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1

Enhanced distributed energy resource system  

DOE Patents (OSTI)

A power transmission system including a direct current power source electrically connected to a conversion device for converting direct current into alternating current, a conversion device connected to a power distribution system through a junction, an energy storage device capable of producing direct current connected to a converter, where the converter, such as an insulated gate bipolar transistor, converts direct current from an energy storage device into alternating current and supplies the current to the junction and subsequently to the power distribution system. A microprocessor controller, connected to a sampling and feedback module and the converter, determines when the current load is higher than a set threshold value, requiring triggering of the converter to supply supplemental current to the power transmission system.

Atcitty, Stanley (Albuquerque, NM); Clark, Nancy H. (Corrales, NM); Boyes, John D. (Albuquerque, NM); Ranade, Satishkumar J. (Las Cruces, NM)

2007-07-03T23:59:59.000Z

2

Distributed Sensor Coordination for Advanced Energy Systems  

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

Distributed Sensor Coordination for Advanced Energy Systems Background As advanced energy systems grow in size, they require an increasing number of pressure, temperature, and...

3

Distributed Energy Storage Systems: Deployments and Learnings  

Science Conference Proceedings (OSTI)

Distributed Energy Storage Systems (DESS) or so-called “edge-of-grid” systems are small scale energy storage systems that are positioned at the edge of the distribution grid, downstream of the distribution transformer, on the utility side of the meter. These systems have the potential to significantly improve power quality for the consumer, while also having the capability to provide distribution system support. Several field trials of these systems are presently underway or are being ...

2012-12-31T23:59:59.000Z

4

Distributed Energy Systems Integration Group (Fact Sheet)  

Science Conference Proceedings (OSTI)

Factsheet developed to describe the activites of the Distributed Energy Systems Integration Group within NREL's Electricity, Resources, and Buildings Systems Integration center.

Not Available

2009-10-01T23:59:59.000Z

5

Distributed Energy Systems Corp | Open Energy Information  

Open Energy Info (EERE)

Systems Corp Systems Corp Jump to: navigation, search Name Distributed Energy Systems Corp Place Wallingford, Connecticut Zip CT 06492 Product The former holding company of Proton Energy Systems and Northern Power Systems that ceased to operate upon the sale of both subsidiaries. Coordinates 43.473755°, -72.976925° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.473755,"lon":-72.976925,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

6

Distributed Energy System Validation, Commissioning and  

E-Print Network (OSTI)

Distributed Energy System Validation, Commissioning and Qualification Test Report Prepared Agreement No. DE-FC26-06NT42847 Hawai`i Distributed Energy Resource Technologies for Energy Security Subtask for the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability Under Cooperative

7

Integrating Smart Distributed Energy Resources with Distribution Management Systems  

Science Conference Proceedings (OSTI)

No portion of the electric power grid has been impacted more by grid modernization (that is, the “smart grid”) than the electric distribution system. A central part of this transformation is the distribution management system (DMS), which integrates numerous remote monitoring and central control facilities with enterprise-level systems to optimize distribution system performance and accomplish a variety of business goals. At the same time, distributed energy resources are often connected ...

2012-09-21T23:59:59.000Z

8

NREL: Electric Infrastructure Systems Research - Distributed Energy  

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

Distributed Energy Resources Test Facility Distributed Energy Resources Test Facility NREL's Distributed Energy Resources Test Facility (DERTF) is a working laboratory for interconnection and systems integration testing. This state-of-the-art facility includes generation, storage, and interconnection technologies as well as electric power system equipment capable of simulating a real-world electric system. Photo of the Distributed Energy Resources Test Facility and an adjacent solar photovoltaic array. The Distributed Energy Resources Test Facility is located at the National Wind Technology Center near Boulder, Colorado. Take a virtual tour of the DERTF. Researchers at the facility can vary equipment configurations and introduce common electrical disturbances such as sags, swells, and harmonic issues on

9

Definition: Distribution Management System | Open Energy Information  

Open Energy Info (EERE)

Management System Management System Jump to: navigation, search Dictionary.png Distribution Management System A Distribution Management System (DMS) is a utility IT system capable of collecting, organizing, displaying and analyzing real-time or near real-time electric distribution system information. A DMS can also allow operators to plan and execute complex distribution system operations in order to increase system efficiency, optimize power flows, and prevent overloads. A DMS can interface with other operations applications such as geographic information systems (GIS), outage management systems (OMS), and customer information systems (CIS) to create an integrated view of distribution operations.[1] View on Wikipedia Wikipedia Definition In the recent years, utilization of electrical energy increased

10

Distributed Systems for Energy Management  

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

buildings-to-grid, responsive loads, on-line monitoring of efficiency programs, microgrids, and other forms of distributed resource management. A key challenge will be the...

11

System Support for Distributed Energy Management in Modular Operating Systems.  

E-Print Network (OSTI)

??This thesis proposes a novel approach for managing energy in modular operating systems. Our approach enables energy awareness if the resource-management subsystem is distributed among… (more)

Stöß, Jan

2010-01-01T23:59:59.000Z

12

Energy supply network design optimization for distributed energy systems  

Science Conference Proceedings (OSTI)

Based on the fluctuations in power and heat demand of the consumers in a region, this paper presents a bi-level programming model for the regional DES (distributed energy system) network planning. The model aims to minimize the total cost of the regional ... Keywords: Bi-level programming, Distributed energy system, Energy supply network, Hybrid algorithm

Ming Dong; Fenglan He; Hairui Wei

2012-11-01T23:59:59.000Z

13

RELIABILITY PLANNING IN DISTRIBUTED ELECTRIC ENERGY SYSTEMS  

E-Print Network (OSTI)

the Systems Integration Office California Energy Resources£ Systems Integration Requi-rements for Decentralized Energy

Kahn, E.

2011-01-01T23:59:59.000Z

14

Distributed Generation Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Distributed Generation Systems Inc Distributed Generation Systems Inc Name Distributed Generation Systems Inc Address 200 Union Blvd Place Lakewood, Colorado Zip 80228 Sector Wind energy Product Developer of electricity generation wind power facilities Website http://www.disgenonline.com/ Coordinates 39.718048°, -105.1324055° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.718048,"lon":-105.1324055,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

15

Energy Efficiency of Distributed Environmental Control Systems  

SciTech Connect

In this report, we present an analytical evaluation of the potential of occupant-regulated distributed environmental control systems (DECS) to enhance individual occupant thermal comfort in an office building with no increase, and possibly even a decrease in annual energy consumption. To this end we developed and applied several analytical models that allowed us to optimize comfort and energy consumption in partitioned office buildings equipped with either conventional central HVAC systems or occupant-regulated DECS. Our approach involved the following interrelated components: 1. Development of a simplified lumped-parameter thermal circuit model to compute the annual energy consumption. This was necessitated by the need to perform tens of thousands of optimization calculations involving different US climatic regions, and different occupant thermal preferences of a population of ~50 office occupants. Yearly transient simulations using TRNSYS, a time-dependent building energy modeling program, were run to determine the robustness of the simplified approach against time-dependent simulations. The simplified model predicts yearly energy consumption within approximately 0.6% of an equivalent transient simulation. Simulations of building energy usage were run for a wide variety of climatic regions and control scenarios, including traditional “one-size-fits-all” (OSFA) control; providing a uniform temperature to the entire building, and occupant-selected “have-it-your-way” (HIYW) control with a thermostat at each workstation. The thermal model shows that, un-optimized, DECS would lead to an increase in building energy consumption between 3-16% compared to the conventional approach depending on the climate regional and personal preferences of building occupants. Variations in building shape had little impact in the relative energy usage. 2. Development of a gradient-based optimization method to minimize energy consumption of DECS while keeping each occupant’s thermal dissatisfaction below a given threshold. The DECS energy usage was calculated using the simplified thermal model. OSFA control; providing a uniform temperature to the entire building, and occupant-selected HIYW control with a thermostat at each workstation were implemented for 3 cities representing 3 different climatic regions and control scenarios. It is shown that optimization allows DECS to deliver a higher level of individual and population thermal comfort while achieving annual energy savings between 14 and 26% compared to OSFA. The optimization model also allowed us to study the influence of the partitions’ thermal resistance and the variability of internal loads at each office. These influences didn’t make significant changes in the optimized energy consumption relative to OSFA. The results show that it is possible to provide thermal comfort for each occupant while saving energy compared to OSFA Furthermore, to simplify the implementation of this approach, a fuzzy logic system has been developed to generalize the overall optimization strategy. Its performance was almost as good as the gradient system. The fuzzy system provided thermal comfort to each occupant and saved energy compared to OSFA. The energy savings of the fuzzy system were not as high as for the gradient-optimized system, but the fuzzy system avoided complete connectivity, and the optimization did not have to be repeated for each population. 3. We employed a detailed CFD model of adjacent occupied cubicles to extend the thermal-circuit model in three significant ways: (a) relax the “office wall” requirement by allowing energy to flow between zones via advection as well as conduction, (b) improve the comfort model to account both for radiation as well as convection heat transfer, and (c) support ventilation systems in which the temperature is stratified, such as in underfloor air distribution systems. Initially, three-dimensional CFD simulations of several cubicle configurations, with an adjoining corridor, were performed both to understand the advection between cubicles and the

Khalifa, H. Ezzat; Isik, Can; Dannenhoffer, John F. III

2011-02-23T23:59:59.000Z

16

Heat Distribution Systems | Department of Energy  

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

Distribution Systems Distribution Systems Heat Distribution Systems May 16, 2013 - 5:26pm Addthis Radiators are used in steam and hot water heating. | Photo courtesy of ©iStockphoto/Jot Radiators are used in steam and hot water heating. | Photo courtesy of ©iStockphoto/Jot Heat is distributed through your home in a variety of ways. Forced-air systems use ducts that can also be used for central air conditioning and heat pump systems. Radiant heating systems also have unique heat distribution systems. That leaves two heat distribution systems -- steam radiators and hot water radiators. Steam Radiators Steam heating is one of the oldest heating technologies, but the process of boiling and condensing water is inherently less efficient than more modern systems, plus it typically suffers from significant lag times between the

17

RELIABILITY PLANNING IN DISTRIBUTED ELECTRIC ENERGY SYSTEMS  

E-Print Network (OSTI)

applied to the case of hydroelectric facilities with large3. For comparison, the hydroelectric system in California asas droughts which reduce hydroelectric energy availability,

Kahn, E.

2011-01-01T23:59:59.000Z

18

A Smart Energy System: Distributed Resource Management, Control and Optimization  

E-Print Network (OSTI)

A Smart Energy System: Distributed Resource Management, Control and Optimization Yong Ding, Student of distributed energy resource and consumption management, which proposes to design a networked and embedded and energy data can be acquired and processed in a distributed manner in real time. In order to improve

Beigl, Michael

19

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II: Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table A2-12, p. B2-1....

20

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II: Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table 4-1, p. 4-4; and...

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


21

Distributed generation capabilities of the national energy modeling system  

E-Print Network (OSTI)

and Renewable Energy, Distributed Energy and ElectricPrepared for the Distributed Energy and Electric Reliabilityand Renewable Energy, Distributed Energy and Electric

LaCommare, Kristina Hamachi; Edwards, Jennifer L.; Marnay, Chris

2003-01-01T23:59:59.000Z

22

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

DOCU[viENTS SECTION DISTRIBUTED ENERGY SYSTEMS STUDY GROUPIMPLICATIONS OF UTILIZING DISTRIBUTED ENERGY TECHNOLOGIES .the development of distributed energy systems. technologies.

Authors, Various

2010-01-01T23:59:59.000Z

23

Distributed Energy Storage Systems Testing and Evaluation 2010 Interim Results  

Science Conference Proceedings (OSTI)

Distributed Energy Storage Systems (DESS) are fully integrated AC storage devices which can be located within the distribution system, at substation locations, off distribution feeders, near end-of-line pad mounted transformers, or on customer side of the meter locations. Many new and emerging storage systems are being developed for grid support, outage mitigation, power quality and peak load energy management. However there is limited operational data on performance, grid comparability, durability, reli...

2010-12-20T23:59:59.000Z

24

Optimal selection and sizing of distributed energy resources for distributed power systems  

Science Conference Proceedings (OSTI)

Optimal selection and sizing of distributed energy resources is an important research problem in the development of distributed power systems. This paper presents a methodology for optimal selection and sizing of distributed energy resources in integrated microgrids using the evolutionary strategy. Integrated microgrid is an innovative architecture in distributed power systems

Thillainathan Logenthiran; Dipti Srinivasan

2012-01-01T23:59:59.000Z

25

Distributed Energy Storage Systems for Padmounted or Pole Mount Transformers  

Science Conference Proceedings (OSTI)

The goal of this project is to define the specifications for distributed energy storage systems in a neighborhood or a community setting also known as a distributed energy storage (DES) system, where they can be co-located with pad-mounted transformers. In 2009, the program collaborated with a utility stakeholder interest group to further enhance functional specifications developed by AEP for such energy storage systems. Initial technology mapping, screening and cost and value analysis have also been con...

2009-12-10T23:59:59.000Z

26

2012 Grid Strategy: Distribution Management System (DMS) Advanced Applications for Distributed Energy Resources  

Science Conference Proceedings (OSTI)

This report provides an overview of the management systems and the advanced applications that utilities in the Electric Power Research Institute’s (EPRI’s) multi-year Smart Grid Demonstration Initiative are using or plan to use to manage the distribution system and to monitor and control distributed energy resources (DER). The management systems covered in this report are the distribution management system (DMS), the distributed energy resource management system (DERMS), and the demand ...

2012-10-10T23:59:59.000Z

27

Distributed Sensor Coordination for Advanced Energy Systems  

Science Conference Proceedings (OSTI)

The ability to collect key system level information is critical to the safe, efficient and reli- able operation of advanced energy systems. With recent advances in sensor development, it is now possible to push some level of decision making directly to computationally sophisticated sensors, rather than wait for data to arrive to a massive centralized location before a decision is made. This type of approach relies on networked sensors (called “agents” from here on) to actively collect and process data, and provide key control deci- sions to significantly improve both the quality/relevance of the collected data and the as- sociating decision making. The technological bottlenecks for such sensor networks stem from a lack of mathematics and algorithms to manage the systems, rather than difficulties associated with building and deploying them. Indeed, traditional sensor coordination strategies do not provide adequate solutions for this problem. Passive data collection methods (e.g., large sensor webs) can scale to large systems, but are generally not suited to highly dynamic environments, such as ad- vanced energy systems, where crucial decisions may need to be reached quickly and lo- cally. Approaches based on local decisions on the other hand cannot guarantee that each agent performing its task (maximize an agent objective) will lead to good network wide solution (maximize a network objective) without invoking cumbersome coordination rou- tines. There is currently a lack of algorithms that will enable self-organization and blend the efficiency of local decision making with the system level guarantees of global decision making, particularly when the systems operate in dynamic and stochastic environments. In this work we addressed this critical gap and provided a comprehensive solution to the problem of sensor coordination to ensure the safe, reliable, and robust operation of advanced energy systems. The differentiating aspect of the proposed work is in shift- ing the focus towards “what to observe” rather than “how to observe” in large sensor networks, allowing the agents to actively determine both the structure of the network and the relevance of the information they are seeking to collect. In addition to providing an implicit coordination mechanism, this approach allows the system to be reconfigured in response to changing needs (e.g., sudden external events requiring new responses) or changing sensor network characteristics (e.g., sudden changes to plant condition). Outcome Summary: All milestones associated with this project have been completed. In particular, private sensor objective functions were developed which are aligned with the global objective function, sensor effectiveness has been improved by using “sensor teams,” system efficiency has been improved by 30% using difference evaluation func- tions, we have demonstrated system reconfigurability for 20% changes in system con- ditions, we have demonstrated extreme scalability of our proposed algorithm, we have demonstrated that sensor networks can overcome disruptions of up to 20% in network conditions, and have demonstrated system reconfigurability to 20% changes in system conditions in hardware-based simulations. This final report summarizes how each of these milestones was achieved, and gives insight into future research possibilities past the work which has been completed. The following publications support these milestones [6, 8, 9, 10, 16, 18, 19].

Tumer, Kagan

2013-07-31T23:59:59.000Z

28

Integrating Renewable Energy into the Transmission and Distribution System  

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

Integrating Renewable Energy into the Transmission and Distribution Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands This report describes one area in which islands may lead: integrating a high percentage of renewable energy resources into an isolated grid. In addition, it explores the challenges, feasibility, and potential benefits of interconnecting the USVI grids with the much larger Puerto Rican grid. 51294.pdf More Documents & Publications USVI Energy Road Map: Charting the Course to a Clean Energy Future (Brochure), EDIN (Energy Development in Island Nations), U.S. Virgin Islands U.S. Virgin Islands Energy Road Map: Analysis Waste-to-Energy Evaluation: U.S. Virgin Islands

29

RELIABILITY PLANNING IN DISTRIBUTED ELECTRIC ENERGY SYSTEMS  

E-Print Network (OSTI)

Cogeneration Geothermal Hydro Wind Energy (10 12 Btu) (l09Geothermal Hydro Central Station Energy (1012 Btu ) kWh)hydro is represented by its turbine capacity and energy An

Kahn, E.

2011-01-01T23:59:59.000Z

30

Optimum model-E-GAMS for Distributed Energy System by Using GAMS Method  

E-Print Network (OSTI)

Marnay?LBNL ?????? ? ? Distributed Energy Resources Customermodel-E-GAMS for distributed energy system by using GAMS

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Zhou, Nan; Xuan, Ji; Marnay, Chris

2005-01-01T23:59:59.000Z

31

GridLab Power Distribution System Simulation | Open Energy Information  

Open Energy Info (EERE)

GridLab Power Distribution System Simulation GridLab Power Distribution System Simulation Jump to: navigation, search Tool Summary Name: GridLab Power Distribution System Simulation Agency/Company /Organization: Pacific Northwest National Laboratory Sector: Energy Focus Area: Grid Assessment and Integration Phase: Evaluate Options Topics: Pathways analysis User Interface: Desktop Application Website: www.gridlabd.org/ Cost: Free OpenEI Keyword(s): EERE tool Language: English References: GridLAB-D Simulation Software[1] Examine in detail the interplay of every part of a distribution system with every other part of the system. GridLAB-D(tm) is a new power distribution system simulation and analysis tool that provides valuable information to users who design and operate distribution systems, and to utilities that wish to take advantage of the

32

RELIABILITY PLANNING IN DISTRIBUTED ELECTRIC ENERGY SYSTEMS  

E-Print Network (OSTI)

and deal only with solar cogeneration units that are assumedand Distributed. cogeneration). These provide just underparameters. as conventional cogeneration units. technologies

Kahn, E.

2011-01-01T23:59:59.000Z

33

Optimal Model of Distributed Energy System by Using GAMS and Case Study  

E-Print Network (OSTI)

Optimal Model of Distributed Energy System by Using GAMS andEnergy Reliability, Distributed Energy Program of the U.S.Optimal Model of Distributed Energy System by Using GAMS and

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Xuan, Ji; Zhou, Nan; Marnay, Chris

2005-01-01T23:59:59.000Z

34

Optimal Combination of Distributed Energy System in an Eco-Campus of Japan  

E-Print Network (OSTI)

Optimal Combination of Distributed Energy System in an Eco-and Renewable Energy, Distributed Energy Program of the U.S.OPTIMAL COMBINATION OF DISTRIBUTED ENERGY SYSTEM IN AN ECO-

Yang, Yongwen; Gao, Weijun; Zhou, Nan; Marnay, Chris

2006-01-01T23:59:59.000Z

35

Electricity, Resources, & Building Systems Integration Distributed Energy Publications  

E-Print Network (OSTI)

Consulting Services, LLC; Brett Oakleaf, Xcel Energy; Kenneth Wolf, Minnesota Public Utilities CommissionElectricity, Resources, & Building Systems Integration Center Distributed Energy Publications 2005 for a single phase high frequency AC microgrid, S. Chakraborty, M.D. Weiss and M.G. Simoes, IEEE Transaction

36

ENERGY STAR Building Upgrade Manual Chapter 8: Air Distribution Systems |  

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

8: Air Distribution 8: Air Distribution Systems Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

37

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

5 5 Typical Commercial Building Thermal Energy Distribution Design Load Intensities (Watts per SF) Distribution System Fans Other Central System Supply Fans Cooling Tower Fan Central System Return Fans Air-Cooled Chiller Condenser Fan 0.6 Terminal Box Fans 0.5 Exhaust Fans (2) Fan-Coil Unit Fans (1) Condenser Fans 0.6 Packaged or Split System Indoor Blower 0.6 Pumps Chilled Water Pump Condenser Water Pump Heating Water Pump Note(s): Source(s): 0.1 - 0.2 0.1 - 0.2 1) Unducted units are lower than those with some ductwork. 2) Strong dependence on building type. BTS/A.D. Little, Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II:Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table 3-1, p. 3-6. 0.3 - 1.0 0.1 - 0.3 0.1 - 0.4

38

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

surrounding a wind energy conversion system may be the bestEnergy System Grouping of Technical Options for Formulation of Distributed Energy Systems Biomass Conversion .

Balderston, F.

2010-01-01T23:59:59.000Z

39

Application of an Energy Management System to a Distribution Center  

E-Print Network (OSTI)

Capital outlays for energy management must be economically attractive to warrant an expenditure. An energy management system has one of the most economic returns for an investment decision, if applied effectively. The Quaker Oats Company installed such a System in its Dallas Distribution Center. In one year the electric bills were reduced by a total of $17,668.91. Electric consumption (KWH) was reduced by thirty-one percent, electrical demand (KW) was reduced by thirty-six percent while plant operations expanded. This paper discusses the control strategies employed by the energy management system and provided the resultant savings that was obtained from the first year of operation.

Warnick, T.

1984-01-01T23:59:59.000Z

40

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

OF UTILIZING DISTRIBUTED ENERGY TECHNOLOGIES . . . . . . .DISTRIBUTED ENERGY SYSTEMS I~N CALIF RNIA/S FUTURE: UU-6831Ur'l1E:i\\i-fS SECTION DISTRIBUTED ENERGY SYSTEMS STUDY GROUP

Balderston, F.

2010-01-01T23:59:59.000Z

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


41

NAS Battery Distributed Energy Storage System Best Practices  

Science Conference Proceedings (OSTI)

Utility transmission and distribution (T&D) systems require extensive investment for upkeep. In addition, load growth over time increases the possibility of overload conditions, or loss of load, which may require upgrades to guard against these contingency events. In some situations, installation of sodium-sulfur (NAS) energy storage systems may solve a capacity shortfall and defer the need for an upgrade. Such installations can improve system reliability and customer service, while reducing the economic...

2008-12-04T23:59:59.000Z

42

Automated Energy Distribution and Reliability System (AEDR): Final Report  

Science Conference Proceedings (OSTI)

This report describes Northern Indiana Public Service Co. project efforts to develop an automated energy distribution and reliability system. The purpose of this project was to implement a database-driven GIS solution that would manage all of the company's gas, electric, and landbase objects.

Buche, D. L.

2008-07-01T23:59:59.000Z

43

Automated Energy Distribution and Reliability System Status Report  

Science Conference Proceedings (OSTI)

This report describes Northern Indiana Public Service Co. project efforts to develop an automated energy distribution and reliability system. The purpose of this project was to implement a database-driven GIS solution that would manage all of the company's gas, electric, and landbase objects.

Buche, D. L.; Perry, S.

2007-10-01T23:59:59.000Z

44

Smart Distribution Applications for Distributed Energy Resources: Distribution Management System Use Cases  

Science Conference Proceedings (OSTI)

Technology advancements in solar photovoltaic and battery storage have driven sharp increases in their deployment by utilities, consumers, and third parties. Distributed energy resources (DERs), such as solar photovoltaic and battery storage, are often connected to the grid with a smart inverter at the distribution level, and distribution operational require¬ments are being greatly impacted by their presence. Smart inverters have advanced message processing and fast power control ...

2013-12-22T23:59:59.000Z

45

Category:Smart Grid Projects - Electric Distributions Systems | Open Energy  

Open Energy Info (EERE)

Distributions Systems category. Distributions Systems category. Pages in category "Smart Grid Projects - Electric Distributions Systems" The following 13 pages are in this category, out of 13 total. A Atlantic City Electric Company Smart Grid Project Avista Utilities Smart Grid Project C Consolidated Edison Company of New York, Inc. Smart Grid Project E El Paso Electric Smart Grid Project H Hawaii Electric Co. Inc. Smart Grid Project M Memphis Light, Gas and Water Division Smart Grid Project Municipal Electric Authority of Georgia Smart Grid Project N Northern Virginia Electric Cooperative Smart Grid Project NSTAR Electric Company Smart Grid Project P Powder River Energy Corporation Smart Grid Project P cont. PPL Electric Utilities Corp. Smart Grid Project S Snohomish County Public Utilities District Smart Grid Project

46

Testing and Evaluation of Distributed Energy Storage Systems  

Science Conference Proceedings (OSTI)

This report describes two separate testing activities conducted by EPRI in the course of 2011. The first activity is the testing of distributed energy storage systems (DESS) at the EPRI lab in Knoxville, Tennessee. The second activity is the field testing of DESS at a test facility owned by San Diego Gas Electric Company (SDGE). These storage devices are typically located at or near the edge of the grid, potentially located with pad-mounted transformers. Because of their location near the load, they can ...

2011-12-30T23:59:59.000Z

47

Property:Distributed Generation System Enclosure | Open Energy Information  

Open Energy Info (EERE)

System Enclosure System Enclosure Jump to: navigation, search This is a property of type String. The allowed values for this property are: Indoor Outdoor Dedicated Shelter Pages using the property "Distributed Generation System Enclosure" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Indoor + Distributed Generation Study/615 kW Waukesha Packaged System + Outdoor + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Outdoor + Distributed Generation Study/Arrow Linen + Outdoor + Distributed Generation Study/Dakota Station (Minnegasco) + Outdoor + Distributed Generation Study/Elgin Community College + Indoor + Distributed Generation Study/Emerling Farm + Dedicated Shelter + Distributed Generation Study/Floyd Bennett + Outdoor +

48

Distributed Energy Resources for Carbon Emissions Mitigation  

E-Print Network (OSTI)

and Energy Reliability, Distribution System Integrationand Energy Reliability, Distribution System Integration

Firestone, Ryan; Marnay, Chris

2008-01-01T23:59:59.000Z

49

Studies of switching field and thermal energy barrier distributions in a FePt nanoparticle system  

E-Print Network (OSTI)

Studies of switching field and thermal energy barrier distributions in a FePt nanoparticle system X dependence of the thermal stability factor, the width of the thermal energy barrier distribution- ropy energy distribution and the interaction and the thermal energy barrier distribution determined

Laughlin, David E.

50

Property:Distributed Generation System Application | Open Energy  

Open Energy Info (EERE)

System Application System Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Application" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Combined Heat and Power + Distributed Generation Study/615 kW Waukesha Packaged System + Combined Heat and Power + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Combined Heat and Power + Distributed Generation Study/Arrow Linen + Combined Heat and Power + Distributed Generation Study/Dakota Station (Minnegasco) + Combined Heat and Power + Distributed Generation Study/Elgin Community College + Combined Heat and Power + Distributed Generation Study/Emerling Farm + Combined Heat and Power +

51

Distributed Energy | Department of Energy  

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

Distributed Distributed Energy Distributed Energy Distributed energy consists of a range of smaller-scale and modular devices designed to provide electricity, and sometimes also thermal energy, in locations close to consumers. They include fossil and renewable energy technologies (e.g., photovoltaic arrays, wind turbines, microturbines, reciprocating engines, fuel cells, combustion turbines, and steam turbines); energy storage devices (e.g., batteries and flywheels); and combined heat and power systems. Distributed energy offers solutions to many of the nation's most pressing energy and electric power problems, including blackouts and brownouts, energy security concerns, power quality issues, tighter emissions standards, transmission bottlenecks, and the desire for greater control over energy costs.

52

Property:Distributed Generation System Power Application | Open Energy  

Open Energy Info (EERE)

Application Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Power Application" Showing 21 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Based Load + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Based Load + Distributed Generation Study/Arrow Linen + Based Load + Distributed Generation Study/Dakota Station (Minnegasco) + Based Load +, Backup + Distributed Generation Study/Elgin Community College + Based Load +, Backup + Distributed Generation Study/Emerling Farm + Based Load + Distributed Generation Study/Floyd Bennett + Based Load + Distributed Generation Study/Harbec Plastics + Based Load + Distributed Generation Study/Hudson Valley Community College + Based Load +

53

Distributed generation capabilities of the national energy modeling system  

E-Print Network (OSTI)

Energy Information Administration Electricity Market Module of NEMS Geographic Information System(s) 10 9 (giga)watt 10 3 (kilo)watt Market Analysis

LaCommare, Kristina Hamachi; Edwards, Jennifer L.; Marnay, Chris

2003-01-01T23:59:59.000Z

54

Distributed Generation Systems Inc DISGEN | Open Energy Information  

Open Energy Info (EERE)

DISGEN DISGEN Jump to: navigation, search Name Distributed Generation Systems Inc (DISGEN) Place Lakewood, Colorado Zip 80228 Sector Wind energy Product Developer of Green Mountain (10.4 MW) and Ponnequin (16 MW) wind generation projects in the US. Manages everything from site selection through construction. Coordinates 45.300538°, -88.522572° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.300538,"lon":-88.522572,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

55

Energy Management of Steam Distribution Systems Through Energy Audits and Computerized Reporting Programs  

E-Print Network (OSTI)

"This presentation will highlight the economic losses associated with steam distribution systems and how to establish good energy management programs to reduce energy cost by 15 to 25 percent. Recognizing energy losses in steam systems involves: 1. Steam lost through defective valves, fittings and traps. 2. Loss through damaged or inefficient insulation. 3. Energy loss through misapplication of steam traps and improper piping practices. Energy management programs will cover steam energy auditing and computerized reporting systems that are proven methods of conserving energy and substantially reducing costs. Typical savings of a facility with 1,000 traps could exceed $300,000.00 annually. The use of computerized reporting systems can be a valuable tool in establishing good energy management practices and preventive maintenance programs. The reasons why, and the methods of how a computer aided preventive maintenance program can be established will be presented "

Rivers, N.; Mandzuk, N.

1988-09-01T23:59:59.000Z

56

What`s new in building energy research: Thermal distribution technology. DOE looks at cutting energy losses in a building`s heating and cooling distribution system  

SciTech Connect

The Department of Energy takes a look at cutting energy losses in a building`s heating and cooling distribution system.

1995-11-01T23:59:59.000Z

57

Distributed generation capabilities of the national energy modeling system  

SciTech Connect

This report describes Berkeley Lab's exploration of how the National Energy Modeling System (NEMS) models distributed generation (DG) and presents possible approaches for improving how DG is modeled. The on-site electric generation capability has been available since the AEO2000 version of NEMS. Berkeley Lab has previously completed research on distributed energy resources (DER) adoption at individual sites and has developed a DER Customer Adoption Model called DER-CAM. Given interest in this area, Berkeley Lab set out to understand how NEMS models small-scale on-site generation to assess how adequately DG is treated in NEMS, and to propose improvements or alternatives. The goal is to determine how well NEMS models the factors influencing DG adoption and to consider alternatives to the current approach. Most small-scale DG adoption takes place in the residential and commercial modules of NEMS. Investment in DG ultimately offsets purchases of electricity, which also eliminates the losses associated with transmission and distribution (T&D). If the DG technology that is chosen is photovoltaics (PV), NEMS assumes renewable energy consumption replaces the energy input to electric generators. If the DG technology is fuel consuming, consumption of fuel in the electric utility sector is replaced by residential or commercial fuel consumption. The waste heat generated from thermal technologies can be used to offset the water heating and space heating energy uses, but there is no thermally activated cooling capability. This study consists of a review of model documentation and a paper by EIA staff, a series of sensitivity runs performed by Berkeley Lab that exercise selected DG parameters in the AEO2002 version of NEMS, and a scoping effort of possible enhancements and alternatives to NEMS current DG capabilities. In general, the treatment of DG in NEMS is rudimentary. The penetration of DG is determined by an economic cash-flow analysis that determines adoption based on the n umber of years to a positive cash flow. Some important technologies, e.g. thermally activated cooling, are absent, and ceilings on DG adoption are determined by some what arbitrary caps on the number of buildings that can adopt DG. These caps are particularly severe for existing buildings, where the maximum penetration for any one technology is 0.25 percent. On the other hand, competition among technologies is not fully considered, and this may result in double-counting for certain applications. A series of sensitivity runs show greater penetration with net metering enhancements and aggressive tax credits and a more limited response to lowered DG technology costs. Discussion of alternatives to the current code is presented in Section 4. Alternatives or improvements to how DG is modeled in NEMS cover three basic areas: expanding on the existing total market for DG both by changing existing parameters in NEMS and by adding new capabilities, such as for missing technologies; enhancing the cash flow analysis but incorporating aspects of DG economics that are not currently represented, e.g. complex tariffs; and using an external geographic information system (GIS) driven analysis that can better and more intuitively identify niche markets.

LaCommare, Kristina Hamachi; Edwards, Jennifer L.; Marnay, Chris

2003-01-01T23:59:59.000Z

58

Economic Analysis of Building Distributed Energy System (BDES) in the Chinese Different Cities  

Science Conference Proceedings (OSTI)

In this paper, the feasibility and its running mode of Building Distributed Energy System (BDES) are analyzed for large public buildings based on energy tariffs investigated in some Chinese cities and building's load factor-user's heat-to electric ratio. ... Keywords: Energy tariffs, Building Distributed Energy System, Running economy

Yuan Yina, Ruan Yingjun, Liu Qingrong, Zhou Weiguo

2013-01-01T23:59:59.000Z

59

Understanding Energy Storage Solutions and Capabilities on Utility Distribution Systems  

Science Conference Proceedings (OSTI)

Widespread use of storage will require better grid integration tools to plan for the optimal size, use, and location of energy storage systems. Also important will be a coordinated effort between technology developers and utilities to ensure that storage systems are designed to adequately address utility needs. Utilities must understand the technical attributes and grid operational benefits of energy storage systems. Such operational benefits can also improve the definition of storage system functional r...

2011-12-22T23:59:59.000Z

60

Balancing Peer and Server Energy Consumption in Large Peer-to-Peer File Distribution Systems  

E-Print Network (OSTI)

Balancing Peer and Server Energy Consumption in Large Peer-to-Peer File Distribution Systems. This paper investigates the most energy efficient way to distribute a file to a large number of recipients] has been paid to its energy consumption. This paper considers large scale file distribution

Andrew, Lachlan

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


61

Estimating Energy and Water Losses in Residential Hot Water Distribution Systems  

E-Print Network (OSTI)

For dishwashers, not only is energy wasted as the hot waterhas the energy used to heat this water been wasted, but thewasted heat as water cools down in the distribution system after a draw; and the energy

Lutz, James

2005-01-01T23:59:59.000Z

62

Modeling of Inverter Control with Distribution Management System for Distributed Energy Resources  

Science Conference Proceedings (OSTI)

A distribution energy resource management system (DERMS) has been added as an external control to the OpenDSS software. This report discusses that control and provides case studies illustrating the feeder response. The visual interpretation of the feeder in the external control is similar to that of an operator’s control interface.The DERMS uses meters on a feeder to provide power flow data. This data is processed and used to update the control of the inverter-based generation. The ...

2013-12-20T23:59:59.000Z

63

Optimum Model-E-GAMS for Distributed Energy System by using GAMS Method  

E-Print Network (OSTI)

LBNL-57983 Optimum Model-E-GAMS for Distributed Energy System by using GAMS Method Yongwen Yang by the Office of Electricity Delivery and Energy Reliability, Distributed Energy Program of the U.S. Department Model DER-CAM GAMS 2GAMS GAMS 2 (general) (algebraic) (modeling system) FORTRAN DOfor for

64

There are no comprehensive energy studies of distributed scientific systems and workloads.  

E-Print Network (OSTI)

and energy. Advantage: Power/energy vs. performance tradeoffs possible. Disadvantage: Requires hardware/softwareThere are no comprehensive energy studies of distributed scientific systems and workloads. Without Results I: Distributed Application Power-performance Results II: Optimizing for Energy and Performance Top

Feng, Xizhou

65

Optimal Model of Distributed Energy System by Using GAMS and Case Study  

E-Print Network (OSTI)

price and electricity price, etc) and 1) The benefit of distributed energy system is from the technical information (co-generation, PV,

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Xuan, Ji; Zhou, Nan; Marnay, Chris

2005-01-01T23:59:59.000Z

66

Distributed generation capabilities of the national energy modeling system  

E-Print Network (OSTI)

N ATIONAL L ABORATORY Distributed Generation Capabilities ofemployer. LBNL-52432 Distributed Generation Capabilities of1.1 Definition of Distributed Generation and Interpretation

LaCommare, Kristina Hamachi; Edwards, Jennifer L.; Marnay, Chris

2003-01-01T23:59:59.000Z

67

Federal Energy Management Program: Distributed Energy Resources...  

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

Distributed Energy Resources and Combined Heat and Power Distributed energy resources (DER) and combined heat and power (CHP) systems help Federal agencies meet increased demand,...

68

Minimizing Energy Consumption in a Water Distribution System: A Systems Modeling Approach  

E-Print Network (OSTI)

In a water distribution system from groundwater supply, the bulk of energy consumption is expended at pump stations. These pumps pressurize the water and transport it from the aquifer to the distribution system and to elevated storage tanks. Each pump in the system has a range of possible operating conditions with varying flow rates, hydraulic head imparted, and hydraulic efficiencies. In this research, the water distribution system of a mid-sized city in a subtropical climate is modeled and optimized in order to minimize the energy usage of its fourteen pumps. A simplified model of the pipes, pumps, and storage tanks is designed using freely-available EPANET hydraulic modeling software. Physical and operational parameters of this model are calibrated against five weeks of observed data using a genetic algorithm to predict storage tank volume given a forecasted system demand. Uncertainty analysis on the calibrated parameters is performed to assess model sensitivity. Finally, the pumping schedule for the system's fourteen pumps is optimized using a genetic algorithm in order to minimize total energy use across a 24-hour period.

Johnston, John

2011-05-01T23:59:59.000Z

69

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

ENVIRONMENTAL IMPACTS OF ALTERNATIVE ENERGY TECHNOLOGIES FOROF DISTRIBUTIVE ENERGY TECHNOLOGY. INTRODUCTION. OverviewDISTRIBUTED ENERGY TECHNOLOGIES . . . . . . . iv Table of

Balderston, F.

2010-01-01T23:59:59.000Z

70

Best Practices Guidebook for Integration of Distributed Energy Resources Into Utility System Planning  

Science Conference Proceedings (OSTI)

DTE Energy's real-world experience in applying Distributed Energy Resources (DER) has yielded a number of important lessons, explained in greater detail in this guidebook. The guidebook is designed to help distribution organizations 1) evaluate DER as a potential solution to distribution system capacity shortfalls and 2) implement cost-effective DER installations that enhance system reliability and improve customer service. Following are key points of the lessons learned: Real management support is essen...

2006-02-13T23:59:59.000Z

71

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems  

E-Print Network (OSTI)

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems Thierry Gallay partial differential equa- tions on unbounded spatial domains. We consider systems for which the energy density e 0 satisfies an evolution law of the form te = divxf - d, where -f is the energy flux and d 0

Gallay, Thierry

72

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems  

E-Print Network (OSTI)

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems Thierry Gallay the energy density e # 0 satisfies an evolution law of the form # t e = div x f -d, where -f is the energy flux and d # 0 the energy dissipation rate. We also suppose that |f | 2 # b(e)d for some nonnegative

Gallay, Thierry

73

Simulation of energy performance of underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

plan. 9. Compare the energy usage between UFAD and OHthe differences in energy usage and peak demand betweenperformance (based on site energy usage) was best when

2009-01-01T23:59:59.000Z

74

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

6 1999 Energy Efficient Motors, Replacements and Sales, by Horsepower Class | Units in Use Horsepower | Energy Efficient Horsepower Range (106) | % Retired 1 - 5 | 17% 5.1 - 20 |...

75

The integration of renewable energy sources into electric power distribution systems. Volume 2, Utility case assessments  

Science Conference Proceedings (OSTI)

Electric utility distribution system impacts associated with the integration of renewable energy sources such as photovoltaics (PV) and wind turbines (WT) are considered in this project. The impacts are expected to vary from site to site according to the following characteristics: (1) The local solar insolation and/or wind characteristics; (2) renewable energy source penetration level; (3) whether battery or other energy storage systems are applied; and (4) local utility distribution design standards and planning practices. Small, distributed renewable energy sources are connected to the utility distribution system like other, similar kW- and MW-scale equipment and loads. Residential applications are expected to be connected to single-phase 120/240-V secondaries. Larger kw-scale applications may be connected to three-phase secondaries, and larger hundred-kW and MW-scale applications, such as MW-scale windfarms or PV plants, may be connected to electric utility primary systems via customer-owned primary and secondary collection systems. Small, distributed renewable energy sources installed on utility distribution systems will also produce nonsite-specific utility generation system benefits such as energy and capacity displacement benefits, in addition to the local site-specific distribution system benefits. Although generation system benefits are not site-specific, they are utility-specific, and they vary significantly among utilities in different regions. In addition, transmission system benefits, environmental benefits and other benefits may apply. These benefits also vary significantly among utilities and regions. Seven utility case studies considering PV, WT, and battery storage were conducted to identify a range of potential renewable energy source distribution system applications.

Zaininger, H.W.; Ellis, P.R.; Schaefer, J.C. [Zaininger Engineering Co., San Jose, CA (United States)

1994-06-01T23:59:59.000Z

76

The Integration of Renewable Energy Sources into Electric Power Distribution Systems, Vol. II Utility Case Assessments  

SciTech Connect

Electric utility distribution system impacts associated with the integration of renewable energy sources such as photovoltaics (PV) and wind turbines (WT) are considered in this project. The impacts are expected to vary from site to site according to the following characteristics: the local solar insolation and/or wind characteristics, renewable energy source penetration level, whether battery or other energy storage systems are applied, and local utility distribution design standards and planning practices. Small, distributed renewable energy sources are connected to the utility distribution system like other, similar kW- and MW-scale equipment and loads. Residential applications are expected to be connected to single-phase 120/240-V secondaries. Larger kW-scale applications may be connected to three+phase secondaries, and larger hundred-kW and y-scale applications, such as MW-scale windfarms, or PV plants, may be connected to electric utility primary systems via customer-owned primary and secondary collection systems. In any case, the installation of small, distributed renewable energy sources is expected to have a significant impact on local utility distribution primary and secondary system economics. Small, distributed renewable energy sources installed on utility distribution systems will also produce nonsite-specific utility generation system benefits such as energy and capacity displacement benefits, in addition to the local site-specific distribution system benefits. Although generation system benefits are not site-specific, they are utility-specific, and they vary significantly among utilities in different regions. In addition, transmission system benefits, environmental benefits and other benefits may apply. These benefits also vary significantly among utilities and regions. Seven utility case studies considering PV, WT, and battery storage were conducted to identify a range of potential renewable energy source distribution system applications. The following utility- and site-specific conditions that may affect the economic viability of distributed renewable energy sources were considered: distribution system characteristics, and design standards, and voltage levels; load density, reliability, and power quality; solar insolation and wind resource levels; utility generation characteristics and load profiles; and investor-owned and publicly owned utilities, size, and financial assumptions.

Zaininger, H.W.

1994-01-01T23:59:59.000Z

77

Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands  

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

Renewable Energy Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands Kari Burman, Dan Olis, Vahan Gevorgian, Adam Warren, and Robert Butt National Renewable Energy Laboratory Peter Lilienthal and John Glassmire HOMER Energy LLC Technical Report NREL/TP-7A20-51294 September 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Contract No. DE-AC36-08GO28308 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Technical Report NREL/TP-7A20-51294 September 2011 Integrating Renewable Energy into the Transmission and Distribution System of the

78

The Integration of Renewable Energy Sources into Electric Power Distribution Systems  

Science Conference Proceedings (OSTI)

Renewable energy technologies such as photovoltaic, solar thermal electricity, and wind turbine power are environmentally beneficial sources of electric power generation. The integration of renewable energy sources into electric power distribution systems can provide additional economic benefits because of a reduction in the losses associated with transmission and distribution lines. Benefits associated with the deferment of transmission and distribution investment may also be possible for cases where there is a high correlation between peak circuit load and renewable energy electric generation, such as photovoltaic systems in the Southwest. Case studies were conducted with actual power distribution system data for seven electric utilities with the participation of those utilities. Integrating renewable energy systems into electric power distribution systems increased the value of the benefits by about 20 to 55% above central station benefits in the national regional assessment. In the case studies presented in Vol. II, the range was larger: from a few percent to near 80% for a case where costly investments were deferred. In general, additional savings of at least 10 to 20% can be expected by integrating at the distribution level. Wind energy systems were found to be economical in good wind resource regions, whereas photovoltaic systems costs are presently a factor of 2.5 too expensive under the most favorable conditions.

Barnes, P.R.

1994-01-01T23:59:59.000Z

79

Simulation of energy performance of underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

energy consumption and the peak demand were calculated usingand also in the reduction of peak demand HVAC annual energymeasure to reduce peak demand. Key words Underfloor air

2009-01-01T23:59:59.000Z

80

Tools, Methods, and Modeling for Dynamic Distribution Systems, Power Factor Guidelines: Power Control with Distributed Energy Resources  

Science Conference Proceedings (OSTI)

With the onset in the past few years of tax incentives, subsidies, and renewable portfolio standards for distributed energy resources (DER), utilities are experiencing increasing numbers of interconnection requests for both large, MW-class systems as well as small, residential-scale systems. As a result, utilities need methods for integrating DER without impacting system reliability or power quality for other customers, while also maintaining flexibility for future changes and minimizing ...

2013-12-19T23:59:59.000Z

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


81

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

IMPACTS OF ALTERNATIVE ENERGY TECHNOLOGIES FOR CALIFORNIAOF DISTRIBUTIVE ENERGY TECHNOLOGY INTRODUCTI ON OverviewOF UTILIZING DISTRIBUTED ENERGY TECHNOLOGIES . SCALING UP TO

Authors, Various

2010-01-01T23:59:59.000Z

82

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

3 Thermal Distribution Design Load and Electricity Intensities, by Building Activity Education 0.5 1.3 Food Sales 1.1 6.4 Food Service 1.5 6.4 Health Care 1.5 5.6 Lodging 0.5 1.9...

83

Energy Star Building Upgrade Manual Air Distribution Systems...  

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

Variable-Speed Drives 16 Modify Controls 17 Pick Premium-Efficiency Motors 23 Use Energy-Efficient Belt Drives 25 Consider a Testing, Adjusting, and Balancing Contractor 26...

84

Abstract Microgrids are a new concept for future energy dis-tribution systems that enable renewable energy integration and  

E-Print Network (OSTI)

1 Abstract ­ Microgrids are a new concept for future energy dis- tribution systems that enable renewable energy integration and improved energy management capability. Microgrids consist of multiple power quality and power distribution reliability, microgrids need to operate in both grid

Collins, Emmanuel

85

Distribution of Equilibrium Free Energies in a Thermodynamic System with Broken  

E-Print Network (OSTI)

Abstract At low temperatures the configurational phase space of a macroscopic complex system (e.g., a spin-glass) of N ? 10 23 interacting particles may split into an exponential number ?s ? exp(const × N) of ergodic sub-spaces (thermodynamic states). It is usually assumed that the equilibrium collective behavior of such a system is determined by its ground thermodynamic states of the minimal free-energy density, and that the equilibrium free energies follow the distribution of exponential decay. But actually for some complex systems, the equilibrium free-energy values may follow a Gaussian distribution within an intermediate temperature range, and consequently their equilibrium properties are contributed by excited thermodynamic states. Based on this analysis, the re-weighting parameter y in the cavity approach of spin-glasses is easily understood. Depending on the free-energy distribution, the optimal y can either be equal to or be strictly less than the inverse temperature ?.

Zhou Hai-jun; Li Kang

2007-01-01T23:59:59.000Z

86

Natural gas transmission and distribution model of the National Energy Modeling System  

SciTech Connect

The Natural Gas Transmission and Distribution Model (NGTDM) is the component of the National Energy Modeling System (NEMS) that is used to represent the domestic natural gas transmission and distribution system. NEMS was developed in the Office of Integrated Analysis and Forecasting of the Energy Information Administration (EIA). NEMS is the third in a series of computer-based, midterm energy modeling systems used since 1974 by the EIA and its predecessor, the Federal Energy Administration, to analyze domestic energy-economy markets and develop projections. From 1982 through 1993, the Intermediate Future Forecasting System (IFFS) was used by the EIA for its analyses, and the Gas Analysis Modeling System (GAMS) was used within IFFS to represent natural gas markets. Prior to 1982, the Midterm Energy Forecasting System (MEFS), also referred to as the Project Independence Evaluation System (PIES), was employed. NEMS was developed to enhance and update EIA`s modeling capability by internally incorporating models of energy markets that had previously been analyzed off-line. In addition, greater structural detail in NEMS permits the analysis of a broader range of energy issues. The time horizon of NEMS is the midterm period (i.e., through 2015). In order to represent the regional differences in energy markets, the component models of NEMS function at regional levels appropriate for the markets represented, with subsequent aggregation/disaggregation to the Census Division level for reporting purposes.

1997-02-01T23:59:59.000Z

87

Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands  

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

Integrating Renewable Energy Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands Kari Burman, Dan Olis, Vahan Gevorgian, Adam Warren, and Robert Butt National Renewable Energy Laboratory Peter Lilienthal and John Glassmire HOMER Energy LLC Technical Report NREL/TP-7A20-51294 September 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Contract No. DE-AC36-08GO28308 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Technical Report NREL/TP-7A20-51294 September 2011 Integrating Renewable Energy into the Transmission and

88

Development, Demonstration, and Field Testing of Enterprise-Wide Distributed Generation Energy Management System: Final Report  

DOE Green Energy (OSTI)

This report details progress on subcontract NAD-1-30605-1 between the National Renewable Energy Laboratory and RealEnergy (RE), the purpose of which is to describe RE's approach to the challenges it faces in the implementation of a nationwide fleet of clean cogeneration systems to serve contemporary energy markets. The Phase 2 report covers: utility tariff risk and its impact on market development; the effect on incentives on distributed energy markets; the regulatory effectiveness of interconnection in California; a survey of practical field interconnection issues; trend analysis for on-site generation; performance of dispatch systems; and information design hierarchy for combined heat and power.

Greenberg, S.; Cooley, C.

2005-01-01T23:59:59.000Z

89

Using Aggregated Distributed Energy Resources for Economic Dispatch to an Independent System Operator  

Science Conference Proceedings (OSTI)

Utility distribution companies and other organizations have been interested in the potential of aggregating electricity generated by distributed energy resources (DER) and selling the power to the wholesale market during periods of peak system demand for a number of years. A few pilot projects have been undertaken, but this type of DER application is uncommon. This project is one of several underway in EPRI's program to help identify and quantify the potential value and business case of DER. Also work in...

2007-03-30T23:59:59.000Z

90

Using Aggregated Distributed Energy Resources for Economic Dispatch to an Independent System Operator 2007 Update  

Science Conference Proceedings (OSTI)

Utility distribution companies and other organizations are interested in the potential of aggregating electricity generated by distributed energy resources (DER) and selling the power to the wholesale market during periods of peak system demand for a number of years. A few pilot projects have been undertaken, but this type of DER application remains uncommon. This project is one of several underway in EPRI's program to help identify and quantify the potential value and business case of DER. This report u...

2008-02-28T23:59:59.000Z

91

Optimal Model of Distributed Energy System by Using GAMS and Case Study  

E-Print Network (OSTI)

market follows: information (gas price and electricity price, etc) and 1) The benefit of distributed energy

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Xuan, Ji; Zhou, Nan; Marnay, Chris

2005-01-01T23:59:59.000Z

92

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

DISTRIBUTED TECHNOLOGY ENERGY SUPPLY INDUSTRIES INTRODUCTIONenter an emerging energy supply industry based on the use oftechnology based energy supply industry since they possess

Balderston, F.

2010-01-01T23:59:59.000Z

93

Smart Distribution Applications for Distributed Energy Resources  

Science Conference Proceedings (OSTI)

P180.014 Smart Distribution Applications for Distributed Energy Resources (070625)The factors listed below all support the proliferation of Distributed Generating (DG) units in electric utility systems. The growing rate of DG deployment suggests that alternative energy-based solutions play an increasingly important role in the smart grid and modern utility.Deregulation of the electric utility industry in some countriesEnvironmental ...

2013-08-16T23:59:59.000Z

94

Automated Energy Distribution and Reliability System: Validation Integration - Results of Future Architecture Implementation  

SciTech Connect

This report describes Northern Indiana Public Service Co. project efforts to develop an automated energy distribution and reliability system. The purpose of this project was to implement a database-driven GIS solution that would manage all of the company's gas, electric, and landbase objects. This report is second in a series of reports detailing this effort.

Buche, D. L.

2008-06-01T23:59:59.000Z

95

Installation of the first Distributed Energy Storage System (DESS) at American Electric Power (AEP).  

DOE Green Energy (OSTI)

AEP studied the direct and indirect benefits, strengths, and weaknesses of distributed energy storage systems (DESS) and chose to transform its entire utility grid into a system that achieves optimal integration of both central and distributed energy assets. To that end, AEP installed the first NAS battery-based, energy storage system in North America. After one year of operation and testing, AEP has concluded that, although the initial costs of DESS are greater than conventional power solutions, the net benefits justify the AEP decision to create a grid of DESS with intelligent monitoring, communications, and control, in order to enable the utility grid of the future. This report details the site selection, construction, benefits and lessons learned of the first installation, at Chemical Station in North Charleston, WV.

Nourai, Ali (American Electric Power Company, Columbus, OH)

2007-06-01T23:59:59.000Z

96

Distributed Energy Fuel Cells  

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

Energy Fuel Cells Energy Fuel Cells DOE Hydrogen DOE Hydrogen and and Fuel Cells Fuel Cells Coordination Meeting Fuel Cell Coordination Meeting June 2-3, 2003 Electricity Users Kathi Epping Kathi Epping Objectives & Barriers Distributed Energy OBJECTIVES * Develop a distributed generation PEM fuel cell system operating on natural gas or propane that achieves 40% electrical efficiency and 40,000 hours durability at $400-750/kW by 2010. BARRIERS * Durability * Heat Utilization * Power Electronics * Start-Up Time Targets and Status Integrated Stationary PEMFC Power Systems Operating on Natural Gas or Propane Containing 6 ppm Sulfur 40,000 30,000 15,000 Hours Durability 750 1,250 2,500 $/kWe Cost 40 32 30 % Electrical Efficiency Large (50-250 kW) Systems 40,000 30,000 >6,000 Hours Durability 1,000 1,500 3,000

97

Integrating Renewable Energy into the Transmission and Distribution System of the U. S. Virgin Islands  

Science Conference Proceedings (OSTI)

This report focuses on the economic and technical feasibility of integrating renewable energy technologies into the U.S. Virgin Islands transmission and distribution systems. The report includes three main areas of analysis: 1) the economics of deploying utility-scale renewable energy technologies on St. Thomas/St. John and St. Croix; 2) potential sites for installing roof- and ground-mount PV systems and wind turbines and the impact renewable generation will have on the electrical subtransmission and distribution infrastructure, and 3) the feasibility of a 100- to 200-megawatt power interconnection of the Puerto Rico Electric Power Authority (PREPA), Virgin Islands Water and Power Authority (WAPA), and British Virgin Islands (BVI) grids via a submarine cable system.

Burman, K.; Olis, D.; Gevorgian, V.; Warren, A.; Butt, R.; Lilienthal, P.; Glassmire, J.

2011-09-01T23:59:59.000Z

98

Model documentation: Natural gas transmission and distribution model of the National Energy Modeling System. Volume 1  

SciTech Connect

The Natural Gas Transmission and Distribution Model (NGTDM) is the component of the National Energy Modeling System (NEMS) that is used to represent the domestic natural gas transmission and distribution system. NEMS was developed in the Office of integrated Analysis and Forecasting of the Energy information Administration (EIA). NEMS is the third in a series of computer-based, midterm energy modeling systems used since 1974 by the EIA and its predecessor, the Federal Energy Administration, to analyze domestic energy-economy markets and develop projections. The NGTDM is the model within the NEMS that represents the transmission, distribution, and pricing of natural gas. The model also includes representations of the end-use demand for natural gas, the production of domestic natural gas, and the availability of natural gas traded on the international market based on information received from other NEMS models. The NGTDM determines the flow of natural gas in an aggregate, domestic pipeline network, connecting domestic and foreign supply regions with 12 demand regions. The methodology employed allows the analysis of impacts of regional capacity constraints in the interstate natural gas pipeline network and the identification of pipeline capacity expansion requirements. There is an explicit representation of core and noncore markets for natural gas transmission and distribution services, and the key components of pipeline tariffs are represented in a pricing algorithm. Natural gas pricing and flow patterns are derived by obtaining a market equilibrium across the three main elements of the natural gas market: the supply element, the demand element, and the transmission and distribution network that links them. The NGTDM consists of four modules: the Annual Flow Module, the Capacity F-expansion Module, the Pipeline Tariff Module, and the Distributor Tariff Module. A model abstract is provided in Appendix A.

NONE

1995-02-17T23:59:59.000Z

99

A wlan scheduling algorithm to reduce the energy consumption of a distributed speech recognition system  

E-Print Network (OSTI)

In distributed speech recognition, speech features are computed on a mobile device, compressed, and sent to a server that performs the computationally intensive search for the most likely word sequence. Much of the current research in distributed speech recognition has been in the area of feature compression and communication robustness over wireless links, including error correction and concealment techniques. However, another challenge in designing a distributed speech recognition system is minimizing the energy consumption on the mobile device. We consider quality-of-service tradeoffs including compression ratio and overall system latency. Our measurements verify that for high speed wireless interfaces such as 802.11b, small changes in compression rates have little effect on system level energy consumption. However, for wireless networks with lower power/bit-rate ratios such as Bluetooth, the choice of bit-rate and compression ratio becomes more important. We present a wireless LAN scheduling algorithm to minimize the energy consumption of a distributed speech recognition front-end on a mobile device. By powering down the 802.11b interface when not in use, we are able to reduce the energy consumption by up to a factor of 5 in heavy traffic conditions. Increasing the total amount of time spent in the off state to almost one second will allow the system to save power regardless of traffic conditions. We compare the results of this power saving algorithm to the low-power mechanisms of Bluetooth. The lower overhead of Bluetooth allows for greater energy savings with a much lower delay of approximately 300ms. 1.

Brian Delaney; Nikil Jayant

2003-01-01T23:59:59.000Z

100

Model documentation: Natural Gas Transmission and Distribution Model of the National Energy Modeling System; Volume 1  

SciTech Connect

The Natural Gas Transmission and Distribution Model (NGTDM) is a component of the National Energy Modeling System (NEMS) used to represent the domestic natural gas transmission and distribution system. NEMS is the third in a series of computer-based, midterm energy modeling systems used since 1974 by the Energy Information Administration (EIA) and its predecessor, the Federal Energy Administration, to analyze domestic energy-economy markets and develop projections. This report documents the archived version of NGTDM that was used to produce the natural gas forecasts used in support of the Annual Energy Outlook 1994, DOE/EIA-0383(94). The purpose of this report is to provide a reference document for model analysts, users, and the public that defines the objectives of the model, describes its basic design, provides detail on the methodology employed, and describes the model inputs, outputs, and key assumptions. It is intended to fulfill the legal obligation of the EIA to provide adequate documentation in support of its models (Public Law 94-385, Section 57.b.2). This report represents Volume 1 of a two-volume set. (Volume 2 will report on model performance, detailing convergence criteria and properties, results of sensitivity testing, comparison of model outputs with the literature and/or other model results, and major unresolved issues.) Subsequent chapters of this report provide: (1) an overview of the NGTDM (Chapter 2); (2) a description of the interface between the National Energy Modeling System (NEMS) and the NGTDM (Chapter 3); (3) an overview of the solution methodology of the NGTDM (Chapter 4); (4) the solution methodology for the Annual Flow Module (Chapter 5); (5) the solution methodology for the Distributor Tariff Module (Chapter 6); (6) the solution methodology for the Capacity Expansion Module (Chapter 7); (7) the solution methodology for the Pipeline Tariff Module (Chapter 8); and (8) a description of model assumptions, inputs, and outputs (Chapter 9).

NONE

1994-02-24T23:59:59.000Z

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


101

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

of conventional energy conversion systems. The approachlarge-scale wave energy conversion systems have been built.energy is determined by the end-use amenity provided, conversion efficiency and the supply system

Authors, Various

2010-01-01T23:59:59.000Z

102

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

Electrification in Energy Systems", Paper presented at OakPublic Acceptance of Energy Conservation" paper presented atUniversity in The Energy Conservation Papers, Robert H.

Balderston, F.

2010-01-01T23:59:59.000Z

103

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

systems employing non-renewable energy sources in the finalwith traditional non-renewable energy forms. Thesetime perspective all non-renewable sources of energy are

Balderston, F.

2010-01-01T23:59:59.000Z

104

Distributed Wind | Open Energy Information  

Open Energy Info (EERE)

Distributed Wind Distributed Wind Jump to: navigation, search Distributed wind energy systems provide clean, renewable power for on-site use and help relieve pressure on the power grid while providing jobs and contributing to energy security for homes, farms, schools, factories, private and public facilities, distribution utilities, and remote locations.[1] Resources Clean Energy States Alliance. (2010). State-Based Financing Tools to Support Distributed and Community Wind Projects. Accessed September 27, 2013. This guide reviews the financing role that states, and specifically state clean energy funds, have played and can play in supporting community and distributed wind projects. Clean Energy States Alliance. (May 2010). Supporting Onsite Distributed Wind Generation Projects. Accessed September 27, 2013.

105

Model documentation Natural Gas Transmission and Distribution Model of the National Energy Modeling System. Volume 1  

Science Conference Proceedings (OSTI)

The Natural Gas Transmission and Distribution Model (NGTDM) of the National Energy Modeling System is developed and maintained by the Energy Information Administration (EIA), Office of Integrated Analysis and Forecasting. This report documents the archived version of the NGTDM that was used to produce the natural gas forecasts presented in the Annual Energy Outlook 1996, (DOE/EIA-0383(96)). The purpose of this report is to provide a reference document for model analysts, users, and the public that defines the objectives of the model, describes its basic approach, and provides detail on the methodology employed. Previously this report represented Volume I of a two-volume set. Volume II reported on model performance, detailing convergence criteria and properties, results of sensitivity testing, comparison of model outputs with the literature and/or other model results, and major unresolved issues.

NONE

1996-02-26T23:59:59.000Z

106

NREL: Learning - Distributed Energy Basics  

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

Distributed Energy Basics Distributed Energy Basics Photo of transmission towers and lines extending for miles towards a pink sunset in the distance. Distributed energy technologies can relieve transmission bottlenecks by reducing the amount of electricity that must be sent long distances down high-voltage power lines. Distributed energy refers to a variety of small, modular power-generating technologies that can be combined with load management and energy storage systems to improve the quality and/or reliability of the electricity supply. They are "distributed" because they are placed at or near the point of energy consumption, unlike traditional "centralized" systems, where electricity is generated at a remotely located, large-scale power plant and then transmitted down power lines to the consumer.

107

Optimum model-E-GAMS for Distributed Energy System by Using GAMSMethod  

DOE Green Energy (OSTI)

DER-CAM Developed by the Lawrence Berkeley National Laboratory (LBNL), is an optimization tool for DER technology selection. However it can not be simply applied to the Japanese case because of the different climate and the utility tariff. This research aims to develop an optimization tool for distributed energy for Japanese buildings using GAMS, a high-level modeling system for mathematical programming and optimization. This paper describes how we apply and demonstrate the tool to the energy center at Kitakyushu Research city, where has installed a fuel cell and a gas engine. An analysis has also been conducted to see how the utility tarriff and the equipment efficiency can affect the operation of the DER system.

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Zhou, Nan; Xuan, Ji; Marnay, Chris

2005-05-31T23:59:59.000Z

108

Distributed energy resources at naval base ventura county building 1512  

E-Print Network (OSTI)

up by a DER system. Distributed Energy Resources at NavalFebruary 2003. “Distributed Energy Resources in Practice: ARyan. January 2004. “Distributed Energy Resources Customer

Bailey, Owen C.; Marnay, Chris

2004-01-01T23:59:59.000Z

109

ETRANS: an energy transport system optimization code for distributed networks of solar collectors  

DOE Green Energy (OSTI)

The optimization code ETRANS was developed at the Pacific Northwest Laboratory to design and estimate the costs associated with energy transport systems for distributed fields of solar collectors. The code uses frequently cited layouts for dish and trough collectors and optimizes them on a section-by-section basis. The optimal section design is that combination of pipe diameter and insulation thickness that yields the minimum annualized system-resultant cost. Among the quantities included in the costing algorithm are (1) labor and materials costs associated with initial plant construction, (2) operating expenses due to daytime and nighttime heat losses, and (3) operating expenses due to pumping power requirements. Two preliminary series of simulations were conducted to exercise the code. The results indicate that transport system costs for both dish and trough collector fields increase with field size and receiver exit temperature. Furthermore, dish collector transport systems were found to be much more expensive to build and operate than trough transport systems. ETRANS itself is stable and fast-running and shows promise of being a highly effective tool for the analysis of distributed solar thermal systems.

Barnhart, J.S.

1980-09-01T23:59:59.000Z

110

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

wind energy conversibn systems. If located in coastal areas, the California Coastal Commission policies

Balderston, F.

2010-01-01T23:59:59.000Z

111

Primer on Distributed Energy Resources for Distribution Planning  

Science Conference Proceedings (OSTI)

Many factors -- including restructuring of the electric utility industry and an increased demand for electricity -- are driving the adoption of distributed energy technologies. This primer outlines the potential impacts that distributed generation and energy storage technologies (collectively called distributed energy resources) may have on utility distribution company planning. The primer focuses on distributed generation technologies with a capacity of 500 kW to 5 MW as well as energy storage systems w...

2002-10-09T23:59:59.000Z

112

Natural Gas Transmission and Distribution Model of the National Energy Modeling System. Volume 1  

Science Conference Proceedings (OSTI)

The Natural Gas Transmission and Distribution Model (NGTDM) is the component of the National Energy Modeling System (NEMS) that is used to represent the domestic natural gas transmission and distribution system. The NGTDM is the model within the NEMS that represents the transmission, distribution, and pricing of natural gas. The model also includes representations of the end-use demand for natural gas, the production of domestic natural gas, and the availability of natural gas traded on the international market based on information received from other NEMS models. The NGTDM determines the flow of natural gas in an aggregate, domestic pipeline network, connecting domestic and foreign supply regions with 12 demand regions. The purpose of this report is to provide a reference document for model analysts, users, and the public that defines the objectives of the model, describes its basic design, provides detail on the methodology employed, and describes the model inputs, outputs, and key assumptions. Subsequent chapters of this report provide: an overview of NGTDM; a description of the interface between the NEMS and NGTDM; an overview of the solution methodology of the NGTDM; the solution methodology for the Annual Flow Module; the solution methodology for the Distributor Tariff Module; the solution methodology for the Capacity Expansion Module; the solution methodology for the Pipeline Tariff Module; and a description of model assumptions, inputs, and outputs.

NONE

1998-01-01T23:59:59.000Z

113

Definition: Distributed Energy Resource | Open Energy Information  

Open Energy Info (EERE)

Resource Resource Jump to: navigation, search Dictionary.png Distributed Energy Resource A device that produces electricity, and is connected to the electrical system, either "behind the meter" in the customer's premise, or on the utility's primary distribution system. A Distributed Energy Resource (DER) can utilize a variety of energy inputs including, but not limited to, liquid petroleum fuels, biofuels, natural gas, solar, wind, and geothermal. Electricity storage devices can also be classified as DERs.[1] Also Known As DER Related Terms energy, biofuels, electricity storage technologies, system, electricity generation References ↑ https://www.smartgrid.gov/category/technology/distributed_energy_resource [[Categ LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

114

Laser Spark Distribution and Ignition System  

Laser Spark Distribution and Ignition System Opportunity The Department of Energy’s National Energy Technology Laboratory (NETL) is seeking licensing partners ...

115

Experiment and Simulation of Dynamic Voltage Regulation in Multiple Distributed Energy Resources Systems  

Science Conference Proceedings (OSTI)

Distributed energy (DE) resources are power sources located near load centers and equipped with power electronics converters to interface with the grid, therefore it is feasible for DE to provide reactive power (along with active power) locally for dynamic voltage regulation. In this paper, a synchronous condenser and a microturbine with an inverter interface are implemented in parallel in a distribution system to regulate the local voltage. Developed voltage control schemes for the inverter and the synchronous condenser are presented. Experimental results show that both the inverter and the synchronous condenser can regulate the local voltage instantaneously although the dynamic response of the inverter is much faster than the synchronous condenser. In a system with multiple DEs performing local voltage regulation, the interaction between the DEs is studied. The simulation results show the relationship between the voltages in the system and the reactive power required for the voltage regulation. Also, integrated voltage regulation (multiple DEs performing voltage regulation) can increase the voltage regulation capability of DEs and reduce the capital and operating costs.

Xu, Yan [ORNL; Li, Fangxing [ORNL; Kueck, John D [ORNL; Rizy, D Tom [ORNL

2007-01-01T23:59:59.000Z

116

Dual Path HVAC System Demonstration in School: Leveraging Thermal Energy Storage and Cold Air Distribution to Enhance System Perform ance in a Florida Elementary School  

Science Conference Proceedings (OSTI)

This document reports on a novel dual-path, low-temperature air distribution system demonstrated in a Florida elementary school. This system addresses high humidity levels and indoor air quality problems normally found in schools due to their large ventilation requirements, especially in humid climates. The dual-path system is also integrated with synergistic use of thermal energy storage and low-temperature air distribution, reduced energy use, and initial cost. The field data confirmed that the system ...

2002-10-21T23:59:59.000Z

117

Ductless Hydronic Distribution Systems  

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

8, 2011 8, 2011 Ductless Hydronic Distribution Systems Welcome to the Webinar! We will start at 1:00 PM Eastern Time Be sure that you are also dialed into the telephone conference call: Dial-in number: 800-779-8694; Pass code: 2506667 Download the presentation at: www.buildingamerica.gov/meetings.html Building Technologies Program eere.energy.gov * Reduce energy use in new and existing residential buildings * Promote building science and systems engineering / integration approach * "Do no harm": Ensure safety, health and durability are maintained or improved * Accelerate adoption of high performance technologies www.buildingamerica.gov Introduction to Building America Building Technologies Program eere.energy.gov Building America Industry Consortia

118

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Sources and Sales b Crude Oil Sources-in 10 California OtherImporl Coal Oil Storage 31.6 Source: Los Alamos ScientificCalifornia Oil Production Distribution of Energy Sources and

Authors, Various

2010-01-01T23:59:59.000Z

119

A method for the assessment of specific energy distribution in a model tumor system  

Science Conference Proceedings (OSTI)

Due to the short range of alpha particles in tissue, the calculation of dose from internally deposited alpha emitters requires a detailed analysis of the microscopic distribution of the radionuclide in order to determine the spatial distribution of energy emission events and, from this, the spatial distribution of dose. In the present study, the authors used quantitative autoradiography (QAR) to assess the microdistribution of a radiolabeled monoclonal antibody (MAb) fragment in human glioma xenografts in mice.

Noska, M.A.

1996-12-31T23:59:59.000Z

120

Energy and Enthalpy Distribution Functions for a Few Physical Systems K. L. Wu, J. H. Wei, S. K. Lai,*, and Y. Okabe  

E-Print Network (OSTI)

Energy and Enthalpy Distribution Functions for a Few Physical Systems K. L. Wu, J. H. Wei, S. K is devoted to extracting the energy or enthalpy distribution function of a physical system from the moments(E) is the normalized energy probability distribution function. It can be shown that P(E) displays a Gaussian form

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


121

Estimating Energy and Water Losses in Residential Hot WaterDistribution Systems  

DOE Green Energy (OSTI)

Residential single family building practice currently ignores the losses of energy and water caused by the poor design of hot water systems. These losses include; the waste of water while waiting for hot water to get to the point of use; the wasted heat as water cools down in the distribution system after a draw; and the energy needed to reheat water that was already heated once before. Average losses of water are estimated to be 6.35 gallons (24.0 L) per day. (This is water that is rundown the drain without being used while waiting for hot water.) The amount of wasted hot water has been calculated to be 10.9 gallons (41.3L) per day. (This is water that was heated, but either is not used or issued after it has cooled off.) A check on the reasonableness of this estimate is made by showing that total residential hot water use averages about 52.6 gallons (199 L) per day. This indicates about 20 percent of average daily hot water is wasted.

Lutz, James

2005-02-26T23:59:59.000Z

122

Analysis of Distribution System Effects of Energy Storage through Simulation and Modeling  

Science Conference Proceedings (OSTI)

Modeling and simulation activities within the Electric Power Research Institute (EPRI) storage integration program were initiated in 2011 and continued in 2012 to study the grid integration effects of storage on distribution systems. The intent is to develop analytic tools that can predict how storage can be sited, deployed, and used to achieve maximum value in real distribution systems with and without photovoltaic (PV) systems. The work reported as part of this technical update report describes a ...

2012-12-31T23:59:59.000Z

123

Distributed Energy Resources and Control: A power system point of view  

E-Print Network (OSTI)

intelligent control systems that can manage both the electrical and financial operation of the grid and new. In a distributed controller, data may be processed and e.g. reduced locally, supervised or remote that are solved locally, using local data. Then, information is shared between local distributed control centers

124

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

consideration of solar absorption cooling systems becomesStorage (80%) Solar Absorption Cooling (.31) Parabolicgeneration. For absorption cooling, the summer energy

Balderston, F.

2010-01-01T23:59:59.000Z

125

Active Distributed Power Systems Functional Structures for Real-Time Operation of Sustainable Energy Systems.  

E-Print Network (OSTI)

??Present power system will face great challenges in several areas depending on the market economy, extensive global integration and constant need for more electric power,… (more)

Svensson, Jörgen

2006-01-01T23:59:59.000Z

126

Water Heaters and Hot Water Distribution Systems  

E-Print Network (OSTI)

Water Distribution System Recommendations for the 2008 Title- 24 Residential Building Energy Efficiency Standards .. 4 Multi-FamilyWater Distribution System Recommendations for the 2008 Title- 24 Residential Building Energy Efficiency Standards 11 Multi-FamilyWater Distribution System Recommendations for the 2008 Title- 24 Residential Building Energy Efficiency Standards 48 Multi-Family

Lutz, Jim

2012-01-01T23:59:59.000Z

127

Integrating Renewable Energy into the Transmission and Distribution...  

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

Integrating Renewable Energy into the Transmission and Distribution System of the U.S. Virgin Islands Integrating Renewable Energy into the Transmission and Distribution System of...

128

Highlights of the solar total energy systems, distributed collector systems, and research and development projects. Semiannual review, 26-27 January 1976, Atlanta, Georgia  

DOE Green Energy (OSTI)

The highlights of the ERDA Solar Thermal Branch Semiannual Review held in Atlanta, Georgia, on January 26-27, 1976, are presented. Status and plans for Total Energy Systems, Distributed Collectors, and Research and Development Projects are reviewed. (WHK)

Latta, A.F.

1976-03-26T23:59:59.000Z

129

Advanced Power Electronic Interfaces for Distributed Energy Systems Part 1: Systems and Topologies  

DOE Green Energy (OSTI)

This report summarizes power electronic interfaces for DE applications and the topologies needed for advanced power electronic interfaces. It focuses on photovoltaic, wind, microturbine, fuel cell, internal combustion engine, battery storage, and flywheel storage systems.

Kramer, W.; Chakraborty, S.; Kroposki, B.; Thomas, H.

2008-03-01T23:59:59.000Z

130

Power Electronics for Distributed Energy Systems and Transmission and Distribution Applications: Assessing the Technical Needs for Utility Applications  

DOE Green Energy (OSTI)

Power electronics can provide utilities the ability to more effectively deliver power to their customers while providing increased reliability to the bulk power system. In general, power electronics is the process of using semiconductor switching devices to control and convert electrical power flow from one form to another to meet a specific need. These conversion techniques have revolutionized modern life by streamlining manufacturing processes, increasing product efficiencies, and increasing the quality of life by enhancing many modern conveniences such as computers, and they can help to improve the delivery of reliable power from utilities. This report summarizes the technical challenges associated with utilizing power electronics devices across the entire spectrum from applications to manufacturing and materials development, and it provides recommendations for research and development (R&D) needs for power electronics systems in which the U.S. Department of Energy (DOE) could make a substantial impact toward improving the reliability of the bulk power system.

Tolbert, L.M.

2005-12-21T23:59:59.000Z

131

Optimal Model of Distributed Energy System by Using GAMS and Case Study  

E-Print Network (OSTI)

system when energy prices (gas price and electricity price)Decreasing Situation of Gas Price and Operating Time of Gasthe relationship between gas price and operating time of gas

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Xuan, Ji; Zhou, Nan; Marnay, Chris

2005-01-01T23:59:59.000Z

132

Strategic Intelligence Update: Energy Storage & Distributed Generation  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2012-05-24T23:59:59.000Z

133

Strategic Intelligence Update: Energy Storage & Distributed Generation  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Energy storage at megawatt-hour scales can be used to enable generators to better follow load and stabilize transmission voltage and frequency. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage e...

2009-08-07T23:59:59.000Z

134

Strategic Intelligence Update: Distributed Generation & Energy Storage  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Energy storage at megawatt-hour scales can be used to enable generators to better follow load and stabilize transmission voltage and frequency. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage e...

2009-12-17T23:59:59.000Z

135

Strategic Intelligence Update: Energy Storage & Distributed Generation  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Energy storage at megawatt-hour scales can be used to enable generators to better follow load and stabilize transmission voltage and frequency. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage e...

2009-06-22T23:59:59.000Z

136

Strategic Intelligence Update: Distributed Generation & Energy Storage  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Energy storage at megawatt-hour scales can be used to enable generators to better follow load and stabilize transmission voltage and frequency. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage e...

2009-10-08T23:59:59.000Z

137

Strategic Intelligence Update: Energy Storage & Distributed Generation  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2012-03-20T23:59:59.000Z

138

Strategic Intelligence Update: Energy Storage & Distributed Generation  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2012-07-31T23:59:59.000Z

139

Distributed Energy Calculator | Open Energy Information  

Open Energy Info (EERE)

Distributed Energy Calculator Distributed Energy Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Distributed Energy Calculator Agency/Company /Organization: Apps for Energy Challenge Participant Sector: Energy Resource Type: Application prototype User Interface: Website Website: distributedenergycalculator.com/ OpenEI Keyword(s): Challenge Generated, Green Button Apps Language: English References: Apps for Energy[1] The Distributed Energy Calculator allows you to explore the potential energy savings for your community using Solar, Small Wind or Microturbines. The Distributed Energy Calculator allows you to explore the potential energy savings for your community using Solar, Small Wind or Microturbines. You can upload Green Button Data to compare your utility energy costs to

140

Development of advanced methods for planning electric energy distribution systems. Final report  

SciTech Connect

An extensive search was made for the identification and collection of reports published in the open literature which describes distribution planning methods and techniques. In addition, a questionnaire has been prepared and sent to a large number of electric power utility companies. A large number of these companies were visited and/or their distribution planners interviewed for the identification and description of distribution system planning methods and techniques used by these electric power utility companies and other commercial entities. Distribution systems planning models were reviewed and a set of new mixed-integer programming models were developed for the optimal expansion of the distribution systems. The models help the planner to select: (1) optimum substation locations; (2) optimum substation expansions; (3) optimum substation transformer sizes; (4) optimum load transfers between substations; (5) optimum feeder routes and sizes subject to a set of specified constraints. The models permit following existing right-of-ways and avoid areas where feeders and substations cannot be constructed. The results of computer runs were analyzed for adequacy in serving projected loads within regulation limits for both normal and emergency operation.

Goenen, T.; Foote, B.L.; Thompson, J.C.; Fagan, J.E.

1979-10-01T23:59:59.000Z

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


141

Development and Integration of CRAFT in Distributed Energy Management system Environment  

Science Conference Proceedings (OSTI)

CRAFT (Customer Restoration and Fault Testing), an on-line expert system, is currently operating in the control center at Puget Sound Power & Light Company. CRAFT is tightly integrated with the energy management system (EMS) and appears as an EMS application to the dispatchers.

1997-03-10T23:59:59.000Z

142

Federal Energy Management Program: Distributed Energy Resources...  

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

Energy Resources and Combined Heat and Power to someone by E-mail Share Federal Energy Management Program: Distributed Energy Resources and Combined Heat and Power on...

143

Federal Energy Management Program: Distributed Energy Resource...  

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

Resource Basics to someone by E-mail Share Federal Energy Management Program: Distributed Energy Resource Basics on Facebook Tweet about Federal Energy Management Program:...

144

Energy System Analysis at SINTEF Energy Research  

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

1989. His main areas of work include distributed energy systems, energy system planning, operation and control, ancillary services, frequency and power control, and power flow...

145

Distributed Wind Energy in Idaho  

SciTech Connect

Project Objective: This project is a research and development program aimed at furthering distributed wind technology. In particular, this project addresses some of the barriers to distributed wind energy utilization in Idaho. Background: At its core, the technological challenge inherent in Wind Energy is the transformation of a highly variable form of energy to one which is compatible with the commercial power grid or another useful application. A major economic barrier to the success of distributed wind technology is the relatively high capital investment (and related long payback periods) associated with wind turbines. This project will carry out fundamental research and technology development to address both the technological and economic barriers. � Active drive train control holds the potential to improve the overall efficiency of a turbine system by allowing variable speed turbine operation while ensuring a tight control of generator shaft speed, thus greatly simplifying power conditioning. � Recent blade aerodynamic advancements have been focused on large, utility-scale wind turbine generators (WTGs) as opposed to smaller WTGs designed for distributed generation. Because of Reynolds Number considerations, blade designs do not scale well. Blades which are aerodynamically optimized for distributed-scale WTGs can potentially reduce the cost of electricity by increasing shaft-torque in a given wind speed. � Grid-connected electric generators typically operate at a fixed speed. If a generator were able to economically operate at multiple speeds, it could potentially convert more of the wind�s energy to electricity, thus reducing the cost of electricity. This research directly supports the stated goal of the Wind and Hydropower Technologies Program for Distributed Wind Energy Technology: By 2007, reduce the cost of electricity from distributed wind systems to 10 to 15 cents/kWh in Class 3 wind resources, the same level that is currently achievable in Class 5 winds.

Gardner, John; Ferguson, James; Ahmed-Zaid, Said; Johnson, Kathryn; Haynes, Todd; Bennett, Keith

2009-01-31T23:59:59.000Z

146

Cooling water distribution system  

DOE Patents (OSTI)

A passive containment cooling system for a nuclear reactor containment vessel. Disclosed is a cooling water distribution system for introducing cooling water by gravity uniformly over the outer surface of a steel containment vessel using an interconnected series of radial guide elements, a plurality of circumferential collector elements and collector boxes to collect and feed the cooling water into distribution channels extending along the curved surface of the steel containment vessel. The cooling water is uniformly distributed over the curved surface by a plurality of weirs in the distribution channels.

Orr, Richard (Pittsburgh, PA)

1994-01-01T23:59:59.000Z

147

Ettore F. BOMPARD, European Commission, Institute for Energy and Market-based control in emerging distribution system operation  

E-Print Network (OSTI)

in emerging distribution system operation In emerging electrical distribution systems, a multitude of self by distributed and adaptive control signals over prosumers, market-based control needs to make prosumer benefits

Nesterov, Yurii

148

Electric vehicle-intelligent energy management system for frequency regulation application using a distributed, prosumer-based grid control architecture .  

E-Print Network (OSTI)

??The world faces the unprecedented challenge of the need change to a new energy era. The introduction of distributed renewable energy and storage together with… (more)

Sandoval, Marcelo

2013-01-01T23:59:59.000Z

149

Distribution System Research Priorities  

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

Mark McGranaghan Mark McGranaghan EPRI ELECTRICITY DISTRIBUTION SYSTEM WORKSHOP Crystal City, VA September 24, 2012 Distribution System Research Priorities 2 © 2012 Electric Power Research Institute, Inc. All rights reserved. The Power System Roadmaps start with a Vision Future Power System will require new technologies, infrastructure, and control systems 3 © 2012 Electric Power Research Institute, Inc. All rights reserved. R&D Roadmaps - Coordination is Critical Roadmaps are living documents 4 © 2012 Electric Power Research Institute, Inc. All rights reserved. Developing the next generation grid * Industry needs new technologies, communication protocols, and information management methods - More variable generation sources and controllable loads - Aging infrastructure

150

Distributed Energy Resource Optimization Using a Software as Service (SaaS) Approach at the University of California, Davis Campus  

E-Print Network (OSTI)

Irrigation Management Information Systems Distributed EnergyResources Distributed Energy Resources Customer Adoptionprogram, the Distributed Energy Resources Customer Adoption

Michael, Stadler

2011-01-01T23:59:59.000Z

151

Optimal Combination of Distributed Energy System in an Eco-Campus of Japan  

E-Print Network (OSTI)

e n / k W h (0.067$/kWh). n heat price Current system C+PV+(PV+(DERwith CHP) DERwith CHP Do- Nothing Ene;rgy aver age pric e]\\/kWi) Fig.12.Heat unit price

Yang, Yongwen; Gao, Weijun; Zhou, Nan; Marnay, Chris

2006-01-01T23:59:59.000Z

152

Energy- and performance-aware scheduling of tasks on parallel and distributed systems  

Science Conference Proceedings (OSTI)

Enabled by high-speed networking in commercial, scientific, and government settings, the realm of high performance is burgeoning with greater amounts of computational and storage resources. Large-scale systems such as computational grids consume a significant ... Keywords: Energy-aware scheduling, dynamic power management, dynamic voltage and frequency scaling, task allocation algorithms

Hafiz Fahad Sheikh; Hengxing Tan; Ishfaq Ahmad; Sanjay Ranka; Phanisekhar Bv

2012-10-01T23:59:59.000Z

153

Energy Savings Potential of Flexible and Adaptive HVAC Distribution Systems for Office Buildings  

Science Conference Proceedings (OSTI)

It has been understood by architects and engineers that office buildings with easily re-configurable space and flexible mechanical and electrical systems are able to provide comfort that increases worker productivity while using less energy. Raised floors are an example of how fresh air, thermal conditioning, lighting needs, and network access can be delivered in a flexible manner that is not ''embedded'' within the structure. What are not yet documented is how well these systems perform and how much energy they can save. This area is being investigated in phased projects of the 21st Century Research Program of the Air-conditioning and Refrigeration Technology Institute. For the initial project, research teams at the Center for Building Performance and Diagnostics, Pittsburgh, Pennsylvania, and Oak Ridge National Laboratory, Oak Ridge, Tennessee, documented the diversity, performance, and incidence of flexible and adaptive HVAC systems. Information was gathered worldwide from journal and conference articles, case studies, manufactured products and assemblies, and interviews with design professionals. Their report thoroughly describes the variety of system types along with the various design alternatives observed for plenums, diffusers, individual control, and system integration. Many of the systems are illustrated in the report and the authors provide quantitative and qualitative comparisons. Among conclusions regarding key design issues, and barriers to widespread adoption, the authors state that flexible and adaptive HVAC systems, such as underfloor air, perform as well if not better than ceiling-based systems. Leading engineers have become active proponents after their first experience, which is resulting in these flexible and adaptive HVAC systems approaching 10 percent of the new construction market. To encourage adoption of this technology that improves thermal comfort and indoor air quality, follow-on work is required to further document performance. Architects, professional engineers, and commercial real estate developers will benefit from the availability of information that quantifies energy savings, first cost construction differences, and additional operating costs created when office space must be reconfigured to accommodate new tenants.

Loftness, Vivian; Brahme, Rohini; Mondazzi, Michelle; Vineyard, Edward; MacDonald, Michael

2002-06-01T23:59:59.000Z

154

Electricity Distribution System Workshop  

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

Grid Tech Team Grid Tech Team Discussion Summary Electricity Distribution System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Common Themes ...................................................................................................................................... 5 Discussion Topic Tables ............................................................................................................................. 8

155

Fuel Cell Power Model Version 2: Startup Guide, System Designs, and Case Studies. Modeling Electricity, Heat, and Hydrogen Generation from Fuel Cell-Based Distributed Energy Systems  

DOE Green Energy (OSTI)

This guide helps users get started with the U.S. Department of Energy/National Renewable Energy Laboratory Fuel Cell Power (FCPower) Model Version 2, which is a Microsoft Excel workbook that analyzes the technical and economic aspects of high-temperature fuel cell-based distributed energy systems with the aim of providing consistent, transparent, comparable results. This type of energy system would provide onsite-generated heat and electricity to large end users such as hospitals and office complexes. The hydrogen produced could be used for fueling vehicles or stored for later conversion to electricity.

Steward, D.; Penev, M.; Saur, G.; Becker, W.; Zuboy, J.

2013-06-01T23:59:59.000Z

156

ITP Industrial Distributed Energy: Distributed Energy Program...  

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

a combined heat and power (CHP) system. CHP systems can recover and utilize heat from fuel cells, engines, turbines or microturbines to provide useful services such as cooling to...

157

Distributed Generation Study/615 kW Waukesha Packaged System | Open Energy  

Open Energy Info (EERE)

kW Waukesha Packaged System kW Waukesha Packaged System < Distributed Generation Study Jump to: navigation, search Study Location Des Plaines, Illinois Site Description Testing Laboratory Study Type Laboratory Test Technology Internal Combustion Engine Prime Mover Waukesha VGF 36GLD Heat Recovery Systems Sondex PHE-Type SL140-TM-EE-190, Sondex PHE-Type SL140-TM-EE-150, Cain UTR1-810A17.5SSP Fuel Natural Gas System Installer GTI System Enclosure Outdoor System Application Combined Heat and Power Number of Prime Movers 1 Stand-alone Capability None Power Rating 615 kW0.615 MW 615,000 W 615,000,000 mW 6.15e-4 GW 6.15e-7 TW Nominal Voltage (V) 480 Heat Recovery Rating (BTU/hr) 2500000 Cooling Capacity (Refrig/Tons) 90 Origin of Controller 3rd Party Off-the-Shelf Component Integration Factory Integrated

158

Distribution System Losses Evaluation  

Science Conference Proceedings (OSTI)

Currently, there is not an industry standard on how utilities calculate and account for electrical losses and reductions in electric system losses. Computer models used to analyze power flows typically only include the primary components of the distribution system infrastructure. More detailed electric system models can benefit utilities by providing more accurate loss calculations as well as benefits for system planning and engineering. The utility industry could benefit from having a consistent and uni...

2008-12-16T23:59:59.000Z

159

Industrial Distributed Energy: Combined Heat & Power  

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

(DOE) (DOE) Industrial Technology Program (ITP) Industrial Distributed Energy: Combined Heat & Power (CHP) Richard Sweetser Senior Advisor DOE's Mid-Atlantic Clean Energy Application Center 32% Helping plants save energy today using efficient energy management practices and efficient new technologies Activities to spur widespread commercial use of CHP and other distributed generation solutions 10% Manufacturing Energy Systems 33% Industries of the Future R&D addressing top priorities in America's most energy-intensive industries and cross-cutting activities applicable to multiple industrial subsectors 25% Industrial Distributed Energy Industrial Technical Assistance DOE ITP FY'11 Budget: $100M Knowledge development and

160

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

ENVIRONMENTAL IMPACTS OF ALTERNATIVE ENERGY TECHNOLOGIES FORENVIRONMENTAL IMPACTS OF ALTERNATIVE ENERGY TECHNOLOGIES FORSocial Impacts of Alternative Energy Sources Some Material

Balderston, F.

2010-01-01T23:59:59.000Z

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


161

Federal Energy Management Program: Distributed Energy Resources...  

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

Project Implementation to someone by E-mail Share Federal Energy Management Program: Distributed Energy Resources and Combined Heat and Power Project Implementation on Facebook...

162

Federal Energy Management Program: Distributed Energy Resources...  

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

Resources and Combined Heat and Power Contacts to someone by E-mail Share Federal Energy Management Program: Distributed Energy Resources and Combined Heat and Power Contacts on...

163

Industrial Distributed Energy: Combined Heat & Power | Department...  

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

Industrial Distributed Energy: Combined Heat & Power Industrial Distributed Energy: Combined Heat & Power Information about the Department of Energy's Industrial Technologies...

164

Utility Grid-Connected Distributed Power Systems  

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

Grid-Connected Distributed Power Systems National Solar Energy Conference ASES Solar 96 Asheville, NC April 1996 Donald E. OsbornDavid E. Collier Sacramento Municipal Utility...

165

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

ASSESSMENTS VI. ALTERNATIVE ENERGY FUTURES FOR CALIFORNIA--ENVIRONMENTAL IMPACTS OF ALTERNATIVE ENERGY TECHNOLOGIES FORVolume 5, Status of Alternative Energy Technologies, 1977

Authors, Various

2010-01-01T23:59:59.000Z

166

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

~t, Volume 1, 1977. California Energy Resources ConservationAnalysis of the California Energy Industry, p. xvi, Januaryreport to the California Energy Resources Conservation and

Authors, Various

2010-01-01T23:59:59.000Z

167

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

new small dams BIOMASS waste energy farms GEOTHERMAL heatpunish by law people who waste energy none of these other (solid waste and sewage; and 2) energy farm production,

Balderston, F.

2010-01-01T23:59:59.000Z

168

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Conversion to Fuels SOLAR ENERGY . . Characteristics of theor Mechanical Resource Solar Energy Biomass, Land Biomass,unlikely applications for solar energy. of the industrial

Authors, Various

2010-01-01T23:59:59.000Z

169

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Currents Salinity Gradients WIND ENERGY Characteristics ofCOUNTIES THE CALIFORNIA WIND ENERGY RESOURCE . . . . . . . .Principal Investigator, Wind Energy Mission Analys~s, F~nal

Authors, Various

2010-01-01T23:59:59.000Z

170

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

Electrical Energy Consumption in California: Data Collection and Analysis,Electrical Energy Consumers, Journal of Applied Behaviour Analysis

Balderston, F.

2010-01-01T23:59:59.000Z

171

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Electrical Energy Consumption in California: Data Collection and Analysis,Electrical Energy Consumption in California: Data Collection and Analysis,

Authors, Various

2010-01-01T23:59:59.000Z

172

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

resources and from non-renewable energy forms. implicationsrenewable energy forms than they are for fossil or other non-

Authors, Various

2010-01-01T23:59:59.000Z

173

Distributed Energy Resources for Carbon Emissions Mitigation  

E-Print Network (OSTI)

2003. “Gas-Fired Distributed Energy Resource TechnologyATIONAL L ABORATORY Distributed Energy Resources for CarbonFirestone 5128 Distributed Energy Resources for Carbon

Firestone, Ryan; Marnay, Chris

2008-01-01T23:59:59.000Z

174

Distributed Energy Resources Market Diffusion Model  

E-Print Network (OSTI)

International Journal of Distributed Energy Resources, 1 (Gas-Fired Distributed Energy Resources Characterizations.Firestone, R. (2004) Distributed Energy Resources Customer

Maribu, Karl Magnus; Firestone, Ryan; Marnay, Chris; Siddiqui, Afzal S.

2006-01-01T23:59:59.000Z

175

DOE Electricity Distribution System Workshop  

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

DISTRIBUTION SYSTEM WORKSHOP DISTRIBUTION SYSTEM WORKSHOP Mapping Challenges and Opportunities to Help Guide DOE R&D Investments over the Next Five Years Sheraton Crystal City, 1800 Jefferson Davis Hwy, Arlington, Virginia September 24-26, 2012 AGENDA Monday, September 24, 2012 1:00-1:30 Welcome and Introduction to the Grid Tech Team (GTT), Vision, and Framework The GTT synchronizes all grid-related activities across the DOE Dr. Anjan Bose, Grid Tech Team Lead 1:30-1:50 OE Vision, Activities, and Issues Patricia A. Hoffman, Assistant Secretary for the Office of Electricity Delivery and Energy Reliability (OE) 1:50-2:10 EERE Vision, Activities, and Issues Dr. David Danielson, Assistant Secretary for the Office of Energy Efficiency and Renewable Energy (EERE) 2:10-2:40 Open Q&A Rich Scheer,

176

Addressing System Integration Issues Required for the Developmente of Distributed Wind-Hydrogen Energy Systems: Final Report  

DOE Green Energy (OSTI)

Wind generated electricity is a variable resource. Hydrogen can be generated as an energy storage media, but is costly. Advancements in power electronics and system integration are needed to make a viable system. Therefore, the long-term goal of the efforts at the University of North Dakota is to merge wind energy, hydrogen production, and fuel cells to bring emission-free and reliable power to commercial viability. The primary goals include 1) expand system models as a tool to investigate integration and control issues, 2) examine long-term effects of wind-electrolysis performance from a systematic perspective, and 3) collaborate with NREL and industrial partners to design, integrate, and quantify system improvements by implementing a single power electronics package to interface wild AC to PEM stack DC requirements. This report summarizes the accomplishments made during this project.

Mann, M.D; Salehfar, H.; Harrison, K.W.; Dale, N.; Biaku, C.; Peters, A.J.; Hernandez-Pacheco: E.

2008-04-01T23:59:59.000Z

177

Optimal Combination of Distributed Energy System in an Eco-Campus of Japan  

E-Print Network (OSTI)

the Second International Green Energy Conference. This workTHE SECOND INTERNATIONAL GREEN ENERGY CONFERENCE 25-29 JuneTHE SECOND INTERNATIONAL GREEN ENERGY CONFERENCE 25-29 June

Yang, Yongwen; Gao, Weijun; Zhou, Nan; Marnay, Chris

2006-01-01T23:59:59.000Z

178

Optimal Combination of Distributed Energy System in an Eco-Campus of Japan  

E-Print Network (OSTI)

a research of database of energy tariffs, D E R (Distributedresearch of database of energy tariffs, technology cost andand natural g a s tariffs, and end-use energy loads s u c h

Yang, Yongwen; Gao, Weijun; Zhou, Nan; Marnay, Chris

2006-01-01T23:59:59.000Z

179

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

Chairman, Report of the Solar Energy Resource Group, Supplyand E.S. Davis, Solar Energy in Buildings. Implica- tionsMortgage Lending and Solar Energy, 1977 Bender, Tom Living

Balderston, F.

2010-01-01T23:59:59.000Z

180

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

responsible for solving the energy problem. Very Responsibleunions There is no energy problem No one is responsibleT. and John MacTavish. "Energy Problems and Public Beliefs,

Balderston, F.

2010-01-01T23:59:59.000Z

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


181

Integrated Ice Storage/Sprinkler HVAC System Sharply Cuts Energy Costs and Air-Distribution First Costs  

E-Print Network (OSTI)

Integrated ice thermal storage/sprinkler HVAC systems developed and applied by the author in several commercial applications shift a major portion of electric utility demand to cheaper off-peak hours, while also reducing significantly the first cost of distribution ductwork. Savings of up to 80% in primary duct and air handler costs (compared to a traditional all-air HVAC system) partially offset the first cost of ice storage equipment, which in turn permits a 50% reduction in utility energy costs for air conditioning in some facilities. The basic ice storage/sprinkler HVAC system is described as well as optional subsystems, such as cogeneration, that are cost-effective under certain conditions. The system's design parameters, psychrometric process, and thermodynamic characteristics are presented and two installations are described, a 223,000-sq ft shopping center and a 150,000-sq ft, two-story retail store. Reductions in the size and first cost of primary air-handling equipment and ductwork are achieved by distributing a small quantity (0.1 to 0.2 cfm/sq ft) of very dry, 40°F primary air. All dehumidification is handled by the ice-chilled primary air, which is distributed in variable, volume, determined by the space dehumidification requirement, to fan-coil induction terminal units. The primary air is mixed with fan-induced room air in the terminals prior to distribution to the space at a constant volume. The fan-induction terminals contain cooling coils connected to the integrated sprinkler system, which circulates chilled water from the central plant through the coils when additional sensible cooling is required. This chilled water is at a thermodynamically efficient elevated temperature (58-68°F), since it handles sensible cooling load only.

Meckler, G.

1986-01-01T23:59:59.000Z

182

A Globally Distributed System for Job, Data, and Information Handling for High Energy Physics  

SciTech Connect

The computing infrastructures of the modern high energy physics experiments need to address an unprecedented set of requirements. The collaborations consist of hundreds of members from dozens of institutions around the world and the computing power necessary to analyze the data produced surpasses already the capabilities of any single computing center. A software infrastructure capable of seamlessly integrating dozens of computing centers around the world, enabling computing for a large and dynamical group of users, is of fundamental importance for the production of scientific results. Such a computing infrastructure is called a computational grid. The SAM-Grid offers a solution to these problems for CDF and DZero, two of the largest high energy physics experiments in the world, running at Fermilab. The SAM-Grid integrates standard grid middleware, such as Condor-G and the Globus Toolkit, with software developed at Fermilab, organizing the system in three major components: data handling, job handling, and information management. This dissertation presents the challenges and the solutions provided in such a computing infrastructure.

Garzoglio, Gabriele; /DePaul U.

2005-12-01T23:59:59.000Z

183

Distributed Optimization System  

DOE Patents (OSTI)

A search system and method for controlling multiple agents to optimize an objective using distributed sensing and cooperative control. The search agent can be one or more physical agents, such as a robot, and can be software agents for searching cyberspace. The objective can be: chemical sources, temperature sources, radiation sources, light sources, evaders, trespassers, explosive sources, time dependent sources, time independent sources, function surfaces, maximization points, minimization points, and optimal control of a system such as a communication system, an economy, a crane, and a multi-processor computer.

Hurtado, John E. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Robinett, III, Rush D. (Tijeras, NM)

2004-11-30T23:59:59.000Z

184

Optimal Combination of Distributed Energy System in an Eco-Campus of Japan  

E-Print Network (OSTI)

ENERGY CONFERENCE 25-29 June 2006,Oshawa, Ontario, Canada this model, requirement, market information (

Yang, Yongwen; Gao, Weijun; Zhou, Nan; Marnay, Chris

2006-01-01T23:59:59.000Z

185

Final Technical Report: Hawaii Hydrogen Center for Development and Deployment of Distributed Energy Systems  

SciTech Connect

Hydrogen power park experiments in Hawai‘i produced real-world data on the performance of commercialized electrochemical components and power systems integrating renewable and hydrogen technologies. By analyzing the different losses associated with the various equipment items involved, this work identifies the different improvements necessary to increase the viability of these technologies for commercial deployment. The stand-alone power system installed at Kahua Ranch on the Big Island of Hawaii required the development of the necessary tools to connect, manage and monitor such a system. It also helped the electrolyzer supplier to adapt its unit to the stand-alone power system application. Hydrogen fuel purity assessments conducted at the Hawai‘i Natural Energy Institute (HNEI) fuel cell test facility yielded additional knowledge regarding fuel cell performance degradation due to exposure to several different fuel contaminants. In addition, a novel fitting strategy was developed to permit accurate separation of the degradation of fuel cell performance due to fuel impurities from other losses. A specific standard MEA and a standard flow field were selected for use in future small-scale fuel cell experiments. Renewable hydrogen production research was conducted using photoelectrochemical (PEC) devices, hydrogen production from biomass, and biohydrogen analysis. PEC device activities explored novel configurations of ‘traditional’ photovoltaic materials for application in high-efficiency photoelectrolysis for solar hydrogen production. The model systems investigated involved combinations of copper-indium-gallium-diselenide (CIGS) and hydrogenated amorphous silicon (a-Si:H). A key result of this work was the establishment of a robust “three-stage” fabrication process at HNEI for high-efficiency CIGS thin film solar cells. The other key accomplishment was the development of models, designs and prototypes of novel ‘four-terminal’ devices integrating high-efficiency CIGS and a-Si:H with operating features compatible with high-efficiency photoelectrochemical (PEC) water-splitting. The objective of one activity under the hydrogen production from biomass task was to conduct parametric testing of the Pearson gasifier and to determine the effects of gasifier operating conditions on the gas yields and quality. The hydrogen yield from this gasifier was evaluated in a parametric test series over a range of residence times from 0.8 to 2.2 seconds. H2 concentrations as high as 55% (volume) were measured in the product gas at the longer residence times and this corresponds to a hydrogen yield of 90 kg per tonne of bagasse without gas upgrading. The objective of another activity was to develop hot gas clean-up capabilities for the HNEI gasifier test facility to support hydrogen-from-biomass research. The product gas stream at the outlet of the hot gas filter was characterized for concentrations of permanent gas species and contaminants. Biomass feedstock processing activity included a preliminary investigation into methods for processing sugar cane trash at the Puunene Sugar Factory on the island of Maui, Hawaii. The objective of the investigation was to explore treatment methods that would enable the successful use of cane trash as fuel for the production of hydrogen via gasification. Analyses were completed for the technical and economic feasibility of producing biofuel from photosynthetic marine microbes on a commercial scale. Results included estimates for total costs, energy efficiency, and return on investment. The biohydrogen team undertook a comprehensive review of the field and came to what is considered a realistic conclusion. To summarize, continued research is recommended in the fundamentals of the science related to genetic engineering and specific topics to cover knowledge gaps. In the meantime, the team also advocates continued development of related processes which can be linked to pollution control and other real world applications. The extra revenues hydrogen can provide to these multi-product systems can

Rocheleau, Richard E.

2008-09-30T23:59:59.000Z

186

Final Technical Report: Hawaii Hydrogen Center for Development and Deployment of Distributed Energy Systems  

Science Conference Proceedings (OSTI)

Hydrogen power park experiments in Hawai‘i produced real-world data on the performance of commercialized electrochemical components and power systems integrating renewable and hydrogen technologies. By analyzing the different losses associated with the various equipment items involved, this work identifies the different improvements necessary to increase the viability of these technologies for commercial deployment. The stand-alone power system installed at Kahua Ranch on the Big Island of Hawaii required the development of the necessary tools to connect, manage and monitor such a system. It also helped the electrolyzer supplier to adapt its unit to the stand-alone power system application. Hydrogen fuel purity assessments conducted at the Hawai‘i Natural Energy Institute (HNEI) fuel cell test facility yielded additional knowledge regarding fuel cell performance degradation due to exposure to several different fuel contaminants. In addition, a novel fitting strategy was developed to permit accurate separation of the degradation of fuel cell performance due to fuel impurities from other losses. A specific standard MEA and a standard flow field were selected for use in future small-scale fuel cell experiments. Renewable hydrogen production research was conducted using photoelectrochemical (PEC) devices, hydrogen production from biomass, and biohydrogen analysis. PEC device activities explored novel configurations of ‘traditional’ photovoltaic materials for application in high-efficiency photoelectrolysis for solar hydrogen production. The model systems investigated involved combinations of copper-indium-gallium-diselenide (CIGS) and hydrogenated amorphous silicon (a-Si:H). A key result of this work was the establishment of a robust “three-stage” fabrication process at HNEI for high-efficiency CIGS thin film solar cells. The other key accomplishment was the development of models, designs and prototypes of novel ‘four-terminal’ devices integrating high-efficiency CIGS and a-Si:H with operating features compatible with high-efficiency photoelectrochemical (PEC) water-splitting. The objective of one activity under the hydrogen production from biomass task was to conduct parametric testing of the Pearson gasifier and to determine the effects of gasifier operating conditions on the gas yields and quality. The hydrogen yield from this gasifier was evaluated in a parametric test series over a range of residence times from 0.8 to 2.2 seconds. H2 concentrations as high as 55% (volume) were measured in the product gas at the longer residence times and this corresponds to a hydrogen yield of 90 kg per tonne of bagasse without gas upgrading. The objective of another activity was to develop hot gas clean-up capabilities for the HNEI gasifier test facility to support hydrogen-from-biomass research. The product gas stream at the outlet of the hot gas filter was characterized for concentrations of permanent gas species and contaminants. Biomass feedstock processing activity included a preliminary investigation into methods for processing sugar cane trash at the Puunene Sugar Factory on the island of Maui, Hawaii. The objective of the investigation was to explore treatment methods that would enable the successful use of cane trash as fuel for the production of hydrogen via gasification. Analyses were completed for the technical and economic feasibility of producing biofuel from photosynthetic marine microbes on a commercial scale. Results included estimates for total costs, energy efficiency, and return on investment. The biohydrogen team undertook a comprehensive review of the field and came to what is considered a realistic conclusion. To summarize, continued research is recommended in the fundamentals of the science related to genetic engineering and specific topics to cover knowledge gaps. In the meantime, the team also advocates continued development of related processes which can be linked to pollution control and other real world applications. The extra revenues hydrogen can provide to these multi-product systems can

Rocheleau, Richard E.

2008-09-30T23:59:59.000Z

187

AMO Industrial Distributed Energy: Information Resources  

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

Energy Efficiency and Renewable Energy EERE Home | Programs & Offices | Consumer Information Industrial Distributed Energy Search Search Help Industrial Distributed Energy EERE...

188

HVAC Equipment Design Options for Near-Zero-Energy Homes - Scoping Assessment of Radiant Panel Distribution System Options  

Science Conference Proceedings (OSTI)

Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Conventional unitary equipment and system designs have matured to a point where cost-effective, dramatic efficiency improvements that meet near-zero-energy housing (NZEH) goals require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05, ORNL conducted a scoping-level assessment of HVAC system options for NZEH homes (Baxter 2005). That report examined some twenty HVAC and water heating (HVAC/WH) systems in two 1800 ft2 houses--one constructed to Building America Research Benchmark standards and one a prototype NZEH. Both centrally ducted and two-zone systems were examined in that study. The highest scoring options using the ranking criteria described in that report were air-source and ground-source integrated heat pumps (IHP), and these were selected by DOE for further development. Among the feedback received to the FY05 report was a comment that systems using radiant panel (floor or ceiling) distribution options were not included among the system examined. This present report describes an assessment of a few such radiant panel systems under the same analysis and ranking criteria used in Baxter (2005). The rankings of the radiant system options reported herein are based on scoring by the team of building equipment researchers at ORNL. It is DOE's prerogative to revisit the criteria and obtain scoring from additional perspectives as part of its decision making process. If the criteria change, the ORNL team will be happy to re-score.

Baxter, Van David [ORNL

2007-06-01T23:59:59.000Z

189

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Institute, Energy Primer: Oil and Gas Past and Future, Randreliance upon depleting oil and gas to other energy formsThe state relies heavily on oil and gas, with oil presently

Authors, Various

2010-01-01T23:59:59.000Z

190

How the Number and Placement of Sensors Controlling Room Air Distribution Systems Affect Energy Use and Comfort  

E-Print Network (OSTI)

This study assesses the impact of sensor number and placement on the energy needed to condition a typical office using several likely variants of an underfloor air distribution system (UFAD). The study uses an empirical-based room stratification model developed from full-scale tests of UFAD systems. Annual energy consumption is calculated for an interior zone using outside air temperature bin data. The comfort criteria are taken from ASHRAE standard 55-92. The simulations indicate that there are benefits derived from using more than one temperature sensor to control conditions in the occupied zone of a room. Among these are: 1. By adjusting both supply air temperature and volume to maintain the maximum allowable thermal gradient in the occupied (lower) part of the room, an optimal supply air condition can reduce energy use (relative to the best arrangement of a single sensor) while maintaining comfort; 2. Discomfort caused by stratification can be detected by having one of the sensors located at foot level; 3. For the simulated UFAD interior zone of a typical office building in Sacramento, an overall energy saving of 8%/24% (VAV/CAV respectively) can be achieved when two sensors as opposed to one are used to control room conditions.

Wang, D.; Arens, E.; Webster, T.; Shi, M.

2002-01-01T23:59:59.000Z

191

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

natural gas or solar energy. Thus, the building code not only includes building design and construction regulations;

Balderston, F.

2010-01-01T23:59:59.000Z

192

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

alternative energy sources, lifestyle changes, and the relative emphasis given to supply and/or demand solutions.

Balderston, F.

2010-01-01T23:59:59.000Z

193

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

area at 12% efficiency, comparable to solar thermal electricsolar-electric system can achieve the thermalsolar heat is o These solar thermal systems

Balderston, F.

2010-01-01T23:59:59.000Z

194

Energy Storage Solutions for Wind Generator Connected Distribution Systems in Rural Ontario.  

E-Print Network (OSTI)

??Environmental awareness and uncertainty about continued supply of fossil fuel has given rise to the renewable energy movement. Wind based power generation has been at… (more)

Rahman, Mohammed Nahid

2009-01-01T23:59:59.000Z

195

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Other Solar Technologies HYDROELECTRIC AND PUMPED STORAGEand Solar Thermal Hydroelectric Power Geothermal . Land UseOcean Wind Geothermal Hydroelectric Ocean Energy Fossil

Authors, Various

2010-01-01T23:59:59.000Z

196

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

nuclear energy, coal and oil shale. There is a considerablestates in the case of oil shale and coal), then Californiaby conversion of coal or oil shale-- with conversion

Authors, Various

2010-01-01T23:59:59.000Z

197

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

to generate electricity, 2) pumped storage of water from anor stream, the impacts of pumped storage facili- ties areenvironmental impact of pumped storage without the energy

Balderston, F.

2010-01-01T23:59:59.000Z

198

Estimating Energy and Water Losses in Residential Hot Water Distribution Systems  

E-Print Network (OSTI)

by showers, faucets, and dishwashers. (Actual leaks of hotdraws for sinks and dishwashers may not waste water, from anheat the water. For dishwashers, not only is energy wasted

Lutz, James

2005-01-01T23:59:59.000Z

199

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

Space Conditioning Systems in Northern California: A Brief Survey, LBL-5229, August 1976. Jet Propulsion

Balderston, F.

2010-01-01T23:59:59.000Z

200

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Water Supply and Demand, 1972 and 2025 California Biomasssupply, and the fact that most crops are grown to optimize fruit or grain yield rather than total biomass (Biomass, 2025 Potential of Various Ocean Energy Resources for California California Wind Energy, by Region Estimates of California's Conventional Crude Oil Supply

Authors, Various

2010-01-01T23:59:59.000Z

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


201

Energy Storage and Distributed Resources  

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

diagram of molecular structure, spectrocscopic data, low-swirl flame diagram of molecular structure, spectrocscopic data, low-swirl flame Energy Storage and Distributed Resources Energy Storage and Distributed Resources application/pdf icon esdr-org-chart-03-2013.pdf EETD researchers in the energy storage and distributed resources area conduct R&D and develops technologies that provide the electricity grid with significant storage capability for energy generated from renewable sources; real-time monitoring and response technologies for the "smart grid" to optimize energy use and communication between electricity providers and consumers; and technologies for improved electricity distribution reliability. Their goal is to identify and develop technologies, policies and strategies to enable a shift to renewable energy sources at $1 per watt for a

202

Quality monitored distributed voting system  

DOE Patents (OSTI)

A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system. 6 figs.

Skogmo, D.

1997-03-18T23:59:59.000Z

203

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

by conversion of coal or oil shale-- with conversionof these conversion from oil shale or coal. power, coal andkelp use in the A case Oil shale renewable or fossil energy

Authors, Various

2010-01-01T23:59:59.000Z

204

Estimation of fatigue and extreme load distributions from limited data with application to wind energy systems.  

SciTech Connect

An estimate of the distribution of fatigue ranges or extreme loads for wind turbines may be obtained by separating the problem into two uncoupled parts, (1) a turbine specific portion, independent of the site and (2) a site-specific description of environmental variables. We consider contextually appropriate probability models to describe the turbine specific response for extreme loads or fatigue. The site-specific portion is described by a joint probability distribution of a vector of environmental variables, which characterize the wind process at the hub-height of the wind turbine. Several approaches are considered for combining the two portions to obtain an estimate of the extreme load, e.g., 50-year loads or fatigue damage. We assess the efficacy of these models to obtain accurate estimates, including various levels of epistemic uncertainty, of the turbine response.

Fitzwater, LeRoy M. (Stanford University, Stanford, CA)

2004-01-01T23:59:59.000Z

205

Building Distributed Energy Performance Optimization for China...  

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

Distributed Energy Performance Optimization for China - a Regional Analysis of Building Energy Costs and CO2 Emissions Title Building Distributed Energy Performance Optimization...

206

Efficient Communication Interfaces for Distributed Energy Resources  

Science Conference Proceedings (OSTI)

The IEC 61850 standard originally was developed for the substation automation. During the past years it was adapted for the integration of distributed energy resources into communication networks, however, with specific requirements. Many small and midsize ... Keywords: Client-Server, Data Modeling, Distributed Systems, Information and Communication Technologies, Networks

Heinz Frank; Sidonia Mesentean

2010-04-01T23:59:59.000Z

207

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

Systems . District Solar Heating Biomass Conversion WindPacific Regional Solar Heating Handbook, San Francisco,Institutions About Solar Heating in the Home. Draft Report

Balderston, F.

2010-01-01T23:59:59.000Z

208

DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I  

E-Print Network (OSTI)

Water Heating . Passive Solar Heating of Buildings. SolarSite Solar Systems District Solar Heating Biomass ConversionBalcom, Pacific Regional Solar Heating Handbook, available

Authors, Various

2010-01-01T23:59:59.000Z

209

Optimal Model of Distributed Energy System by Using GAMS and Case Study  

E-Print Network (OSTI)

heat efficiency, power generation efficiency has morefor regular large-scale power generation system, Distributedof GAMS 3) Total power generation only supply to Kitakyushu

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Xuan, Ji; Zhou, Nan; Marnay, Chris

2005-01-01T23:59:59.000Z

210

Optimal Model of Distributed Energy System by Using GAMS and Case Study  

E-Print Network (OSTI)

is economical when electricity price increases or gas pricea system on the different electricity price, gas price andgas price and electricity price, etc) and 1) The benefit of

Yang, Yongwen; Gao, Weijun; Ruan, Yingjun; Xuan, Ji; Zhou, Nan; Marnay, Chris

2005-01-01T23:59:59.000Z

211

Distributed Energy Systems in California's Future: A Preliminary Report Volume 2  

E-Print Network (OSTI)

Hot-Water Heating and Space Conditioning Systems in Northernprocess heating, and space conditioning designed to utilizeprocesses or for space conditioning. nologies refer to the

Balderston, F.

2010-01-01T23:59:59.000Z

212

Distributed Energy Resources and Management of Future Distribution  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute's (EPRI's) Smart Grid demonstration initiative is a collaborative research effort focused on the design, implementation, and assessment of field demonstrations to address challenges with integrated distributed resources in grid and market operations as well as system planning. The main objective of this study is to identify approaches to interoperability and integration that can be used on a systemwide scale to help standardize the use of distributed energy resources...

2010-03-25T23:59:59.000Z

213

A review of agent-based models for forecasting the deployment of distributed generation in energy systems  

Science Conference Proceedings (OSTI)

Agent-based models are seeing increasing use in the study of distributed generation (DG) deployment. Researchers and decision makers involved in the implementation of DG have been lacking a concise overview of why they should consider using agent-based ... Keywords: agent-based modeling, consumer behavior, distributed generation, energy forecasting, product deployment

Jason G. Veneman; M. A. Oey; L. J. Kortmann; F. M. Brazier; L. J. de Vries

2011-06-01T23:59:59.000Z

214

Optimal Combination of Distributed Energy System in an Eco-Campus of Japan  

E-Print Network (OSTI)

, and end-use energy loads such as space heating, cooling, hot water, and electricity only. E-GAMS reports in 2003. Figure 2 shows the measured result of the electricity, cooling, space heating, and hot water-GAMS. It is itemized by natural gas engine (GE), gas turbine (GT), micro turbine (MT), fuel cell (FC), and photovoltaic

215

AMO Industrial Distributed Energy: Clean Energy Application Centers  

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

Energy Efficiency and Renewable Energy EERE Home | Programs & Offices | Consumer Information Industrial Distributed Energy Search Search Help Industrial Distributed Energy EERE...

216

EPRI Framework for Evaluating Energy Storage Within Distribution Systems: Energy Storage Integration Council (ESIC) Application Working Group (WG1) - Reference Guide  

Science Conference Proceedings (OSTI)

Distribution planners now face the challenge of accurately including the impact and value of energy storage in distribution planning. The most common planning procedures rely heavily on a static power flow of a selected loading condition, usually the peak power demand forecasted for a selected planning period. This does not give an accurate representation of variable resources, such as solar photovoltaic (PV) generation and limited duration distributed energy resources like energy storage. There is ...

2013-12-22T23:59:59.000Z

217

50 kW Power Block for Distributed Energy Applications  

Distributed energy (DE) systems have begun to make a significant impact on energy supply and will certainly affect energy needs in the future. These systems include, but are not limited to, photovoltaics (PV), wind turbines, micro-turbines, fuel ...

218

Energy distribution of the Einstein-Klein-Gordon system for a static spherically symmetric spacetime in (2+1)-dimensions  

E-Print Network (OSTI)

We use Moeller's energy-momentum complex in order to explicitly compute the energy and momentum density distributions for an exact solution of Einstein's field equations with a negative cosmological constant minimally coupled to a static massless scalar field in a static, spherically symmetric background in (2+1)-dimensions.

I. Radinschi; Th. Grammenos

2005-08-01T23:59:59.000Z

219

Laser Spark Distribution and Ignition System  

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

Spark Distribution and Ignition System Spark Distribution and Ignition System Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implement- ing United States Patent Number 7,421,166 entitled "Laser Spark Distribution and Ignition System." Disclosed in this patent is NETL's laser spark distribution and ignition system, which reduces the high-power optical requirements normally needed for such a system by using optical fibers to deliver low-peak-energy pumping pulses to a laser amplifier or laser oscillator. Laser spark generators then produce a high-peak-power laser spark from a single low power pulse. The system has ap- plications in natural gas fueled reciprocating engines, turbine combustors, explosives, and laser induced breakdown spectroscopy diagnostic sensors.

220

Estimating Reliability of Critical Distribution System Components  

Science Conference Proceedings (OSTI)

EPRI has been developing methods for distribution planning since 1992. At that time, research directed at the concept of distributed resources begun by EPRI, Pacific Gas & Electric, and the National Renewable Energy Laboratory led to further consideration of distribution planning in general. More recently this analysis has raised the issue of aging of the distribution infrastructure and how to optimize maintenance and replacement of aging systems. This report discusses: 1) research into the prediction of...

2003-01-30T23:59:59.000Z

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


221

Agent-Based Control Framework for Distributed Energy Resources Microgrids  

Science Conference Proceedings (OSTI)

Distributed energy resources (DERs) provide many benefits for the electricity users and utilities. However, the electricity distribution system traditionally was not designed to accommodate active power generation and storage at the distribution level. ...

Zhenhua Jiang

2006-12-01T23:59:59.000Z

222

Final Technical Report: Hawaii Hydrogen Center for Development and Deployment of Distributed Energy Systems  

DOE Green Energy (OSTI)

The biohydrogen team undertook a comprehensive review of the field and came to what is considered a realistic conclusion. To summarize, continued research is recommended in the fundamentals of the science related to genetic engineering and specific topics to cover knowledge gaps. In the meantime, the team also advocates continued development of related processes which can be linked to pollution control and other real world applications. The extra revenues hydrogen can provide to these multi-product systems can

Rocheleau, Richard E.

2008-09-30T23:59:59.000Z

223

Strategic Intelligence Update - Energy Storage & Distributed Generation: December 2010  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage especially has the ability to improve the value of intermittent renewable resources. Smaller-scale distributed energy storage, on the order of a ...

2010-12-14T23:59:59.000Z

224

Strategic Intelligence Update: Energy Storage and Distributed Generation  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage especially has the ability to improve the value of intermittent renewable resources. Smaller-scale distributed energy storage, on the order of a ...

2010-08-05T23:59:59.000Z

225

Strategic Intelligence Update: Energy Storage and Distributed Generation  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage especially has the ability to improve the value of intermittent renewable resources. Smaller-scale distributed energy storage, on the order of a ...

2010-10-15T23:59:59.000Z

226

Strategic Intelligence Update: Energy Storage and Distributed Generation  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage especially has the ability to improve the value of intermittent renewable resources. Smaller scale distributed energy storage, on the order of a ...

2010-04-01T23:59:59.000Z

227

Distribution Categories: Magnetic Fusion Energy (UC-20)  

E-Print Network (OSTI)

Distribution Categories: Magnetic Fusion Energy (UC-20) MFE--Plasma Systems (UC-20a) MFE Temperature Response 4-7 4.6 Thermal Storage Requirements 4-16 4.6.1 Pressurized Water/Steam System 4-19 4

Harilal, S. S.

228

Federal Energy Management Program: Best Management Practice: Distribution  

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

Distribution System Audits, Leak Detection, and Repair to someone Distribution System Audits, Leak Detection, and Repair to someone by E-mail Share Federal Energy Management Program: Best Management Practice: Distribution System Audits, Leak Detection, and Repair on Facebook Tweet about Federal Energy Management Program: Best Management Practice: Distribution System Audits, Leak Detection, and Repair on Twitter Bookmark Federal Energy Management Program: Best Management Practice: Distribution System Audits, Leak Detection, and Repair on Google Bookmark Federal Energy Management Program: Best Management Practice: Distribution System Audits, Leak Detection, and Repair on Delicious Rank Federal Energy Management Program: Best Management Practice: Distribution System Audits, Leak Detection, and Repair on Digg Find More places to share Federal Energy Management Program: Best

229

Small-Signal Analysis of Hybrid Distributed Generation System with HVDC-Link and Energy Storage Elements  

Science Conference Proceedings (OSTI)

A small-signal analysis of isolated autonomous hybrid system with high voltage direct current link (HVDC) or high voltage alternating current (HVAC) line for different energy storage combinations is proposed in this paper. The hybrid systems supplying ...

P. K. Ray; S. R. Mohanty; Nand Kishor; A. Mohanty

2009-12-01T23:59:59.000Z

230

Gossiping in distributed systems  

E-Print Network (OSTI)

Exchange of information between various nodes in a distributed network can be useful to utilize the available resources effectively. Gossiping algorithms can be used for this purpose. We begin with a survey of various gossiping schemes for different types of network topologies. Two types of gossiping techniques have traditionally been studied and used: (i) schemes in which there is an initiator to start the algorithm and (ii) sch emes without an initiator. These are again sub-divided into two classes: (i) each node knowing the entire graph of the network and (ii) each node knowing only its neighbors. In the schemes with an initiator, the leader initiates the algorithm and subsequently other nodes in the system participate in the algorithm when they are told to do so by a node which already participates in the algorithm. Assuming that each node knows only its neighbors, we propose and implement a gossiping scheme which can compromise message complexity with the time taken to reach consensus. This scheme assumes that one of the nodes is the initiator. We also propose a method for gossiping in an arbitrary graph without an initiator where nodes communicate asynchronously using timeouts.

Penubothu, Muralidhar V

1994-01-01T23:59:59.000Z

231

Efficient thermal energy distribution in commercial buildings...  

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

Efficient thermal energy distribution in commercial buildings -- Final Report Title Efficient thermal energy distribution in commercial buildings -- Final Report Publication Type...

232

Measuring advances in HVAC distribution system designs  

Science Conference Proceedings (OSTI)

Substantial commercial building energy savings have been achieved by improving the performance of the HVAC distribution system. The energy savings result from distribution system design improvements, advanced control capabilities, and use of variable-speed motors. Yet, much of the commercial building stock remains equipped with inefficient systems. Contributing to this is the absence of a definition for distribution system efficiency as well as the analysis methods for quantifying performance. This research investigates the application of performance indices to assess design advancements in commercial building thermal distribution systems. The index definitions are based on a first and second law of thermodynamics analysis of the system. The second law or availability analysis enables the determination of the true efficiency of the system. Availability analysis is a convenient way to make system efficiency comparisons since performance is evaluated relative to an ideal process. A TRNSYS simulation model is developed to analyze the performance of two distribution system types, a constant air volume system and a variable air volume system, that serve one floor of a large office building. Performance indices are calculated using the simulation results to compare the performance of the two systems types in several locations. Changes in index values are compared to changes in plant energy, costs, and carbon emissions to explore the ability of the indices to estimate these quantities.

Franconi, Ellen

1998-07-01T23:59:59.000Z

233

Measuring Advances in HVAC Distribution System Design  

SciTech Connect

Substantial commercial building energy savings have been achieved by improving the performance of the HV AC distribution system. The energy savings result from distribution system design improvements, advanced control capabilities, and use of variable-speed motors. Yet, much of the commercial building stock remains equipped with inefficient systems. Contributing to this is the absence of a definition for distribution system efficiency as well as the analysis methods for quantifying performance. This research investigates the application of performance indices to assess design advancements in commercial building thermal distribution systems. The index definitions are based on a first and second law of thermodynamics analysis of the system. The second law or availability analysis enables the determination of the true efficiency of the system. Availability analysis is a convenient way to make system efficiency comparisons since performance is evaluated relative to an ideal process. A TRNSYS simulation model is developed to analyze the performance of two distribution system types, a constant air volume system and a variable air volume system, that serve one floor of a large office building. Performance indices are calculated using the simulation results to compare the performance of the two systems types in several locations. Changes in index values are compared to changes in plant energy, costs, and carbon emissions to explore the ability of the indices to estimate these quantities.

Franconi, E.

1998-05-01T23:59:59.000Z

234

NREL: Energy Systems Integration - Energy Systems Integration...  

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

Energy Systems Integration Facility NREL's Energy Systems Integration Facility Garners LEED Platinum View the NREL Press Release. NREL's multistory Energy Systems Integration...

235

ANN - based distribution system reconfiguration  

SciTech Connect

This paper describes an Artificial Neural Network (ANN) - based distribution system reconfiguration scheme to reduce system loss. The ANN is trained for different load levels and different network topologies. The proposed scheme has been tested using a 38 - bus distribution system. The results are very promising.

Momoh, J.A.; Wang, Yanchun [Howard Univ., Washington, DC (United States). Electrical Engineering Dept.; Rizy, D.T. [Oak Ridge National Lab., TN (United States)

1997-08-01T23:59:59.000Z

236

Technical and System Requirements for Advanced Distribution Automation  

Science Conference Proceedings (OSTI)

Traditional distribution systems were designed to perform one function: distribute electrical energy to end-users. Advanced Distribution Automation (ADA) is a concept for a fully controllable and flexible distribution system that will facilitate the exchange of both electrical energy and information between participants and system components. This report presents background information on distribution automation technologies and develops a roadmap to achieve the ADA systems required for future power deli...

2004-06-09T23:59:59.000Z

237

Distributed Energy Resources Market Diffusion Model  

E-Print Network (OSTI)

8] Energy Efficiency Standards Group. (2005) Tariff Analysistariffs and DER technology cost and performance data to run the Distributed Energy

Maribu, Karl Magnus; Firestone, Ryan; Marnay, Chris; Siddiqui, Afzal S.

2006-01-01T23:59:59.000Z

238

Distribution Management Systems Planning Guide  

Science Conference Proceedings (OSTI)

No portion of the electric power grid has been impacted more significantly by the Smart Grid concept than the electric distribution system. In the past, the distribution portion of the system received little attention compared to transmission and generation systems unless the lights went out. Since the dawn of the smart grid era, many electric distribution utilities have transitioned from (or are in the process of transitioning from) a mostly manual, paper-driven business process to electronic ...

2013-03-22T23:59:59.000Z

239

A reliability assessment methodology for distribution systems with distributed generation  

E-Print Network (OSTI)

Reliability assessment is of primary importance in designing and planning distribution systems that operate in an economic manner with minimal interruption of customer loads. With the advances in renewable energy sources, Distributed Generation (DG), is forecasted to increase in distribution networks. The study of reliability evaluation of such networks is a relatively new area. This research presents a new methodology that can be used to analyze the reliability of such distribution systems and can be applied in preliminary planning studies for such systems. The method uses a sequential Monte Carlo simulation of the distribution systemÂ?s stochastic model to generate the operating behavior and combines that with a path augmenting Max flow algorithm to evaluate the load status for each state change of operation in the system. Overall system and load point reliability indices such as hourly loss of load, frequency of loss of load and expected energy unserved can be computed using this technique. On addition of DG in standby mode of operation at specific locations in the network, the reliability indices can be compared for different scenarios and strategies for placement of DG and their capacities can be determined using this methodology.

Duttagupta, Suchismita Sujaya

2003-05-01T23:59:59.000Z

240

AMO Industrial Distributed Energy: About Industrial Distributed...  

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

potential to reduce greenhouse gas (GHG) emissions through energy efficiency and fossil fuel displacement by using alternative fuels and capturing waste energy streams Providing...

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


241

Strategic Intelligence Update: Energy Storage & Distributed Generation, November 2012  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy ...

2012-11-28T23:59:59.000Z

242

Strategic Intelligence Update: Energy Storage and Distributed Generation, June 2013  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades.  Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy ...

2013-06-28T23:59:59.000Z

243

Strategic Intelligence Update: Distributed Generation & Energy Storage, 1st Newsletter  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Energy storage at megawatt-hour scales can be used to enable generators to better follow load and stabilize transmission voltage and frequency. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage e...

2008-06-11T23:59:59.000Z

244

Strategic Intelligence Update: Energy Storage & Distributed Generation, December 2011  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2011-12-14T23:59:59.000Z

245

Strategic Intelligence Update: Energy Storage & Distributed Generation — March 2011  

Science Conference Proceedings (OSTI)

Energy Storage and Distributed Generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2011-03-22T23:59:59.000Z

246

Strategic Intelligence Update: Energy Storage & Distributed Generation— May 2011  

Science Conference Proceedings (OSTI)

Energy Storage and Distributed Generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2011-05-26T23:59:59.000Z

247

Strategic Intelligence Update: Energy Storage & Distributed Generation, September 2011  

Science Conference Proceedings (OSTI)

Energy storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2011-10-03T23:59:59.000Z

248

Strategic Intelligence Update: Energy Storage & Distributed Generation, September 2012  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades.  Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy ...

2012-09-27T23:59:59.000Z

249

Strategic Intelligence Update: Distributed Generation & Energy Storage, December 2008  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Energy storage at megawatt-hour scales can be used to enable generators to better follow load and stabilize transmission voltage and frequency. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage e...

2008-12-12T23:59:59.000Z

250

Strategic Intelligence Update: Energy Storage and Distributed Generation, September 2013  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy ...

2013-09-27T23:59:59.000Z

251

Strategic Intelligence Update: Energy Storage and Distributed Generation  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage and by ...

2011-08-08T23:59:59.000Z

252

Strategic Intelligence Update: Energy Storage and Distributed Generation, November 2013  

Science Conference Proceedings (OSTI)

Energy Storage and distributed generation technologies add value to a wide range of applications within the electric utility enterprise. Both energy storage and distributed generation systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage has the ability to improve the value of intermittent renewable resources and to provide multiple benefit streams through energy arbitrage ...

2013-11-25T23:59:59.000Z

253

Electricity Distribution System Workshop  

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

Discussion Summary Discussion Summary Electricity Transmission System Workshop 1 Grid Tech Team Discussion Summary Electricity Transmission System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Synthesized Challenges ............................................................................................................................. 5

254

LBNL -52753 Distributed Energy Resources in Practice  

E-Print Network (OSTI)

LBNL -52753 Distributed Energy Resources in Practice: A Case Study Analysis and Validation of LBNL Energy, Distributed Energy and Electric Reliability Program of the U.S. Department of Energy under-52753 Distributed Energy Resources in Practice: A Case Study Analysis and Validation of LBNL's Customer

255

System Size, Energy and Centrality Dependence of Pseudorapidity Distributions of Charged Particles in Relativistic Heavy Ion Collisions  

E-Print Network (OSTI)

We present the first measurements of the pseudorapidity distribution of primary charged particles in Cu+Cu collisions as a function of collision centrality and energy, \\sqrtsnn = 22.4, 62.4 and 200 GeV, over a wide range of pseudorapidity, using the PHOBOS detector. Making a global comparison of Cu+Cu and Au+Au results, we find that the total number of produced charged particles and the rough shape (height and width) of the pseudorapidity distributions are determined by the number of nucleon participants. More detailed studies reveal that a more precise matching of the shape of the Cu+Cu and Au+Au pseudorapidity distributions over the full range of pseudorapidity occurs for the same Npart/2A value rather than the same Npart value. In other words, it is the collision geometry rather than just the number of nucleon participants that drives the detailed shape of the pseudorapidity distribution and its centrality dependence at RHIC energies.

B. Alver; B. B. Back; M. D. Baker; M. Ballintijn; D. S. Barton; R. R. Betts; R. Bindel; W. Busza; Z. Chai; V. Chetluru; E. García; T. Gburek; K. Gulbrandsen; J. Hamblen; I. Harnarine; C. Henderson; D. J. Hofman; R. S. Hollis; R. Ho?y?ski; B. Holzman; A. Iordanova; J. L. Kane; P. Kulinich; C. M. Kuo; W. Li; W. T. Lin; C. Loizides; S. Manly; A. C. Mignerey; R. Nouicer; A. Olszewski; R. Pak; C. Reed; E. Richardson; C. Roland; G. Roland; J. Sagerer; I. Sedykh; C. E. Smith; M. A. Stankiewicz; P. Steinberg; G. S. F. Stephans; A. Sukhanov; A. Szostak; M. B. Tonjes; A. Trzupek; G. J. van Nieuwenhuizen; S. S. Vaurynovich; R. Verdier; G. I. Veres; P. Walters; E. Wenger; D. Willhelm; F. L. H. Wolfs; B. Wosiek; K. Wo?niak; S. Wyngaardt; B. Wys?ouch

2007-09-25T23:59:59.000Z

256

Thermal distribution systems in commercial buildings  

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

Thermal distribution systems in commercial buildings Thermal distribution systems in commercial buildings Title Thermal distribution systems in commercial buildings Publication Type Journal Article LBNL Report Number LBNL-51860 Year of Publication 2003 Authors Diamond, Richard C., Craig P. Wray, Darryl J. Dickerhoff, Nance Matson, and Duo Wang Start Page Chapter Abstract Previous research suggests that HVAC thermal distribution systems in commercial buildings suffer from thermal losses, such as those caused by duct air leakage and poor duct location. Due to a lack of metrics and data showing the potentially large energy savings from reducing these losses, the California building industry has mostly overlooked energy efficiency improvements in this area. The purpose of this project is to obtain the technical knowledge needed to properly measure and understand the energy efficiency of these systems. This project has three specific objectives: to develop metrics and diagnostics for determining system efficiencies, to develop design and retrofit information that the building industry can use to improve these systems, and to determine the energy impacts associated with duct leakage airflows in an existing large commercial building. The primary outcome of this project is the confirmation that duct leakage airflows can significantly impact energy use in large commercial buildings: our measurements indicate that adding 15% duct leakage at operating conditions leads to an increase in fan power of about 25 to 35%. This finding is consistent with impacts of increased duct leakage airflows on fan power that have been predicted by previous simulations. Other project outcomes include the definition of a new metric for distribution system efficiency, the demonstration of a reliable test for determining duct leakage airflows, and the development of new techniques for duct sealing. We expect that the project outcomes will lead to new requirements for commercial thermal distribution system efficiency in future revisions of California's Title 24.

257

Laser Spark Distribution and Ignition System  

Disclosed in this patent is NETL’s laser spark distribution and ignition system, which reduces the high-power optical requirements normally needed for such a system by using optical fibers to deliver low-peak-energy pumping pulses to a laser amplifier ...

258

IEEE TRANSACTIONS ON ENERGY CONVERSION, 2006 1 Distributed Control Agents Approach to Energy  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON ENERGY CONVERSION, 2006 1 Distributed Control Agents Approach to Energy a new scheme for an energy management system in the form of distributed control agents. The control and a minimum amount of communication. A case study using the distributed agents within a multilayer system

Lai, Hong-jian

259

LBNL-60590 JART Distributed energy resources market  

E-Print Network (OSTI)

LBNL-60590 JART Distributed energy resources market diffusion model Karl Magnus Maribua , Ryan M by the Office of Electricity Delivery and Energy Reliability, Distributed Energy Program of the U.S. Department Policy 35 (2007) 4471­4484 Distributed energy resources market diffusion model Karl Magnus Maribua

260

Distribution System Analysis Tools for Studying High Penetration of PV  

E-Print Network (OSTI)

Distribution System Analysis Tools for Studying High Penetration of PV with Grid Support Features Electric Energy System #12;#12;Distribution System Analysis Tools for Studying High Penetration of PV project titled "Distribution System Analysis Tools for Studying High Penetration of PV with Grid Support

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


261

Market Driven Distributed Energy Storage Requirements for Load Management Applications  

Science Conference Proceedings (OSTI)

Electric energy storage systems are an enabling technology that could help meet the needs of electric utility by managing peak energy demands, helping shift the peak loads to off peak hours and improving the load factor of the electric distribution system. Applications of distributed energy storage systems (DESS) could also provide power quality and reliability benefits to customers and to the electric system. EPRI collaborated with several investor owned utilities to conduct a study to understand the te...

2007-04-18T23:59:59.000Z

262

Strategy Guideline: Compact Air Distribution Systems  

SciTech Connect

This Strategy Guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. Traditional systems sized by 'rule of thumb' (i.e., 1 ton of cooling per 400 ft2 of floor space) that 'wash' the exterior walls with conditioned air from floor registers cannot provide appropriate air mixing and moisture removal in low-load homes. A compact air distribution system locates the HVAC equipment centrally with shorter ducts run to interior walls, and ceiling supply outlets throw the air toward the exterior walls along the ceiling plane; alternatively, high sidewall supply outlets throw the air toward the exterior walls. Potential drawbacks include resistance from installing contractors or code officials who are unfamiliar with compact air distribution systems, as well as a lack of availability of low-cost high sidewall or ceiling supply outlets to meet the low air volumes with good throw characteristics. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

Burdick, A.

2013-06-01T23:59:59.000Z

263

NREL: Energy Analysis - Electric Infrastructure Systems Technology...  

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

Technology Analysis NREL's energy analysis supports distribution and interconnection R&D, which is responsible for distributed resources' system integration. Industrial...

264

On False Data Injection Attacks against Distributed Energy Routing in Smart Grid  

Science Conference Proceedings (OSTI)

Smart Grid is a new type of energy-based cyber physical system (CPS) that will provide reliable, secure, and efficient energy transmission and distribution. The way to secure the distributed energy routing process that efficiently utilizes the distributed ... Keywords: Smart grid, Distributed energy routing, False data injection attacks, Energy distribution

Jie Lin; Wei Yu; Xinyu Yang; Guobin Xu; Wei Zhao

2012-04-01T23:59:59.000Z

265

Development of an Integrated Distribution Management System  

Science Conference Proceedings (OSTI)

This final report details the components, functionality, costs, schedule and benefits of developing an Integrated Distribution Management System (IDMS) for power distribution system operation. The Distribution Automation (DA) and Supervisory Control and Data Acquisition (SCADA) systems used by electric power companies to manage the distribution of electric power to retail energy consumers are vital components of the Nation’s critical infrastructure. Providing electricity is an essential public service and a disruption in that service, if not quickly restored, could threaten the public safety and the Nation’s economic security. Our Nation’s economic prosperity and quality of life have long depended on the essential services that utilities provide; therefore, it is necessary to ensure that electric utilities are able to conduct their operations safely and efficiently. A fully integrated technology of applications is needed to link various remote sensing, communications and control devices with other information tools that help guide Power Distribution Operations personnel. A fully implemented IDMS will provide this, a seamlessly integrated set of applications to raise electric system operating intelligence. IDMS will enhance DA and SCADA through integration of applications such as Geographic Information Systems, Outage Management Systems, Switching Management and Analysis, Operator Training Simulator, and other Advanced Applications, including unbalanced load flow and fault isolation/service restoration. These apps are capable of utilizing and obtaining information from appropriately installed DER, and by integrating disparate systems, the Distribution Operators will benefit from advanced capabilities when analyzing, controlling and operating the electric system.

Schatz, Joe E.

2010-10-20T23:59:59.000Z

266

The State of Distributed Energy Storage Technology and the Stem...  

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

State of Distributed Energy Storage Technology and the Stem Energy System Speaker(s): Ben Kearns David Erhart Date: March 1, 2013 - 12:00pm Location: 90-3122 Seminar HostPoint of...

267

The representation of rainfall drop-size distribution and kinetic energy Hydrology and Earth System Sciences, 8(5), 10011007 (2004) EGU  

E-Print Network (OSTI)

The representation of rainfall drop-size distribution and kinetic energy 1001 Hydrology and Earth-size distribution and kinetic energy Neil I. Fox Department of Soil, Environmental and Atmospheric Sciences373 Mc component of drop velocity. Keywords: drop-size distribution, drop kinetic energy, soil erosion Introduction

Paris-Sud XI, Université de

268

Energy Distribution of a Charged Regular  

E-Print Network (OSTI)

We calculate the energy distribution of a charged regular black hole by using the energy-momentum complexes of Einstein and Møller.

Black Hole; I. Radinschi

2000-01-01T23:59:59.000Z

269

The urban design of distributed energy resources  

E-Print Network (OSTI)

Distributed energy resources (DERs) are a considerable research focus for cities to reach emissions reduction goals and meet growing energy demand. DERs, consisting of local power plants and distribution infrastructure, ...

Sheehan, Travis (Travis P.)

2012-01-01T23:59:59.000Z

270

Federal Energy Management Program: Distributed-scale Renewable Energy  

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

Distributed-scale Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) to someone by E-mail Share Federal Energy Management Program: Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) on Facebook Tweet about Federal Energy Management Program: Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) on Twitter Bookmark Federal Energy Management Program: Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) on Google Bookmark Federal Energy Management Program: Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) on Delicious Rank Federal Energy Management Program: Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) on Digg Find More places to share Federal Energy Management Program: Distributed-scale Renewable Energy Projects (Smaller than 10 MWs) on

271

Hybrid distributed generation for power distribution systems planning  

Science Conference Proceedings (OSTI)

This paper presents planning models for hybrid distributed generation systems, as well as the results corresponding to a distribution systems planning problem obtained using a new computational tool based on a Geographic Information System, GIS. This ... Keywords: distributed generation (DG), geographical information systems (GIS), hybrid power systems, optimal planning

I. J. Ramírez-Rosado; P. J. Zorzano-Santamaría; L. A. Fernández-Jiménez; E. García-Garrido; P. Lara-Santillán; E. Zorzano-Alba; M. Mendoza-Villena

2006-02-01T23:59:59.000Z

272

Renewable Energy andRenewable Energy and Distributed PowerDistributed Power  

E-Print Network (OSTI)

Government Intervention, Use of Renewable Energyof Renewable Energy #12;Brief US History of Electric PowerBrief US HistoryRenewable Energy andRenewable Energy and Distributed PowerDistributed Power GenerationGeneration PHistorical Perspectives DG FundamentalsDG Fundamentals Renewable Energy and DistributedRenewable Energy and Distributed

273

Energy Systems | Department of Energy  

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

Energy Systems Energy Systems webinarsteamtrap20100605.pdf webcast2009-0827hvacefficiency.pdf webcast2009-0820whmanagephsystems.pdf More Documents & Publications New and...

274

EIS Distribution | Department of Energy  

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

EIS Distribution EIS Distribution This DOE guidance presents a series of recommendations related to the EIS distribution process, which includes creating and updating a...

275

Distribution System Planning with Distributed Generation: Optimal versus Heuristic Approach.  

E-Print Network (OSTI)

??Distribution system design and planning is facing a major change in paradigm because of deregulation of the power industry and with rapid penetration of distributed… (more)

Bin Humayd, Abdullah

2011-01-01T23:59:59.000Z

276

Distribution System Design for Strategic Use of Distributed Generation  

Science Conference Proceedings (OSTI)

This project was undertaken to identify distribution system design characteristics that limit widespread distributed generation (DG) penetration in utility distribution systems and to suggest new system design paths that increase strategic use of DG by distribution system operators. This work in 2005 was the first phase (requirements definition) of a multi-year project in the EPRI Advanced Distribution Automation (ADA) program plan. The multi-year project calls for design, implementation, and testing of ...

2005-12-19T23:59:59.000Z

277

Approximations to the Distributed Activation Energy Model  

E-Print Network (OSTI)

Approximations to the Distributed Activation Energy Model for Pyrolysis C.P. Please, 1 M.J. Mc, then resubmitted after minor revisions in September 2002. Abstract The Distributed Activation Energy Model (DAEM effective method for estimating kinetic parameters and the distribution of activation energies. Comparison

McGuinness, Mark

278

NREL: Energy Systems Integration - Energy Systems Integration...  

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

Energy Systems Integration Facility Newsroom The Energy Systems Integration Facility (ESIF) will be one of the only megawatt-scale test facilities in the United States that...

279

Integrated Distributed Generation and Energy Storage Concepts  

Science Conference Proceedings (OSTI)

Distributed generation (DG) can provide users with versatile and cost effective solutions for many of their energy requirements. However, as these devices have begun to proliferate, there have been a number of load and power system compatibility concerns that have been identified. To better understand and address DG product improvement opportunities, this report details the capabilities and limitations of existing DG applications from the perspective of critical load starting and power quality support. I...

2003-01-20T23:59:59.000Z

280

Building a Smarter Distribution System in Pennsylvania  

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

Study - PPL Electric Utilities Corporation Smart Grid Investment Grant Study - PPL Electric Utilities Corporation Smart Grid Investment Grant 1 Building a Smarter Distribution System in Pennsylvania PPL Electric Utilities Corporation (PPL) provides electricity to 1.4 million customers across central and eastern Pennsylvania. Having installed smart meters and other advanced technologies over the last several years, PPL has experience with operating smart grid systems and achieving operational improvements. To further improve quality of service for its customers, PPL is implementing a $38 million Smart Grid Investment Grant, which includes $19 million in Recovery Act funds from the U.S. Department of Energy (DOE). PPL is installing a distribution management system (DMS), distribution automation (DA) devices, and supporting communication systems in a pilot program in the Harrisburg

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


281

Integrated Energy System Dispatch Optimization  

E-Print Network (OSTI)

savings. R EFERENCES Distributed Energy Resources Researchand A. Davis, “Distributed Energy Neural Network Integrationand C. Marnay, “Distributed Energy Resources At Naval Base

Firestone, Ryan; Stadler, Michael; Marnay, Chris

2006-01-01T23:59:59.000Z

282

Distributed Energy Communications & Controls, Lab Activities - Summary  

Science Conference Proceedings (OSTI)

The purpose is to develop controls for inverter-based renewable and non-renewable distributed energy systems to provide local voltage, power and power quality support for loads and the power grid. The objectives are to (1) develop adaptive controls for inverter-based distributed energy (DE) systems when there are multiple inverters on the same feeder and (2) determine the impact of high penetration high seasonal energy efficiency ratio (SEER) air conditioning (A/C) units on power systems during sub-transmission faults which can result in an A/C compressor motor stall and assess how inverter-based DE can help to mitigate the stall event. The Distributed Energy Communications & Controls Laboratory (DECC) is a unique facility for studying dynamic voltage, active power (P), non-active power (Q) and power factor control from inverter-based renewable distributed energy (DE) resources. Conventionally, inverter-based DE systems have been designed to provide constant, close to unity power factor and thus not provide any voltage support. The DECC Lab interfaces with the ORNL campus distribution system to provide actual power system testing of the controls approach. Using mathematical software tools and the DECC Lab environment, we are developing and testing local, autonomous and adaptive controls for local voltage control and P & Q control for inverter-based DE. We successfully tested our active and non-active power (P,Q) controls at the DECC laboratory along with voltage regulation controls. The new PQ control along with current limiter controls has been tested on our existing inverter test system. We have tested both non-adaptive and adaptive control modes for the PQ control. We have completed several technical papers on the approaches and results. Electric power distribution systems are experiencing outages due to a phenomenon known as fault induced delayed voltage recovery (FIDVR) due to air conditioning (A/C) compressor motor stall. Local voltage collapse from FIDVR is occurring in part because modern air-conditioner and heat pump compressor motors are much more susceptible to stalling during a voltage sag or dip than older motors. These motors can stall in less than three cycles (0.05 s) when a fault, for example, on the sub-transmission system, causes voltage on the distribution system to sag to 70% or less of nominal. We completed a new test system for A/C compressor motor stall testing at the DECC Lab. The A/C Stall test system is being used to characterize when and how compressor motors stall under low voltage and high compressor pressure conditions. However, instead of using air conditioners, we are using high efficiency heat pumps. We have gathered A/C stall characterization data for both sustained and momentary voltage sags of the test heat pump. At low enough voltage, the heat pump stalls (compressor motor stops and draws 5-6 times normal current in trying to restart) due to low inertia and low torque of the motor. For the momentary sag, we are using a fast acting contactor/switch to quickly switch from nominal to the sagged voltage in cycles.

Rizy, D Tom [ORNL

2010-01-01T23:59:59.000Z

283

Tips: Booklet Distribution | Department of Energy  

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

April 11, 2012 - 8:54am Addthis Tips: Booklet Distribution There are many ways to obtain Energy Savers-Tips for Saving Money and Energy at Home You can access Energy Savers, as...

284

Energy Distribution in Melvin's Magnetic Universe  

E-Print Network (OSTI)

We use the energy-momentum complexes of Landau and Lifshitz and Papapetrou to obtain the energy distribution in Melvin's magnetic universe. For this space-time we find that these definitions of energy give the same and convincing results. The energy distribution obtained here is the same as we obtained earlier for the same space-time using the energy-momentum complex of Einstein. These results uphold the usefulness of the energy-momentum complexes.

S. S. Xulu

1999-12-22T23:59:59.000Z

285

Properly Understanding the Impacts of Distributed Resources on Distribution Systems  

Science Conference Proceedings (OSTI)

The subject paper discusses important impacts of distributed resources on distribution networks and feeders. These include capacity, line losses, voltage regulation, and central system support (such as volt/var via central generators and substation) as the number, placement and penetration levels of distributed resources are varied. Typically, the impacts of distributed resources on the distribution system are studied by using steady-state rather than dynamic analysis tools. However, the response time and transient impacts of both system equipment (such as substation/feeder capacitors) and distributed resources needs to be taken into account and only dynamic analysis will provide the full impact results. ORNL is wrapping up a study of distributed resources interconnected to a large distribution system considering the above variables. A report of the study and its results will be condensed into a paper for this panel session. The impact of distributed resources will vary as the penetration level reaches the capacity of the distribution feeder/system. The question is how high of a penetration of distributed resource can be accommodated on the distribution feeder/system without any major changes to system operation, design and protection. The impacts most surely will vary depending upon load composition, distribution and level. Also, it is expected that various placement of distributed resources will impact the distribution system differently.

Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Li, Huijuan [University of Tennessee, Knoxville (UTK); Adhikari, Sarina [ORNL; Kueck, John D [ORNL

2010-01-01T23:59:59.000Z

286

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

Gabel and Andresen, HVAC Secondary Toolkil. Atlanta: ASHRAE,P_02 Measuring Advances in HVAC Distribution System Designdesign and operation of the HVAC thermal distribution system

Franconi, E.

2011-01-01T23:59:59.000Z

287

Renewable and Distributed Systems Integration Peer Review  

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

4 4 Denver Marriott West Golden, Colorado AGENDA Tuesday, November 2, 2010 8:00 am Registration and Continental Breakfast 9:00 am-9:10 am Welcome Dr. Robert Hawsey, Associate Laboratory Director for Renewable Electricity and End Use Systems, US DOE-National Renewable Energy Laboratory 9:10 am-9:25 am Overview of Smart Grid Program Eric Lightner, U.S. Department of Energy 9:25 am-9:40 am Overview of Smart Grid Research and Development Activities Dan Ton, U.S. Department of Energy Moderator - Merrill Smith, U.S. Department of Energy 9:40 am-10:10 am University of Hawaii Renewable and Distributed Systems Jay Griffin, University of Hawaii 10:10 am-10:40 am Demonstration of a Coordinated and Integrated System Dennis Sumner, City of Fort Collins

288

Effects of Distributed Energy Resources on Conservation Voltage Reduction (CVR)  

SciTech Connect

Conservation Voltage Reduction (CVR) is one of the cheapest technologies which can be intelligently leveraged to provide considerable energy savings. The addition of renewables in the form of distributed resources can affect the entire power system, but more importantly, affects the traditional substation control schemes at the distribution level. This paper looks at the effect on energy consumption, peak load reduction, and voltage profile changes due to the addition of distributed generation in a distribution feeder using combinations of volt var control. An IEEE 13-node system is used to simulate the various cases. Energy savings and peak load reduction for different simulation scenarios are compared.

Singh, Ruchi; Tuffner, Francis K.; Fuller, Jason C.; Schneider, Kevin P.

2011-10-10T23:59:59.000Z

289

Collaborative Broker for Distributed Energy Resources Joo Carlos Ferreira1  

E-Print Network (OSTI)

a system to support DER (Distributed Energy Resources) energy exchange, define local prices and coordinate and source (e.g., hydropower, wind power, photovoltaic, etc); (4) energy prices; and (5) weather information, weekly, monthly and annual energy expenses, price variation of electricity, charging periods, among

da Silva, Alberto Rodrigues

290

Evaluation Framework and Tools for Distributed Energy Resources  

E-Print Network (OSTI)

of Customer Adoption of Distributed Energy Resources." LBNL-Strategic Plan for Distributed Energy Resources." U.S.3. Effects of Distributed Energy Resources Deployment

Gumerman, Etan Z.; Bharvirkar, Ranjit R.; LaCommare, Kristina Hamachi; Marnay, Chris

2003-01-01T23:59:59.000Z

291

Integration of distributed energy resources. The CERTS Microgrid Concept  

E-Print Network (OSTI)

2001. Integration of Distributed Energy Resources - The C Enew Integration of Distributed Energy Resources - The C E Ron Integration of Distributed Energy Resources The CERTS

2002-01-01T23:59:59.000Z

292

Modeling of customer adoption of distributed energy resources  

E-Print Network (OSTI)

Customer Adoption of Distributed Energy Resources Ozbek, A.Customer Adoption of Distributed Energy Resources Figure 39.Customer Adoption of Distributed Energy Resources REFERENCES

2001-01-01T23:59:59.000Z

293

AMO Industrial Distributed Energy: Partnerships  

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

energy efficiency by 2020. The Industrial Energy EfficiencyCombined Heat & Power Working Group is developing a number of resources. News Energy Department Invests in...

294

Sustainable Energy Systems Group  

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

Sustainable Energy Systems Group The Sustainable Energy Systems Group studies the impacts of energy generation and use, manufacturing, and other activities on the environment, the...

295

A study of time-dependent responses of a mechanical displacement ventilation (DV) system and an underfloor air distribution (UFAD) system : building energy performance of the UFAD system  

E-Print Network (OSTI)

strong demands for alternative cooling and heating systemsAs a successful alternative cooling system to an OH system,was introduced as an alternative cooling system for a data

Yu, Jong Keun

2010-01-01T23:59:59.000Z

296

A Protocol for Quantum Energy Distribution  

E-Print Network (OSTI)

A new protocol, quantum energy distribution (QED), is proposed in which multiple parties can simultaneously extract positive energy from spin chains by common secret keys shared by an energy supplier. QED is robust against impersonation; an adversary, who does not have a common secret key and attempts to get energy, will instead give energy to the spin chains. The total amount of energy transfer gives a lower bound of the residual energy of any local cooling process by the energy supplier.

Masahiro Hotta

2008-03-11T23:59:59.000Z

297

Protection system design for power distribution systems in the presence of distributed generation.  

E-Print Network (OSTI)

??The increasing presence of distributed generation and the steady modernization of power distribution system equipment have presented new opportunities in power distribution system studies. This… (more)

Mao, Yiming

2005-01-01T23:59:59.000Z

298

Distributed Renewable Energy Generation Impacts on Microgrid Operation and Reliability  

Science Conference Proceedings (OSTI)

Microgrids incorporating distributed generation, and particularly those incorporating renewable energy technologies, have the potential to improve electric power system efficiency and reliability while providing novel benefits to their owners, operators, and the system as a whole. This report focuses on the impact of renewable energy technologies on microgrids and on the larger question of the impact of distributed generation and microgrids on the electric power system.

2002-02-06T23:59:59.000Z

299

Ada in distributed systems: an overview  

Science Conference Proceedings (OSTI)

This paper reviews the available literature on the use of Ada in distributed systems. The following issues are discussed in more detail: units of distribution, program partitioning, building configurations, interprogram communication, type checking, ... Keywords: Ada, distributed systems, program partitioning

Marcin Paprzycki; Janusz Zalewski

1997-03-01T23:59:59.000Z

300

Distributed Energy Resources Market Diffusion Model  

E-Print Network (OSTI)

of Electricity Delivery and Energy Reliability, Distributed Energy Program of the U.S. Department of Energy under regions are chosen to represent the diversity in U.S. climate and energy rates: Atlanta, Boston, Chicago, with the use of the building energy simulation program DOE-2, specific to various representative U.S. locations

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


301

CEBAF Distributed Data Acquisition System  

SciTech Connect

There are thousands of signals distributed throughout Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) that are useful for troubleshooting and identifying instabilities. Many of these signals are only available locally or monitored by systems with small bandwidths that cannot identify fast transients. The Distributed Data Acquisition (Dist DAQ) system will sample and record these signals simultaneously at rates up to 40 Msps. Its primary function will be to provide waveform records from signals throughout CEBAF to the Experimental Physics and Industrial Control System (EPICS). The waveforms will be collected after the occurrence of an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults. The waveform data can then be processed to quickly identify beam transport issues, thus reducing down time and increasing CEBAF performance. The Dist DAQ system will be comprised of multiple standalone chassis distributed throughout CEBAF. They will be interconnected via a fiber optic network to facilitate the global triggering of events. All of the chassis will also be connected directly to the CEBAF Ethernet and run EPICS locally. This allows for more flexibility than the typical configuration of a single board computer and other custom printed circuit boards (PCB) installed in a card cage.

Trent Allison; Thomas Powers

2005-05-01T23:59:59.000Z

302

Water and Energy Wasted During Residential Shower Events: Findings from a Pilot Field Study of Hot Water Distribution Systems  

E-Print Network (OSTI)

the shower only. The wasted energy is the difference betweenLBNL-5115E Water and Energy Wasted During Residential Showercalculate the water and energy wasted during shower events

Lutz, Jim

2012-01-01T23:59:59.000Z

303

Water and Energy Wasted During Residential Shower Events: Findings from a Pilot Field Study of Hot Water Distribution Systems  

E-Print Network (OSTI)

study to determine waste of water and energy in residential30 percent. The average waste of energy in the hot water ispaper examines the waste of water and energy associated with

Lutz, Jim

2012-01-01T23:59:59.000Z

304

Pilot Phase of a Field Study to Determine Waste of Water and Energy in Residential Hot-Water Distribution Systems  

E-Print Network (OSTI)

understanding the waste of energy and water in residentialStudy to Determine Waste of Water and Energy in ResidentialStudy to Determine Waste of Water and Energy in Residential

Lutz, Jim

2012-01-01T23:59:59.000Z

305

Water Heaters and Hot Water Distribution Systems  

E-Print Network (OSTI)

distribution system, ground-source heat pump and ground heatdistribution systems, ground-source heat pumps and ground

Lutz, Jim

2012-01-01T23:59:59.000Z

306

Electric utility transmission and distribution upgrade deferral benefits from modular electricity storage : a study for the DOE Energy Storage Systems Program.  

DOE Green Energy (OSTI)

The work documented in this report was undertaken as part of an ongoing investigation of innovative and potentially attractive value propositions for electricity storage by the United States Department of Energy (DOE) and Sandia National Laboratories (SNL) Electricity Storage Systems (ESS) Program. This study characterizes one especially attractive value proposition for modular electricity storage (MES): electric utility transmission and distribution (T&D) upgrade deferral. The T&D deferral benefit is characterized in detail. Also presented is a generalized framework for estimating the benefit. Other important and complementary (to T&D deferral) elements of possible value propositions involving MES are also characterized.

Eyer, James M. (Distributed Utility Associates, Inc., Livermore, CA)

2009-06-01T23:59:59.000Z

307

A study of time-dependent responses of a mechanical displacement ventilation (DV) system and an underfloor air distribution (UFAD) system : building energy performance of the UFAD system  

E-Print Network (OSTI)

single or multi thermal plume and cooling diffusers duringconfirm how thermal loss affects cooling energy consumption,to have the highest cooling load (the thermal decay also was

Yu, Jong Keun

2010-01-01T23:59:59.000Z

308

A study of time-dependent responses of a mechanical displacement ventilation (DV) system and an underfloor air distribution (UFAD) system : building energy performance of the UFAD system  

E-Print Network (OSTI)

simulations in different climate zones for OH and UFAD.different Californian climate zones. Annual energy con-that of OH across all climate zones. UFAD has approximately

Yu, Jong Keun

2010-01-01T23:59:59.000Z

309

Tips: Booklet Distribution | Department of Energy  

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

Tips: Booklet Distribution Tips: Booklet Distribution Tips: Booklet Distribution April 11, 2012 - 8:54am Addthis Tips: Booklet Distribution There are many ways to obtain Energy Savers-Tips for Saving Money and Energy at Home! You can access Energy Savers, as well as the Spanish-language Energy Savers, in the following ways. Order booklets in bulk quantities through the Energy Savers Partnership. Order now! Organizations can order booklet copies in bulk, for distribution to your customers, members, or employees. The Energy Savers booklet and the Spanish Energy Savers booklet are available for ordering. Booklet ordering is available for a limited time, at low cost to you. Please place your orders directly with the printer through the online web site. Order today for delivery before the winter heating season!

310

Definition: Distributed generation | Open Energy Information  

Open Energy Info (EERE)

generation generation Jump to: navigation, search Dictionary.png Distributed generation A term used by the power industry to describe localized or on-site power generation[1] View on Wikipedia Wikipedia Definition Distributed generation, also called on-site generation, dispersed generation, embedded generation, decentralized generation, decentralized energy or distributed energy, generates electricity from many small energy sources. Most countries generate electricity in large centralized facilities, such as fossil fuel, nuclear, large solar power plants or hydropower plants. These plants have excellent economies of scale, but usually transmit electricity long distances and can negatively affect the environment. Distributed generation allows collection of energy from many

311

Sensors for Underground Distribution Systems  

Science Conference Proceedings (OSTI)

A variety of different sensors are needed for underground distribution applications. These include sensors for temperature monitoring to track possible overload issues and other issues that can cause heating in underground systems (for example, arcing), sensors for fault detection and characterization, and sensors for voltage and current monitoring to support a wide range of applications (for example, SCADA, volt/var control, and load flow management). In 2008, EPRI evaluated the present state of medium-...

2010-03-31T23:59:59.000Z

312

Distributed Energy Resources Market Diffusion Model  

SciTech Connect

Distributed generation (DG) technologies, such as gas-fired reciprocating engines and microturbines, have been found to be economically beneficial in meeting commercial-sector electrical, heating, and cooling loads. Even though the electric-only efficiency of DG is lower than that offered by traditional central stations, combined heat and power (CHP) applications using recovered heat can make the overall system energy efficiency of distributed energy resources (DER) greater. From a policy perspective, however, it would be useful to have good estimates of penetration rates of DER under various economic and regulatory scenarios. In order to examine the extent to which DER systems may be adopted at a national level, we model the diffusion of DER in the US commercial building sector under different technical research and technology outreach scenarios. In this context, technology market diffusion is assumed to depend on the system's economic attractiveness and the developer's knowledge about the technology. The latter can be spread both by word-of-mouth and by public outreach programs. To account for regional differences in energy markets and climates, as well as the economic potential for different building types, optimal DER systems are found for several building types and regions. Technology diffusion is then predicted via two scenarios: a baseline scenario and a program scenario, in which more research improves DER performance and stronger technology outreach programs increase DER knowledge. The results depict a large and diverse market where both optimal installed capacity and profitability vary significantly across regions and building types. According to the technology diffusion model, the West region will take the lead in DER installations mainly due to high electricity prices, followed by a later adoption in the Northeast and Midwest regions. Since the DER market is in an early stage, both technology research and outreach programs have the potential to increase DER adoption, and thus, shift building energy consumption to a more efficient alternative.

Maribu, Karl Magnus; Firestone, Ryan; Marnay, Chris; Siddiqui,Afzal S.

2006-06-16T23:59:59.000Z

313

Distributed Energy Resources Market Diffusion Model  

SciTech Connect

Distributed generation (DG) technologies, such as gas-fired reciprocating engines and microturbines, have been found to be economically beneficial in meeting commercial-sector electrical, heating, and cooling loads. Even though the electric-only efficiency of DG is lower than that offered by traditional central stations, combined heat and power (CHP) applications using recovered heat can make the overall system energy efficiency of distributed energy resources (DER) greater. From a policy perspective, however, it would be useful to have good estimates of penetration rates of DER under various economic and regulatory scenarios. In order to examine the extent to which DER systems may be adopted at a national level, we model the diffusion of DER in the US commercial building sector under different technical research and technology outreach scenarios. In this context, technology market diffusion is assumed to depend on the system's economic attractiveness and the developer's knowledge about the technology. The latter can be spread both by word-of-mouth and by public outreach programs. To account for regional differences in energy markets and climates, as well as the economic potential for different building types, optimal DER systems are found for several building types and regions. Technology diffusion is then predicted via two scenarios: a baseline scenario and a program scenario, in which more research improves DER performance and stronger technology outreach programs increase DER knowledge. The results depict a large and diverse market where both optimal installed capacity and profitability vary significantly across regions and building types. According to the technology diffusion model, the West region will take the lead in DER installations mainly due to high electricity prices, followed by a later adoption in the Northeast and Midwest regions. Since the DER market is in an early stage, both technology research and outreach programs have the potential to increase DER adoption, and thus, shift building energy consumption to a more efficient alternative.

Maribu, Karl Magnus; Firestone, Ryan; Marnay, Chris; Siddiqui,Afzal S.

2006-06-16T23:59:59.000Z

314

Managing Distributed Temperature Measurements in an Embedded System of a 3-Phase 10 kVA Energy Efficient Switchable Distribution Transformer Employing a Modular Approach  

Science Conference Proceedings (OSTI)

Temperature measurements are one of the most significant factors in condition monitoring and protecting transformers as well as estimating their life expectancy. With switchable transformers, it is also significant to carry out temperature monitoring ... Keywords: Switchable Transformer, Distributed Temperature Measurement, Controller Area Network, Modular Approach

H. A. Dharmawan; S. A. M. Ali

2010-12-01T23:59:59.000Z

315

Energy Systems | Department of Energy  

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

Systems Energy Systems webinarsteamtrap20100605.pdf webcast2009-0827hvacefficiency.pdf webcast2009-0820whmanagephsystems.pdf More Documents & Publications AMO Software...

316

Transportable Energy Storage Systems Project  

Science Conference Proceedings (OSTI)

This project will define the requirements and specification for a transportable energy storage system and then screen various energy storage options and assess their capability to meet that specification. The application will be designed to meet peak electrical loads (3-4 hours of storage) on the electrical distribution system.

2009-10-23T23:59:59.000Z

317

Angular Distribution Models for Top-of-Atmosphere Radiative Flux Estimation from the Clouds and the Earth's Radiant Energy System Instrument on the Tropical Rainfall Measuring Mission Satellite. Part II: Validation  

Science Conference Proceedings (OSTI)

Top-of-atmosphere (TOA) radiative fluxes from the Clouds and the Earth's Radiant Energy System (CERES) are estimated from empirical angular distribution models (ADMs) that convert instantaneous radiance measurements to TOA fluxes. This paper ...

Norman G. Loeb; Konstantin Loukachine; Natividad Manalo-Smith; Bruce A. Wielicki; David F. Young

2003-12-01T23:59:59.000Z

318

Angular Distribution Models for Top-of-Atmosphere Radiative Flux Estimation from the Clouds and the Earth’s Radiant Energy System Instrument on the Terra Satellite. Part II: Validation  

Science Conference Proceedings (OSTI)

Errors in top-of-atmosphere (TOA) radiative fluxes from the Clouds and the Earth’s Radiant Energy System (CERES) instrument due to uncertainties in radiance-to-flux conversion from CERES Terra angular distribution models (ADMs) are evaluated ...

Norman G. Loeb; Seiji Kato; Konstantin Loukachine; Natividad Manalo-Smith; David R. Doelling

2007-04-01T23:59:59.000Z

319

Benefits Quantification and Strategic Implications of Distributed Energy Resources to Distribution Companies: 2004 Update  

Science Conference Proceedings (OSTI)

Distributed energy resources (DER) have the potential to become a major factor in the evolving competitive electric power industry. Utilities need a plan and rationale to address DER. DER has the potential to lower electric distribution company revenue and profits, but, on the plus side, DER has the promise to be a more cost-effective way of serving some distribution system needs. Ideally, distribution companies would be able to develop business strategies that integrate DER into their overall business s...

2004-12-21T23:59:59.000Z

320

ENERGY DISTRIBUTION OF A STRINGY CHARGED BLACK  

E-Print Network (OSTI)

Abstract. The energy distribution associated with a stringy charged black hole is studied using Møller’s energy-momentum complex. Our result is reasonable and it differs from that known in literature using Einstein’s energymomentum complex. 1.

Ragab M. Gad

2003-01-01T23:59:59.000Z

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


321

Energy Systems Integration  

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

Systems Integration Systems Integration Ben Kroposki, PhD, PE Director, Energy Systems Integration National Renewable Energy Laboratory 2 Reducing investment risk and optimizing systems in a rapidly changing energy world * Increasing penetration of variable RE in grid * Increasing ultra high energy efficiency buildings and controllable loads * New data, information, communications and controls * Electrification of transportation and alternative fuels * Integrating energy storage (stationary and mobile) and thermal storage * Interactions between electricity/thermal/fuels/data pathways * Increasing system flexibility and intelligence Current Energy Systems Future Energy Systems Why Energy Systems Integration? 3 Energy Systems Integration Continuum Scale Appliance (Plug)

322

The ATLAS Distributed Analysis System  

E-Print Network (OSTI)

In the LHC operations era, analysis of the multi-petabyte ATLAS data sample by globally distributed physicists is a challenging task. To attain the required scale the ATLAS Computing Model was designed around the concept of grid computing, realized in the Worldwide LHC Computing Grid (WLCG), the largest distributed computational resource existing in the sciences. The ATLAS experiment currently stores over 140 PB of data and runs about 140,000 concurrent jobs continuously at WLCG sites. During the first run of the LHC, the ATLAS Distributed Analysis (DA) service has operated stably and scaled as planned. More than 1600 users submitted jobs in 2012, with 2 million or more analysis jobs per week, peaking at about a million jobs per day. The system dynamically distributes popular data to expedite processing and maximally utilize resources. The reliability of the DA service is high but steadily improving; grid sites are continually validated against a set of standard tests, and a dedicated team of expert shifters ...

Legger, F; The ATLAS collaboration; Pacheco Pages, A; Stradling, A

2013-01-01T23:59:59.000Z

323

AMO Industrial Distributed Energy: Research and Development  

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

reciprocating engine systems (ARES), packaged CHP systems, high-value applications, fuel-flexible CHP, waste energy recovery systems, and demonstrations of these technologies....

324

Dynamic Voltage Regulation Using Distributed Energy Resources  

Science Conference Proceedings (OSTI)

Many distributed energy resources (DE) are near load centres and equipped with power electronics converters to interface with the grid, therefore it is feasible for DE to provide ancillary services such as voltage regulation, nonactive power compensation, and power factor correction. A synchronous condenser and a microturbine with an inverter interface are implemented in parallel in a distribution system to regulate the local voltage. Voltage control schemes of the inverter and the synchronous condenser are developed. The experimental results show that both the inverter and the synchronous condenser can regulate the local voltage instantaneously, while the dynamic response of the inverter is faster than the synchronous condenser; and that integrated voltage regulation (multiple DE perform voltage regulation) can increase the voltage regulation capability, increase the lifetime of the equipment, and reduce the capital and operation costs.

Xu, Yan [ORNL; Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Kueck, John D [ORNL

2007-01-01T23:59:59.000Z

325

An autonomy-oriented computing mechanism for modeling the formation of energy distribution networks: crude oil distribution in U.S. and Canada  

Science Conference Proceedings (OSTI)

An efficient, economical, as well as reliable energy distribution system plays important roles in distributing energy resources from energy suppliers to energy consumers in different regions. In this paper, we present a decentralized self-organized mechanism ...

Benyun Shi; Jiming Liu

2010-09-01T23:59:59.000Z

326

Virtual Data System on distributed virtual machines in computational grids  

Science Conference Proceedings (OSTI)

This paper presents the work of building a Grid workflow system on distributed virtual machines. A Grid Virtualisation Engine (GVE) is implemented to manage virtual machines as computing resources for Grid applications. The Virtual Data System ... Keywords: compact muon solenoid, distributed virtual machines, grid computing, grid workflow, high energy physics applications, virtual data systems

Lizhe Wang; Gregor Von Laszewski; Jie Tao; Marcel Kunze

2010-09-01T23:59:59.000Z

327

Advanced Power Electronic Interfaces for Distributed Energy Systems, Part 2: Modeling, Development, and Experimental Evaluation of Advanced Control Functions for Single-Phase Utility-Connected Inverter  

Science Conference Proceedings (OSTI)

Integrating renewable energy and distributed generations into the Smart Grid architecture requires power electronic (PE) for energy conversion. The key to reaching successful Smart Grid implementation is to develop interoperable, intelligent, and advanced PE technology that improves and accelerates the use of distributed energy resource systems. This report describes the simulation, design, and testing of a single-phase DC-to-AC inverter developed to operate in both islanded and utility-connected mode. It provides results on both the simulations and the experiments conducted, demonstrating the ability of the inverter to provide advanced control functions such as power flow and VAR/voltage regulation. This report also analyzes two different techniques used for digital signal processor (DSP) code generation. Initially, the DSP code was written in C programming language using Texas Instrument's Code Composer Studio. In a later stage of the research, the Simulink DSP toolbox was used to self-generate code for the DSP. The successful tests using Simulink self-generated DSP codes show promise for fast prototyping of PE controls.

Chakraborty, S.; Kroposki, B.; Kramer, W.

2008-11-01T23:59:59.000Z

328

NREL: Electric Infrastructure Systems Research - Distributed...  

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

the distributed power industry in the development and testing of distributed power systems. Researchers use state-of-the-art laboratories and outdoor test beds to characterize...

329

An analysis of DC distribution systems .  

E-Print Network (OSTI)

??The Master's Thesis research focuses on analyzing the possibilities of using Direct Current distribution systems to distribute power to end users. Considering the shift in… (more)

Ajitkumar, Rohit

2011-01-01T23:59:59.000Z

330

Numerical Analysis of a Cold Air Distribution System  

E-Print Network (OSTI)

Cold air distribution systems may reduce the operating energy consumption of air-conditioned air supply system and improve the outside air volume percentages and indoor air quality. However, indoor temperature patterns and velocity field are easily non-uniform so that residents usually feel uncomfortable. The distribution of indoor airflow by cold air distribution is researched in this paper. We study indoor air distribution under different low temperature air supply conditions by numerical simulation. The simulated results agree well with the experiments.

Zhu, L.; Li, R.; Yuan, D.

2006-01-01T23:59:59.000Z

331

The Localized Energy Distribution of Dark Energy Star Solutions  

E-Print Network (OSTI)

We examine the question of energy localization for an exact solution of Einstein's equations with a scalar field corresponding to the phantom energy interpretation of dark energy. We apply three different energy-momentum complexes, the Einstein, Papapetrou and M{\\o}ller prescriptions, to the exterior metric and determine the energy distribution for each. Comparing the results, we find that the three prescriptions yield identical energy distributions.

Paul Halpern; Michael Pecorino

2013-03-05T23:59:59.000Z

332

The Localized Energy Distribution of Dark Energy Star Solutions  

E-Print Network (OSTI)

We examine the question of energy localization for an exact solution of Einstein's equations with a scalar field corresponding to the phantom energy interpretation of dark energy. We apply three different energy-momentum complexes, the Einstein, Papapetrou and M{\\o}ller prescriptions, to the exterior metric and determine the energy distribution for each. Comparing the results, we find that the three prescriptions yield identical energy distributions.

Halpern, Paul

2013-01-01T23:59:59.000Z

333

IPCC Data Distribution Centre | Open Energy Information  

Open Energy Info (EERE)

IPCC Data Distribution Centre IPCC Data Distribution Centre Jump to: navigation, search Tool Summary Name: IPCC Data Distribution Centre Agency/Company /Organization: World Meteorological Organization, United Nations Environment Programme Sector: Energy, Land Topics: Baseline projection, GHG inventory, Co-benefits assessment, - Energy Access, - Environmental and Biodiversity, Pathways analysis Resource Type: Dataset Website: www.ipcc-data.org/ References: IPCC Data Distribution Centre [1] " The DDC provides climate, socio-economic and environmental data, both from the past and also in scenarios projected into the future. Technical guidelines on the selection and use of different types of data and scenarios in research and assessment are also provided." References ↑ "IPCC Data Distribution Centre"

334

Energy Basics: Photovoltaic Systems  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Photovoltaics Cells Systems Concentrating Solar...

335

Air distribution effectiveness with stratified air distribution systems  

E-Print Network (OSTI)

, Ph.D Qingyan Chen, Ph.D. Student Member ASHRAE Fellow ASHRAE ABSTRACT Stratified air distribution distribution systems has been taken into consideration by the ASHRAE standards through the air distribution effectiveness. For example, Table 6-1 of ANSI/ASHRAE Standard 62.1-2004 (ASHRAE 2004) defines the minimum

Chen, Qingyan "Yan"

336

Automated Fault Location In Smart Distribution Systems  

E-Print Network (OSTI)

Fault location in distribution systems is a critical component of outage management and service restoration, which directly impacts feeder reliability and quality of the electricity supply. Improving fault location methods supports the Department of Energy (DOE) “Grid 2030” initiatives for grid modernization by improving reliability indices of the network. Improving customer average interruption duration index (CAIDI) and system average interruption duration index (SAIDI) are direct advantages of utilizing a suitable fault location method. As distribution systems are gradually evolving into smart distribution systems, application of more accurate fault location methods based on gathered data from various Intelligent Electronic Devices (IEDs) installed along the feeders is quite feasible. How this may be done and what is the needed methodology to come to such solution is raised and then systematically answered. To reach this goal, the following tasks are carried out: 1) Existing fault location methods in distribution systems are surveyed and their strength and caveats are studied. 2) Characteristics of IEDs in distribution systems are studied and their impacts on fault location method selection and implementation are detailed. 3) A systematic approach for selecting optimal fault location method is proposed and implemented to pinpoint the most promising algorithms for a given set of application requirements. 4) An enhanced fault location method based on voltage sag data gathered from IEDs along the feeder is developed. The method solves the problem of multiple fault location estimations and produces more robust results. 5) An optimal IED placement approach for the enhanced fault location method is developed and practical considerations for its implementation are detailed.

Lotfifard, Saeed

2011-08-01T23:59:59.000Z

337

Advanced Distributed Energy Resource Compliant Distribution Circuits for High Reliability  

Science Conference Proceedings (OSTI)

Electric power distribution systems and their designs have not advanced much over the past 50 years. Industry restructuring has caused many utilities to defer infrastructure investments, and implement business as usual and conservative distribution system expansion plans. Many drivers are now causing utilities to rethink how the infrastructure of the future should be built out and how best to incorporate new technology. Drivers include higher demand for reliability, the ability to better manage loads, in...

2005-12-14T23:59:59.000Z

338

A Current Re-distribution Scheme for Improved Energy Harvesting in Concentrating Photovoltaic Systems Using Fine-grained dc-dc Conversion.  

E-Print Network (OSTI)

??This thesis presents a distributed power-management architecture for concentrating photovoltaic (CPV) systems. Specifically, the ?-conversion scheme with voltage equalization is analyzed and verified for the… (more)

Zaman, Mohammad Shawkat

2013-01-01T23:59:59.000Z

339

Advanced Manufacturing Office: Industrial Distributed Energy  

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

Industry Classification System (NAICS) code, system size, technologyprime mover, fuel, thermal energy use, and year installed. Access the CHP Project Profiles database....

340

The Impact of Distributed Programming Abstractions on Application Energy Consumption  

E-Print Network (OSTI)

The Impact of Distributed Programming Abstractions on Application Energy Consumption Young-Woo Kwon measure and analyze the impact of distributed programming abstractions on application energy consumption future efforts in creating energy efficient distributed programming abstractions. Keywords: energy

Ryder, Barbara G.

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


341

Tools, Methods, and Modeling for Advanced Distribution Systems  

Science Conference Proceedings (OSTI)

This report identifies new analytical requirements for the smart distribution system and explains how electric utilities can use new analytical tools to maximize the benefits of advanced control systems, mitigate the adverse consequences of distributed energy resources (especially renewables with variable output), and leverage new information that is becoming available to planning and design engineers.

2011-12-23T23:59:59.000Z

342

Analysis Model for Domestic Hot Water Distribution Systems: Preprint  

DOE Green Energy (OSTI)

A thermal model was developed to estimate the energy losses from prototypical domestic hot water (DHW) distribution systems for homes. The developed model, using the TRNSYS simulation software, allows researchers and designers to better evaluate the performance of hot water distribution systems in homes. Modeling results were compared with past experimental study results and showed good agreement.

Maguire, J.; Krarti, M.; Fang, X.

2011-11-01T23:59:59.000Z

343

Intrusion ripple analysis in distributed information systems  

Science Conference Proceedings (OSTI)

Security is a very important aspect of distributed computing systems, especially in distributed information environments involving wide-area networks, such as internets. This paper addresses how a security breach, such as intrusion, propagates through ... Keywords: computer crime, distributed information systems, internets, intrusion ripple analysis, networked information system, ripple effect analysis, security breach propagation, software maintenance, wide-area networks

S. S. Yau; Jun Zhu

1997-10-01T23:59:59.000Z

344

Energy distributions and effective temperatures in the packing of elastic sheets  

E-Print Network (OSTI)

Energy distributions and effective temperatures in the packing of elastic sheets S. Deboeuf, M of the branches forming the cross-section are broadly distributed. We find distributions of energy and within the bulk. While the geometrical properties of the sub-systems differ, their energy distributions

Paris-Sud XI, Université de

345

Distributed Generation Standard Contracts | Department of Energy  

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

Rhode Island enacted legislation (H.B. 6104) in June 2011 establishing a feed-in tariff for new distributed renewable energy generators up to three megawatts (MW) in...

346

Energy Efficiency Standards for Distribution Transformers: The...  

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

for Distribution Transformers: The Importance of the Load Factor Assessment from an Energy Saving Point of View. Speaker(s): Norma Anglani Date: April 10, 2001 - 12:00pm...

347

Impact of SolarSmart Subdivisions on SMUD's Distribution System  

DOE Green Energy (OSTI)

This study analyzes the distribution impacts of high penetrations of grid-integrated renewable energy systems, specifically photovoltaic (PV) equipped SolarSmart Homes found in the Anatolia III Residential Community.

McNutt, P.; Hambrick, J.; Keesee, M.; Brown, D.

2009-07-01T23:59:59.000Z

348

Theoretical and Experimental Analysis of micro-CHP Energy Systems.  

E-Print Network (OSTI)

??In the framework of the micro-CHP (Combined Heat and Power) energy systems and the Distributed Generation (GD) concept, an Integrated Energy System (IES) able to… (more)

Vecci, Roberta and#60;1978and#62

2013-01-01T23:59:59.000Z

349

Energy Delivery Systems Cybersecurity | Department of Energy  

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

Cybersecurity Energy Delivery Systems Cybersecurity Energy Delivery Systems Cybersecurity About the Cybersecurity for Energy Delivery Systems Program A key mission of the...

350

ENERGY EFFICIENCY AND ENVIRONMENTALLY FRIENDLY DISTRIBUTED ENERGY STORAGE BATTERY  

SciTech Connect

Electro Energy, Inc. conducted a research project to develop an energy efficient and environmentally friendly bipolar Ni-MH battery for distributed energy storage applications. Rechargeable batteries with long life and low cost potentially play a significant role by reducing electricity cost and pollution. A rechargeable battery functions as a reservoir for storage for electrical energy, carries energy for portable applications, or can provide peaking energy when a demand for electrical power exceeds primary generating capabilities.

LANDI, J.T.; PLIVELICH, R.F.

2006-04-30T23:59:59.000Z

351

Distributed Energy Resources at Federal Facilities. Federal Energy Management Program (FEMP) Technical Assistance Fact Sheet  

DOE Green Energy (OSTI)

This two-page overview describes how the use of distributed energy resources at Federal facilities is being supported by the U.S. Department of Energy's (DOE's) Federal Energy Management Program (FEMP). Distributed energy resources include both existing and emerging energy technologies: advanced industrial turbines and microturbines; combined heat and power (CHP) systems; fuel cells; geothermal systems; natural gas reciprocating engines; photovoltaics and other solar systems; wind turbines; small, modular biopower; energy storage systems; and hybrid systems. DOE FEMP is investigating ways to use these alternative energy systems in government facilities to meet greater demand, to increase the reliability of the power-generation system, and to reduce the greenhouse gases associated with burning fossil fuels.

Pitchford, P.

2001-07-16T23:59:59.000Z

352

Technologies for Distributed Energy Resources. Federal Energy Management Program (FEMP) Technical Assistance Fact Sheet  

DOE Green Energy (OSTI)

This four-page fact sheet describes distributed energy resources for Federal facilities, which are being supported by the U.S. Department of Energy's (DOE's) Federal Energy Management Program (FEMP). Distributed energy resources include both existing and emerging energy technologies: advanced industrial turbines and microturbines; combined heat and power (CHP) systems; fuel cells; geothermal systems; natural gas reciprocating engines; photovoltaics and other solar systems; wind turbines; small, modular biopower; energy storage systems; and hybrid systems. DOE FEMP is investigating ways to use these alternative energy systems in government facilities to meet greater demand, to increase the reliability of the power-generation system, and to reduce the greenhouse gases associated with burning fossil fuels.

Pitchford, P.; Brown, T.

2001-07-16T23:59:59.000Z

353

Distribution Drive | Open Energy Information  

Open Energy Info (EERE)

Drive Drive Jump to: navigation, search Name Distribution Drive Place Dallas, Texas Zip 75205 Product Biodiesel fuel distributor. Coordinates 32.778155°, -96.795404° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.778155,"lon":-96.795404,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

354

Energy Information Systems website  

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

and visualize the energy use of their buildings. Please visit the recently updated Energy Information System website for EETD research papers, case studies, and a download...

355

Energy Basics: Heating Systems  

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

of energy sources, including electricity, boilers, solar energy, and wood and pellet-fuel heating. Small Space Heaters Used when the main heating system is inadequate or when...

356

Energy Management Systems  

E-Print Network (OSTI)

This presentation will address results from a pilot project with 10 chemical plants on energy management systems and the development of an energy efficiency plant certification program.

Ferland, K.

2007-01-01T23:59:59.000Z

357

Strategic Intelligence Update: Energy Storage & Distributed Generation, May-June 2010  

Science Conference Proceedings (OSTI)

Distributed generation and energy storage technologies add value to a wide range of applications within the electric utility enterprise. Both distributed generation and energy storage systems can help utilities shift and manage peak loads within the distribution system, improve reliability, and potentially help defer infrastructure upgrades. Bulk energy storage especially has the ability to improve the value of intermittent renewable resources. Smaller-scale distributed energy storage, on the order of a ...

2010-05-28T23:59:59.000Z

358

Low jitter RF distribution system  

SciTech Connect

A timing signal distribution system includes an optical frequency stabilized laser signal amplitude modulated at an rf frequency. A transmitter box transmits a first portion of the laser signal and receive a modified optical signal, and outputs a second portion of the laser signal and a portion of the modified optical signal. A first optical fiber carries the first laser signal portion and the modified optical signal, and a second optical fiber carries the second portion of the laser signal and the returned modified optical signal. A receiver box receives the first laser signal portion, shifts the frequency of the first laser signal portion outputs the modified optical signal, and outputs an electrical signal on the basis of the laser signal. A detector at the end of the second optical fiber outputs a signal based on the modified optical signal. An optical delay sensing circuit outputs a data signal based on the detected modified optical signal. An rf phase detect and correct signal circuit outputs a signal corresponding to a phase stabilized rf signal based on the data signal and the frequency received from the receiver box.

Wilcox, Russell; Doolittle, Lawrence; Huang, Gang

2012-09-18T23:59:59.000Z

359

Energy Distribution of Black Plane Solutions  

E-Print Network (OSTI)

We use the Einstein energy-momentum complex to calculate the energy distribution of static plane-symmetric solutions of the Einstein-Maxwell equations in 3+1 dimensions with asymptotic anti-de Sitter behavior. This solution is expressed in terms of three parameters: the mass, electric charge and cosmological constant. We compare the energy distribution to that of the Reissner-Nordstrom-anti-de Sitter solution, pointing to qualitative differences between the models. Finally, we examine these results within the context of the Cooperstock hypothesis.

Paul Halpern

2005-05-11T23:59:59.000Z

360

Critical Needs for Distribution System Operations  

Science Conference Proceedings (OSTI)

The electric power distribution system (voltages up to 35 kV) is the most extensive network. While the operation of this system is of great importance from the reliability and safety point of view, managing this network varies among utilities from cases where modern distribution management systems are utilized to cases of minimal central operational capability. Distribution Management Systems (DMS) provide real time information to DSOs for the continuous moment by moment (24 hours a day, 7 days a week) o...

2005-12-20T23:59:59.000Z

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


361

Distributed Renewable Energy Finance and Policy Toolkit | Open Energy  

Open Energy Info (EERE)

Distributed Renewable Energy Finance and Policy Toolkit Distributed Renewable Energy Finance and Policy Toolkit Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Distributed Renewable Energy Finance and Policy Toolkit Agency/Company /Organization: Clean Energy States Alliance (CESA) Partner: Charles Kubert and Mark Sinclair Sector: Energy Focus Area: People and Policy, Economic Development Phase: Evaluate Options, Develop Goals, Develop Finance and Implement Projects Topics: Best Practices Resource Type: Guide/manual User Interface: Other Website: www.cleanenergystates.org/Publications/cesa-financial_Toolkit_Dec2009. Cost: Free Equivalent URI: cleanenergysolutions.org/content/distributed-renewable-energy-finance- Language: English Policies: "Financial Incentives,Regulations" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property.

362

Distributed Wind Energy Association | Open Energy Information  

Open Energy Info (EERE)

Energy Association Energy Association Address PO Box 1861 Place Flagstaff, AZ Zip 86002 Phone number 928-255-0214 Website http://www.distributedwind.org Coordinates 35.1978341°, -111.6464261° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.1978341,"lon":-111.6464261,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

363

Architecture of the Entropia Distributed Computing System  

Science Conference Proceedings (OSTI)

Distributed Computing, the exploitation of idle cycles on pervasive desktop PC systems offers the opportunity to increase the available computing power by orders of magnitude (10x - 1000x). However, for desktop PC distributed computing ...

Andrew A. Chien

2002-04-01T23:59:59.000Z

364

Advanced applications for distribution system optimization  

Science Conference Proceedings (OSTI)

The primary objective for distribution system operation has always been to provide acceptable voltage for all customers under all loading conditions while maintaining safe conditions for the field workforce and the general public and protecting distribution ...

R. W. Uluski

2012-01-01T23:59:59.000Z

365

Definition: Automated Distribution Circuit Switches | Open Energy  

Open Energy Info (EERE)

Circuit Switches Circuit Switches Jump to: navigation, search Dictionary.png Automated Distribution Circuit Switches Distribution circuit switches that can be operated automatically in response to control signals from local sensors, distribution automation systems, or grid control systems. Such switches can be installed as automated devices or existing equipment can be retrofitted with controls and communications. The degree of automation depends on the controls and communications system implemented. These switches can be opened or closed to isolate portions of a distribution circuit that has experienced a short circuit (fault), or must be taken out of service for maintenance or other operations. When used in combination, these switches can reroute power from other substations or nearby distribution circuits.[1]

366

Distributed Generation System Characteristics and Costs in the Buildings Sector  

Gasoline and Diesel Fuel Update (EIA)

Distributed Generation System Distributed Generation System Characteristics and Costs in the Buildings Sector August 2013 Independent Statistics & Analysis www.eia.gov U.S. Department of Energy Washington, DC 20585 U.S. Energy Information Administration | Distributed Generation System Characteristics and Costs in the Buildings Sector i This report was prepared by the U.S. Energy Information Administration (EIA), the statistical and analytical agency within the U.S. Department of Energy. By law, EIA's data, analyses, and forecasts are independent of approval by any other officer or employee of the United States Government. The views in this report therefore should not be construed as representing those of the U.S. Department of Energy or other Federal agencies.

367

Multi-building microgrids for a distributed energy future in...  

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

Multi-building microgrids for a distributed energy future in Portugal Title Multi-building microgrids for a distributed energy future in Portugal Publication Type Conference...

368

Distributed Energy Resource Optimization Using a Software as...  

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

Distributed Energy Resource Optimization Using a Software as Service (SaaS) Approach at the University of California, Davis Campus Title Distributed Energy Resource Optimization...

369

South Korea-ANL Distributed Energy Resources and Demand Side...  

Open Energy Info (EERE)

Korea-ANL Distributed Energy Resources and Demand Side Management Jump to: navigation, search Name Distributed Energy Resources and Demand Side Management in South Korea Agency...

370

Architecture Reference Design for Distributed Energy Resource Integration  

Science Conference Proceedings (OSTI)

The integration of significant distributed energy resources (DER) highlights the complexities of the smart grid. A DER system encapsulates most of the operational issues of the larger grid but often with smaller timelines for action. In addition, as the level of DER grows in a system, opportunities for localized problems to escalate into larger system issues also increase. This effort develops guidelines for deploying technology and systems that meet emerging requirements for DER communication and contro...

2010-04-30T23:59:59.000Z

371

Distributed Robust Power System State Estimation  

E-Print Network (OSTI)

Deregulation of energy markets, penetration of renewables, advanced metering capabilities, and the urge for situational awareness, all call for system-wide power system state estimation (PSSE). Implementing a centralized estimator though is practically infeasible due to the complexity scale of an interconnection, the communication bottleneck in real-time monitoring, regional disclosure policies, and reliability issues. In this context, distributed PSSE methods are treated here under a unified and systematic framework. A novel algorithm is developed based on the alternating direction method of multipliers. It leverages existing PSSE solvers, respects privacy policies, exhibits low communication load, and its convergence to the centralized estimates is guaranteed even in the absence of local observability. Beyond the conventional least-squares based PSSE, the decentralized framework accommodates a robust state estimator. By exploiting interesting links to the compressive sampling advances, the latter jointly es...

Kekatos, Vassilis

2012-01-01T23:59:59.000Z

372

Analysis of Hawaii Biomass Energy Resources for Distributed Energy Applications  

E-Print Network (OSTI)

Analysis of Hawaii Biomass Energy Resources for Distributed Energy Applications Prepared for State) concentrations on a unit energy basis for sugar cane varieties and biomass samples of Tables Table 1-A. Analyses of biomass materials found in the State of Hawaii

373

Energy distribution of Kerr spacetime using Moller energy momentum complex  

E-Print Network (OSTI)

Using the energy momentum complex given by M{\\o}ller in 1978 based on the absolute parallelism, the energy distribution in Kerr spacetime is evaluated. The energy with this spacetime is found to be the same as it was earlier evaluated using different definitions mainly based on the metric tensor.

Gamal G. L. Nashed

2005-07-12T23:59:59.000Z

374

Renewable Energy Co-Location of Distribution Facilities (Virginia) |  

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

Co-Location of Distribution Facilities (Virginia) Co-Location of Distribution Facilities (Virginia) Renewable Energy Co-Location of Distribution Facilities (Virginia) < Back Eligibility Commercial Construction Developer Fuel Distributor Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Systems Integrator Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Virginia Program Type Siting and Permitting Provider Virginia State Corporation Commission This legislation applies to distribution facilities, which include poles and wires, cables, pipelines, or other underground conduits by which a renewable generator is able to (i) supply electricity generated at its

375

Managing trust in distributed agent systems  

Science Conference Proceedings (OSTI)

Software agent technology has attracted much attention for developing various distributed systems, composed of autonomous agents interacting with one another using particular mechanisms and protocols. Such systems provide high-level reconfigurability, ... Keywords: distributed agent systems, security, situation-awareness, trust, trust management

Stephen S. Yau

2006-09-01T23:59:59.000Z

376

DAVIC - Distributed Energy Automation via Implicit Communication  

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

DAVIC - Distributed Energy Automation via Implicit Communication DAVIC - Distributed Energy Automation via Implicit Communication Speaker(s): Peter Palensky Date: January 22, 2008 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Peng Xu The electricity grid is seen as a wide-area distributed process, determined by its sub-processes - in our case the loads and distributed generation. Network-based coordination needs to be done very carefully and properly timed to avoid instabilities. Luckily, every point of the grid has the same grid frequency and the same time. Integrating these two trivial things (implicit communication) into one consistent communication model might complement a low-quality (explicit) best-effort communication channel (e.g. Internet, GPRS) for real time applications. A simulation shall clarify how

377

Optimal Network Reconfiguration for Electric Distribution Systems  

Science Conference Proceedings (OSTI)

Utility distribution systems are at the center of the smart grid revolution and, at the same time, are challenged by an aging infrastructure, legacy systems that must be integrated with new technologies, changing load characteristics (such as electric vehicles), and the requirement for integration of widespread distributed resources. Given these challenges, electricity distribution companies are under pressure to improve reliability and system performance, build the necessary infrastructure for integrati...

2012-01-31T23:59:59.000Z

378

Variability of PV on Distribution Systems  

Science Conference Proceedings (OSTI)

In 2010, the Electric Power Research Institute (EPRI) along with several utilities began collecting high-resolution monitoring data on distributed solar photovoltaic (PV) systems throughout the United States. Included in these monitoring data are single-module PV systems distributed along selected feeders as well as several larger PV systems (up to 1.4 MW). Utilizing data from these sites, this report focuses specifically on examining the measured variability of solar PV distributed throughout a ...

2012-12-13T23:59:59.000Z

379

An Australian Perspective On Distributed Energy Resources  

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

An Australian Perspective On Distributed Energy Resources An Australian Perspective On Distributed Energy Resources Speaker(s): Hugh Outhred Date: December 11, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare The seminar will describe and critique the Australian approach to incorporating distributed energy resources into its restructured electricity industry, which consists of the National Electricity Market (a wholesale electricity market), retail electricity markets, network regulation and environmental regulation. These arrangements continue to evolve and recent developments will be discussed. Hugh Outhred is in the School of Electrical Engineering & Telecommunications at the University of New South Wales, Sydney, Australia. He is also a member of the National Electricity Tribunal ( a quasi-judicial appeal body associated with

380

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

of this "thermal mixing", the heating and cooling loadsyear) Cooling Plant Heating Plant Fans Total Thermal Tobllthermal distribution system includes the components that carry the heating and cooling

Franconi, E.

2011-01-01T23:59:59.000Z

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


381

Distributed Information System Development: Review of Some ...  

Science Conference Proceedings (OSTI)

2 Management Issues in Distributed Information System ... creation and testing, to software's installation and maintenance-and even extends to the improvement ...

382

Distributionally robust control of constrained stochastic systems  

E-Print Network (OSTI)

May 1, 2013 ... Distributionally robust control of constrained stochastic systems. Bart P.G. Van Parys (bartvan ***at*** control.ee.ethz.ch) Daniel Kuhn (d.kuhn ...

383

Building a Smarter Distribution System in Pennsylvania  

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

PPL Electric Utilities Corporation Smart Grid Investment Grant 1 Building a Smarter Distribution System in Pennsylvania PPL Electric Utilities Corporation (PPL) provides...

384

Energy Distribution in f(R) Gravity  

E-Print Network (OSTI)

The well-known energy problem is discussed in f(R) theory of gravity. We use the generalized Landau-Lifshitz energy-momentum complex in the framework of metric f(R) gravity to evaluate the energy density of plane symmetric solutions for some general f(R) models. In particular, this quantity is found for some popular choices of f(R) models. The constant scalar curvature condition and the stability condition for these models are also discussed. Further, we investigate the energy distribution of cosmic string spacetime.

Sharif, M

2009-01-01T23:59:59.000Z

385

Energy Distribution in f(R) Gravity  

E-Print Network (OSTI)

The well-known energy problem is discussed in f(R) theory of gravity. We use the generalized Landau-Lifshitz energy-momentum complex in the framework of metric f(R) gravity to evaluate the energy density of plane symmetric solutions for some general f(R) models. In particular, this quantity is found for some popular choices of f(R) models. The constant scalar curvature condition and the stability condition for these models are also discussed. Further, we investigate the energy distribution of cosmic string spacetime.

M. Sharif; M. Farasat Shamir

2009-12-18T23:59:59.000Z

386

Energy monitoring system  

SciTech Connect

A system for monitoring and displaying the consumption of energy by measuring the actual energy consumed and comparing the measured energy consumption with an ideal or desired energy consumption. The desired energy consumption data may be based upon actual operations or may be generated by ideal consumption characteristics. In some instances, the ideal figures may be modified to compensate for variations in external conditions.

Bertolasi, R.B.

1976-12-21T23:59:59.000Z

387

Developing object-based distributed system  

E-Print Network (OSTI)

The OO-action systems formalism is a recent extension of action systems towards object-orientation. An OO-action system models an object-oriented system with active objects. In this paper we make the notion of a distributed object clear within this framework. Moreover, we show how object-based distributed systems are designed stepwise within a formal framework, the re nement calculus.

Marcello M. Bonsangue; Joost N. Kok; Kaisa Sere; Turku Centre; Computer Science

1999-01-01T23:59:59.000Z

388

Redhawk Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Ohio. References "Redhawk Energy Systems" Retrieved from "http:en.openei.orgwindex.php?titleRedhawkEnergySystems&oldid366032" Categories: Companies Clean Energy...

389

Definition: Deferred Distribution Capacity Investments | Open Energy  

Open Energy Info (EERE)

Deferred Distribution Capacity Investments Deferred Distribution Capacity Investments Jump to: navigation, search Dictionary.png Deferred Distribution Capacity Investments As with the transmission system, reducing the load and stress on distribution elements increases asset utilization and reduces the potential need for upgrades. Closer monitoring and load management on distribution feeders could potentially extend the time before upgrades or capacity additions are required.[1] Related Terms load, transmission lines, transmission line, sustainability References ↑ SmartGrid.gov 'Description of Benefits' An inl LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ine Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Deferred_Distribution_Capacity_Investments&oldid=502613

390

GA based energy loss minimization approach for optimal sizing & placement of distributed generation  

Science Conference Proceedings (OSTI)

Distributed Generators (DG) provide the lowest cost solution to handle low voltage or overload problems. In conjunction with such problems, a technique of energy saving is introduced by placement of distributed generation (DG) in distribution systems. ... Keywords: Distributed generation (DG), energy saving, genetic algorithms (GA), optimal sizing and placement

Deependra Singh; Devender Singh; K. S. Verma

2008-04-01T23:59:59.000Z

391

EPRI Pre-Conference Workshop: Active Distribution System Management for Integration of Distributed Resources Research, Development a nd Demonstration Needs  

Science Conference Proceedings (OSTI)

This report documents the proceedings of the EPRI Pre-Conference Workshop: Active Distribution System Management for Integration of Distributed ResourcesResearch, Development and Demonstration Needs, held December 9, 2008. This workshop presented over 20 projects related to active distribution management for distributed energy resource (DER) integration.

2009-04-27T23:59:59.000Z

392

Distributed Energy Resources for Carbon Emissions Ryan Firestone and Chris Marnay  

E-Print Network (OSTI)

LBNL-62871 Distributed Energy Resources for Carbon Emissions Mitigation Ryan Firestone and Chris by the Office of Electricity Delivery and Energy Reliability, Distribution System Integration Program of the U Laboratory is an equal opportunity employer. #12;1 Firestone 5128 Distributed Energy Resources for Carbon

393

Probing tails of energy distributions using importancesampling in the disorder with a guiding function  

E-Print Network (OSTI)

Probing tails of energy distributions using importance­sampling in the disorder with a guiding to probe to high precision the tails of ground­state energy distributions of disordered systems. Our approach requires an estimate of the ground­state energy distribution as a guiding function which can

Hartmann, Alexander K.

394

On the theory of energy distributions of products of molecular beam reactions involving transient complexes*  

E-Print Network (OSTI)

On the theory of energy distributions of products of molecular beam reactions involving transient October 1974) Theoretical energy distributions of reaction products in molecular beam systems for the energy distributions of the products when 1 > j and j > l. I. INTRODUCTION In recent years illuminating

Marcus, Rudolph A.

395

Distributed Energy Storage Product Reference Guide  

Science Conference Proceedings (OSTI)

Distribution-scale energy storage deployments have increased significantly in the last few years. These deployments have resulted in several lessons learned, and have pointed out the need for standardization and development of common industry agreed approaches to grid-scale energy storage deployments. This report documents the progress in many of these deployments and summarizes the lessons learned. In addition, the report presents a brief update on a PNNL/Sandia-lead multi stakeholder pre-standard ...

2013-12-17T23:59:59.000Z

396

Ris Energy Report 4 Distributed generation 1 What is distributed generation?  

E-Print Network (OSTI)

Risø Energy Report 4 Distributed generation 1 5 What is distributed generation? Distributed as distributed energy resources (DERs). It appears that there is no consensus on precise defi- nitions of DG. Wind energy is presently the fastest growing and largest contributor to distributed genera- tion from

397

Checkpointing Using Mobile Agents in Distributed Systems  

Science Conference Proceedings (OSTI)

Traditional message passing based checkpointing and rollback recovery algorithms perform well for tightly coupled systems. In wide area distributed systems these algorithms may suffer from large overhead due to message passing delay and network traffic. ...

Partha Sarathi Mandal; Krishnendu Mukhopadhyaya

2007-03-01T23:59:59.000Z

398

The architecture and implementation of a distributed hypermedia storage system  

Science Conference Proceedings (OSTI)

Keywords: computer-supported cooperative work (CSCW), distributed data, distributed file systems, hypertext, performance, scalability

Douglas E. Shackelford; John B. Smith; F. Donelson Smith

1993-12-01T23:59:59.000Z

399

Distributed energy resources customer adoption modeling with combined heat and power applications  

E-Print Network (OSTI)

of Microgrid Distributed Energy Resource Potential Usingon Integration of Distributed Energy Resources: The CERTSof Customer Adoption of Distributed Energy Resources. ”

Siddiqui, Afzal S.; Firestone, Ryan M.; Ghosh, Srijay; Stadler, Michael; Edwards, Jennifer L.; Marnay, Chris

2003-01-01T23:59:59.000Z

400

NREL: Energy Systems Integration - Integrated Deployment Workshop  

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

Integrated Deployment Workshop Integrated Deployment Workshop The Energy Systems Integration Facility workshop, Integrated Deployment, was held August 21 - 23, 2012 at the National Renewable Energy Laboratory in Golden, Colorado. Each day of the workshop, which included a tour of the Energy Systems Integration Facility, focused on a different topic: Day 1: Utility-Scale Renewable Integration Day 2: Distribution-Level Integration Day 3: Isolated and Islanded Grid Systems The agenda and presentations from the workshop are below. Agenda Energy Systems Integration Facility Overview ESIF Technology Partnerships Integrated Deployment Model Integrated Deployment and the Energy Systems Integration Facility: Workshop Proceedings Printable Version Energy Systems Integration Home Research & Development

Note: This page contains sample records for the topic "distributed energy systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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401

Next-Generation Distributed Power Management for Photovoltaic Systems  

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

Next-Generation Distributed Power Management for Photovoltaic Systems Next-Generation Distributed Power Management for Photovoltaic Systems Speaker(s): Jason Stauth Date: July 29, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Steven Lanzisera In recent years, the balance of systems (BOS) side of photovoltaic (PV) energy has become a major focus in the effort to drive solar energy towards grid parity. The power management architecture has expanded to include a range of distributed solutions, including microinverters and 'micro' DC-DC converters to solve problems with mismatch (shading), expand networking and control, and solve critical BOS issues such as fire safety. This talk will introduce traditional and distributed approaches for PV systems, and will propose a next-generation architecture based on a new

402

Lighting system with heat distribution face plate  

DOE Patents (OSTI)

Lighting systems having a light source and a thermal management system are provided. The thermal management system includes synthetic jet devices, a heat sink and a heat distribution face plate. The synthetic jet devices are arranged in parallel to one and other and are configured to actively cool the lighting system. The heat distribution face plate is configured to radially transfer heat from the light source into the ambient air.

Arik, Mehmet; Weaver, Stanton Earl; Stecher, Thomas Elliot; Kuenzler, Glenn Howard; Wolfe, Jr., Charles Franklin; Li, Ri

2013-09-10T23:59:59.000Z

403

Uses for Distributed Photovoltaic and Storage Systems  

Science Conference Proceedings (OSTI)

A range of factors are driving increases in the quantity of distributed photovoltaics connected to utility distribution systems. Going forward, it is anticipated that this growth will continue and that battery storage systems may also become common. These systems are expected to be both customer and utility owned. In either case, there is interest in understanding the full range of ways in which these systems might be used to maximize their value, to enable their integration in large numbers, and to opti...

2010-12-23T23:59:59.000Z

404

Scalable data management in distributed information systems  

Science Conference Proceedings (OSTI)

In the era of cloud computing and huge information systems, distributed applications should manage dynamic workloads; i.e., the amount of client requests per time unit may vary frequently and servers should rapidly adapt their computing efforts to those ... Keywords: NoSQL, cloud computing, data management, distributed system, high availability, scalability

M. Remedios Pallardó-Lozoya; Javier Esparza-Peidro; José-Ramón García-Escrivá; Hendrik Decker; Francesc D. Muñoz-Escoí

2011-10-01T23:59:59.000Z

405

Hybrid solar lighting distribution systems and components  

Science Conference Proceedings (OSTI)

A hybrid solar lighting distribution system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates all components.

Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

2011-07-05T23:59:59.000Z

406

Evaluation Framework and Tools for Distributed Energy Resources  

E-Print Network (OSTI)

Glossary Executive Summary Introduction Total Societal Impact Framework i iii v vii Effects of Distributed Energy

Gumerman, Etan Z.; Bharvirkar, Ranjit R.; LaCommare, Kristina Hamachi; Marnay, Chris

2003-01-01T23:59:59.000Z

407

U.S. Energy Information Administration | Annual Coal Distribution...  

U.S. Energy Information Administration (EIA) Indexed Site

U.S. Energy Information Administration | Annual Coal Distribution Report 2011 By Coal Destination State ...

408

Quantitative Assessment of Distributed Energy Resource Benefits  

Science Conference Proceedings (OSTI)

Distributed energy resources (DER) offer many benefits, some of which are readily quantified. Other benefits, however, are less easily quantifiable because they may require site-specific information about the DER project or analysis of the electrical system to which the DER is connected. The purpose of this study is to provide analytical insight into several of the more difficult calculations, using the PJM power pool as an example. This power pool contains most of Pennsylvania, New Jersey, Maryland, and Delaware. The techniques used here could be applied elsewhere, and the insights from this work may encourage various stakeholders to more actively pursue DER markets or to reduce obstacles that prevent the full realization of its benefits. This report describes methodologies used to quantify each of the benefits listed in Table ES-1. These methodologies include bulk power pool analyses, regional and national marginal cost evaluations, as well as a more traditional cost-benefit approach for DER owners. The methodologies cannot however determine which stakeholder will receive the benefits; that must be determined by regulators and legislators, and can vary from one location to another.

Hadley, S.W.

2003-05-22T23:59:59.000Z

409

Distribution System Cyber Security Architecture  

Science Conference Proceedings (OSTI)

The National Institute of Standards and Technology (NIST) has developed the NISTIR 7628: Guidelines for Smart Grid Cyber Security, while ASAP-SG has developed both the Security Profile for AMI (v2.0) and the Security Profile for Distribution Management. These documents are necessarily high level and generic, covering a broad range of smart grid assets, and focus exclusively on determining the security requirements. However, utilities and their vendors often cannot get a clear picture of what existing tec...

2010-12-31T23:59:59.000Z

410

Generation, distribution and utilization of electrical energy  

SciTech Connect

An up-to-date account of electric power generation and distribution (including coverage of the use of computers in various components of the power system). Describes conventional and unconventional methods of electricity generation and its economics, distribution methods, substation location, electric drives, high frequency power for induction and heating, illumination engineering, and electric traction. Each chapter contains illustrative worked problems, exercises (some with answers), and a bibliography.

Wadhwa, C.L.

1989-01-01T23:59:59.000Z

411

Exploring Distributed Energy Alternatives to Electrical Distribution Grid Expansion in Souhern California Edison Service Territory  

Science Conference Proceedings (OSTI)

Distributed energy (DE) technologies have received much attention for the energy savings and electric power reliability assurances that may be achieved by their widespread adoption. Fueling the attention have been the desires to globally reduce greenhouse gas emissions and concern about easing power transmission and distribution system capacity limitations and congestion. However, these benefits may come at a cost to the electric utility companies in terms of lost revenue and concerns with interconnection on the distribution system. This study assesses the costs and benefits of DE to both consumers and distribution utilities and expands upon a precursory study done with Detroit Edison (DTE)1, by evaluating the combined impact of DE, energy-efficiency, photovoltaics (a use of solar energy), and demand response that will shape the grid of the future. This study was funded by the U.S. Department of Energy (DOE), Gas Research Institute (GRI), American Electric Power (AEP), and Gas Technology Institute's (GTI) Distributed Energy Collaborative Program (DECP). It focuses on two real Southern California Edison (SCE) circuits, a 13 MW suburban circuit fictitiously named Justice on the Lincoln substation, and an 8 MW rural circuit fictitiously named Prosper on the Washington Substation. The primary objectives of the study were threefold: (1) Evaluate the potential for using advanced energy technologies, including DE, energy-efficiency (EE), demand response, electricity storage, and photovoltaics (PV), to reshape electric load curves by reducing peak demand, for real circuits. (2) Investigate the potential impact on guiding technology deployment and managing operation in a way that benefits both utilities and their customers by: (a) Improving grid load factor for utilities; (b) Reducing energy costs for customers; and (c) Optimizing electric demand growth. (3) Demonstrate benefits by reporting on a recently installed advanced energy system at a utility customer site. This study showed that advanced energy technologies are economical for many customers on the two SCE circuits analyzed, providing certain customers with considerable energy cost savings. Using reasonable assumptions about market penetration, the study showed that adding distributed generation would reduce peak demand on the two circuits enough to defer the need to upgrade circuit capacity. If the DE is optimally targeted, the deferral could economically benefit SCE, with cost savings that outweigh the lost revenues due to lower sales of electricity. To a lesser extent, economically justifiable energy-efficiency, photovoltaic technologies, and demand response could also help defer circuit capacity upgrades by reducing demand.

Stovall, Therese K [ORNL; Kingston, Tim [Gas Technology Institute

2005-12-01T23:59:59.000Z

412

Lighting Group: Light Distribution Systems  

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

Retrofit Alternatives to Incandescent Downlights Hotel and Institutional Bathroom Lighting Portable Office Lighting Systems Low Glare Outdoor Retrofit Luminaire LED Luminaires...

413

Federal Energy Management Program: Market Studies for Distributed...  

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

Energy Resources and Combined Heat and Power to someone by E-mail Share Federal Energy Management Program: Market Studies for Distributed Energy Resources and Combined...

414

Angular Energy Distribution of Collapsar-Jets  

E-Print Network (OSTI)

Collapsars are fast-spinning, massive stars, whose core collapse liberates an energy, that can be channeled in the form of ultrarelativistic jets. These jets transport the energy from the collapsed core to large distances, where it is dissipated in the form of long-duration gamma-ray bursts. In this paper we study the dynamics of ultrarelativistic jets produced in collapsars. Also we extrapolate our results to infer the angular energy distribution of the produced outflows in the afterglow phase. Our main focus is to look for global energetical properties which can be imprinted by the different structure of different progenitor stars. Thus, we employ a number of pre-supernova, stellar models (with distinct masses and metallicities), and inject in all of them jets with fixed initial conditions. We assume that at the injection nozzle, the jet is mildly relativistic (Lorentz factor $\\sim 5$), has a finite half-opening angle ($5^\\circ$), and carries a power of $10^{51} $erg s$^{-1}$. These jets arrive intact to the stellar surface and break out of it. A large Lorentz factor region $\\Gamma\\simmore 100$ develops well before the jet reaches the surface of the star, in the unshocked part of the beam, located between the injection nozzle and the first recollimation shock. These high values of $\\Gamma$ are possible because the finite opening angle of the jet allows for free expansion towards the radial direction. We find a strong correlation between the angular energy distribution of the jet, after its eruption from the progenitor surface, and the mass of the progenitors. The angular energy distribution of the jets from light progenitor models is steeper than that of the jets injected in more massive progenitor stars. This trend is also imprinted in the angular distribution of isotropic equivalent energy.

Akira Mizuta; Miguel A. Aloy

2008-12-28T23:59:59.000Z

415

Energy Storage and Distributed Energy Generation Project, Final Project Report  

Science Conference Proceedings (OSTI)

This report serves as a Final Report under the “Energy Storage and Distribution Energy Generation Project” carried out by the Transportation Energy Center (TEC) at the University of Michigan (UM). An interdisciplinary research team has been working on fundamental and applied research on: -distributed power generation and microgrids, -power electronics, and -advanced energy storage. The long-term objective of the project was to provide a framework for identifying fundamental research solutions to technology challenges of transmission and distribution, with special emphasis on distributed power generation, energy storage, control methodologies, and power electronics for microgrids, and to develop enabling technologies for novel energy storage and harvesting concepts that can be simulated, tested, and scaled up to provide relief for both underserved and overstressed portions of the Nation’s grid. TEC’s research is closely associated with Sections 5.0 and 6.0 of the DOE "Five-year Program Plan for FY2008 to FY2012 for Electric Transmission and Distribution Programs, August 2006.”

Schwank, Johannes; Mader, Jerry; Chen, Xiaoyin; Mi, Chris; Linic, Suljo; Sastry, Ann Marie; Stefanopoulou, Anna; Thompson, Levi; Varde, Keshav

2008-03-31T23:59:59.000Z

416

A Bio-Based Fuel Cell for Distributed Energy Generation  

DOE Green Energy (OSTI)

The technology we propose consists primarily of an improved design for increasing the energy density of a certain class of bio-fuel cell (BFC). The BFCs we consider are those which harvest electrons produced by microorganisms during their metabolism of organic substrates (e.g. glucose, acetate). We estimate that our technology will significantly enhance power production (per unit volume) of these BFCs, to the point where they could be employed as stand-alone systems for distributed energy generation.

Anthony Terrinoni; Sean Gifford

2008-06-30T23:59:59.000Z

417

Avoiding Distribution System Upgrade Costs Using Distributed Generation  

Science Conference Proceedings (OSTI)

PNNL, in cooperation with three utilities, developed a database and methodology to analyze and characterize the avoided costs of Distributed Generation (DG) deployment as an alternative to traditional distribution system investment. After applying a number of screening criteria to the initial set of 307 cases, eighteen were selected for detailed analysis. Alternative DG investment scenarios were developed for these cases to permit capital, operation, maintenance, and fuel costs to be identified and incorporated into the analysis. The “customer-owned” backup power generator option was also investigated. The results of the analysis of the 18 cases show that none yielded cost savings under the alternative DG scenarios. However, the DG alternative systems were configured using very restrictive assumptions concerning reliability, peak rating, engine types and acceptable fuel. In particular it was assumed that the DG alternative in each case must meet the reliability required of conventional distribution systems (99.91% reliability). The analysis was further constrained by a requirement that each substation meet the demands placed upon it by a one in three weather occurrence. To determine if, by relaxing these requirements, the DG alternative might be more viable, one project was re-examined. The 99.91% reliability factor was still assumed for normal operating conditions but redundancy required to maintain reliability was relaxed for the relatively few hours every three years where extreme weather caused load to exceed present substation capacity. This resulted in the deferment of capital investment until later years and reduced the number of engines required for the project. The cost of both the conventional and DG alternative also dropped because the centralized power generation, variable O&M, and DG fuels costs were calculated based on present load requirements in combination with long-term forecasts of load growth, as opposed to load requirements plus a buffer based on predictions of extraordinary weather conditions. Application of the relaxed set of assumptions reduced the total cost of the DG alternative by roughly 57 percent from $7.0 million to $3.0 million. The reduction, however, did not change the overall result of the analysis, as the cost of the conventional distribution system upgrade alternative remained lower at $1.7 million. This paper also explores the feasibility of using a system of backup generators to defer investment in distribution system infrastructure. Rather than expanding substation capacity at substations experiencing slow load growth rates, PNNL considered a scenario where diesel generators were installed on location at customers participating in a program designed to offer additional power security and reliability to the customer and connection to the grid. The backup generators, in turn, could be used to meet peak demand for a limited number of hours each year, thus deferring distribution system investment. Data from an existing program at one of the three participating utilities was used to quantify the costs associated with the backup generator scenario. The results of the “customer owned” backup power generator analysis showed that in all cases the nominal cost of the DG scenario is more than the nominal cost of the base-case conventional distribution system upgrade scenario. However, in two of the cases the total present value costs of the alternative backup generator scenarios were between 15 and 22% less than those for the conventional scenarios. Overall, the results of the study offer considerable encouragement that the use of DG systems can defer conventional distribution system upgrades under the right conditions and when the DG configurations are intelligently designed. Using existing customer-owned DG to defer distribution system upgrades appears to be an immediate commercially-viable opportunity.

Schienbein, Lawrence A.; Balducci, Patrick J.; Nguyen, Tony B.; Brown, Daryl R.; DeSteese, John G.; Speer, Gregory A.

2004-01-20T23:59:59.000Z

418

Interconnection Standards Guide Integration of Distributed Energy...  

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

Resources Across the United States, energy circles are buzzing about the promise of the smart grid-the digital electric power system that holds the potential to reduce greenhouse...

419

Solar energy system  

SciTech Connect

A solar energy system is described for selectively absorbing or reflecting radiant energy entering through a window of a structure, the system comprising a window drape having a decorative side and a back side, and a removable liner adjacent the backside of the window drape. At least one side of the liner or window drape backside is a radiant energy reflecting surface and another of said sides is a radiant energy absorbing surface. Thus, depending upon the season of the year, the system may be arranged to selectively provide the appropriate surface to optimize or minimize the radiant energy maintained within the structure.

Mole, R.A.

1977-05-03T23:59:59.000Z

420

Distributed Energy Resources On-Site Optimization for Commercial Buildings with Electric and Thermal Storage Technologies  

E-Print Network (OSTI)

Systems, forthcoming 2008. Microgrid Symposium. Held atand carbon emissions, a microgrid’s distributed energyIn this paper, a microgrid is defined as a cluster of

Stadler, Michael

2008-01-01T23:59:59.000Z

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


421

Distributed Resource Cost Impacts on Transmission and Distribution Systems  

Science Conference Proceedings (OSTI)

This report examines distributed resource (DR) cost impacts on transmission and distribution (T&D) systems. It reviews and documents the cost structure of traditional T&D infrastructure and of DR technologies. It also shows economic analyses using the above costs for cases where DR is applied to solve T&D infrastructure problems and discusses the potential for DR to strand existing T&D investment. Finally, the report provides informative and interesting studies of cases in which utilities have used DR to...

2001-11-28T23:59:59.000Z

422

Nuclear Energy Systems  

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

Role of Synchrotron Radiation in Solving Scientific Challenges in Advanced Nuclear Energy Systems 27 to 28 January 2010 at Argonne's Advanced Photon Source Scope Third-generation...

423

Definition: Distribution Automation Communications Network | Open Energy  

Open Energy Info (EERE)

Automation Communications Network Automation Communications Network Jump to: navigation, search Dictionary.png Distribution Automation Communications Network A communications network or networks designed to deliver control signals and information between distribution automation devices, and between these devices and utility grid control systems. These networks can utilize wired or wireless connections, and can be utility-owned or provided as services by a third party.[1] Related Terms distribution automation References ↑ https://www.smartgrid.gov/category/technology/distribution_automation_communications_network [[C LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ategory: Smart Grid Definitionssmart grid,smart grid, |Template:BASEPAGENAME]]smart grid,smart grid, Retrieved from

424

Energy Automation Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Energy Automation Systems Inc Energy Automation Systems Inc Jump to: navigation, search Name Energy Automation Systems Inc. Place Hendersonville, Tennessee Zip 37075 Sector Buildings, Efficiency Product An energy efficiency consultancy firm focusing on analysis of energy consumption in buildings and providing improvments in the efficiency of the distribution system and equipment loads, similar to an ESCO. Coordinates 36.304861°, -86.620214° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.304861,"lon":-86.620214,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

425

Distribution load study aids system planning  

SciTech Connect

The Walnut Metering Project is an experimental substation and distribution system metering installation designed to provide quantitative data for distribution system planning. The design and operation of the metering equipment are discussed. After 3 years of operation it was concluded that the primary economic benefits anticipated from the determination of substation area diversity characteristics did not materialize because the peaking characteristics of the substations in the area were typically coincident with each other. However, the data obtained had a significant positive impact, both economically and operationally, in the field of equipment loadability, and is beneficial to activities related to load projections and distribution system planning. (LCL)

Scofield J.M.

1976-07-01T23:59:59.000Z

426

Unitil Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Systems Systems Jump to: navigation, search Name Unitil Energy Systems Place New Hampshire Utility Id 24590 Utility Location Yes Ownership I NERC Location NPCC NERC NPCC Yes ISO NE Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png D Domestic Rate Residential G1 Large General Service Commercial G2 General Service Commercial Average Rates Residential: $0.0576/kWh Commercial: $0.0510/kWh Industrial: $0.1210/kWh The following table contains monthly sales and revenue data for Unitil

427

Optimal Design of Overhead Distribution Systems  

Science Conference Proceedings (OSTI)

It is not uncommon for overhead distribution conductors to make contact with trees. These incidental contacts can be either intermittent or relatively persistent, are typically not detectable by overcurrent protection systems, and typically do not result in interruptions on distributions circuits. This project focuses on assessing voltage gradients and fault currents created when trees come into contact with distribution conductors, allowing current to flow through the tree from point of contact to earth...

2007-12-19T23:59:59.000Z

428

Steam distribution and energy delivery optimization using wireless sensors  

Science Conference Proceedings (OSTI)

The Extreme Measurement Communications Center at Oak Ridge National Laboratory (ORNL) explores the deployment of a wireless sensor system with a real-time measurement-based energy efficiency optimization framework in the ORNL campus. With particular focus on the 12-mile long steam distribution network in our campus, we propose an integrated system-level approach to optimize the energy delivery within the steam distribution system. We address the goal of achieving significant energy-saving in steam lines by monitoring and acting on leaking steam valves/traps. Our approach leverages an integrated wireless sensor and real-time monitoring capabilities. We make assessments on the real-time status of the distribution system by mounting acoustic sensors on the steam pipes/traps/valves and observe the state measurements of these sensors. Our assessments are based on analysis of the wireless sensor measurements. We describe Fourier-spectrum based algorithms that interpret acoustic vibration sensor data to characterize flows and classify the steam system status. We are able to present the sensor readings, steam flow, steam trap status and the assessed alerts as an interactive overlay within a web-based Google Earth geographic platform that enables decision makers to take remedial action. We believe our demonstration serves as an instantiation of a platform that extends implementation to include newer modalities to manage water flow, sewage and energy consumption.

Olama, Mohammed M [ORNL; Allgood, Glenn O [ORNL; Kuruganti, Phani Teja [ORNL; Sukumar, Sreenivas R [ORNL; Djouadi, Seddik M [ORNL; Lake, Joe E [ORNL

2011-01-01T23:59:59.000Z

429

Energy-Momentum Distribution in Weyl Metrics  

E-Print Network (OSTI)

In this paper, we evaluate energy and momentum density distributions for the Weyl metric by using the well-known prescriptions of Einstein, Landau-Lifshitz, Papaterou and M$\\ddot{o}$ller. The metric under consideration is the static axisymmetric vacuum solution to the Einstein field equations and one of the field equations represents the Laplace equation. Curzon metric is the special case of this spacetime. We find that the energy density is different for each prescription. However, momentum turns out to be constant in each case.

M. Sharif; Tasnim Fatima

2005-07-16T23:59:59.000Z

430

Energy Basics: Photovoltaic Systems  

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

an entire PV system. This system is usually everything needed to meet a particular energy demand, such as powering a water pump, the appliances and lights in a home, or-if the...

431

Electricity Distribution Systems: How Information Will Lead the Transformation  

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

IBM IBM Electricity Distribution Systems How information will lead the transformation Allan Schurr VP Energy and Utilities 24 September 2012 Corporation Challenges facing the energy grid New entrants and disruptive technologies environmental concerns Increased pressure on Climate change and Aging asset performance operational efficiency with increased expectations and workforce on reliability productivity Increasing desire by consumers for a role in energy management and Growth in renewable generation and distributed resources conservation © 2012 IBM Corporation 2 Other transformed industries have lessons for the power grid Common Themes * Technology innovation * Disruptive new entrants * New business models Benefits for the consumer © 2012 IBM Corporation

432

ENERGY DISTRIBUTION OF FAST NEUTRON BEAM  

DOE Green Energy (OSTI)

Experimental techniques are described for the spectral measurement of a collimated fast-neutron beam. A H/sub 2-/ filled cloud chamber, proton-recording nuclear plates, and threshold fission foils were used as neutron detectors in the measurements. As an application of these techniques, the energy distribution and absolute flux of the fast neutron beam emerging from the Los Alamos fast reactor was measured from 0.1 to 18 Mev. (D.E.B.)

Nereson, N.; Allison, E.; Carlson, J.; Norwood, P.; Squires, D.

1951-02-15T23:59:59.000Z

433

Lloyd Energy Systems | Open Energy Information  

Open Energy Info (EERE)

high-purity graphite blocks to store energy (particularly solar energy) as heat, with steam turbines to release the heat as electricity. References Lloyd Energy Systems1...

434

Massively distributed systems: design issues and challenges  

Science Conference Proceedings (OSTI)

The forty year trend in the computing industry is away from centralized, high unit cost, low unit volume products toward distributed, low unit cost, high unit volume products. The next step in this process is the emergence of massively distributed systems. ...

Dan Nessett

1999-03-01T23:59:59.000Z

435

Large Distributed Energy Resource Options to Alleviate Transmission Constraints  

Science Conference Proceedings (OSTI)

Utility transmission systems require extensive investment for infrastructure upkeep. In addition, load growth requires upgrades to guard against overloading or loss of load. In some situations, an investment in a traditional transmission system upgrade may not be the most economic option. It may be possible to defer the need for an upgrade using distributed energy resources (DER), and in doing so, reduce the economic impact to the utility and its ratepayers. Additional considerations, such as impact on s...

2006-02-15T23:59:59.000Z

436

A deployed multi-agent framework for distributed energy applications  

Science Conference Proceedings (OSTI)

In this paper, we describe the adaptation of an open-source multi-agent platform for distributed energy applications and the trial deployment of resource-controller agents. The platform provides real-time, two-way communication and decision making between ... Keywords: applications of autonomous agents and multi-agent systems, collective and emergent agent behavior, frameworks, infrastructures and environments for agent systems

Geoff James; Dave Cohen; Robert Dodier; Glenn Platt; Doug Palmer

2006-05-01T23:59:59.000Z

437

Distributed Energy Resources Integration in the Smart Grid Demonstration Project  

Science Conference Proceedings (OSTI)

In an effort to answer some of the basic system architecture questions posed by members, EPRI undertook a survey to find, among members that have smart grid demonstration projects, what the basic system architecture strategy was and basic concerns that may have architectural implications for their Distributed Energy Resource (DER) deployments. To that end, a longitudinal survey was designed to determine the basic demographics of the community, e.g. number of DER devices being deployed, the basic ...

2012-11-14T23:59:59.000Z

438

Distributed redundancy and robustness in complex systems  

Science Conference Proceedings (OSTI)

The uptake and increasing prevalence of Web 2.0 applications, promoting new large-scale and complex systems such as Cloud computing and the emerging Internet of Services/Things, requires tools and techniques to analyse and model methods to ensure the ... Keywords: Algebraic connectivity, Distributed redundancy, Observer system, System robustness

Martin Randles; David Lamb; E. Odat; A. Taleb-Bendiab

2011-03-01T23:59:59.000Z

439

Intelligent robust control of hybrid distributed generation system under voltage sag  

Science Conference Proceedings (OSTI)

In this paper, design of control strategy for hybrid fuel cell/energy storage distributed power generation system during voltage sag has been presented. The proposed control strategy allows hybrid distributed generation system works properly when a voltage ... Keywords: Energy storage, Fuel cell, Fuzzy sliding control, Hybrid distributed generation, Lyapanov, Neuro-fuzzy, Voltage sag

Amin Hajizadeh; Masoud Aliakbar Golkar

2010-12-01T23:59:59.000Z

440

Solar Energy System Exemption | Department of Energy  

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

Energy System Exemption Solar Energy System Exemption Eligibility Residential Savings For Heating & Cooling Commercial Heating & Cooling Solar Heating Buying & Making Electricity...

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


441

Rand Solar Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Rand Solar Energy Systems Jump to: navigation, search Name Rand Solar Energy Systems Place Petach Tikva, Israel Zip 49130 Sector Solar Product Israel-based manufacturer and...

442

American Energy Systems Inc | Open Energy Information  

Open Energy Info (EERE)

navigation, search Name American Energy Systems Inc Place Minnesota Zip 55350 Product Biofuel burning appliance manufacturer (pellets & corn). References American Energy Systems...

443

Renewable Energy Systems | Clean Energy | ORNL  

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

Renewable Energy Systems SHARE Renewable Energy Systems Develop methods and models, conduct analyses and produce tools that address the potential and sustainability of biomass...

444

Renewable Energy Systems Americas | Open Energy Information  

Open Energy Info (EERE)

Americas Jump to: navigation, search Name Renewable Energy Systems Americas Place Broomfield, CO Website http:www.res-americas.com References Renewable Energy Systems...

445

Apollo Energy Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Systems Inc Place Pompano Beach, Florida Zip FLA 33069 Sector Hydro, Hydrogen, Renewable Energy Product Apollo Energy Systems is a developer, producer, marketor and licensor of new...

446

Slack bus modeling for distributed generation and its impacts on distribution system analysis, operation and planning.  

E-Print Network (OSTI)

??Distribution system operating environments are changing rapidly. Proper distributed generation placement and operating will bring benefits for supporting voltage, reducing system loss, enhancing system reliability,… (more)

Tong, Shiqiong

2007-01-01T23:59:59.000Z

447

AC distribution system for TFTR pulsed loads  

DOE Green Energy (OSTI)

This paper outlines the AC distribution system associated with the Tokamak Fusion Test Reactor and discusses the significant areas related to design, protection, and equipment selection, particularly where there is a departure from normal utility and industrial applications.

Carroll, R.F.; Ramakrishnan, S.; Lemmon, G.N.; Moo, W.I.

1977-01-01T23:59:59.000Z

448

Integration of Distributed Resources in Electric Utility Distribution Systems: Distribution System Behavior Analysis for Urban and R ural Feeders  

Science Conference Proceedings (OSTI)

Accelerating commercialization of distributed resources (DR) has created the need for improved practices for integrating them with electric utility distribution systems. Analytical models of DR were developed for use in existing utility system simulation tools, and case studies on a rural and an urban distribution feeder were performed to assess the impacts of DR in various scenarios for those feeders.

1999-11-11T23:59:59.000Z

449

Integration of Distributed Resources in the Electric Utility Distribution Systems: Distribution System Behavior Analysis for Suburba n Feeder  

Science Conference Proceedings (OSTI)

Accelerating commercialization of distributed resources (DR) has created the need to improve practices for integrating them with electric utility distribution systems. Analytical models of DR were developed for use in existing utility system simulation tools, and initial case studies on a suburban distribution feeder were performed to assess the impacts of DR in various scenarios for that feeder.

1998-12-15T23:59:59.000Z

450

An analysis of distributed solar fuel systems  

E-Print Network (OSTI)

While solar fuel systems offer tremendous potential to address global clean energy needs, most existing analyses have focused on the feasibility of large centralized systems and applications. Not much research exists on ...

Thomas, Alex, S.M. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

451

Distributed Energy Resources at Naval Base Ventura County Building 1512  

E-Print Network (OSTI)

LBNL-55340 Distributed Energy Resources at Naval Base Ventura County Building 1512 Prepared, of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. #12;Distributed Energy Resources and the Distributed Energy Program of DOE also provided prior funding to develop and validate the DER-CAM model

452

Distributed Generation System Characteristics and Costs in the Buildings  

Gasoline and Diesel Fuel Update (EIA)

1.6 mb) 1.6 mb) Appendix A - Photovoltaic (PV) Cost and Performance Characteristics for Residential and Commercial Applications (1.0 mb) Appendix B - The Cost and Performance of Distributed Wind Turbines, 2010-35 (0.5 mb) Distributed Generation System Characteristics and Costs in the Buildings Sector Release date: August 7, 2013 Distributed generation in the residential and commercial buildings sectors refers to the on-site generation of energy, often electricity from renewable energy systems such as solar photovoltaics (PV) and small wind turbines. Many factors influence the market for distributed generation, including government policies at the local, state, and federal level, and project costs, which vary significantly depending on time, location, size, and application.

453

NREL: Energy Analysis - Distributed Generation Energy Technology Capital  

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

Capital Costs Capital Costs Transparent Cost Database Button The following charts indicate recent capital cost estimates for distributed generation (DG) renewable energy technologies. The estimates are shown in dollars per installed kilowatt of generating capacity or thermal energy capacity for thermal technologies. The charts provide a compilation of available national-level cost data from a variety of sources. Costs in your specific location will vary. The red horizontal lines represent the first standard deviation of the mean. The U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) sponsored the distributed generation data used within these charts. If you are seeking utility-scale technology capital cost estimates, please visit the Transparent Cost Database website for NREL's information

454

Brief Energy-based control of a distributed solar collector field  

Science Conference Proceedings (OSTI)

Model-based control of the outlet temperature of a distributed solar collector field is studied. An energy-based controller is derived using internal energy as a controlled variable. The controller relies on a distributed parameter nonlinear plant model ... Keywords: Distributed parameter systems, Model-based control, Nonlinear control, Solar power

Tor A. Johansen; Camilla Storaa

2002-07-01T23:59:59.000Z

455

Evaluation of Potential Bulk System Reliability Impacts of Distributed Resources  

Science Conference Proceedings (OSTI)

In recent years, distributed energy resources (DER) penetration has increased, but projections for penetration over the next 10 years show dramatic increases. Much of this is made up of distributed solar photovoltaic (PV) power, which is estimated to expand significantly in the United States in coming years. This project describes how methods to assess bulk system reliability might need to be altered to account for increasing levels of DER, particularly PV. It also aims to produce mitigating strategies t...

2011-12-21T23:59:59.000Z

456

Princeton Energy Systems PES | Open Energy Information  

Open Energy Info (EERE)

PES PES Jump to: navigation, search Name Princeton Energy Systems (PES) Place Philadelphia, Pennsylvania Zip PA 19118 Sector Efficiency, Services, Solar Product US-based energy services that combines distributed power generation (solar electric and combined heat and power) with traditional energy efficiency technologies. Coordinates 39.95227°, -75.162369° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.95227,"lon":-75.162369,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

457

Commercial thermal distribution systems, Final report for CIEE/CEC  

Science Conference Proceedings (OSTI)

According to the California Energy Commission (CEC 1998a), California commercial buildings account for 35% of statewide electricity consumption, and 16% of statewide gas consumption. Space conditioning accounts for roughly 16,000 GWh of electricity and 800 million therms of natural gas annually, and the vast majority of this space conditioning energy passes through thermal distribution systems in these buildings. In addition, 8600 GWh per year is consumed by fans and pumps in commercial buildings, most of which is used to move the thermal energy through these systems. Research work at Lawrence Berkeley National Laboratory (LBNL) has been ongoing over the past five years to investigate the energy efficiency of these thermal distribution systems, and to explore possibilities for improving that energy efficiency. Based upon that work, annual savings estimates of 1 kWh/ft{sup 2} for light commercial buildings, and 1-2 kWh/ft{sup 2} in large commercial buildings have been developed for the particular aspects of thermal distribution system performance being addressed by this project. Those savings estimates, combined with a distribution of the building stock based upon an extensive stock characterization study (Modera et al. 1999a), and technical penetration estimates, translate into statewide saving potentials of 2000 GWh/year and 75 million thermal/year, as well as an electricity peak reduction potential of 0.7 GW. The overall goal of this research program is to provide new technology and application knowledge that will allow the design, construction, and energy services industries to reduce the energy waste associated with thermal distribution systems in California commercial buildings. The specific goals of the LBNL efforts over the past year were: (1) to advance the state of knowledge about system performance and energy losses in commercial-building thermal distribution systems; (2) to evaluate the potential of reducing thermal losses through duct sealing, duct insulation, and improved equipment sizing; and (3) to develop and evaluate innovative techniques applicable to large buildings for sealing ducts and encapsulating internal duct insulation. In the UCB fan project, the goals were: (1) to develop a protocol for testing, analyzing and diagnosing problems in large commercial building built-up air handling systems, and (2) to develop low-cost measurement techniques to improve short term monitoring practices. To meet our stated goals and objectives, this project: (1) continued to investigate and characterize the performance of thermal distribution systems in commercial buildings; (2) performed energy analyses and evaluation for duct-performance improvements for both small and large commercial buildings; (3) developed aerosol injection technologies for both duct sealing and liner encapsulation in commercial buildings; and (4) designed energy-related diagnostic protocols based on short term measurement and used a benchmarking database to compare subject systems with other measured systems for certain performance metrics. This year's efforts consisted of the following distinct tasks: performing characterization measurements for five light commercial building systems and five large-commercial-building systems; analyzing the potential for including duct performance in California's Energy Efficiency Standards for Residential and Non-Residential Buildings (Title 24), including performing energy and equipment sizing analyses of air distribution systems using DOE 2.1E for non-residential buildings; conducting laboratory experiments, field experiments, and modeling of new aerosol injection technologies concepts for sealing and coating, including field testing aerosol-based sealing in two large commercial buildings; improving low-cost fan monitoring techniques measurements, and disseminating fan tools by working with energy practitioners directly where possible and publishing the results of this research and the tools developed on a web-site. The final report consists of five sections listed below. Each section includes its related

Xu, Tengfang; Bechu, Olivier; Carrie, Remi; Dickerhoff, Darryl; Fisk, William; Franconi, Ellen; Kristiansen, Oyvind; Levinson, Ronnen; McWilliams, Jennifer; Wang, Duo; Modera, Mark; Webster, Tom; Ring, Erik; Zhang, Qiang; Huizenga, Charlie; Bauman, Fred; Arens, Ed

1999-12-01T23:59:59.000Z

458

Commercial thermal distribution systems, Final report for CIEE/CEC  

SciTech Connect

According to the California Energy Commission (CEC 1998a), California commercial buildings account for 35% of statewide electricity consumption, and 16% of statewide gas consumption. Space conditioning accounts for roughly 16,000 GWh of electricity and 800 million therms of natural gas annually, and the vast majority of this space conditioning energy passes through thermal distribution systems in these buildings. In addition, 8600 GWh per year is consumed by fans and pumps in commercial buildings, most of which is used to move the thermal energy through these systems. Research work at Lawrence Berkeley National Laboratory (LBNL) has been ongoing over the past five years to investigate the energy efficiency of these thermal distribution systems, and to explore possibilities for improving that energy efficiency. Based upon that work, annual savings estimates of 1 kWh/ft{sup 2} for light commercial buildings, and 1-2 kWh/ft{sup 2} in large commercial buildings have been developed for the particular aspects of thermal distribution system performance being addressed by this project. Those savings estimates, combined with a distribution of the building stock based upon an extensive stock characterization study (Modera et al. 1999a), and technical penetration estimates, translate into statewide saving potentials of 2000 GWh/year and 75 million thermal/year, as well as an electricity peak reduction potential of 0.7 GW. The overall goal of this research program is to provide new technology and application knowledge that will allow the design, construction, and energy services industries to reduce the energy waste associated with thermal distribution systems in California commercial buildings. The specific goals of the LBNL efforts over the past year were: (1) to advance the state of knowledge about system performance and energy losses in commercial-building thermal distribution systems; (2) to evaluate the potential of reducing thermal losses through duct sealing, duct insulation, and improved equipment sizing; and (3) to develop and evaluate innovative techniques applicable to large buildings for sealing ducts and encapsulating internal duct insulation. In the UCB fan project, the goals were: (1) to develop a protocol for testing, analyzing and diagnosing problems in large commercial building built-up air handling systems, and (2) to develop low-cost measurement techniques to improve short term monitoring practices. To meet our stated goals and objectives, this project: (1) continued to investigate and characterize the performance of thermal distribution systems in commercial buildings; (2) performed energy analyses and evaluation for duct-performance improvements for both small and large commercial buildings; (3) developed aerosol injection technologies for both duct sealing and liner encapsulation in commercial buildings; and (4) designed energy-related diagnostic protocols based on short term measurement and used a benchmarking database to compare subject systems with other measured systems for certain performance metrics. This year's efforts consisted of the following distinct tasks: performing characterization measurements for five light commercial building systems and five large-commercial-building systems; analyzing the potential for including duct performance in California's Energy Efficiency Standards for Residential and Non-Residential Buildings (Title 24), including performing energy and equipment sizing analyses of air distribution systems using DOE 2.1E for non-residential buildings; conducting laboratory experiments, field experiments, and modeling of new aerosol injection technologies concepts for sealing and coating, including field testing aerosol-based sealing in two large commercial buildings; improving low-cost fan monitoring techniques measurements, and disseminating fan tools by working with energy practitioners directly where possible and publishing the results of this research and the tools developed on a web-site. The final report consists of five sections listed below. Each section includes its related

Xu, Tengfang; Bechu, Olivier; Carrie, Remi; Dickerhoff, Darryl; Fisk, William; Franconi, Ellen; Kristiansen, Oyvind; Levinson, Ronnen; McWilliams, Jennifer; Wang, Duo; Modera, Mark; Webster, Tom; Ring, Erik; Zhang, Qiang; Huizenga, Charlie; Bauman, Fred; Arens, Ed

1999-12-01T23:59:59.000Z

459

Nord Distribution Solaire | Open Energy Information  

Open Energy Info (EERE)

Nord Distribution Solaire Nord Distribution Solaire Jump to: navigation, search Name Nord Distribution Solaire Place Roubaix, France Zip 59100 Sector Solar Product An installation company for solar passive and PV system in the North of France. Coordinates 50.691705°, 3.1752° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":50.691705,"lon":3.1752,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

460

Definition: Distribution Automation | Open Energy Information  

Open Energy Info (EERE)

Automation Automation Jump to: navigation, search Dictionary.png Distribution Automation DA is a family of technologies including sensors, processors, communication networks, and switches that can perform a number of distribution system functions depending on how they are implemented. Over the last 20 years, utilities have been applying DA to improve reliability, service quality and operational efficiency. More recently, DA is being applied to perform automatic switching, reactive power compensation coordination, or other feeder operations/control.[1] Related Terms sustainability, smart grid References ↑ https://www.smartgrid.gov/category/technology/distribution_automation [[Ca LikeLike UnlikeLike You and one other like this.One person likes this. Sign Up to see what your friends like.

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


461

Definition: Customer Energy Management Device and System | Open Energy  

Open Energy Info (EERE)

Device and System Device and System Jump to: navigation, search Dictionary.png Customer Energy Management Device and System A device that can control other energy devices such as thermostats, lighting, direct load control devices, or distributed energy resource within the customer premise. These devices may also receive information or control signals from utillities or third party energy service providers. These devices can help customers manage electricity usage automatically by utilizing information from service providers, or preferences set by the customer.[1] Related Terms energy, electricity generation, distributed energy resource References ↑ https://www.smartgrid.gov/category/technology/customer_energy_management_device_and_system [[Cat LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

462

An enhanced load transfer scheme for power distribution systems connected with distributed generation sources  

Science Conference Proceedings (OSTI)

This paper presents an enhanced load transfer scheme for power distribution systems connected with distributed generation sources. Load transfer is an important approach to improve the reliability of power distribution systems. The proposed load transfer ... Keywords: distributed generation source, distribution feeder, distribution system, interconnection, load transfer

Wen-Chih Yang; Wei-Tzer Huang

2011-04-01T23:59:59.000Z

463

From Waste to Hydrogen: An Optimal Design of Energy Production and Distribution Network  

E-Print Network (OSTI)

1 From Waste to Hydrogen: An Optimal Design of Energy Production and Distribution Network Nathan and distribution systems for hydrogen production from agricultural residues, which is a representative green energy of producing clean energy from renewable resources. This paper focuses on the optimal design of the production

Fan, Yueyue

464

Load Forecasting for Modern Distribution Systems  

Science Conference Proceedings (OSTI)

Load forecasting is a fundamental activity for numerous organizations and activities within a utility, including planning, operations, and control. Transmission and Distribution (T&D) planning and design engineers use the load forecast to determine whether any changes and additions are needed to the electric system to satisfy the anticipated load. Other load forecast users include system operations, financial ...

2013-03-08T23:59:59.000Z

465

Residential Power Systems for Distributed Generation Markets  

Science Conference Proceedings (OSTI)

This report is an update to "Technology Assessment of Residential Power Systems for Distributed Generation Markets" (EPRIsolutions report 1000772). That previous report dealt with fuel cells, stirling engine generators, and reciprocating engine generators; this current report focuses on polymer electrolyte membrane fuel cells (PEMFCs) and solid oxide fuel cell (SOFC) power systems fueled with natural gas or propane and sized for residential loads.

2002-03-29T23:59:59.000Z

466

NREL: Energy Analysis - Distributed Generation Energy Technology Operations  

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

Operations and Maintenance Costs Operations and Maintenance Costs Transparent Cost Database Button The following charts indicate recent operations and maintenance (O&M) cost estimates for distributed generation (DG) renewable energy technologies. The charts provide a compilation of available national-level cost data from a variety of sources. Costs in your specific location will vary. The red horizontal lines represent the first standard deviation of the mean. The U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) sponsored the distributed generation data used within these charts. If you are seeking utility-scale technology operations and maintenance estimates, please visit the Transparent Cost Database website for NREL's information regarding vehicles, biofuels, and electricity generation.

467

Modeling of Doubly Fed Induction Generators for Distribution System Power Flow Analysis.  

E-Print Network (OSTI)

??Large-scale integration of Wind Generators (WGs) with distribution systems is underway right across the globe in a drive to harness green energy. The Doubly Fed… (more)

Dadhania, Amitkumar

2010-01-01T23:59:59.000Z

468

Energy Efficiency/Demand Response/Smart Grid/Distribution ...  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration Independent Statistics & Analysis www.eia.gov Energy Efficiency/Demand Response/Smart Grid/Distribution ...

469

Energy Distribution of a Charged Regular Black Hole  

E-Print Network (OSTI)

We calculate the energy distribution of a charged regular black hole by using the energy-momentum complexes of Einstein and M{\\o}ller.

Irina Radinschi

2000-11-20T23:59:59.000Z

470

Multi-Building Microgrids for a Distributed Energy Future in Portugal  

E-Print Network (OSTI)

Gas-Fired Distributed Energy Resource Characterizations”,Energy Reliability, Distributed Energy Program of the U.S.Microgrids for a Distributed Energy Future in Portugal

Mendes, Goncalo

2013-01-01T23:59:59.000Z

471

Optimal Control of Distributed Energy Resources and Demand Response under Uncertainty  

E-Print Network (OSTI)

Optimal Control of Distributed Energy Resources and DemandRenewable Energy, former Distributed Energy Program of theOptimal Control of Distributed Energy Resources and Demand

Siddiqui, Afzal

2010-01-01T23:59:59.000Z

472

Distributed Energy Communications & Controls, Lab Activities - Synopsis  

Science Conference Proceedings (OSTI)

Electric power distribution systems are experiencing outages due to a phenomenon known as fault induced delayed voltage recovery (FIDVR) due to air conditioning (A/C) compressor motor stall. Local voltage collapse from FIDVR is occurring in part because modern air-conditioner and heat pump compressor motors are much more susceptible to stalling during a voltage sag or dip than older motors. These motors can stall in less than three cycles (0.05 s) when a fault, for example, on the sub-transmission system, causes voltage on the distribution system to sag to 70% or less of nominal. We completed a new test system for A/C compressor motor stall testing at the DECC Lab. The A/C Stall test system is being used to characterize when and how compressor motors stall under low voltage and high compressor pressure conditions. However, instead of using air conditioners, we are using high efficiency heat pumps. We have gathered A/C stall characterization data for both sustained and momentary voltage sags of the test heat pump. At low enough voltage, the heat pump stalls (compressor motor stops and draws 5-6 times normal current in trying to restart) due to low inertia and low torque of the motor. For the momentary sag, we are using a fast acting contactor/switch to quickly switch from nominal to the sagged voltage in cycles.

Rizy, D Tom [ORNL

2010-01-01T23:59:59.000Z

473

Feasibility Study: Ductless Hydronic Distribution Systems with Fan Coil Delivery  

SciTech Connect

The primary objectives of this study are to estimate potential energy savings relative to conventional ducted air distribution, and to identify equipment requirements, costs, and barriers with a focus on ductless hydronic delivery systems that utilize water-to-air terminal units in each zone. Results indicate that annual heating and cooling energy use can be reduced by up to 27% assuming replacement of the conventional 13 SEER heat pump and coil with a similarly rated air-to-water heat pump.

Springer, D.; Dakin, B.; Backman, C.

2012-07-01T23:59:59.000Z

474

Architecture Considerations for Integration of Distributed Energy Resources (DER)  

Science Conference Proceedings (OSTI)

This report summarizes the March 2010 Smart Grid demonstration meeting panel session on approaches for integrating distributed energy resources (DER).

2010-05-04T23:59:59.000Z

475

Understanding Fault Characteristics of Inverter-Based Distributed Energy Resources  

SciTech Connect

This report discusses issues and provides solutions for dealing with fault current contributions from inverter-based distributed energy resources.

Keller, J.; Kroposki, B.

2010-01-01T23:59:59.000Z

476

EPRI-DOE Handbook of Energy Storage for Transmission and Distribution Applications  

Science Conference Proceedings (OSTI)

The use of stored energy to support and optimize the electric transmission and distribution (T&D) system has been limited in the United States, but recent developments in advanced energy storage technologies and other technical, economic, and social factors suggest a promising future for energy storage. This Handbook provides an objective information resource on the leading, near-term energy storage systems and their costs and benefits for a wide range of T&D applications, including distributed generatio...

2003-12-17T23:59:59.000Z

477

Information distribution in a quantum system  

E-Print Network (OSTI)

If the information is encoded into the state of the subsystem $S$ of a quantum system initially (at $t=0$), then it becomes distributed over the whole quantum system at $t>0$ due to the quantum interactions. Consequently, this information, in general, can be extracted, either completely or partially, from any subsystem of a quantum system. A polarization measurement based method of information extraction from the receiver $R$ is represented.

Zenchuk, A I

2011-01-01T23:59:59.000Z

478

Modeling the Panchromatic Spectral Energy Distributions of Galaxies  

E-Print Network (OSTI)

The spectral energy distributions (SEDs) of galaxies are shaped by nearly every physical property of the system, including the star formation history, metal content, abundance pattern, dust mass, grain size distribution, star-dust geometry, and interstellar radiation field. The principal goal of stellar population synthesis (SPS) is to extract these variables from observed SEDs. In this review I provide an overview of the SPS technique and discuss what can be reliably measured from galaxy SEDs. Topics include stellar masses, star formation rates and histories, metallicities and abundance patterns, dust properties, and the stellar initial mass function.

Conroy, Charlie

2013-01-01T23:59:59.000Z

479

Performance of thermal distribution systems in large commercial buildings  

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

Performance of thermal distribution systems in large commercial buildings Performance of thermal distribution systems in large commercial buildings Title Performance of thermal distribution systems in large commercial buildings Publication Type Journal Article LBNL Report Number LBNL-44331 Year of Publication 2002 Authors Xu, Tengfang T., François Rémi Carrié, Darryl J. Dickerhoff, William J. Fisk, Jennifer A. McWilliams, Duo Wang, and Mark P. Modera Journal Energy and Buildings Volume 34 Start Page Chapter Pagination 215-226 Abstract This paper presents major findings of a field study on the performance of five thermal distribution systems in four large commercial buildings. The five systems studied are typical single-duct or dual-duct constant air volume (CAV) systems and variable air volume (VAV) systems, each of which serves an office building or a retail building with floor area over 2,000 m2. The air leakage from ducts are reported in terms of effective leakage area (ELA) at 25 Pa reference pressure, the ASHRAE-defined duct leakage class, and air leakage ratios. The specific ELAs ranged from 0.7 to 12.9 cm2 per m2 of duct surface area, and from 0.1 to 7.7 cm2 per square meter of floor area served. The leakage classes ranged from 34 to 757 for the five systems and systems sections tested. The air leakage ratios are estimated to be up to one-third of the fan- supplied airflow in the constant-air-volume systems. The specific ELAs and leakage classes indicate that air leakage in large commercial duct systems varies significantly from system to system, and from system section to system section even within the same thermal distribution system. The duct systems measured are much leakier than the ductwork specified as "unsealed ducts" by ASHRAE. Energy losses from supply ducts by conduction (including convection and radiation) are found to be significant, on the scale similar to the losses induced by air leakage in the duct systems. The energy losses induced by leakage and conduction suggest that there are significant energy-savings potentials from duct-sealing and insulation practice in large commercial buildings

480

Sustainable Electrical Energy Systems  

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

Sustainable Electrical Energy Systems Speaker(s): Mark O'Malley Date: June 27, 2012 - 12:00pm Location: 90-1099 Seminar HostPoint of Contact: Sila Kiliccote The process of making...

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


481

Open Energy Information Systems  

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

OpenEIS (energy information OpenEIS (energy information systems) Jessica Granderson Lawrence Berkeley National Laboratory JGranderson@lbl.gov, 510.486.6792 April 3, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Advanced algorithms and analyses can enable 5-40% savings, yet are rarely adopted; 3 relevant barriers include: 1. Lack of awareness that simple analytics can be used to generate valuable insights and actionable information, without further training

482

Open Energy Information Systems  

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

OpenEIS (energy information OpenEIS (energy information systems) Jessica Granderson Lawrence Berkeley National Laboratory JGranderson@lbl.gov, 510.486.6792 April 3, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Advanced algorithms and analyses can enable 5-40% savings, yet are rarely adopted; 3 relevant barriers include: 1. Lack of awareness that simple analytics can be used to generate valuable insights and actionable information, without further training

483

The Impact of Angular Energy Distribution on Spatial Correlation  

E-Print Network (OSTI)

The Impact of Angular Energy Distribution on Spatial Correlation R. Michael Buehrer Mobile approximation for spatial correlation for three very different angular energy distributions: a Gaussian angle for spatial correlation when the angular energy distribution is bi-modal. These generalized equations

Buehrer, R. Michael

484

Supporting Energy-driven Adaptations in Distributed Environments  

E-Print Network (OSTI)

Supporting Energy-driven Adaptations in Distributed Environments Adel Noureddine, Romain Rouvoy of energy techniques and in different contexts. The distributed nature of our approach fits in a ubiquitous Middleware, Energy awareness, Distributed Environments 1. INTRODUCTION With the increase in the usage

Paris-Sud XI, Université de