]

    Hartley, Richard

    Camera Calibration Using Line Correspondences Richard I. Hartley G.E. CRD, Schenectady, NY, 12301. The three cameras may have different unknown calibrations, and the essential matrices corresponding to each, camera calibration and scene reconstruction. In the case where all the three cameras are assumed to have

  20. EA-1951: Midway-Moxee Rebuild and Midway-Grandview Upgrade Transmission Line, Benton and Yakima Counties, Washington

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration is preparing an EA to assess the potential environmental impacts of the proposed rebuild of the 34-mile Midway-Moxee transmission line in Benton and Yakima Counties, Washington.

  1. Dynamic Line Rating Oncor Electric Delivery Smart Grid Program

    SciTech Connect (OSTI)

    Johnson, Justin; Smith, Cale; Young, Mike; Donohoo, Ken; Owen, Ross; Clark, Eddit; Espejo, Raul; Aivaliotis, Sandy; Stelmak, Ron; Mohr, Ron; Barba, Cristian; Gonzalez, Guillermo; Malkin, Stuart; Dimitrova, Vessela; Ragsdale, Gary; Mitchem, Sean; Jeirath, Nakul; Loomis, Joe; Trevino, Gerardo; Syracuse, Steve; Hurst, Neil; Mereness, Matt; Johnson, Chad; Bivens, Carrie

    2013-05-04T23:59:59.000Z

    Electric transmission lines are the lifeline of the electric utility industry, delivering its product from source to consumer. This critical infrastructure is often constrained such that there is inadequate capacity on existing transmission lines to efficiently deliver the power to meet demand in certain areas or to transport energy from high-generation areas to high-consumption regions. When this happens, the cost of the energy rises; more costly sources of power are used to meet the demand or the system operates less reliably. These economic impacts are known as congestion, and they can amount to substantial dollars for any time frame of reference: hour, day or year. There are several solutions to the transmission constraint problem, including: construction of new generation, construction of new transmission facilities, rebuilding and reconductoring of existing transmission assets, and Dynamic Line Rating (DLR). All of these options except DLR are capital intensive, have long lead times and often experience strong public and regulatory opposition. The Smart Grid Demonstration Program (SGDP) project co-funded by the Department of Energy (DOE) and Oncor Electric Delivery Company developed and deployed the most extensive and advanced DLR installation to demonstrate that DLR technology is capable of resolving many transmission capacity constraint problems with a system that is reliable, safe and very cost competitive. The SGDP DLR deployment is the first application of DLR technology to feed transmission line real-time dynamic ratings directly into the system operation’s State Estimator and load dispatch program, which optimizes the matching of generation with load demand on a security, reliability and economic basis. The integrated Dynamic Line Rating (iDLR)1 collects transmission line parameters at remote locations on the lines, calculates the real-time line rating based on the equivalent conductor temperature, ambient temperature and influence of wind and solar radiation on the stringing section, transmits the data to the Transmission Energy Management System, validates its integrity and passes it on to Oncor and ERCOT (Electric Reliability Council of Texas) respective system operations. The iDLR system is automatic and transparent to ERCOT System Operations, i.e., it operates in parallel with all other system status telemetry collected through Supervisory Control and Data Acquisition (SCADA) employed across the company.

  2. Power transaction issues in deregulated power systems

    E-Print Network [OSTI]

    Roycourt, Henrik

    2000-01-01T23:59:59.000Z

    of each generator to the individual transmission lines flows. The method's implementation is described in detail and numerical examples are included for its illustration....

  3. EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project, Yakima, Grant, Benton and Kittitas Counties, Washington

    Broader source: Energy.gov [DOE]

    The Bureau of Land Management is preparing, with DOE’s Bonneville Power Administration (BPA) as a cooperating agency, an EIS that evaluates the potential environmental impacts of a proposal to construct a 60- to 67-mile long 230-kV transmission line. BPA’s proposed action is to interconnect the transmission line to an existing BPA substation.

  4. Investigation of a high impedance magnetically insulated transmission line oscillator with hollow load

    SciTech Connect (OSTI)

    Zhou Heng; Shu Ting; Li Zhiqiang [College of Opto-electric Science and Engineering, National University of Defense Technology, Hunan 410073 (China)

    2012-09-15T23:59:59.000Z

    A novel high-impedance magnetically insulated transmission line oscillator (MILO) with greatly restrained power deposition on the anode has been investigated. Methods to increase the MILO impedance and decrease the anode current are discussed. A MILO with impedance of 30 {Omega} and power conversion efficiency of 25% is presented by particle-in-cell simulations. Compared with the previous MILO in our lab, the anode current of the proposed MILO is reduced about 50%, the power conversion efficiency doubles, and the power deposition on anode is reduced nearly one half. Furthermore, considerations for reducing the power deposition on load have also been carried out in MILO design, and the load current is reduced to 4.6 kA, only 17% of the total anode current. Finally, a hollow load was introduced to reduce the power deposition density on the load, without decreasing the power conversion efficiency.

  5. A network approach for power grid robustness against cascading failures

    E-Print Network [OSTI]

    Wang, Xiangrong; Kooij, Robert E; Van Mieghem, Piet

    2015-01-01T23:59:59.000Z

    Cascading failures are one of the main reasons for blackouts in electrical power grids. Stable power supply requires a robust design of the power grid topology. Currently, the impact of the grid structure on the grid robustness is mainly assessed by purely topological metrics, that fail to capture the fundamental properties of the electrical power grids such as power flow allocation according to Kirchhoff's laws. This paper deploys the effective graph resistance as a metric to relate the topology of a grid to its robustness against cascading failures. Specifically, the effective graph resistance is deployed as a metric for network expansions (by means of transmission line additions) of an existing power grid. Four strategies based on network properties are investigated to optimize the effective graph resistance, accordingly to improve the robustness, of a given power grid at a low computational complexity. Experimental results suggest the existence of Braess's paradox in power grids: bringing an additional li...

  6. Power and polarization monitor development for high power millimeter-wave

    SciTech Connect (OSTI)

    Makino, R., E-mail: makino.ryohhei@ms.nifs.ac.jp; Kobayashi, K. [Department of Energy Engineering and Science, Nagoya University, Nagoya 464-8603 (Japan); Kubo, S. [Department of Energy Engineering and Science, Nagoya University, Nagoya 464-8603 (Japan); National Institute for Fusion Science, Toki 509-5292 (Japan); Kobayashi, S.; Shimozuma, T.; Yoshimura, Y.; Igami, H.; Takahashi, H.; Mutoh, T. [National Institute for Fusion Science, Toki 509-5292 (Japan)

    2014-11-15T23:59:59.000Z

    A new type monitor of power and polarization states of millimeter-waves has been developed to be installed at a miter-bend, which is a part of transmission lines of millimeter-waves, for electron cyclotron resonance heating on the Large Helical Device. The monitor measures amplitudes and phase difference of the electric field of the two orthogonal polarizations which are needed for calculation of the power and polarization states of waves. The power and phase differences of two orthogonal polarizations were successfully detected simultaneously.

  7. The MICE Muon Beam Line

    SciTech Connect (OSTI)

    Apollonio, Marco [High Energy Physics Group, Department of Physics, Imperial College London SW7 2AZ (United Kingdom)

    2011-10-06T23:59:59.000Z

    In the Muon Ionization Cooling Experiment (MICE) at RAL, muons are produced and transported in a dedicated beam line connecting the production point (target) to the cooling channel. We discuss the main features of the beamline, meant to provide muons with momenta between 140 MeV/c and 240 MeV/c and emittances up to 10 mm rad, which is accomplished by means of a diffuser. Matching procedures to the MICE cooling channel are also described. In summer 2010 we performed an intense data taking campaign to finalize the calibration of the MICE Particle Identification (PID) detectors and the understanding of the beam line, which completes the STEPI phase of MICE. We highlight the main results from these data.

  8. Fort Peck-Havre transmission line project, Hill, Blaine, Phillips, Valley and McCone Counties, Montana

    SciTech Connect (OSTI)

    Not Available

    1982-09-01T23:59:59.000Z

    Construction and operation of a 180-mile, 230-kilovlt (kV) transmission line between Fort Peck and Havre, Montana is proposed to provide a replacement for the 161-kV line that currently runs between the two cities. The new line would be carried on woodpole, H-frame structures. The existing 161-kV line would be removed, and the Richardson Coulee Substation would be relocated. Intermediate facilities to be improved would include the Fort Peck Switchyard and the Richardson Coulee, Malta, Harlem, and Havre substations.Construction of the line would commence in August 1983, and operation would commence in January 1986. The expected life of the transmission system would be 100 years. Estimated cost of the project, in 1983 dollars, is $36.1 million. The project would upgrade an essential element of the Western Area Power Administration's electric power system and the Montana Power Company's interconnected transmission network. Continued electric service reliability would be improved, and safety conditions affecting personnel who maintain the line would be enhanced. Additional transmission capacity would be provided to accommodate future load growth, precluding the need for multiple transmission lines. The line would eleminate seven acres of productive land and create physical conflicts with present and future agricultural activities. The line would traverse areas characterized by concentrations of archaeological resources and cultural resources of importance to native Americans. Transmission structures could mar scenery in areas with historically significant architecture and would interfere with waterfowl.

  9. Petawatt pulsed-power accelerator

    DOE Patents [OSTI]

    Stygar, William A. (Albuquerque, NM); Cuneo, Michael E. (Albuquerque, NM); Headley, Daniel I. (Albuquerque, NM); Ives, Harry C. (Albuquerque, NM); Ives, legal representative; Berry Cottrell (Albuquerque, NM); Leeper, Ramon J. (Albuquerque, NM); Mazarakis, Michael G. (Albuquerque, NM); Olson, Craig L. (Albuquerque, NM); Porter, John L. (Sandia Park, NM); Wagoner; Tim C. (Albuquerque, NM)

    2010-03-16T23:59:59.000Z

    A petawatt pulsed-power accelerator can be driven by various types of electrical-pulse generators, including conventional Marx generators and linear-transformer drivers. The pulsed-power accelerator can be configured to drive an electrical load from one- or two-sides. Various types of loads can be driven; for example, the accelerator can be used to drive a high-current z-pinch load. When driven by slow-pulse generators (e.g., conventional Marx generators), the accelerator comprises an oil section comprising at least one pulse-generator level having a plurality of pulse generators; a water section comprising a pulse-forming circuit for each pulse generator and a level of monolithic triplate radial-transmission-line impedance transformers, that have variable impedance profiles, for each pulse-generator level; and a vacuum section comprising triplate magnetically insulated transmission lines that feed an electrical load. When driven by LTD generators or other fast-pulse generators, the need for the pulse-forming circuits in the water section can be eliminated.

  10. EIS-0317-S1: Kangley-Echo Lake Transmission Line Project Final Environmental Impact Statement

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration (BPA) has completed a supplemental draft Environmental Impact Statement (SDEIS) for the proposed Kangley-Echo Lake Transmission Line Project. The proposed line in central King County, Washington is needed to accommodate electrical growth and reliability concerns in the Puget Sound area. The SDEIS analyzes four additional transmission alternatives not analyzed in detail in the draft Environmental Impact Statement (DEIS) issued in June 2001, and a number of non-transmission alternatives.

  11. EA-1981: Bonneville-Hood River Transmission Line Rebuild, Multnomah and Hood River Counties, Oregon

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration (BPA) is preparing an EA to assess potential environmental impacts of a proposal to rebuild its 24-mile long, 115 kilovolt Bonneville-Hood River transmission line. The existing line runs between the Bonneville Powerhouse at Bonneville Dam in Multnomah County, Oregon, and BPA's existing Hood River Substation in Hood River County, Oregon. The project would include replacing structures and conductor wires, improving access roads, and constructing new access roads or trails where needed.

  12. In-line thermoelectric module

    DOE Patents [OSTI]

    Pento, Robert (Algonquin, IL); Marks, James E. (Glenville, NY); Staffanson, Clifford D. (S. Glens Falls, NY)

    2000-01-01T23:59:59.000Z

    A thermoelectric module with a plurality of electricity generating units each having a first end and a second end, the units being arranged first end to second end along an in-line axis. Each unit includes first and second elements each made of a thermoelectric material, an electrically conductive hot member arranged to heat one side of the first element, and an electrically conductive cold member arranged to cool another side of the first element and to cool one side of the second element. The hot member, the first element, the cold member and the second element are supported in a fixture, are electrically connected respectively to provide an electricity generating unit, and are arranged respectively in positions along the in-line axis. The individual components of each generating unit and the respective generating units are clamped in their in-line positions by a loading bolt at one end of the fixture and a stop wall at the other end of the fixture. The hot members may have a T-shape and the cold members an hourglass shape to facilitate heat transfer. The direction of heat transfer through the hot members may be perpendicular to the direction of heat transfer through the cold members, and both of these heat transfer directions may be perpendicular to the direction of current flow through the module.

  13. Wild Horse 69-kV transmission line environmental assessment

    SciTech Connect (OSTI)

    NONE

    1996-12-01T23:59:59.000Z

    Hill County Electric Cooperative Inc. (Hill County) proposes to construct and operate a 69-kV transmission line from its North Gildford Substation in Montana north to the Canadian border. A vicinity project area map is enclosed as a figure. TransCanada Power Corporation (TCP), a Canadian power-marketing company, will own and construct the connecting 69-kV line from the international border to Express Pipeline`s pump station at Wild Horse, Alberta. This Environmental Assessment is prepared for the Department of Energy (DOE) as lead federal agency to comply with the requirements of the National Environmental Policy Act (NEPA), as part of DOE`s review and approval process of the applications filed by Hill County for a DOE Presidential Permit and License to Export Electricity to a foreign country. The purpose of the proposed line is to supply electric energy to a crude oil pump station in Canada, owned by Express Pipeline Ltd. (Express). The pipeline would transport Canadian-produced oil from Hardisty, Alberta, Canada, to Caster, Wyoming. The Express Pipeline is scheduled to be constructed in 1996--97 and will supply crude oil to refineries in Wyoming and the midwest.

  14. LIFE Power Plant Fusion Power Associates

    E-Print Network [OSTI]

    LIFE Power Plant Fusion Power Associates December 14, 2011 Mike Dunne LLNL #12;NIf-1111-23714.ppt LIFE power plant 2 #12;LIFE delivery timescale NIf-1111-23714.ppt 3 #12;Timely delivery is enabled dpa) § Removes ion threat and mitigates x-ray threat ­ allows simple steel piping § No need

  15. Deriving Particle Distributions from In-Line Fraunhofer Holographic Data

    SciTech Connect (OSTI)

    C.A. Ciarcia; D.E. Johnson; D.S. Sorenson; R.H. Frederickson, A.D. Delanoy; R.M. Malone; T.W. Tunnel

    1997-08-01T23:59:59.000Z

    Holographic data are acquired during hydrodynamic experiments at the Pegasus Pulsed Power Facility at the Los Alamos National Laboratory. These experiments produce a fine spray of fast-moving particles. Snapshots of the spray are captured using in-line Fraunhofer holographic techniques. Roughly one cubic centimeter is recorded by the hologram. Minimum detectable particle size in the data extends down to 2 microns. In a holography reconstruction system, a laser illuminates the hologram as it rests in a three-axis actuator, recreating the snapshot of the experiment. A computer guides the actuators through an orderly sequence programmed by the user. At selected intervals, slices of this volume are captured and digitized with a CCD camera. Intermittent on-line processing of the image data and computer control of the camera functions optimizes statistics of the acquired image data for off-line processing. Tens of thousands of individual data frames (30 to 40 gigabytes of data) are required to recreate a digital representation of the snapshot. Throughput of the reduction system is 550 megabytes per hour (MB/hr). Objects and associated features from the data are subsequently extracted during off-line processing. Discrimination and correlation tests reject noise, eliminate multiple counting of particles, and build an error model to estimate performance. Objects surviving these tests are classified as particles. The particle distributions are derived from the data base formed by these particles, their locations and features. Throughput of the off-line processing exceeds 500 MB/hr. This paper describes the reduction system, outlines the off-line processing procedure, summarizes the discrimination and correlation tests, and reports numerical results for a sample data set.

  16. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    are many solar photovoltaic power plants internationally andUSA, Blythe, CA Solar electric power plant, Blythe USA, SanTX Blue Wing solar electric power plant USA, Jacksonville,

  17. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    of the electrical power output to the solar power input), aSolar Energy Calculator using Google Maps 23 Table 1.24: PV System Power Production Average Daily Irradiance (kWh/m2) Instillation Efficiency Labeled Efficiency Output

  18. A stochastic framework for uncertainty analysis in electric power transmission systems with wind generation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of generating units, the transfer of electric power over networks of transmission lines and, finally1 A stochastic framework for uncertainty analysis in electric power transmission systems with wind an electric transmission network with wind power generation and their impact on its reliability. A stochastic

  19. Edinburgh Research Explorer Local solutions of the optimal power flow problem

    E-Print Network [OSTI]

    Millar, Andrew J.

    law (KVL), which describes the flow of power in transmission lines, and is a nonlinear function of bus is to find a steady state operating point that minimizes the cost of electric power generation whileEdinburgh Research Explorer Local solutions of the optimal power flow problem Citation

  20. A Dual Algorithm for the Short Term Power Production Planning with Network

    E-Print Network [OSTI]

    is satisfied by means of a system of power generator units and transmission lines. The systematic coordination which can be of different kinds, connected by a power transmission network. These need to be scheduled de Ingenier'ia, Montevideo, Uruguay 1 #12; 1 Introduction The demand of electric power in a country

  1. UNCERTAINTY-DRIVEN ADAPTIVE ESTIMATION WITH APPLICATIONS IN ELECTRICAL POWER SYSTEMS

    E-Print Network [OSTI]

    Welch, Greg

    UNCERTAINTY-DRIVEN ADAPTIVE ESTIMATION WITH APPLICATIONS IN ELECTRICAL POWER SYSTEMS Jinghe Zhang in Electrical Power Systems (Under the direction of Gregory F. Welch) From electrical power systems areas: 1. Grid Sensor Placement. I present a method that combines off-line steady-state uncer- tainty

  2. Example G Cost of construction of nuclear power plants Description of data

    E-Print Network [OSTI]

    Reid, Nancy

    Example G Cost of construction of nuclear power plants Description of data Table G.1 gives data) power plants constructed in USA. It is required to predict the capital cost involved in the construction of further LWR power plants. The notation used in Table G.1 is explained in Table G.2. The final 6 lines

  3. Correlated Failures of Power Systems: The Analysis of the Nordic Grid

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Correlated Failures of Power Systems: The Analysis of the Nordic Grid M. Andreasson, S. Amin, G the effects of correlations between failures of power lines on the total system load shed. The total system on the sampling accuracy. This framework has been applied to a 470 bus model of the Nordic power system

  4. A Service-Oriented Architecture for Electric Power Transmission System Asset Management

    E-Print Network [OSTI]

    Honavar, Vasant

    A Service-Oriented Architecture for Electric Power Transmission System Asset Management Jyotishman,tua,honavar,jdm}@iastate.edu Abstract. In electric power transmission systems, the assets include transmis- sion lines, transformers, power plants and support structures. Maintaining these assets to reliably deliver electric energy at low

  5. ACEEE International Journal on Electrical and Power Engineering, Vol. 1, No. 1, Jan 2010 2010 ACEEE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ACEEE DOI: 01.ijepe.01.01.03 Security Constrained UCP with Operational and Power Flow Constraints S An algorithm to solve security constrained unit commitment problem (UCP) with both operational and power flow model repeated optimal power flow for the satisfactory unit combinations for every line removal under

  6. Power System Probabilistic and Security Analysis on Commodity High Performance Computing Systems

    E-Print Network [OSTI]

    Franchetti, Franz

    power system infrastructures also requires merging of offline security analyses into on- line operationPower System Probabilistic and Security Analysis on Commodity High Performance Computing Systems tools for power system probabilistic and security analysis: 1) a high performance Monte Carlo simulation

  7. A nonlinear robust HVDC control for a parallel AC/DC power system

    E-Print Network [OSTI]

    Qu, Zhihua

    A nonlinear robust HVDC control for a parallel AC/DC power system Hongzhi Cai a , Zhihua Qu b. Keywords: Robust control; HVDC; Power system; Stability; Lyapunov method 1. Introduction It has been recognized that, through an HVDC transmission line, fast electronic control can be applied on the DC power

  8. Solar Power Forecasting at UC San Diego Jan Kleissl, Dept of Mechanical & Aerospace Engineering, UCSD

    E-Print Network [OSTI]

    Fainman, Yeshaiahu

    show 2 cloud layers. Vaisala Fig. 4: Observed solar power output (black line) and simulation (Fig. 4). Tier 3: Power output forecast As cloud related solar radiation reductions are observed algorithm to determine actual expected solar power output at each PV array over the hour ahead. #12;

  9. ACEEE Int. J. on Electrical and Power Engineering, Vol. 02, No. 02,August 2011 DOI:01.IJEPE.02.02.15

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Microprocessor based distance relays have been broadly applied to transmission lines protection. The calculation faults, power system protection, fault transients, multiresolution analysis I. INTRODUCTION Transmission lines exposed to various faults are designed with distance protection scheme. The main principle

  10. Nuclear power plant status diagnostics using artificial neural networks

    SciTech Connect (OSTI)

    Bartlett, E.B. [Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Mechanical Engineering] [Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Mechanical Engineering; Uhrig, R.E. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering] [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering

    1991-12-31T23:59:59.000Z

    In this work, the nuclear power plant operating status recognition issue is investigated using artificial neural networks (ANNs). The objective is to train an ANN to classify nuclear power plant accident conditions and to assess the potential of future work in the area of plant diagnostics with ANNS. To this end, an ANN was trained to recognize normal operating conditions as well as potentially unsafe conditions based on nuclear power plant training simulator generated accident scenarios. These scenarios include; hot and cold leg loss of coolant, control rod ejection, loss of offsite power, main steam line break, main feedwater line break and steam generator tube leak accidents. Findings show that ANNs can be used to diagnose and classify nuclear power plant conditions with good results.

  11. Nuclear power plant status diagnostics using artificial neural networks

    SciTech Connect (OSTI)

    Bartlett, E.B. (Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Mechanical Engineering); Uhrig, R.E. (Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering)

    1991-01-01T23:59:59.000Z

    In this work, the nuclear power plant operating status recognition issue is investigated using artificial neural networks (ANNs). The objective is to train an ANN to classify nuclear power plant accident conditions and to assess the potential of future work in the area of plant diagnostics with ANNS. To this end, an ANN was trained to recognize normal operating conditions as well as potentially unsafe conditions based on nuclear power plant training simulator generated accident scenarios. These scenarios include; hot and cold leg loss of coolant, control rod ejection, loss of offsite power, main steam line break, main feedwater line break and steam generator tube leak accidents. Findings show that ANNs can be used to diagnose and classify nuclear power plant conditions with good results.

  12. Distributed Power Flow Control: Distributed Power Flow Control using Smart Wires for Energy Routing

    SciTech Connect (OSTI)

    None

    2012-04-24T23:59:59.000Z

    GENI Project: Smart Wire Grid is developing a solution for controlling power flow within the electric grid to better manage unused and overall transmission capacity. The 300,000 miles of high-voltage transmission line in the U.S. today are congested and inefficient, with only around 50% of all transmission capacity utilized at any given time. Increased consumer demand should be met in part with more efficient and an economical power flow. Smart Wire Grid’s devices clamp onto existing transmission lines and control the flow of power within—much like how internet routers help allocate bandwidth throughout the web. Smart wires could support greater use of renewable energy by providing more consistent control over how that energy is routed within the grid on a real-time basis. This would lessen the concerns surrounding the grid’s inability to effectively store intermittent energy from renewables for later use.

  13. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April 30, 2013, Santa Clara, CA 2 Outline * Introduction Power Electronics in Electric Drive Vehicles Automotive Power Electronics Module Operation Automotive...

  14. Concentrated Solar Thermoelectric Power

    Broader source: Energy.gov (indexed) [DOE]

    CONCENTRATING SOLAR POWER PROGRAM REVIEW 2013 Concentrated Solar Thermoelectric Power Principal Investigator: Prof. Gang Chen Massachusetts Institute of Technology Cambridge, MA...

  15. TVA- Green Power Providers

    Broader source: Energy.gov [DOE]

    Tennessee Valley Authority (TVA) and participating power distributors of TVA power offer a performance-based incentive program to homeowners and businesses for the installation of renewable...

  16. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, N.; Ingersoll, D.

    1995-01-03T23:59:59.000Z

    Electrolytes are disclosed for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids. 7 figures.

  17. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, Narayan (Albuquerque, NM); Ingersoll, David (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    Electrolytes for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids.

  18. Space charge measurements downwind from a monopolar 500 KV HVDC test line

    SciTech Connect (OSTI)

    Carter, P.J.; Johnson, G.B. (General Electric Co., EPRI-High Voltage Transmission, Research Center, Lenox, MA (US))

    1988-10-01T23:59:59.000Z

    One quantity that helps describe the electrical environment in the vicinity of a HVDC line is space charge, a quantity that consists of charged air ions and charged aerosols. This paper describes measurements made at the Electric Power Research Institute's High Voltage Transmission Research Center (HVTRC) in Lenox, MA to determine the concentration of space charge present downwind of a HVDC test line and the influence of wind on the space charge level. The instrumentation used to make the measurements of space charge downwind of the line is also described.

  19. Flex power perspectives of indirect power system control through...

    Open Energy Info (EERE)

    power perspectives of indirect power system control through dynamic power price (Smart Grid Project) Jump to: navigation, search Project Name Flex power perspectives of indirect...

  20. New Horizons Mission Powered by Space Radioisotope Power Systems...

    Energy Savers [EERE]

    New Horizons Mission Powered by Space Radioisotope Power Systems New Horizons Mission Powered by Space Radioisotope Power Systems January 30, 2008 - 6:47pm Addthis Artist's concept...

  1. EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO

    Broader source: Energy.gov [DOE]

    Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69 kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing the EA. Further information about the project is available on the project website.

  2. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, R.J.; Small, G.J.; Shields, P.A.

    1999-04-27T23:59:59.000Z

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes. 21 figs.

  3. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, Ryszard J. (Ames, IA); Small, Gerald J. (Ames, IA); Shields, Peter A. (Reading, MA)

    1999-04-27T23:59:59.000Z

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes.

  4. FB Line Basis for Interim Operation

    SciTech Connect (OSTI)

    Shedrow, B.

    1998-10-19T23:59:59.000Z

    The safety analysis of the FB-Line Facility indicates that the operation of FB-Line to support the current mission does not present undue risk to the facility and co-located workers, general public, or the environment.

  5. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Triple bottom line assessment of transport options for the UBC farm

    E-Print Network [OSTI]

    and analyzes viable vehicle options to be used at the UBC Farm using Triple bottom line assessment. These options include powering the vehicle with the traditional fossil fuels, natural gas, biodiesel, or use a hybrid or battery powered electric vehicle. After collaborative research on these methods, this report

  6. 1302 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 22, NO. 3, AUGUST 2007 Security-Constrained Optimal Coordination

    E-Print Network [OSTI]

    Fu, Yong

    1302 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 22, NO. 3, AUGUST 2007 Security-Constrained Optimal and transmission lines, within the outage scheduling horizon of weeks to months, with the security-constrained unit under study. Number of times at each interval. Index of interval. Power flow on line at time at interval

  7. Chromospheric Dynamics and Line Formation

    E-Print Network [OSTI]

    R. Hammer; P. Ulmschneider

    2007-07-14T23:59:59.000Z

    The solar chromosphere is very dynamic, due to the presence of large amplitude hydrodynamic waves. Their propagation is affected by NLTE radiative transport in strong spectral lines, which can in turn be used to diagnose the dynamics of the chromosphere. We give a basic introduction into the equations of NLTE radiation hydrodynamics and describe how they are solved in current numerical simulations. The comparison with observation shows that one-dimensional codes can describe strong brightenings quite well, but the overall chromospheric dynamics appears to be governed by three-dimensional shock propagation.

  8. Line-focus sun trackers

    SciTech Connect (OSTI)

    Gee, R.

    1980-05-01T23:59:59.000Z

    Sun trackers have been a troublesome component for line-focus concentrating collector systems. The problems have included poor accuracy, component failures, false locks on clouds, and restricted tracker operating ranges. In response to these tracking difficulties, a variety of improved sun trackers have been developed. A testing program is underway at SERI to determine the tracking accuracy of this new generation of sun trackers. The three major types of trackers are defined, some recent sun tracker developments are described, and the testing that is underway is outlined.

  9. ShaRE Credit Line

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclearHomelandMultivariate Metal-Organic FrameworksCredit Line

  10. Line Management Perspective: National Nuclear Security Administration...

    Broader source: Energy.gov (indexed) [DOE]

    National Nuclear Security Administration (NNSA) Line Management Perspective: National Nuclear Security Administration (NNSA) Addthis Description Slide Presentation by Jim...

  11. Discontinuities in transmission lines and wave guides

    E-Print Network [OSTI]

    Mathis, Harold Fletcher

    1952-01-01T23:59:59.000Z

    DISCONTINUITIES IN TRANSMISSION LINES AND WAVEGUIDES H. F. MATHIS DISCONTINUITIES IN TRANSMISSION LINES AND liVAVNGUIDBS A Thesis By Harola Fletcher htathis Approved as to style and content by: Chairman of Committee DISCONTINUITIES... Subject. Electrical Engineering COHERENT S PAGE I Introduct ion, II Dl. scontlnuit les in Transmission Lines 2 1. Some Seneral char aeter 1 st 1 ca of the transmission lines. . . , . . . , ~ 5 2 ~ 2. Types of dlscontlnuitles ln transmls- sl...

  12. A Roundtable Overview Driving the Top Line

    E-Print Network [OSTI]

    A Roundtable Overview Driving the Top Line #12;© 2012 Glassmeyer/McNamee Center for Digital of the Center for Digital Strategies. Driving the Top Line A Thought Leadership Roundtable on Digital, Switzerland for a discussion on how information technology can help companies drive top-line revenue. In many

  13. TWRS privatization phase 1 electrical power system

    SciTech Connect (OSTI)

    Singh, G.

    1997-05-30T23:59:59.000Z

    This document includes Conceptual Design Report (CDR) for a new 11 km (7 miles) 230 kV transmission line and a new 40 MVA substation (A6) which will be located east of Grout Facility in 200E Area tank farm. This substation will provide electrical power up to 20 MW each for two private contractor facilities for immobilization and disposal of low activity waste (LAW).

  14. Computation of the maximum loadability of a power system using nonlinear optimization

    E-Print Network [OSTI]

    Khabirov, Abdufarrukh

    2001-01-01T23:59:59.000Z

    the loading of system for different voltage limits. . 15 4 2-bus power system diagram. . 16 5 PV curve showing loadability margin. . 17 6 One-line diagram of three bus power system. . 36 7 One-line diagram for 5-bus power system. g One-line diagram for 9... given in Figure 4 by varying the Po at bus 2 from 0 to 1. 2, assuming the following system parameters: where X = 0. 26 pu R=O P = 0. 12 The results are given in the Table l. From this table one can see how the real load at the bus 2 changes as a...

  15. Synchronization Algorithms for Co-Simulation of Power Grid and Communication Networks

    SciTech Connect (OSTI)

    Ciraci, Selim; Daily, Jeffrey A.; Agarwal, Khushbu; Fuller, Jason C.; Marinovici, Laurentiu D.; Fisher, Andrew R.

    2014-09-11T23:59:59.000Z

    The ongoing modernization of power grids consists of integrating them with communication networks in order to achieve robust and resilient control of grid operations. To understand the operation of the new smart grid, one approach is to use simulation software. Unfortunately, current power grid simulators at best utilize inadequate approximations to simulate communication networks, if at all. Cooperative simulation of specialized power grid and communication network simulators promises to more accurately reproduce the interactions of real smart grid deployments. However, co-simulation is a challenging problem. A co-simulation must manage the exchange of informa- tion, including the synchronization of simulator clocks, between all simulators while maintaining adequate computational perfor- mance. This paper describes two new conservative algorithms for reducing the overhead of time synchronization, namely Active Set Conservative and Reactive Conservative. We provide a detailed analysis of their performance characteristics with respect to the current state of the art including both conservative and optimistic synchronization algorithms. In addition, we provide guidelines for selecting the appropriate synchronization algorithm based on the requirements of the co-simulation. The newly proposed algorithms are shown to achieve as much as 14% and 63% im- provement, respectively, over the existing conservative algorithm.

  16. Cross delay line sensor characterization

    SciTech Connect (OSTI)

    Owens, Israel J [Los Alamos National Laboratory; Remelius, Dennis K [Los Alamos National Laboratory; Tiee, Joe J [Los Alamos National Laboratory; Buck, Steven E [Los Alamos National Laboratory; Whittemore, Stephen R [Los Alamos National Laboratory; Thompson, David C [Los Alamos National Laboratory; Shirey, Robert [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    There exists a wealth of information in the scientific literature on the physical properties and device characterization procedures for complementary metal oxide semiconductor (CMOS), charge coupled device (CCD) and avalanche photodiode (APD) format detectors. Numerous papers and books have also treated photocathode operation in the context of photomultiplier tube (PMT) operation for either non imaging applications or limited night vision capability. However, much less information has been reported in the literature about the characterization procedures and properties of photocathode detectors with novel cross delay line (XDL) anode structures. These allow one to detect single photons and create images by recording space and time coordinate (X, Y & T) information. In this paper, we report on the physical characteristics and performance of a cross delay line anode sensor with an enhanced near infrared wavelength response photocathode and high dynamic range micro channel plate (MCP) gain (> 10{sup 6}) multiplier stage. Measurement procedures and results including the device dark event rate (DER), pulse height distribution, quantum and electronic device efficiency (QE & DQE) and spatial resolution per effective pixel region in a 25 mm sensor array are presented. The overall knowledge and information obtained from XDL sensor characterization allow us to optimize device performance and assess capability. These device performance properties and capabilities make XDL detectors ideal for remote sensing field applications that require single photon detection, imaging, sub nano-second timing response, high spatial resolution (10's of microns) and large effective image format.

  17. Power Series Introduction

    E-Print Network [OSTI]

    Vickers, James

    Power Series 16.4 Introduction In this section we consider power series. These are examples of infinite series where each term contains a variable, x, raised to a positive integer power. We use the ratio test to obtain the radius of convergence R, of the power series and state the important result

  18. Offshore Wind Power USA

    Broader source: Energy.gov [DOE]

    The Offshore Wind Power USA conference provides the latest offshore wind market updates and forecasts.

  19. Pricing Algorithms for Power Control and Beamformer Design in Interference Networks

    E-Print Network [OSTI]

    Honig, Michael L.

    receivers, a transmitter then selects resources according to a best response, which maximizes its utility scheme for resource allocation requires excessive information exchange and overhead for most practical.e., the information exchange and overhead can be adapted according to the size of the network. To model user demands

  20. McNary-John Day Transmission Line Project, Final Environmental Impact Statement

    SciTech Connect (OSTI)

    N /A

    2002-08-30T23:59:59.000Z

    Bonneville is proposing to construct, operate, and maintain a 79-mile-long 500-kilovolt-transmission line in Benton and Klickitat Counties, Washington, and Umatilla and Sherman Counties, Oregon. The new line would start at Bonneville's McNary Substation in Oregon and would cross the Columbia River just north of the substation into Washington. The line would then proceed west for about 70 miles along the Columbia River. At the John Day Dam, the line would again cross the Columbia River into Oregon and terminate at Bonneville's John Day Substation. The new line would parallel existing transmission lines for the entire length; mostly within existing available right-of-way. Presently, the existing transmission lines in the area are operating at capacity. These lines help move power from the east side of the Cascades to the west side, where there is a high need for electricity (cities along the I-5 corridor). Because the Northwest has only recently recovered from a shortfall in electric energy supply and a volatile wholesale power market in which prices reached record highs, there are many new proposals for facilities to generate new power. Some of these facilities are in the vicinity of the McNary-John Day project; the proposed line would help insure that existing and newly generated power could move through the system. Bonneville is also considering the No Action Alternative and several short-line routing alternatives. The short routing alternatives include three half-mile-long routes for getting from the McNary Substation to the Columbia River crossing; three two-mile-long routes where the Hanford-John Day transmission line joins the existing corridor; two 1,000-foot-long routes at corridor mile 32; and two 500-foot-long routes at corridor mile 35. This abbreviated final EIS consists of an introduction to the document, changes to the draft EIS, copies of all the comments received on the draft EIS, and Bonneville's written responses to the comments. The final EIS should be used as a companion document to the draft EIS (dated February 2002), which contains the full text of the affected environment, environmental analysis, and appendices.

  1. Dispersed power and renewables

    SciTech Connect (OSTI)

    O`Sullivan, J.B.

    1995-12-31T23:59:59.000Z

    Distributed power generation and renewable energy sources are discussed: The following topics are discussed: distributed resources, distributed generation, commercialization requirements, biomass power, location of existing biomass feedstocks, biomass business plan components, North Carolina BGCC partnership, New York biomass co-firing project, alfalfa for power and feed, Hawaii Pioneer Mill LOI project, next steps for biomass, wind power activity, photovoltaic modules and arrays, lead-acid batteries, superconducting magnetic energy storage, fuel cells, and electric power industry trends.

  2. Four cavity efficiency enhanced magnetically insulated line oscillator

    DOE Patents [OSTI]

    Lemke, R.W.; Clark, M.C.; Calico, S.E.

    1998-04-21T23:59:59.000Z

    A four cavity, efficient magnetically insulated line oscillator (C4-E MILO) having seven vanes and six cavities formed within a tube-like structure surrounding a cathode is disclosed. The C4-E MILO has a primary slow wave structure which is comprised of four vanes and the four cavities located near a microwave exit end of the tube-like structure. The primary slow wave structure is the four cavity portion of the magnetically insulated line oscillator (MILO). An RF choke is provided which is comprised of three of the vanes and two of the cavities. The RF choke is located near a pulsed power source portion of the tube-like structure surrounding the cathode. The RF choke increases feedback in the primary slow wave structure, prevents microwaves generated in the primary slow wave structure from propagating towards the pulsed power source and modifies downstream electron current so as to enhance microwave power generation. A beam dump/extractor is located at the exit end of the oscillator tube for extracting microwave power from the oscillator, and in conjunction with an RF extractor vane, which comprises the fourth vane of the primary slow wave structure (nearest the exit) having a larger gap radius than the other vanes of the primary SWS, comprises an RF extractor. Uninsulated electron flow is returned downstream towards the exit along an anode/beam dump region located between the beam dump/extractor and the exit where the RF is radiated at said RF extractor vane located near the exit and the uninsulated electron flow is disposed at the beam dump/extractor. 34 figs.

  3. Four cavity efficiency enhanced magnetically insulated line oscillator

    DOE Patents [OSTI]

    Lemke, Raymond W. (Albuquerque, NM); Clark, Miles C. (Albuquerque, NM); Calico, Steve E. (Albuquerque, NM)

    1998-04-21T23:59:59.000Z

    A four cavity, efficient magnetically insulated line oscillator (C4-E MILO) having seven vanes and six cavities formed within a tube-like structure surrounding a cathode. The C4-E MILO has a primary slow wave structure which is comprised of four vanes and the four cavities located near a microwave exit end of the tube-like structure. The primary slow wave structure is the four cavity (C4) portion of the magnetically insulated line oscillator (MILO). An RF choke is provided which is comprised of three of the vanes and two of the cavities. The RF choke is located near a pulsed power source portion of the tube-like structure surrounding the cathode. The RF choke increases feedback in the primary slow wave structure, prevents microwaves generated in the primary slow wave structure from propagating towards the pulsed power source and modifies downstream electron current so as to enhance microwave power generation. A beam dump/extractor is located at the exit end of the oscillator tube for extracting microwave power from the oscillator, and in conjunction with an RF extractor vane, which comprises the fourth vane of the primary slow wave structure (nearest the exit) having a larger gap radius than the other vanes of the primary SWS, comprises an RF extractor. Uninsulated electron flow is returned downstream towards the exit along an anode/beam dump region located between the beam dump/extractor and the exit where the RF is radiated at said RF extractor vane located near the exit and the uninsulated electron flow is disposed at the beam dump/extractor.

  4. Unsplit bipolar pulse forming line

    DOE Patents [OSTI]

    Rhodes, Mark A. (Pleasanton, CA)

    2011-05-24T23:59:59.000Z

    A bipolar pulse forming transmission line module and system for linear induction accelerators having first, second, third, and fourth planar conductors which form a sequentially arranged interleaved stack having opposing first and second ends, with dielectric layers between the conductors. The first and second planar conductors are connected to each other at the first end, and the first and fourth planar conductors are connected to each other at the second end via a shorting plate. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short at the first end a high voltage from the third planar conductor to the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.

  5. Magnetically insulated transmission line oscillator

    DOE Patents [OSTI]

    Bacon, Larry D. (Albuquerque, NM); Ballard, William P. (Albuquerque, NM); Clark, M. Collins (Albuquerque, NM); Marder, Barry M. (Albuquerque, NM)

    1988-01-01T23:59:59.000Z

    A magnetically insulated transmission line oscillator employs self-generated magnetic fields to generate microwave energy. An anode of the oscillator includes slow-wave structures which are formed of a plurality of thin conductive vanes defining cavities therebetween, and a gap is formed between the anode and a cathode of the oscillator. In response to a pulsed voltage applied to the anode and cathode, self-generated magnetic fields arfe produced in a cross-field orientation with respect to the orientation of the electric field between the anode and the cathode. The cross-field magnetic fields insulate the flow of electrons in the gap and confine the flow of electrons within the gap.

  6. Gamma-Ray Burst Lines

    E-Print Network [OSTI]

    Michael S. Briggs

    1999-10-20T23:59:59.000Z

    The evidence for spectral features in gamma-ray bursts is summarized. As a guide for evaluating the evidence, the properties of gamma-ray detectors and the methods of analyzing gamma-ray spectra are reviewed. In the 1980's, observations indicated that absorption features below 100 keV were present in a large fraction of bright gamma-ray bursts. There were also reports of emission features around 400 keV. During the 1990's the situation has become much less clear. A small fraction of bursts observed with BATSE have statistically significant low-energy features, but the reality of the features is suspect because in several cases the data of the BATSE detectors appear to be inconsistent. Furthermore, most of the possible features appear in emission rather than the expected absorption. Analysis of data from other instruments has either not been finalized or has not detected lines.

  7. Superconducting transmission line particle detector

    DOE Patents [OSTI]

    Gray, Kenneth E. (Naperville, IL)

    1989-01-01T23:59:59.000Z

    A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non-superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propogating in a superconducting transmission line are used to resolve N.sup.2 ambiguity of charged particle events.

  8. Superconducting transmission line particle detector

    DOE Patents [OSTI]

    Gray, K.E.

    1988-07-28T23:59:59.000Z

    A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non- superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propagating in a superconducting transmission line are used to resolve N/sup 2/ ambiguity of charged particle events. 6 figs.

  9. Power System Extreme Event Detection: The VulnerabilityFrontier

    SciTech Connect (OSTI)

    Lesieutre, Bernard C.; Pinar, Ali; Roy, Sandip

    2007-10-17T23:59:59.000Z

    In this work we apply graph theoretic tools to provide aclose bound on a frontier relating the number of line outages in a gridto the power disrupted by the outages. This frontier describes theboundary of a space relating the possible severity of a disturbance interms of power disruption, from zero to some maximum on the boundary, tothe number line outages involved in the event. We present the usefulnessof this analysis with a complete analysis of a 30 bus system, and presentresults for larger systems.

  10. Fast controller for a unity-power-factor PWM rectifier

    SciTech Connect (OSTI)

    Eissa, M.O.; Leeb, S.B.; Verghese, G.C. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Lab. for Electromagnetic and Electronic Systems] [Massachusetts Inst. of Tech., Cambridge, MA (United States). Lab. for Electromagnetic and Electronic Systems; Stankovic, A.M. [Northeastern Univ., Boston, MA (United States)] [Northeastern Univ., Boston, MA (United States)

    1996-01-01T23:59:59.000Z

    This paper presents an analog implementation of a fast controller for a unity-power-factor (UPF) PWM rectifier. The best settling times of many popular controllers for this type of converter are on the order of a few line cycles, corresponding to bandwidths under 20 Hz. The fast controller demonstrated in this paper can exercise control action at a rate comparable to the switching frequency rather than the line frequency. In order to accomplish this while maintaining unity power factor during steady-state operation, the fast controller employs a ripple-feedback cancellation scheme.

  11. Alvarado and Rajaraman. The 2003 Blackout: Did the System Operator Have Enough Power? page 1 Christensen Associates 4610 University Avenue, Ste. 700 Madison, WI 53705-2164 Voice 608.231.2266 Fax 608.231.2108

    E-Print Network [OSTI]

    transmission lines began tripping out of service. (It is also possible that there may have been other flow could overload some transmission lines that could contribute to the unreliability of the power grid. In such a case, power has to be re-routed to other less loaded transmission lines

  12. College of Agricultural Sciences fact sheet 7

    E-Print Network [OSTI]

    Boyer, Elizabeth W.

    overhead utility lines reduces electrical interruptions, provides safe condi- tions for the public a sustained interruption, results in a complete loss of power. Sustained outages occur mainly during severe weather, and may cause serious damage to electric facilities. The utility company hires contrac- tors

  13. IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 23, NO. 3, JULY 2008 1527 A Quasi-Monte Carlo Integration Method Applied to

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    --Coupled transmission lines, mutual coupling, power cables, power system transients. I. INTRODUCTION ACLASSICAL approach an effective numeric method to compute Pollaczek integral. This integral is widely used in transmission

  14. Enhancement of the helium resonance lines in the solar atmosphere by suprathermal electron excitation II: non-Maxwellian electron distributions

    E-Print Network [OSTI]

    G. R. Smith

    2003-06-20T23:59:59.000Z

    In solar EUV spectra the He I and He II resonance lines show unusual behaviour and have anomalously high intensities compared with other transition region lines. The formation of the helium resonance lines is investigated through extensive non-LTE radiative transfer calculations. The model atmospheres of Vernazza, Avrett & Loeser are found to provide reasonable matches to the helium resonance line intensities but significantly over-estimate the intensities of other transition region lines. New model atmospheres have been developed from emission measure distributions derived by Macpherson & Jordan, which are consistent with SOHO observations of transition region lines other than those of helium. These models fail to reproduce the observed helium resonance line intensities by significant factors. The possibility that non-Maxwellian electron distributions in the transition region might lead to increased collisional excitation rates in the helium lines is studied. Collisional excitation and ionization rates are re-computed for distribution functions with power law suprathermal tails which may form by the transport of fast electrons from high temperature regions. Enhancements of the helium resonance line intensities are found, but many of the predictions of the models regarding line ratios are inconsistent with observations. These results suggest that any such departures from Maxwellian electron distributions are not responsible for the helium resonance line intensities.

  15. Active Power Control from Wind Power (Presentation)

    SciTech Connect (OSTI)

    Ela, E.; Brooks, D.

    2011-04-01T23:59:59.000Z

    In order to keep the electricity grid stable and the lights on, the power system relies on certain responses from its generating fleet. This presentation evaluates the potential for wind turbines and wind power plants to provide these services and assist the grid during critical times.

  16. High power fast ramping power supplies

    SciTech Connect (OSTI)

    Marneris,I.; Bajon, E.; Bonati, R.; Sandberg, J.; Roser, T.; Tsoupas, N.

    2009-05-04T23:59:59.000Z

    Hundred megawatt level fast ramping power converters to drive proton and heavy ion machines are under research and development at accelerator facilities in the world. This is a leading edge technology. There are several topologies to achieve this power level. Their advantages and related issues will be discussed.

  17. EA-1972: Electric District 2 to Saguaro No. 2 Transmission Line Rebuild, Pinal County, Arizona

    Broader source: Energy.gov [DOE]

    Western Area Power Administration issued a Draft EA that assesses the potential environmental impacts of the proposed rebuild of a 35.6-mile transmission line that Western operates and maintains under an agreement with the Central Arizona Project. Additional information is available on the project website, http://www.wapa.gov/dsw/environment/ED2DOEEA1972.htm.

  18. A New Approach for Line Recognition in Large-size Images Using Hough Transform

    E-Print Network [OSTI]

    Lyu, Michael R.

    is very time- efficient for large-size images. 1. Introduction Hough Transform (HT) is a powerful toolA New Approach for Line Recognition in Large-size Images Using Hough Transform Jiqiang Song, Min Transform (HT) has been limited to small-size images for a long time. For large-size images, the peak

  19. EA-2007: Groton-Ordway 115-kV Transmission Line, Groton, South Dakota

    Broader source: Energy.gov [DOE]

    DOE’s Western Area Power Administration (Upper Great Plains Region) is preparing an EA that assesses the potential environmental impacts of a proposal to construct a new 115-kV transmission line that would connect Western’s existing Groton and Ordway Substations near Groton, South Dakota.

  20. EIS-0134: Charlie Creek-Belfield Transmission Line Project, North Dakota

    Broader source: Energy.gov [DOE]

    The Western Area Power Administration developed this EIS to assess the environmental impact of constructing a high voltage transmission line between Charlie Creek and Belfield, North Dakota, and a new substation near Belfield to as a means of adding transmission capacity to the area.