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Note: This page contains sample records for the topic "reliable off-grid power" from the National Library of EnergyBeta (NLEBeta).
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1

A Control Strategy for Off-Grid Solar Photovoltaic Power System Based on MPPT Algorithm  

Science Conference Proceedings (OSTI)

Off-grid solar photovoltaic (PV) power system characteristics are used widely in many far-away areas during theses years. The new control strategy employs Maximum Power Point Tracking (MPPT) algorithm. The maximum power point tracker is a high efficiency ... Keywords: off-grid solar photovoltaic power system, maximum power point tracking algorithm, perturbation and observation control method

Tianjian Wang; Xia Dang; Dong Liu

2012-10-01T23:59:59.000Z

2

Energy System Development inAfrica: The case of grid and off-grid power inKenya  

E-Print Network (OSTI)

Africa: The case of grid and off-grid power inKenya Acknowledgements I have been lucky to spend the past five yearsEnergy System Development inAfrica: The case of grid and off-grid power inKenya By Katherine Deaton Development inAfrica: The case of grid and off-grid power inKenya Energy System Development inAfrica: The case

de Weck, Olivier L.

3

Off-grid Power for Small Communities with Renewable Energy Sources in Rural Guatemalan Villages  

Science Conference Proceedings (OSTI)

Abstract--This paper describes the process used to plan, design, and implement an off-grid electrical system for a village with less than 50 homes in rural Guatemala. The community has a small school, community center, community kitchen, and 43 homes/families. ... Keywords: photovoltaic, hydroelectric, Guatemala, battery, EWB, Engineers Without Borders, solar energy, microhydro, off-grid.

Eugene D. Moe; Andrea P. Moe

2011-10-01T23:59:59.000Z

4

Energy system development in Africa : the case of grid and off-grid power in Kenya  

E-Print Network (OSTI)

This research used a combination of a grounded theory approach and system dynamics to study the electric power system in Kenya and to model the feedback at work in the development of the system. The ethnographic study ...

Steel, Katherine Deaton

2008-01-01T23:59:59.000Z

5

Optimization of Electric Power Systems for Off-Grid Domestic Applications: An Argument for Wind/Photovoltaic Hybrids  

SciTech Connect

The purpose of this research was to determine the optimal configuration of home power systems relevant to different regions in the United States. The hypothesis was that, regardless of region, the optimal system would be a hybrid incorporating wind technology, versus a photovoltaic hybrid system without the use of wind technology. The method used in this research was HOMER, the Hybrid Optimization Model for Electric Renewables. HOMER is a computer program that optimizes electrical configurations under user-defined circumstances. According to HOMER, the optimal system for the four regions studied (Kansas, Massachusetts, Oregon, and Arizona) was a hybrid incorporating wind technology. The cost differences between these regions, however, were dependent upon regional renewable resources. Future studies will be necessary, as it is difficult to estimate meteorological impacts for other regions.

Jennings, W.; Green, J.

2001-01-01T23:59:59.000Z

6

Performance Analysis of Off-Grid Micro WECS in Harsh  

E-Print Network (OSTI)

wind power at off-grid sites · Motivated by high cost and environmental risk of traditional diesel Labrador · Originally powered solely by diesel generators with battery bank · Solar power introduced at sites in early 1990's · Wind power installation began in 2003 #12;4/19 Background · Now implementing

Bruneau, Steve

7

RIGHT SIZING AN OFF-GRID SOLAR HOUSE Eleventh International IBPSA Conference Glasgow, Scotland  

E-Print Network (OSTI)

Power reliability is one of the biggest concerns for people living off-grid. Current practice in off-grid solar house tends to either oversize solar power system or oversize the backup generator to ensure available electricity at all times, which often leads to a high system capital cost. Research has shown that right-sizing is essential to achieve a more efficient system with reduced energy consumption. Sound, responsible system sizing can only happen when liability issues become part of the design methodology, i.e. actively communicating with prospective owners/occupants regarding the risk that the thermal comfort, and full time use of appliances cannot be fully guaranteed. The risk of nonfulfilments may be related to extraordinary environmental conditions for a certain amount of time of the year, the chance that certain components will fail for some reason, and the fact that predictions of the operation of houses are based on design idealizations, whereas its real operation is to some degree uncertain. This paper presents a value-based approach to find the balancing point between the acceptable reliability level and the affordable system capital cost. The value-based approach is illustrated through a sizing practice of an existing off-grid solar house in Atlanta, GA.

Huafen Hu; Godfried Augenbroe

2009-01-01T23:59:59.000Z

8

Off-Grid or Stand-Alone Renewable Energy Systems | Department of Energy  

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

Off-Grid or Stand-Alone Renewable Energy Systems Off-Grid or Stand-Alone Renewable Energy Systems Off-Grid or Stand-Alone Renewable Energy Systems July 2, 2012 - 8:20pm Addthis Off-grid, or stand-alone, systems can be more cost-effective than connecting to the grid in remote locations. | Photo courtesy of Dave Parsons. Off-grid, or stand-alone, systems can be more cost-effective than connecting to the grid in remote locations. | Photo courtesy of Dave Parsons. What are the key facts? In remote locations, stand-alone systems can be more cost-effective than extending a power line to the electricity grid. Stand-alone systems are also used by people who live near the grid but are looking for independence from the power provider or to demonstrate a commitment to non-polluting energy sources. Batteries, and other additional equipment, are required with

9

Measured Off-Grid LED Lighting System Performance  

E-Print Network (OSTI)

Market in Western Kenya: LED Alternatives and Consumerfor Emerging Off-grid White-LED Illumination Systems forReport #4 Measured Off-Grid LED Lighting System Performance

Granderson, Jessica

2009-01-01T23:59:59.000Z

10

Introduction to off grid energy options for RE systems | Open Energy  

Open Energy Info (EERE)

Introduction to off grid energy options for RE systems Introduction to off grid energy options for RE systems Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Introduction to off grid energy options for RE systems Agency/Company /Organization: Alternative Energy Sector: Energy Focus Area: Renewable Energy Phase: Evaluate Options Topics: Co-benefits assessment, - Energy Access Resource Type: Guide/manual User Interface: Website Website: www.altenergy.org/Glossary/intro.html Cost: Free Language: English This guide is designed to help those who require modern energy-consuming equipment in off-grid areas and who must select appropriate power equipment. Rural development is greatly enhanced by the availability of decent lighting, pumping, refrigeration and audio-visual/communication tools. There is a wide variety of equipment available to meet these needs.

11

Power electronics reliability analysis.  

SciTech Connect

This report provides the DOE and industry with a general process for analyzing power electronics reliability. The analysis can help with understanding the main causes of failures, downtime, and cost and how to reduce them. One approach is to collect field maintenance data and use it directly to calculate reliability metrics related to each cause. Another approach is to model the functional structure of the equipment using a fault tree to derive system reliability from component reliability. Analysis of a fictitious device demonstrates the latter process. Optimization can use the resulting baseline model to decide how to improve reliability and/or lower costs. It is recommended that both electric utilities and equipment manufacturers make provisions to collect and share data in order to lay the groundwork for improving reliability into the future. Reliability analysis helps guide reliability improvements in hardware and software technology including condition monitoring and prognostics and health management.

Smith, Mark A.; Atcitty, Stanley

2009-12-01T23:59:59.000Z

12

Embodied Energy and Off-Grid Lighting  

Science Conference Proceedings (OSTI)

The greenhouse gas (GHG) emissions from fuel-based lighting are substantial given the paltry levels of lighting service provided to users, leading to a great opportunity for GHG mitigation byencouraging the switch from fuel-based to rechargeable LED lighting. However, as with most new energy technology, switching to efficient lighting requires an up-front investment of energy(and GHGs) embedded in the manufacture of replacement components. We studied a population of off-grid lighting users in 2008-2009 in Kenya who were given the opportunity to adopt LEDlighting. Based on their use patterns with the LED lights and the levels of kerosene offset we observed, we found that the embodied energy of the LED lamp was"paid for" in only one month for grid charged products and two months for solar charged products. Furthermore, the energyreturn-on investment-ratio (energy produced or offset over the product's service life divided by energy embedded) for off-grid LED lighting ranges from 12 to 24, which is on par with on-gridsolar and large-scale wind energy. We also found that the energy embodied in the manufacture of a typical hurricane lantern is about one-half to one-sixth of that embodied in the particular LEDlights that we evaluated, indicating that the energy payback time would be moderately faster if LEDs ultimately displace the production of kerosene lanterns. As LED products improve, weanticipate longer service lives and more successful displacement of kerosene lighting, both of which will speed the already rapid recovery of embodied energy in these products. Our studyprovides a detailed appendix with embodied energy values for a variety of components used to construct off-grid LED lighting, which can be used to analyze other products.

Alstone, Peter; Mills, Evan; Jacobson, Arne

2011-01-25T23:59:59.000Z

13

Power electronics reliability.  

Science Conference Proceedings (OSTI)

The project's goals are: (1) use experiments and modeling to investigate and characterize stress-related failure modes of post-silicon power electronic (PE) devices such as silicon carbide (SiC) and gallium nitride (GaN) switches; and (2) seek opportunities for condition monitoring (CM) and prognostics and health management (PHM) to further enhance the reliability of power electronics devices and equipment. CM - detect anomalies and diagnose problems that require maintenance. PHM - track damage growth, predict time to failure, and manage subsequent maintenance and operations in such a way to optimize overall system utility against cost. The benefits of CM/PHM are: (1) operate power conversion systems in ways that will preclude predicted failures; (2) reduce unscheduled downtime and thereby reduce costs; and (3) pioneering reliability in SiC and GaN.

Kaplar, Robert James; Brock, Reinhard C.; Marinella, Matthew; King, Michael Patrick; Stanley, James K.; Smith, Mark A.; Atcitty, Stanley

2010-10-01T23:59:59.000Z

14

Measured Off-Grid LED Lighting System Performance  

E-Print Network (OSTI)

The Specter of Fuel-Based Lighting," Science 308:1263-1264.Mills. 2008. "Solid-State Lighting on a Shoestring Budget:The Economics of Off-Grid Lighting for Small Businesses in

Granderson, Jessica

2009-01-01T23:59:59.000Z

15

Technical and Economic Assessment of Off-grid, Mini-grid and...  

Open Energy Info (EERE)

Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies Jump to: navigation, search Name Technical and Economic Assessment of Off-grid,...

16

Off-grid Energy in Rural India: Policy Recommendations for  

E-Print Network (OSTI)

either benefit from energy access or supply their communities with energy services. #12;Lacayo 3 Timeline and domestic use, and small scale industry, as shown in table 1. Most of the energy needs in rural areasLacayo 1 Off-grid Energy in Rural India: Policy Recommendations for Effective UN Projects Antonio I

Mauzerall, Denise

17

Market Trial: Selling Off-Grid Lighting Products in Rural Kenya  

Science Conference Proceedings (OSTI)

In this study, we performed a market trial of off-grid LED lighting products in Maai Mahiu, arural Kenyan town. Our goals were to assess consumer demand and consumer preferences with respect to off-grid lighting systems and to gain feedback from off-grid lighting users at the point of purchase and after they have used to products for some time.

Tracy, Jennifer; Alstone, Peter; Jacobson, Arne; Mills, Evan

2010-06-21T23:59:59.000Z

18

Recommendations to Address Power Reliability Concerns Raised...  

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

Reliability Concerns Raised as a Result of Pending Environmental Regulations for Electric Generation Stations Recommendations to Address Power Reliability Concerns Raised as a...

19

Product Quality Assurance for Off-Grid Lighting in Africa  

SciTech Connect

Although the emergence of markets for high efficiency off-grid lighting technologies holds promise, realizing the potential of this opportunity on a long-term, sustainable basis requires careful attention to issues of product quality, consumer protection, and the potential for significant 'market spoiling', in anticipation of increases of sales of low cost, low performance off-grid lighting products. The goal of the Lighting Africa quality assurance workshop was to articulate strategies to mitigate the dangers of market spoiling and to explore ways to protect consumers from misleading advertising for sales of inferior, off-grid lighting products in the context of Lighting Africa's overarching objective to support the industry in developing a robust off-grid lighting market in Africa. The workshop resulted in the identification of two strategic approaches for meeting Lighting Africa quality assurance programmatic needs. The first strategy is intended to meet a short-term programmatic need for quality associated with requests for lighting products by bulk procurement agents, such as in a World Bank-financed project. The development of procurement specifications and test procedures that could be used in a quality/usability screening method in order to provide guidance for forthcoming large volume purchases emerged as the best solution to meet this need. Such approaches are used in World Bank-financed solar home systems (SHSs) projects in Bangladesh, Sri Lanka, and China, among others. However, unlike the SHSs which have multiple balance-of-system (BOS) components warranting the need for an array of specifications for individual components, stand alone lighting systems require specifications that are amenable to individual light points. To test this approach, Lighting Africa elected to use the technical specifications issued by the Photovoltaic Global Approval Program for solar lanterns that use CFL bulbs (PVRS11A) as the basis of qualifying such products. A contract has been competitively awarded to the Global Approval Program for Photovoltaics (PV GAP) under the Lighting Africa Program to select and test ten solar lantern product models. Lantern selection will be determined based on a number of criteria, among them, the ability to provide a daily duty cycle of at least 3 hours of light, the number of days of autonomy of battery, the volume of sales (especially in Africa), and whether or not the manufacturing facility is ISO 9000 certified. Those that are confirmed as meeting the specifications may be eligible to receive a PVGAP quality seal. The work is being carried out in partnership with the Photovoltaic and Wind Quality Test Center in Beijing, China and TUV Rhineland in Koeln, Germany. As off-grid LED-based stand-alone lighting products is in a nascent stage of development compared to CFL-based lanterns, Lighting Africa will support the development of a 'Quality Screening' approach to selecting LED lighting, in order not to delay consumers benefiting from such advances. The screening methodology could be used by procurement agencies to qualify LED lighting products for bulk or programmatic procurements. The main elements of this work comprises of developing a procurement specification and test procedure for undertaking a 'quick' quality/usability screening to be used for procuring LED lights and to test up to 30 LED-based lights to screen products that meet the requirement. The second strategy is intended to meet a longer-term need associated with creating a self-sustaining product quality assurance program that will effectively protect the African consumer, prevent significant market spoiling, adapt with expected technological advancements over the long-term--in other words, give consumers the ability to detect quality products and the information needed to find products that meet their specific needs from among the myriad of lighting products that become available commercially. Workshop discussions and the discussions evolving from the workshop led the Lighting Africa team to opt for an approach similar to that of th

World Bank; Mills, Evan; Mills, Evan

2008-07-13T23:59:59.000Z

20

OFF-GRID RENEWABLE ENERGY OPTIONS FOR RURAL ELECTRIFICATION IN WESTERN CHINA  

E-Print Network (OSTI)

OFF-GRID RENEWABLE ENERGY OPTIONS FOR RURAL ELECTRIFICATION IN WESTERN CHINA by the Center for Energy and Environmental Policy of University of Delaware Sponsored by National Renewable Energy Laboratory and Ministry of Agriculture People's Republic of China June 2001 #12;i OFF-GRID RENEWABLE ENERGY

Delaware, University of

Note: This page contains sample records for the topic "reliable off-grid power" 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

Event:First International Off-Grid Renewable Energy Conference | Open  

Open Energy Info (EERE)

Off-Grid Renewable Energy Conference Off-Grid Renewable Energy Conference Jump to: navigation, search Calendar.png First International Off-Grid Renewable Energy Conference: on 2012/11/01 "The Alliance for Rural Electrification (ARE), the ECOWAS Regional Centre for Renewable Energy and Energy Efficiency (ECREEE) and the International Renewable Energy Agency (IRENA) are jointly organising the 1st International Off-grid Renewable Energy Conference, an official contribution to the UN Sustainable Energy for All Initiative. This Conference will be the first major international event focusing on off-grid renewables in developing countries with a special focus on Africa. With the objective of increasing the collaboration between public authorities and the private sector, the Conference's participants will collectively

22

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

Report #3 Solid-State Lighting on a Shoestring Budget:The Economics of Off-Grid Lighting for Small Businesses inProject includes an Off-Grid Lighting Technology Assessment

Radecsky, Kristen

2009-01-01T23:59:59.000Z

23

Reliability Estimates for Power Supplies  

Science Conference Proceedings (OSTI)

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

Lee C. Cadwallader; Peter I. Petersen

2005-09-01T23:59:59.000Z

24

Small Wind Guidebook/Can I Go Off-Grid | Open Energy Information  

Open Energy Info (EERE)

Can I Go Off-Grid Can I Go Off-Grid < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook Home WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical for Me? * What Size Wind Turbine Do I Need? * What Are the Basic Parts of a Small Wind Electric System? * What Do Wind Systems Cost? * Where Can I Find Installation and Maintenance Support? * How Much Energy Will My System Generate? * Is There Enough Wind on My Site? * How Do I Choose the Best Site for My Wind Turbine? * Can I Connect My System to the Utility Grid? * Can I Go Off-Grid? * State Information Portal * Glossary of Terms * For More Information Can I Go "Off-Grid"?

25

Technical and Economic Assessment of Off-grid, Mini-grid and Grid  

Open Energy Info (EERE)

Technical and Economic Assessment of Off-grid, Mini-grid and Grid Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies Jump to: navigation, search Tool Summary Name: Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies Agency/Company /Organization: World Bank Sector: Energy Focus Area: Energy Efficiency Topics: Resource assessment, Technology characterizations Website: siteresources.worldbank.org/EXTENERGY/Resources/336805-1157034157861/E References: Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies[1] Summary "This report is part of the Energy and Water Department's commitment to providing new techniques and knowledge which complement the direct investment and other assistance to electrification as provided by the

26

Demand Response For Power System Reliability: FAQ  

SciTech Connect

Demand response is the most underutilized power system reliability resource in North America. Technological advances now make it possible to tap this resource to both reduce costs and improve. Misconceptions concerning response capabilities tend to force loads to provide responses that they are less able to provide and often prohibit them from providing the most valuable reliability services. Fortunately this is beginning to change with some ISOs making more extensive use of load response. This report is structured as a series of short questions and answers that address load response capabilities and power system reliability needs. Its objective is to further the use of responsive load as a bulk power system reliability resource in providing the fastest and most valuable ancillary services.

Kirby, Brendan J [ORNL

2006-12-01T23:59:59.000Z

27

Measurement Practices for Reliability and Power Quality  

DOE Green Energy (OSTI)

This report provides a distribution reliability measurement ''toolkit'' that is intended to be an asset to regulators, utilities and power users. The metrics and standards discussed range from simple reliability, to power quality, to the new blend of reliability and power quality analysis that is now developing. This report was sponsored by the Office of Electric Transmission and Distribution, U.S. Department of Energy (DOE). Inconsistencies presently exist in commonly agreed-upon practices for measuring the reliability of the distribution systems. However, efforts are being made by a number of organizations to develop solutions. In addition, there is growing interest in methods or standards for measuring power quality, and in defining power quality levels that are acceptable to various industries or user groups. The problems and solutions vary widely among geographic areas and among large investor-owned utilities, rural cooperatives, and municipal utilities; but there is still a great degree of commonality. Industry organizations such as the National Rural Electric Cooperative Association (NRECA), the Electric Power Research Institute (EPRI), the American Public Power Association (APPA), and the Institute of Electrical and Electronics Engineers (IEEE) have made tremendous strides in preparing self-assessment templates, optimization guides, diagnostic techniques, and better definitions of reliability and power quality measures. In addition, public utility commissions have developed codes and methods for assessing performance that consider local needs. There is considerable overlap among these various organizations, and we see real opportunity and value in sharing these methods, guides, and standards in this report. This report provides a ''toolkit'' containing synopses of noteworthy reliability measurement practices. The toolkit has been developed to address the interests of three groups: electric power users, utilities, and regulators. The report will also serve to support activities to develop and share information among industry and regulatory participants about critical resources and practices. The toolkit has been developed by investigating the status of indices and definitions, surveying utility organizations on information sharing, and preparing summaries of reliability standards and monitoring requirements--the issues, needs, work under way, existing standards, practices and guidelines--for the following three classifications: (1) terms and definitions of reliability; (2) power quality standards, guidelines, and measurements; and (3) activities and organizations developing and sharing information on distribution reliability. As these synopses of reliability measurement practices are provided, it must be noted that an economic penalty may be associated with requiring too high a reliability level from the distribution system for all customers. It may be appropriate for the distribution system to supply only some base, generally accepted level of reliability. This base level would be adequate for the majority of customers. Users who need a higher level may find it economical to supply using distributed energy resources (DER) and other local solutions to reliability and power quality needs. Local solutions implemented by the customer may be the most cost-effective method for addressing the more stringent needs of a digital economy. These local solutions include energy storage, small distributed generators, and microgrids. This report also considers the market's role in addressing reliability issues and requirements. The customer's needs are discussed in view of issues such as power quality requirements of digital electronic equipment, the cost of outages, the cost of storage and new infrastructure, and natural gas prices. The market role in addressing these issues and requirements is explored. The economic considerations associated with the reliability issues are discussed, as well as the levels at which these economic decisions could be made. Finally, a discussion is provided of the role DER could play in addressing

Kueck, JD

2005-05-06T23:59:59.000Z

28

Measurement Practices for Reliability and Power Quality  

SciTech Connect

This report provides a distribution reliability measurement ''toolkit'' that is intended to be an asset to regulators, utilities and power users. The metrics and standards discussed range from simple reliability, to power quality, to the new blend of reliability and power quality analysis that is now developing. This report was sponsored by the Office of Electric Transmission and Distribution, U.S. Department of Energy (DOE). Inconsistencies presently exist in commonly agreed-upon practices for measuring the reliability of the distribution systems. However, efforts are being made by a number of organizations to develop solutions. In addition, there is growing interest in methods or standards for measuring power quality, and in defining power quality levels that are acceptable to various industries or user groups. The problems and solutions vary widely among geographic areas and among large investor-owned utilities, rural cooperatives, and municipal utilities; but there is still a great degree of commonality. Industry organizations such as the National Rural Electric Cooperative Association (NRECA), the Electric Power Research Institute (EPRI), the American Public Power Association (APPA), and the Institute of Electrical and Electronics Engineers (IEEE) have made tremendous strides in preparing self-assessment templates, optimization guides, diagnostic techniques, and better definitions of reliability and power quality measures. In addition, public utility commissions have developed codes and methods for assessing performance that consider local needs. There is considerable overlap among these various organizations, and we see real opportunity and value in sharing these methods, guides, and standards in this report. This report provides a ''toolkit'' containing synopses of noteworthy reliability measurement practices. The toolkit has been developed to address the interests of three groups: electric power users, utilities, and regulators. The report will also serve to support activities to develop and share information among industry and regulatory participants about critical resources and practices. The toolkit has been developed by investigating the status of indices and definitions, surveying utility organizations on information sharing, and preparing summaries of reliability standards and monitoring requirements--the issues, needs, work under way, existing standards, practices and guidelines--for the following three classifications: (1) terms and definitions of reliability; (2) power quality standards, guidelines, and measurements; and (3) activities and organizations developing and sharing information on distribution reliability. As these synopses of reliability measurement practices are provided, it must be noted that an economic penalty may be associated with requiring too high a reliability level from the distribution system for all customers. It may be appropriate for the distribution system to supply only some base, generally accepted level of reliability. This base level would be adequate for the majority of customers. Users who need a higher level may find it economical to supply using distributed energy resources (DER) and other local solutions to reliability and power quality needs. Local solutions implemented by the customer may be the most cost-effective method for addressing the more stringent needs of a digital economy. These local solutions include energy storage, small distributed generators, and microgrids. This report also considers the market's role in addressing reliability issues and requirements. The customer's needs are discussed in view of issues such as power quality requirements of digital electronic equipment, the cost of outages, the cost of storage and new infrastructure, and natural gas prices. The market role in addressing these issues and requirements is explored. The economic considerations associated with the reliability issues are discussed, as well as the levels at which these economic decisions could be made. Finally, a discussion is

Kueck, JD

2005-05-06T23:59:59.000Z

29

Electric Power Reliability in Chemical Plants  

E-Print Network (OSTI)

The quality and reliability of utility-generated electric power is presently receiving a great deal of attention from the chemical and refining industry. What changes have taken place to make electric power reliability a major topic of discussion at plants across the country? Has the quality and reliability of utility-generated power deteriorated over the past five or ten years? Or, has the perception of what constitutes reliable power changed with the advent, installation, and increasing usage of microprocessor-based equipment and controllers? The differing views held by both parties tend to make their relationship adversarial. Both parties have problems with their individuals views and the associated monetary costs, which can be either a loss or a gain. Improved reliability for the chemical plant means less "off spec" product, thereby resulting in more product to sell. Improved reliability for the utility means less customer downtime, thereby resulting in more KWH sales and a higher capacity factor. The biggest limiting factor to solving the actual problems is the dollar cost associated with that solution. Each solution must have a payback period that meets the economic criteria for return on investment for either the industry or the utility.

Cross, M. B.

1989-09-01T23:59:59.000Z

30

An Analysis of Off-Grid, Off-Pipe Housing in Six U.S. Climates  

E-Print Network (OSTI)

This dissertation addresses the issues of climate change and depletion of non-renewable resources of energy and water, and aims at eliminating the use of non-renewable resources of energy and water for the building operation in single-family detached residences in the U.S. With this aim, this study investigated the feasibility of the off-grid, off-pipe design approach in six climate locations across the U.S. to achieve self-sufficiency in a house for building energy, indoor water use, and household wastewater and sewage disposal using only on-site available renewable resources. For the analysis, a 2,500 ft2, 2000/2001 International Energy Conservation Code standard reference house with typical building and usage characteristics was selected as the base case. The six U.S. climate locations included: Minneapolis, MN, Boulder, CO, Atlanta, GA, Houston, TX, Phoenix, AZ, and Los Angeles, CA. The renewable resources considered for this study included: solar radiation, wind, biomass for building energy needs; rainwater for indoor water use. In addition, the building site was considered for the disposal of household wastewater and sewage. The selected climate locations provided different scenarios in terms of base-case building energy needs and availability of renewable resources. Depending on these, energy and water efficiency measures were selected for reducing the building needs. For the reduced building needs, the sizing of systems for self-sufficiency was performed, including: solar thermal system for buildings space heating and water heating needs, photovoltaic and wind power systems for buildings electricity needs; rainwater harvesting system for indoor water needs; and septic system for the on-site disposal of household wastewater and sewage. In this manner, an integrated analysis procedure was developed for the analysis and design of off-grid, off-pipe homes, and was demonstrated for six U.S. climate locations. The results of the analysis indicated that achieving self-sufficiency for energy, water and sewage disposal was possible in all climates provided the systems for the collection and storage of renewable resources were large. On the other hand, the utilization of these systems was small for locations, where the year-to-year and seasonal variations in the weather conditions and availability of climate resources was large. For increased system utilization, minimization of the peak building needs, utilization of harvested energy for secondary purposes, and considering alternative systems for such applications are preferred.

Malhotra, Mini

2009-12-01T23:59:59.000Z

31

An Analysis of Off-grid, Off-pipe Housing in Six U.S. Climates  

E-Print Network (OSTI)

This dissertation addresses the issues of climate change and depletion of non-renewable resources of energy and water, and aims at eliminating the use of non-renewable resources of energy and water for the building operation in single-family detached residences in the U.S. With this aim, this study investigated the feasibility of the off-grid, off-pipe design approach in six climate locations across the U.S. to achieve self-sufficiency in a house for building energy, indoor water use, and household wastewater and sewage disposal using only on-site available renewable resources. For the analysis, a 2,500 ft2, 2000/2001 International Energy Conservation Code standard reference house with typical building and usage characteristics was selected as the base case. The six U.S. climate locations included: Minneapolis, MN, Boulder, CO, Atlanta, GA, Houston, TX, Phoenix, AZ, and Los Angeles, CA. The renewable resources considered for this study included: solar radiation, wind, biomass for building energy needs; rainwater for indoor water use. In addition, the building site was considered for the disposal of household wastewater and sewage. The selected climate locations provided different scenarios in terms of base-case building energy needs and availability of renewable resources. Depending on these, energy and water efficiency measures were selected for reducing the building needs. For the reduced building needs, the sizing of systems for self-sufficiency was performed, including: solar thermal system for buildings space heating and water heating needs, photovoltaic and wind power systems for buildings electricity needs; rainwater harvesting system for indoor water needs; and septic system for the on-site disposal of household wastewater and sewage. In this manner, an integrated analysis procedure was developed for the analysis and design of off-grid, off-pipe homes, and was demonstrated for six U.S. climate locations. The results of the analysis indicated that achieving self-sufficiency for energy, water and sewage disposal was possible is all climates provided the systems for the collection and storage of renewable resources were large. On the other hand, the utilization of these systems was small for locations, where the year-to-year and seasonal variations in the weather conditions and availability of climate resources was large. For increased system utilization, minimization of the peak building needs, utilization of harvested energy for secondary purposes, and considering alternative systems for such applications are preferred.

Malhotra, Mini

2009-12-01T23:59:59.000Z

32

Efficient and Reliable Reactive Power Supply and Consumption...  

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

Efficient and Reliable Reactive Power Supply and Consumption - Insights from an Integrated Program of Engineering and Economics Research Title Efficient and Reliable Reactive Power...

33

Granite Reliable Power | Open Energy Information  

Open Energy Info (EERE)

Reliable Power Reliable Power Jump to: navigation, search Name Granite Reliable Power Facility Granite Reliable Power Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Brookfield Renewable Energy Group Developer Brookfield Renewable Energy Group Energy Purchaser Green Mountain Power / Central Vermont Public Service / New England Power Pool Location Milan NH Coordinates 44.74039314°, -71.28376007° 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":44.74039314,"lon":-71.28376007,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

34

Nuclear Power - Control, Reliability and Human Factors  

E-Print Network (OSTI)

Advances in reactor designs, materials and human-machine interfaces guarantee safety and reliability of emerging reactor technologies, eliminating possibilities for high-consequence human errors as those which have occurred in the past. New instrumentation and control technologies based in digital systems, novel sensors and measurement approaches facilitate safety, reliability and economic competitiveness of nuclear power options. Autonomous operation scenarios are becoming increasingly popular to consider for small modular systems. This book belongs to a series of books on nuclear power published by InTech. It consists of four major sections and contains twenty-one chapters on topics from key subject areas pertinent to instrumentation and control, operation reliability, system aging and human-machine interfaces. The book targets a broad potential readership group - students, researchers and specialists in the field - who are interested in learning about nuclear power.

Tsvetkov, Pavel

2011-09-01T23:59:59.000Z

35

Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market  

E-Print Network (OSTI)

of emerging off-grid White-LED illumination systems, Light &Assessing the Performance of LED-Based Flashlights Availableflashlights that use LED technology are increasingly

Tracy, Jennifer

2010-01-01T23:59:59.000Z

36

Ocean Wave Energy-Driven Desalination Systems for Off-grid Coastal Communities in Developing Countries  

Science Conference Proceedings (OSTI)

Resolute Marine Energy, Inc. (RME) is based in Boston, MA and is developing ocean wave energy converters (WECs) to benefit remote off-grid communities in developing nations. Our two WEC technologies are based on the heaving and surging motion of a buoy ... Keywords: ocean wave energy, renewable energy, desalination, water, coastal communities

Eshwan Ramudu

2011-10-01T23:59:59.000Z

37

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES  

E-Print Network (OSTI)

-storage materials, flywheels, pumped hydro (PH), superconducting magnetic energy storage (SMES) and compressed airCOMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES Dominique, USA ABSTRACT In this work, a low-cost, low-volume, low-maintenance, small-scale compressed-air energy

Deymier, Pierre

38

Reliable Power Inc | Open Energy Information  

Open Energy Info (EERE)

Power Inc Power Inc Jump to: navigation, search Name Reliable Power Inc Place Arlington, Virginia Zip VA 22201 Product US-based fuel cell manufacturer. Coordinates 43.337585°, -89.379449° 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":43.337585,"lon":-89.379449,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

39

Off-grid Direction of Arrival Estimation Using Sparse Bayesian Inference  

E-Print Network (OSTI)

This paper is focused on solving the narrowband direction of arrival estimation problem from a sparse signal reconstruction perspective. Existing sparsity-based methods have shown advantages over conventional ones but exhibit limitations in practical situations where the true directions are not in the sampling grid. A so-called off-grid model is broached to reduce the modeling error caused by the off-grid directions. An iterative algorithm is proposed in this paper to solve the resulting problem from a Bayesian perspective while joint sparsity among different snapshots is exploited by assuming the same Laplace prior. Like existing sparsity-based methods, the new approach applies to arbitrary sensor array and exhibits increased resolution and improved robustness to noise and source correlation. Moreover, our approach results in more accurate direction of arrival estimation, e.g., smaller bias and lower mean squared error. High precision can be obtained with a coarse sampling grid and, meanwhile, computational ...

Yang, Zai; Zhang, Cishen

2011-01-01T23:59:59.000Z

40

Microsoft PowerPoint - NERC Reliability Standards and Mandatory...  

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

NERC Reliability Standards and Standards and Mandatory Compliance Mandatory Compliance Hydro Hydro - - Power Conference Power Conference June 13, 2007 June 13, 2007 Stan Mason...

Note: This page contains sample records for the topic "reliable off-grid power" 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

Multi-Area Power System Reliability and Production Costing  

Science Conference Proceedings (OSTI)

Multi-area power system operation can reduce costs without jeopardizing service reliability, but the interconnection of systems requires new means for estimating costs and reliability. This report describes methods for evaluating production costs and power system reliability in multi-area power systems.

1990-08-28T23:59:59.000Z

42

RELIABILITY OF WIND POWER FROM DISPERSED SITES: A PRELIMINARY ASSESSMENT  

E-Print Network (OSTI)

ON METHODOLOGY: FROM WIND POWER FREQUENCY TO LOSS-OF-LOADJ.P. , "Some Aspects of Wind Power Statistics, " J. of Appl.SCTION Reliability of Wind Power From Dispersed Sites: A Pr

Kahn, E.

2011-01-01T23:59:59.000Z

43

Wind Power Reliability: Breaking Down a Barrier | Department of Energy  

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

Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier Wind Power Reliability: Breaking Down a Barrier June 25, 2010 - 12:16pm Addthis EnerNex Corporation is developing documentation and validating generic wind turbine and plant models that test reliability. | File photo EnerNex Corporation is developing documentation and validating generic wind turbine and plant models that test reliability. | File photo Stephen Graff Former Writer & editor for Energy Empowers, EERE The steady increase of wind power on the grid presents new challenges for power system operators charged with making sure the grid stays up and running. "We need to ensure that we are going down a path that will lead to better reliability [with wind power]," said Bob Zavadil, an executive vice

44

Load Response Fundamentally Matches Power System Reliability Requirements  

Science Conference Proceedings (OSTI)

Responsive load is the most underutilized reliability resource available to the power system. Loads are frequently barred from providing the highest value and most critical reliability services; regulation and spinning reserve. Advances in communications and control technology now make it possible for some loads to provide both of these services. The limited storage incorporated in some loads better matches their response capabilities to the fast reliability-service markets than to the hourly energy markets. Responsive loads are frequently significantly faster and more accurate than generators, increasing power system reliability. Incorporating fast load response into microgrids further extends the reliability response capabilities that can be offered to the interconnected power system. The paper discusses the desired reliability responses, why this matches some loads' capabilities, what the advantages are for the power system, implications for communications and monitoring requirements, and how this resource can be exploited.

Kirby, Brendan J [ORNL

2007-01-01T23:59:59.000Z

45

Reliability of wind power from dispersed sites: a preliminary assessment  

DOE Green Energy (OSTI)

The reliability benefit of geographically dispersed wind turbine generators is analyzed. Electricity produced from wind machines experiences wide fluctuations of output at a given site. Yet the value of electricity is a function of its reliability. Pricing schedules have traditionally valued firm power, that is, reliably available power, much more highly than ''dump power;'' that is, power which is available intermittently on an ''if and when'' basis. The conventional wisdom on wind power suggests that it is unrealistic to expect that wind generation will be sufficiently reliable to displace conventional capacity. While such conclusions may be valid for analysis of individual sites, the main thesis of this paper is that geographical dispersal improves aggregate reliability.

Kahn, E.

1978-04-01T23:59:59.000Z

46

The Relationship between Competitive Power Markets and Grid Reliability. |  

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

The Relationship between Competitive Power Markets and Grid The Relationship between Competitive Power Markets and Grid Reliability. The Relationship between Competitive Power Markets and Grid Reliability. The U.S. Department of Energy and Natural Resources Canada should commission an independent study of the relationships among industry restructuring, competition in power markets, and grid reliability, and how those relationships should be managed to best serve the public interest. The Relationship between Competitive Power Markets and Grid Reliability. More Documents & Publications Blackout 2003: Blackout Final Implementation Report U.S. - Canada Power System Outage Task Force: Final Report on the Implementation of Task Force Recommendations Blackout 2003: Final Report on the August 14, 2003 Blackout in the United

47

North American Electric Reliability Council Power Outage Update |  

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

Power Outage Update Power Outage Update North American Electric Reliability Council Power Outage Update The bulk electric transmission system in the United States and Canada has been restored and is operating reliably. Many of the generating units that tripped off line during the outage have returned to service and additional generating units are expected to return to service over the weekend. Virtually all customers have been returned to electric service, although some customers will continue to experience rotating outages due to generating capacity availability. North American Electric Reliability Council Power Outage Update More Documents & Publications Electric System Update: Sunday August 17, 2003 North American Electric Reliability Council Outage Announcement NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report

48

EPRI Power Switching Safety and Reliability Project  

Science Conference Proceedings (OSTI)

The EPRI Switching Safety and Reliability (SS&R) Project features 24 completed studies to date in seven broad subject areas: 1) switching process, 2) tools and technological aids used in the planning and execution of switching, 3) switching errors, 4) incident analysis and investigation, 5) management methods and processes, 6) training, and 7) definitions and terminology. This report presents the history and accomplishments of the SS&R project as well as the extent of penetration of its findings into uti...

2008-12-16T23:59:59.000Z

49

MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER  

E-Print Network (OSTI)

1 MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER Engineering and Economics as efficient and optimal production and prices for real and reactive power. The purpose of this paper delivery of electric power. To accomplish this end, the paper opens with specification of an economic

50

Reliability Centered Maintenance (RCM) Technical Reference for Power Delivery  

Science Conference Proceedings (OSTI)

The overall goal of Reliability Centered Maintenance (RCM) is to improve the economic posture of a utility by promoting cost-effective application of maintenance resources. EPRI's RCM Technical Reference for Power Delivery provides utilities with essential technical data and guidance for conducting RCM studies of power delivery equipment and systems. It serves as the "handbook" of RCM for the utility power delivery sector.

1997-11-04T23:59:59.000Z

51

Reliability by design in distributed power transmission networks  

Science Conference Proceedings (OSTI)

The system operator of a large power transmission network must ensure that power is delivered whenever there is demand in order to maintain highly reliable electric service. To fulfill this mandate, the system operator must procure reserve capacity to ... Keywords: Inventory theory, Networks, Optimization, Power transmission

Mike Chen; In-Koo Cho; Sean P. Meyn

2006-08-01T23:59:59.000Z

52

Microgrids and Heterogeneous Power Quality and Reliability  

Science Conference Proceedings (OSTI)

This paper describes two stylized alternative visions of how the power system might evolve to meet future requirements for the high quality electricity service that modern digital economies demand, a supergrids paradigm and a dispersed paradigm. Some of the economics of the dispersed vision are explored, and perspectives are presented on both the choice of homogeneous universal power quality upstream in the electricity supply chain and on the extremely heterogeneous requirements of end-use loads. It is argued that meeting the demanding requirements of sensitive loads by local provision of high quality power may be more cost effective than increasing the quality of universal homogeneous supply upstream in the legacy grid. Finally, the potential role of microgrids in delivering heterogeneous power quality is demonstrated by reference to two ongoing microgrid tests in the U.S. and Japan.

LaCommare, Kristina; Marnay, Chris

2007-10-01T23:59:59.000Z

53

Reliable Power, LLC | Open Energy Information  

Open Energy Info (EERE)

Power, LLC Place New York Utility Id 56735 Utility Location Yes Ownership R Operates Generating Plant Yes References EIA Form EIA-861 Final Data File for 2010 - File1a1 LinkedIn...

54

Keeping the lights on [power system reliability  

Science Conference Proceedings (OSTI)

Of all the energy conversion processes in existence, the US electric power system is the largest and most complex. Unlike industries such as communications and transportation, where a demand in excess of supply produces a busy signal ...

J. D. Mountford; R. R. Austria

1999-06-01T23:59:59.000Z

55

EPRI Power Switching Safety and Reliability Project  

Science Conference Proceedings (OSTI)

This report presents brief descriptions of the publications of the EPRI Switching Safety and Reliability (SS&R) Project and of the presentations at the annual EPRI SS&R Conferences from 1996 (the year of the projects inception) until 2010. The SS&R Project was initiated in 1996. Its purpose was to analyze switching errors and related incidents and to determine effective ways of limiting their occurrence. At the 1997 EPRI SS&R Conference, it became clear to EPRI and to the participants that there was a ne...

2011-04-12T23:59:59.000Z

56

Power Quality and Reliability: Mutually Exclusive or Mutually Dependent?  

Science Conference Proceedings (OSTI)

The electrical transmission and distribution system, situated between central generation and the end use, is often described as the utility power delivery system and is a major factor in both power quality and reliability. The point of delivery is the user's service entrance. Service entrance reliability has been measured based on the number and duration of outages attributed to the local utility, while quality at the service entrance is measured primarily by variations in voltage.An average ...

2013-12-09T23:59:59.000Z

57

Correlating Power Quality Indices with System Reliability Indices  

Science Conference Proceedings (OSTI)

Energy companies can use better knowledge about existing power quality to target maintenance efforts, to establish a baseline for offering premium power services, and to use as a selling tool to sell sites with high power quality. Unfortunately, most energy companies do not have widespread, long-term records of power quality needed to provide this information. But energy companies often have good historical records of reliability indices for all circuits on their system (System Average Interruption Frequ...

2005-03-30T23:59:59.000Z

58

ASEO2011: Electric Power Projections for EMM Region - SERC Reliability  

Open Energy Info (EERE)

ASEO2011: Electric Power Projections for EMM Region - SERC Reliability ASEO2011: Electric Power Projections for EMM Region - SERC Reliability Corporation / Virginia-Carolina Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 88, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO Carolina EIA Electric power projections Virginia Data application/vnd.ms-excel icon ASEO2011: Electric Power Projections for EMM Region - SERC Reliability Corporation / Virginia-Carolina- Reference Case (xls, 259.3 KiB)

59

Wind Farm Diversification and Its Impact on Power System Reliability  

E-Print Network (OSTI)

As wind exploitation gains prominence in the power industry, the extensive use of this intermittent source of power may heavily rely on our ability to select the best combination of wind farming sites that yields maximal reliability of power systems at minimal cost. This research proposes a general method to minimize the wind park global power output variance by optimally distributing a predetermined number of wind turbines over a preselected number of potential wind farming sites for which the wind patterns are statistically known. The objective is to demonstrate the benefits of diversification for the reliability of wind-sustained systems through the search for steadier overall power outputs. Three years of wind data from the recent NREL/3TIER study in the western US provides the statistics for evaluating each site for their mean power output, variance and correlation with each other so that the best allocations can be determined. Some traditional reliability indices such as the LOLP are computed by using sequential Monte Carlo simulations to emulate the behavior of a power system uniquely composed of wind turbines and a load modeled from the 1996 IEEE RTS. It is shown that configurations featuring minimal global power output variances generally prove the most reliable for moderate load cases, provided the sites are not significantly correlated with the modeled load. Under these conditions, the choice of uncorrelated/negatively correlated sites is favored. The correlations between the optimized global wind power outputs and the modeled load are studied as well.

Degeilh, Yannick

2009-08-01T23:59:59.000Z

60

Reliability and Risk Significance: For Maintenance and Reliability Professionals at Nuclear Power Plants (Japanese Version)  

Science Conference Proceedings (OSTI)

This Japanese version of Report 1007079 explains the connections between the reliability and availability of commercial nuclear power plant components and their risk significance as measured by a probabilistic safety assessment (PSA). The scope covers the two most common measures of risk significance and how they can be used to inform plant decision makers about risk. It also provides guidance on achieving balance between reliability and availability when performing preventive maintenance (PM) and on est...

2012-06-19T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Reliability Assessment of Power Systems with Wind Power Generation.  

E-Print Network (OSTI)

??Wind power generation, the most promising renewable energy, is increasingly attractive to power industry and the whole society and becomes more significant in the portfolio (more)

Wang, Shu

2008-01-01T23:59:59.000Z

62

Distributed Energy Resources, Power Quality and Reliability - Background  

Science Conference Proceedings (OSTI)

Power quality [PQ] and power reliability [PR] gained importance in the industrialized world as the pace of installation of sensitive appliances and other electrical loads by utility customers accelerated, beginning in the mid 1980s. Utility-grid-connected customers rapidly discovered that this equipment was increasingly sensitive to various abnormalities in the electricity supply.

Schienbein, Lawrence A.; DeSteese, John G.

2002-01-31T23:59:59.000Z

63

Design and Performance of the Van Geet Off-Grid Home: Preprint  

DOE Green Energy (OSTI)

The Van Geet home near Denver, Colorado, demonstrates the successful integration of energy conservation measures and renewable energy supply in a beautiful, comfortable, energy-efficient, 295-m2 (3,176-ft2) off-grid home in a cold, sunny climate. Features include a tight envelope, energy-efficient appliances, passive solar heating (direct gain and Trombe wall), natural cooling, solar hot water, and photovoltaics. In addition to describing this house and its performance, this paper describes the recommended design process of (1) setting a goal for energy efficiency at the outset, (2) applying rules of thumb, and (3) using computer simulation to fine-tune the design. Performance monitoring and computer simulation are combined for the best possible analysis of energy performance. In this case, energy savings are estimated as 89% heating and cooling, 83% electrical, and nearly 100% domestic water heating. The heating and cooling energy use is 8.96 kJ/Cdaym2 (0.44 Btu/Fdayft2).

Barley, C. D.; Torcellini, P.; Van Geet, O.

2003-01-01T23:59:59.000Z

64

AEO2011: Electric Power Projections for EMM Region - Florida Reliability  

Open Energy Info (EERE)

Florida Reliability Florida Reliability Coordinating Council Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 74, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Electric Power Florida projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - Florida Reliability Coordinating Council- Reference Case (xls, 259.3 KiB)

65

AEO2011: Electric Power Projections for EMM Region - Reliability First  

Open Energy Info (EERE)

Reliability First Reliability First Corporation / West Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 83, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Electric Power projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - Reliability First Corporation / West- Reference Case (xls, 259.5 KiB)

66

NETL: News Release - DOE Tackles Electricity Reliability Problem with Power  

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

December 7, 2000 December 7, 2000 DOE Tackles Electricity Reliability Problem with Power Plant Improvement Initiative Agency Asks for Comments on Planned Solicitation PITTSBURGH, PA - The Department of Energy is asking the power industry and others to comment on a new fast-track program to demonstrate advanced power plant technologies that could help prevent recurrences of the brownouts and blackouts that have plagued major sections of the nation's electricity grid the past two years. The department today posted a draft of a "Power Plant Improvement Initiative" solicitation it plans to issue early next year. The solicitation will offer up to $95 million for advanced coal-based technologies that can improve the reliability of the U.S. electric power system.

67

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

Science Conference Proceedings (OSTI)

superior lighting services to low income people in off-grid areas of developing countries, many of whom currently rely on fuel based lighting sources such as kerosene. If this potential is to be achieved in the near term, however, manufacturers must produce off-grid lighting products that are inexpensive, perform well, and meet the needs of potential end users. At present, relatively few products meet all three of these goals. In this article, we report results from a detailed study of lighting use by micro-enterprises in two small towns in Kenya's Rift Valley Province. The work included a survey about lighting use by 50 small businesses, careful measurements of kerosene lighting use patterns and associated costs for 23 of these businesses, and a subsequent field trial in which 14 of the 23 businesses purchased and used low cost LED lamps over a number of months.

Radecsky, Kristen; Johnstone, Peter; Jacobson, Arne; Mills, Evan

2008-12-14T23:59:59.000Z

68

Reliability analysis for LEB ring magnet power system in SSC  

Science Conference Proceedings (OSTI)

The LEB ring magnet power system contains six subsystems, supervisory control, power supplies, regulation, DC bus, resonant cells, and fault sensing network. The system availability of the total LEB RMPS is required to be 0.999. The work in this paper is to allocate the overall LEB RMPS reliability requirement into reliability requirements for each of the subsystems and lower-tier items. The Feasibility-of-Objective technique combining with engineering experience is the key for the allocation. MIL-HDBK-217F is used to derate SCR components. 7 refs., 5 figs.

Smedley, K.

1991-11-01T23:59:59.000Z

69

Reliability assessment of autonomous power systems incorporating HVDC interconnection links  

SciTech Connect

The objective of this paper is to present an improved computational method for the overall reliability assessment of autonomous power systems that may or may not contain HVdc interconnection links. This is a hybrid method based on a Monte-Carlo simulation sequential approach which incorporates an analytical approach for the reliability modeling of the HVdc transmission links. The developed models and techniques have been implemented into a computer program that can be used to simulate the operational practices and characteristics of the overall system under study efficiently and realistically. A set of reliability indices are calculated for each load-point of interest and the entire system while a set of additional indices is calculated for quantifying the reliability performance of the interconnection links under the specified operating requirements. The analysis of a practical system is also included for a number of studies representing its various operating and design characteristics.

Dialynas, E.N.; Koskolos, N.C. [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering; Agoris, D. [Public Power Corp., Athens (Greece)

1996-01-01T23:59:59.000Z

70

Reliability Centered Maintenance (RCM) Technical Reference for Power Delivery  

Science Conference Proceedings (OSTI)

This technical reference expands on the original reliability centered maintenance (RCM) research performed by EPRI in the late 1990s. It incorporates nearly ten years of utility RCM experience in power delivery and emphasizes the requirements of managing and measuring maintenance programs. RCM's overall goal is to improve the economic posture of a utility by promoting cost-effective application of maintenance resources. This "Technical Reference for Power Delivery" serves as the "handbook" of RCM for the...

2003-12-10T23:59:59.000Z

71

Distribution System Reliability Practices: Noteworthy Practices at Georgia Power  

Science Conference Proceedings (OSTI)

In 2010, EPRI initiated a multi-year effort to identify and illustrate noteworthy practices that utilities are using to meet the service reliability expectations of their customers. EPRI research focused on four host utilities: Ameren Corporation, Central Hudson Gas & Electric Corporation, Alabama Power, and We Energies. In 2011, EPRI completed research at American Electric Power Company (AEP) and initiated research with Memphis Light, Gas and Water (MLGW) and Duke Energy. In 2012, EPRI ...

2013-11-25T23:59:59.000Z

72

Microgrids and Heterogeneous Power Quality and Reliability: Matching the  

E-Print Network (OSTI)

LBNL-63524 Microgrids and Heterogeneous Power Quality and Reliability: Matching the Quality under review by the Transactions of the Industry Applications Society of IEE Japan 1 Microgrids of universal homogeneous supply upstream in the grid. Finally, the potential role of microgrids in delivering

73

Security-Constrained Adequacy Evaluation of Bulk Power System Reliability  

E-Print Network (OSTI)

Security-Constrained Adequacy Evaluation of Bulk Power System Reliability Fang Yang, Student Member. Stefopoulos, Student Member, IEEE Abstract -- A framework of security-constrained adequacy evaluation (SCAE electric load while satisfying security constraints. It encompasses three main steps: (a) critical

74

Power Electronics Reliability Kick Off Meeting ? Silicon Power...  

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

failure modes of post-silicon power electronic (PE) devices such as silicon carbide (SiC) and gallium nitride (GaN) switches. * Seek opportunities for condition monitoring (CM)...

75

Thermal Performance and Reliability of Bonded Interfaces for Power Electronics Packaging Applications (Presentation)  

SciTech Connect

This presentation discusses the thermal performance and reliability of bonded interfaces for power electronics packaging applications.

Devoto, D.

2013-07-01T23:59:59.000Z

76

Integrated approach to economical, reliable, safe nuclear power production  

SciTech Connect

An Integrated Approach to Economical, Reliable, Safe Nuclear Power Production is the latest evolution of a concept which originated with the Defense-in-Depth philosophy of the nuclear industry. As Defense-in-Depth provided a framework for viewing physical barriers and equipment redundancy, the Integrated Approach gives a framework for viewing nuclear power production in terms of functions and institutions. In the Integrated Approach, four plant Goals are defined (Normal Operation, Core and Plant Protection, Containment Integrity and Emergency Preparedness) with the attendant Functional and Institutional Classifications that support them. The Integrated Approach provides a systematic perspective that combines the economic objective of reliable power production with the safety objective of consistent, controlled plant operation.

1982-06-01T23:59:59.000Z

77

Reliability of Rechargeable Batteries in a Photovoltaic Power Supply System  

DOE Green Energy (OSTI)

We investigate the reliability If a rechargeable battery acting as the energy storage component in a photovoltaic power supply system. A model system was constructed for this that includes the solar resource, the photovoltaic power supp Iy system, the rechargeable battery and a load. The solar resource and the system load are modeled as SI ochastic processes. The photovoltaic system and the rechargeable battery are modeled deterministically, imd an artificial neural network is incorporated into the model of the rechargeable battery to simulate dartage that occurs during deep discharge cycles. The equations governing system behavior are solved simultaneously in the Monte Carlo framework and a fwst passage problem is solved to assess system reliability.

Barney, P.; Jungst, R.G., Ingersoll, D.; O'Gorman, C.; Paez, T.L.; Urbina, A.

1998-11-30T23:59:59.000Z

78

Power Electronics Reliability Kick Off Meeting … Silicon Power Corp. & Sandia Labs  

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

Reliability Reliability Analysis Annual DOE Peer Review Meeting October 8, 2009 Mark A. Smith - Systems Readiness & Sustainment Technologies Department Stan Atcitty - Energy Infrastructure and Distributed Energy Resources Department Sandia National Laboratories Technologies & Customers * Complex Systems Modeling & Simulation * Life Cycle & Total Ownership Costs Analyses * Design for Reliability/Maintainability * Prognostics & Health Management (PHM) * Integrated Logistics Support * Technology Management Optimization * Asset Acquisition & Mission Planning * Risk Assessment & Risk Management Technologies Support Broad Customer Base Automotive Power Electronics Aviation Nuclear Power Coal-Fired Power Petroleum Tools & Technologies Validated Through Broad Use

79

AEO2011: Electric Power Projections for EMM Region - SERC Reliability  

Open Energy Info (EERE)

Gateway Gateway Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 85, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Electric Power projection Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - SERC Reliability Corporation / Gateway - Reference Case (xls, 259 KiB)

80

AEO2011: Electric Power Projections for EMM Region - Midwest Reliability  

Open Energy Info (EERE)

West West Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 76, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Electric Power midwest projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - Midwest Reliability Council / West- Reference Case (xls, 259.1 KiB)

Note: This page contains sample records for the topic "reliable off-grid power" 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

AEO2011: Electric Power Projections for EMM Region - Midwest Reliability  

Open Energy Info (EERE)

East East Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 75, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEIO EIA Electric Power projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - Midwest Reliability Council / East - Reference Case (xls, 258.6 KiB) Quality Metrics

82

AEO2011: Electric Power Projections for EMM Region - Reliability First  

Open Energy Info (EERE)

9643 9643 Varnish cache server AEO2011: Electric Power Projections for EMM Region - Reliability First Corporation / Michigan Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 82, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Electric Power Michigan projections Data Quality Metrics Level of Review Peer Reviewed

83

AEO2011: Electric Power Projections for EMM Region - SERC Reliability  

Open Energy Info (EERE)

Southeastern Southeastern Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 86, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Electric Power projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - SERC Reliability Corporation / Southeastern- Reference Case (xls, 259.3 KiB)

84

AEO2011: Electric Power Projections for EMM Region - SERC Reliability  

Open Energy Info (EERE)

Central Central Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 87, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO central EIA Electric power projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - SERC Reliability Corporation / Central- Reference Case (xls, 259.1 KiB)

85

Power Supply Reliability Estimates for Experimental Fusion Facilities  

Science Conference Proceedings (OSTI)

This paper presents the results of a task to analyze the operating experience data for large, pulsed power supplies used at the DIII-D tokamak. This activity supports the International Thermonuclear Experimental Reactor (ITER) project by giving fusion-specific reliability values for large power supplies that energize neutral beams and magnets. These failure rate data are necessary to perform system availability calculations and to make estimates of the frequency of safety-significant events (e.g., power supply arcs or fires) that might occur in other fusion facilities such as ITER. The analysis shows that the DIII-D data results compare well with the results of similar data analysis work that the Italian National Agency for New Technologies, Energy and the Environment (ENEA) has performed on the JET tokamak and compare fairly with data from two accelerators.

Cadwallader, lee; Pinna, Tonio; Petersen, Peter

2006-11-01T23:59:59.000Z

86

Power Electronics Reliability Kick Off Meeting … Silicon Power Corp. & Sandia Labs  

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

Reliability Reliability 2010 Update Conference - DOE ESS Program November 4, 2010 Mark A. Smith - Systems Readiness & Sustainment Technologies Robert Kaplar, Matthew Marinella, Reinhard Brock, James Stanley, and Michael King - Radiation Hard CMOS Technology Stan Atcitty - Energy Infrastructure and Distributed Energy Resources Sandia National Laboratories Thanks to Dr. Imre Gyuk for supporting this work. Project Goals * Use experiments and modeling to investigate and characterize stress-related failure modes of post-silicon power electronic (PE) devices such as silicon carbide (SiC) and gallium nitride (GaN) switches. * Seek opportunities for condition monitoring (CM) and prognostics and health management (PHM) to further enhance the reliability of power electronics devices and equipment.

87

Reliability of the emergency ac power system at nuclear power plants  

SciTech Connect

This paper contains an evaluation of the onsite ac power system reliability. The approach to determine the onsite system reliability is to gather from the operating nuclear plants detailed data that have not been available to the NRC, to select typical but detailed design features, and to combine the two to determine ac power system reliability for different designs. Fault trees were constructed from the specific designs, and the categorized data will be used to calculate a spectrum of the expected frequency of station blackout.

Battle, R.E.; Campbell, D.J.; Baranowsky, P.W.

1982-01-01T23:59:59.000Z

88

ANALYSIS OF OFF-GRID, OFF-PIPE HOUSING FOR HOT-HUMID AND HOT-ARID CLIMATES  

E-Print Network (OSTI)

This paper investigates the feasibility of off-grid, off-pipe housing in hot-humid and hot-arid climates in the U.S. The study aims to eliminate the need for non-renewable sources of energy and municipal water in residences by using off-grid, off-pipe design approach. To accomplish this, a 2001 International Energy Conservation Code compliant house in Houston, TX and Phoenix, AZ was simulated to determine the base-case energy and water use. Based on the availability of on-site renewable energy and water sources (i.e., solar, wind and biomass and rainfall) in these locations, energy and water efficiency measures were selected in order to reduce the energy and water use to a level that could be met solely by on-site renewable resources. Finally, the sizing of the renewable energy and rainwater harvesting systems was performed to provide for daily needs as well as cumulative needs during the critical periods, in order to achieve complete self sufficiency in terms of energy and water use. The analysis was performed by integrating the results of DOE-2.1e, F-Chart and PV F-Chart programs, and cumulative rainwater supply and water demand analysis. The simulation results demonstrate the differences between the priorities for energy efficiency, water-efficiency and renewable energy measures in hot-humid and hot-arid climates.

Malhotra, M.; Haberl, J.

2008-12-01T23:59:59.000Z

89

Mobile Generation Options to Enhance Customer Service Reliability: Case Study for the New York Power Authority  

Science Conference Proceedings (OSTI)

A community served by New York Power Authority (NYPA) has a history of long-term power reliability problems. To resolve these reliability problems, NYPA has evaluated several mobile distributed generation (DIS-GEN) options.

1997-12-23T23:59:59.000Z

90

Improving the reliability of wind power through spatially distributed wind generation.  

E-Print Network (OSTI)

??Wind power is a fast-growing, sustainable energy source. However, the problem of wind variability as it relates to wind power reliability is an obstacle to (more)

Fisher, Samuel Martin

2012-01-01T23:59:59.000Z

91

Reliability analysis of a utility-scale solar power plant  

DOE Green Energy (OSTI)

This paper presents the results of a reliability analysis for a solar central receiver power plant that employs a salt-in-tube receiver. Because reliability data for a number of critical plant components have only recently been collected, this is the first time a credible analysis can be performed. This type of power plant will be built by a consortium of western US utilities led by the Southern California Edison Company. The 10 MW plant is known as Solar Two and is scheduled to be on-line in 1994. It is a prototype which should lead to the construction of 100 MW commercial-scale plants by the year 2000. The availability calculation was performed with the UNIRAM computer code. The analysis predicted a forced outage rate of 5.4% and an overall plant availability, including scheduled outages, of 91%. The code also identified the most important contributors to plant unavailability. Control system failures were identified as the most important cause of forced outages. Receiver problems were rated second with turbine outages third. The overall plant availability of 91% exceeds the goal identified by the US utility study. This paper discuses the availability calculation and presents evidence why the 91% availability is a credible estimate. 16 refs.

Kolb, G.J.

1992-08-01T23:59:59.000Z

92

Reliability analysis of a utility-scale solar power plant  

DOE Green Energy (OSTI)

This paper presents the results of a reliability analysis for a solar central receiver power plant that employs a salt-in-tube receiver. Because reliability data for a number of critical plant components have only recently been collected, this is the first time a credible analysis can be performed. This type of power plant will be built by a consortium of western US utilities led by the Southern California Edison Company. The 10 MW plant is known as Solar Two and is scheduled to be on-line in 1994. It is a prototype which should lead to the construction of 100 MW commercial-scale plants by the year 2000. The availability calculation was performed with the UNIRAM computer code. The analysis predicted a forced outage rate of 5.4% and an overall plant availability, including scheduled outages, of 91%. The code also identified the most important contributors to plant unavailability. Control system failures were identified as the most important cause of forced outages. Receiver problems were rated second with turbine outages third. The overall plant availability of 91% exceeds the goal identified by the US utility study. This paper discuses the availability calculation and presents evidence why the 91% availability is a credible estimate. 16 refs.

Kolb, G.J.

1992-01-01T23:59:59.000Z

93

Recommendations to Address Power Reliability Concerns Raised as a Result of  

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

to Address Power Reliability Concerns Raised as a to Address Power Reliability Concerns Raised as a Result of Pending Environmental Regulations for Electric Generation Stations Recommendations to Address Power Reliability Concerns Raised as a Result of Pending Environmental Regulations for Electric Generation Stations Memorandum from the Electricity Advisory Committee to Secretary Chu and Assistant Secretary Patricia Hoffman on recommendations to address power reliability concerns raised as a result of pending environmental regulations for electric generation stations. Recommendations to Address Power Reliability Concerns Raised as a Result of Pending Environmental Regulations for Electric Generation Stations More Documents & Publications DOE Response to EAC Recommendations - March 2012 Interdependence of Electricity System Infrastructure and Natural Gas

94

Reliability centered maintenance of power transformers and circuit breakers  

SciTech Connect

At the Bonneville Power Administration (BPA), we have historically maintained high voltage equipment. Including transformers and power circuit breakers, on a time driven basis. While this has served our needs in the past, newer methods are needed to effectively maintain the power system in future years. Today aging equipment, maintenance backlogs, and budget constraints are a reality. BPA has initiated a research and development project to examine reliability centered maintenance (RCM) as an alternative to time based maintenance on high voltage equipment. Under RCM, the performance of each place of equipment is to be monitored by observing many operating parameters. For example, with circuit breakers we will observe (measure) the trip time, accumulated contact wear using I{sup 2}T, timing of the mechanism, plus several other parameters. Equipment performing below a predetermined level, or equipment having accumulated a large amount of ``usage`` will receive maintenance. The maintenance will restore full performance and preserve an acceptable service life for that piece of equipment. To develop and evaluate RCM concepts, BPA is installing a prototype system at our Alvey Substation on 4 transformers and 25 breakers.

Purucker, S.L.; Goeltz, R.T. [Oak Ridge National Lab., TN (United States); Hemmelman, K.; Price, R. [Bonneville Power Administration, Van Couver, WA (United States)

1992-08-01T23:59:59.000Z

95

Reliability Improvement Programs in Steam Distribution and Power Generation Systems  

E-Print Network (OSTI)

This paper will present alternatives to costly corrective maintenance of the steam trap and condensate return system, and the paybacks associated with instituting a program of planned maintenance management of that system. Energy costs can be reduced by 10% and maintenance costs by 20%, while achieving other tangible improvements in the reliability and efficiency of the system. Recent studies have shown that more than 40% of all installed steam traps and 20% of certain types of valves need some form of corrective action. The majority of all high backpressure problems in condensate return systems are due to poor design criteria. in expandlng or retrofitting existing return systems. By instituting a maintenance management program, a 95% reliability can be gained within two to four annual maintenance cycles. The associated operational problems can be greatly reduced. The maintenance management concept involves: 1) centralized project management; 2) diagnostic and inspection expertise; 3) system troubleshooting; 4) data analysis, reporting and recommendations; 5) maintenance repairs and follow-up; and 6) software and data base management. Several case studies, in which the concept has been successfully applied, will be presented. Energy costs, which have been on the rise for the past ten years, have now leveled off due to global supply and demand issues. But that is not true of the costs to maintain capital equipment such as steam distribution and power generation systems. Those costs continue to rise. If the basic principles of maintenance management are applied, when upgrading poorly maintained steam systems, those upgraded systems can be a fast payback of savings in energy, manpower and inventory. Three major areas where the savings can be gained are the steam traps, valve and condensate return systems. Such systems can be found in power generation, steam distribution, and in all types of durable and non-durable industrial productions.

Petto, S.

1987-09-01T23:59:59.000Z

96

Generation reliability assessment in power markets using Monte Carlo simulation and soft computing  

Science Conference Proceedings (OSTI)

Deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. In the present research, generation reliability is considered, and a method for its assessment is proposed using intelligent systems. ... Keywords: Generation reliability, Intelligent systems, Monte Carlo simulation, Power pool market

H. Haroonabadi; M. -R. Haghifam

2011-12-01T23:59:59.000Z

97

Generation reliability assessment in power pool market using MCS and intelligent systems  

Science Conference Proceedings (OSTI)

Deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. In this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. Also, because ... Keywords: generation reliability, intelligent systems, monte carlo simulation, power pool market

H. Haroonabadi; M.-R. Haghifam

2008-07-01T23:59:59.000Z

98

Performance and Reliability of Interface Materials for Automotive Power Electronics (Presentation)  

DOE Green Energy (OSTI)

Thermal management and reliability are important because excessive temperature can degrade the performance, life, and reliability of power electronics and electric motors. Advanced thermal management technologies enable keeping temperature within limits; higher power densities; and lower cost materials, configurations and systems. Thermal interface materials, bonded interface materials and the reliability of bonded interfaces are discussed in this presentation.

Narumanchi, S.; DeVoto, D.; Mihalic, M.; Paret, P.

2013-07-01T23:59:59.000Z

99

The Sachet Telecom Architecture for Off Grid Locations: An Indian Case Study  

Science Conference Proceedings (OSTI)

In the light of past attempts to provide universal access to telephony and data connectivity, this paper outlines a new telecom architecture tailored to the needs of rural areas, the Sachet Telecom technology. It presents an economic model for an Indian ... Keywords: Rural, Sachet Telecom Architecture, Solar Power, Telecom, Universal Service

Rohit Prasad; Rakesh Mehrotra

2012-04-01T23:59:59.000Z

100

Application of crossflow turbine in off-grid pico hydro renewable energy system  

Science Conference Proceedings (OSTI)

This paper reviews small-scale hydro turbines and their applications at power production environment while focusing on the application of cross-flow turbine in pico hydro set-up, a run-of-river scheme which does not require dam or reservoir for water ... Keywords: cross-flow turbine, pico hydro, renewable energy, run-of-river, small-scale hydro

J. A. Razak; Y. Ali; M. A. Alghoul; Mohammad Said Zainol; Azami Zaharim; K. Sopian

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Reliability-aware power management for parallel real-time applications with precedence constraints  

Science Conference Proceedings (OSTI)

The negative effects of the Dynamic Voltage and Frequency Scaling (DVFS) technique on the system reliability has recently promoted the research on reliability-aware power management (RAPM). RAPM aims at reducing the system energy consumption while preserving ... Keywords: shared-recovery based scheme, reliability aware power management, parallel real-time application, precedence constraint, dynamic voltage technique, frequency scaling technique, parallel real time application, shared memory multiprocessor system, NP-hard problem, RAPM heuristics, dynamic slack, system reliability

Yifeng Guo; Dakai Zhu; H. Aydin

2011-07-01T23:59:59.000Z

102

Research of Operation Reliability and Power Quality for Four Sets of Main Transformer Substations  

Science Conference Proceedings (OSTI)

The problems of the operation performance, reliability and power quality for four main transformer substations are discussed in this paper. Because of the increasing of power load and the short supply of land resources, the method provided has the necessity ... Keywords: Local grid, transformer, economy, reliability, power quality

Xilin Zhang, Bin Zhang, Guannan Wang, Chengmin Wang

2012-07-01T23:59:59.000Z

103

Assessment Methods and Operating Tools for Grid Reliability: An Executive Report on the Transmission Program of EPRI's Power Deliver y Reliability Initiative  

Science Conference Proceedings (OSTI)

Maintaining a high level of power grid reliability is one of the most pressing issues facing the electric power industry today. This report summarizes the achievements and planned activities of the transmission portion of the industry-wide Power Delivery Reliability Initiative, which is developing new tools and methods for assessing and improving grid reliability.

2001-03-26T23:59:59.000Z

104

Illuminating the Pecking Order in Off-Grid Lighting: A Demonstration of LED Lighting for Saving Energy in the Poultry Sector  

Science Conference Proceedings (OSTI)

The Lumina Project and Lighting Africa conducted a full-scale field test involving a switch from kerosene to solar-LED lighting for commercial broiler chicken production at an off-grid farm in Kenya. The test achieved lower operating costs, produced substantially more light, improved the working environment, and had no adverse effect on yields. A strategy using conventional solar-fluorescent lighting also achieved comparable yields, but entailed a six-fold higher capital cost and significantly higher recurring battery replacement costs. Thanks to higher energy and optical efficiencies, the LED system provided approximately twice the illumination to the chicken-production area and yet drew less than half the power.At the study farm, 3000 chickens were grown in each of three identical houses under kerosene, fluorescent, and LED lighting configurations. Under baseline conditions, a yearly expenditure of 1,200 USD is required to illuminate the three houses with kerosene. The LED system eliminates this fuel use and expense with a corresponding simple payback time of 1.5 years, while the solar-fluorescent system has a payback time of 9.3 years. The corresponding reduction in fuel expenditure in both cases represents a 15percent increase in after-tax net income (revenues minus expenses) across the entire business operation. The differential cost-effectiveness between the LED and fluorescent systems would be substantially greater if the fluorescent system were upsized to provide the same light as the LED system. Providing light with the fluorescent or LED systems is also far more economical than connecting to the grid in this case. The estimated grid-connection cost at this facility is 1.7 million Kenya Schillings (approximately 21,250 USD), which is nearly six-times the cost of the fluorescent system and 35-times the cost of the LED system.The LED system also confers various non-energy benefits. The relative uniformity of LED lighting, compared to the fluorescent or kerosene lighting, reduced crowding which in turn created a less stressful environment for the chickens. The far higher levels of illumination also created a better environment for the workers, while eliminating the time required for obtaining fuel and maintaining kerosene lanterns. An additional advantage of the LED system relative to the solar fluorescent system was that the former does not require a skilled technician to carry out the installation. The portable LED system lighting layout is also more easily adjusted than that of the hardwired fluorescent systems. Furthermore, switching to the LED system avoids over one metric ton of carbon dioxide emissions per house on an annual basis compared to kerosene. There is high potential for replication of this particular LED lighting strategy in the developing world. In order to estimate the scale of kerosene use and the potential for savings, more information is needed on the numbers of chickens produced off-grid, as well as lighting uses for other categories of poultry production (egg layers, indigenous broilers ). Our discovery that weight gain did not slow in the solar-fluorescent house after it experienced extended lighting outages beginning on day 14 of the 35-day study suggests that conventional farming practices in Kenyan broiler operations may call for more hours of lighting than is needed to achieve least-cost production.

Tracy, Jennifer; Mills, Evan

2010-11-06T23:59:59.000Z

105

Reliability Assessment of a Power Grid with Customer Operated CHP Systems Using Monte Carlo Simulation.  

E-Print Network (OSTI)

??This thesis presents a method for reliability assessment of a power grid with distributed generation providing support to the system. The distributed generation units considered (more)

Manohar, Lokesh Prakash

2009-01-01T23:59:59.000Z

106

Preliminary reliability allocation and estimation, Brayton Isotope Power System. Report 76-311851  

DOE Green Energy (OSTI)

A summary of the Brayton Isotope Power System (BIPS) from the standpoint of its potential for long and reliable operation is presented in tabular form.

Miller, L.G.

1976-06-01T23:59:59.000Z

107

Off-grid in a cold city: The Alberta sustainable home  

SciTech Connect

The Alberta Sustainable Home is a new suburban three-bedroom house and office that will soon be independent of the sewer, electric, and water systems. Located in the cold, dry, sunny climate of Calgary, AB, the home is now demonstrating the feasibility of environmentally sustainable, cost-saving devices-from Eco-studs in the framework to graywater heat recovery devices. Although it was built for about the same price as a comparable conventional home, the Alberta Sustainable Home has received a preferential mortgage rate, is expected to have an unusually high resale value, and will cost about $1,500 per year (Canadian) less for utilities. The Alberta Sustainable Home was built privately by Autonomous and Sustainable Housing Incorporated (ASH), in partnership with some 215 companies worldwide. Construction began in September 1993, and the designers and builders have lived and worked in the building since April 1994. Topics include the following: space and water heating; airtight construction; insulation; windows; refrigeration; saving water; low embodied energy; retrofitting; pollutant control; less power.

Rieger, T.; Byrne, J. [eds.

1996-03-01T23:59:59.000Z

108

Analysis of Actual Operating Conditions of an Off-grid Solid Oxide Fuel Cell  

DOE Green Energy (OSTI)

Fuel cells have been proposed as ideal replacements for other technologies in remote locations such as Rural Alaska. A number of suppliers have developed systems that might be applicable in these locations, but there are several requirements that must be met before they can be deployed: they must be able to operate on portable fuels, and be able to operate with little operator assistance for long periods of time. This project was intended to demonstrate the operation of a 5 kW fuel cell on propane at a remote site (defined as one without access to grid power, internet, or cell phone, but on the road system). A fuel cell was purchased by the National Park Service for installation in their newly constructed visitor center at Exit Glacier in the Kenai Fjords National Park. The DOE participation in this project as initially scoped was for independent verification of the operation of this demonstration. This project met with mixed success. The fuel cell has operated over 6 seasons at the facility with varying degrees of success, with one very good run of about 1049 hours late in the summer of 2006, but in general the operation has been below expectations. There have been numerous stack failures, the efficiency of electrical generation has been lower than expected, and the field support effort required has been far higher than expected. Based on the results to date, it appears that this technology has not developed to the point where demonstrations in off road sites are justified.

Dennis Witmer; Thomas Johnson; Jack Schmid

2008-12-31T23:59:59.000Z

109

Understanding Bulk Power Reliability: The Importance of Good Data and A  

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

Understanding Bulk Power Reliability: The Importance of Good Data and A Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources Title Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources Publication Type Report Year of Publication 2012 Authors Fisher, Emily, Joseph H. Eto, and Kristina Hamachi LaCommare Pagination 11 Date Published 01/2012 Publisher LBNL City Berkeley Keywords electricity markets and policy group, energy analysis and environmental impacts department, power system reliability, power system reliability metrics, transmission system reliability Abstract Bulk power system reliability is of critical importance to the electricity sector. Complete and accurate information on events affecting the bulk power system is essential for assessing trends and efforts to maintain or improve reliability. Yet, current sources of this information were not designed with these uses in mind. They were designed, instead, to support real-time emergency notification to industry and government first-responders. This paper reviews information currently collected by both industry and government sources for this purpose and assesses factors that might affect their usefulness in supporting the academic literature that has relied upon them to draw conclusions about the reliability of the US electric power system.

110

Framework for Stochastic Reliability of Bulk Power System  

Science Conference Proceedings (OSTI)

Value-based reliability assessment is a useful aid to effective decision making about short- and long-term transmission planning and operation. This report describes efforts to develop additional functionality in EPRI's Transmission Reliability Evaluation for Large Scale Systems (TRELSS) program.

1998-03-26T23:59:59.000Z

111

Use of fuel cells for improving on-site emergency power availability and reliability ad nuclear power plants  

E-Print Network (OSTI)

To assure safe shutdown of a nuclear power plant, there must always be reliable means of decay heat removal provided, in last resort, by an Emergency Core Cooling System (ECCS). Currently the majority of nuclear power ...

Akkaynak, Derya

2005-01-01T23:59:59.000Z

112

PV AND GRID RELIABILITY: AVAILABILITY OF PV POWER DURING CAPACITY SHORTFALLS  

E-Print Network (OSTI)

PV AND GRID RELIABILITY: AVAILABILITY OF PV POWER DURING CAPACITY SHORTFALLS Richard Perez reliability benefits, is to look at PV availability during instances of major grid stress and supply shortfall of these events and show that PV+end-use load control could be 100% reliable with only a minimal end-use impact. 2

Perez, Richard R.

113

Maximal network reliability with optimal transmission line assignment for stochastic electric power networks via genetic algorithms  

Science Conference Proceedings (OSTI)

This study proposes a genetic algorithm based method integrating the minimal paths and the recursive sum of disjoint products to find maximal network reliability with optimal transmission line assignment for a stochastic electric power network. In our ... Keywords: Genetic algorithm, Maximal network reliability, Recursive sum of disjoint products, Stochastic electric power network, Transmission line assignment

Yi-Kuei Lin; Cheng-Ta Yeh

2011-03-01T23:59:59.000Z

114

Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market  

SciTech Connect

Low cost rechargeable flashlights that use LED technology are increasingly available in African markets. While LED technology holds promise to provide affordable, high quality lighting services, the widespread dissemination of low quality products may make it difficult to realize this potential. This study includes performance results for three brands of commonly available LED flashlights that were purchased in Kenya in 2009. The performance of the flashlights was evaluated by testing five units for each of the three brands. The tests included measurements of battery capacity, time required to charge the battery, maximum illuminance at one meter, operation time and lux-hours from a fully charged battery, light distribution, and color rendering. All flashlights tested performed well below the manufacturers? rated specifications; the measured battery capacity was 30-50percent lower than the rated capacity and the time required to fully charge the battery was 6-25percent greater than the rated time requirement. Our analysis further shows that within each brand there is considerable variability in each performance indicator. The five samples within a single brand varied from each other by as much as 22percent for battery capacity measurements, 3.6percent for the number of hours required for a full charge, 23percent for maximum initial lux, 38percent for run time, 11percent for light distribution and by as much as 200percent for color rendering. Results obtained are useful for creating a framework for quality assurance of off-grid LED products and will be valuable for informing consumers, distributors and product manufacturers about product performance.

Tracy, Jennifer; Jacobson, Arne; Mills, Evan

2010-03-02T23:59:59.000Z

115

Innergy Power Corporation Inc | Open Energy Information  

Open Energy Info (EERE)

Product US manufacturer of rechargeable sealed-lead batteries and solar charger for off-grid use. References Innergy Power Corporation Inc1 LinkedIn Connections CrunchBase...

116

RELIABILITY OF WIND POWER FROM DISPERSED SITES: A PRELIMINARY ASSESSMENT  

E-Print Network (OSTI)

Coincidence of Demand and Wind Resource Diurnal PowerOutput Variations for Three Wind Regimes List of TablesCAPACITY CREDIT FOR WIND ARRAYS: THE PROBLEM . . . . . . .

Kahn, E.

2011-01-01T23:59:59.000Z

117

Estimation of the reliability of space nuclear power systems by probabilistic risk assessment techniques  

E-Print Network (OSTI)

A successful space mission depends on the reliable operation of the spacecraft's electrical power system. For payloads requiring high power levels, various designs of space nuclear power systems (SNPS) are available. Designers have conducted limited spacecraft component reliability analysis and full-scale testing of SNPS is impractical. Therefore, a properly-designed reliability analysis, systematically applied, may provide an effective means for making judgments about the relative reliability of competing SNPSS. This work examines the applicability of probabilistic risk assessment (PRA) techniques for estimating SNPS reliability from design studies. The nuclear electric power industry has used PRA techniques to accurately analyze the reliability of complex systems. However, these PRA techniques for nuclear power plants require modifications for SNPS reliability assessment. This study validates these modified PRA techniques by examining the reliability of the SP-I 00 and the Small Ex-core Heat Pipe Thermionic Reactor (SEHPTR). The present analysis focuses on the SNPS failure to produce nominal electrical power. Typical events threatening the reliability of the SNPS will consist of hardware failures, external events, and command errors or software deficiencies. This work involves the following systematic steps for each SNPS: e System familiarization Performance of a "failure modes and effects analysis" to deten-nine how the failures of components might cause a system failure Construction of system and component fault trees Reliability data estimationFault tree quantification (using CAFTA'O and UNCERT'O) 'Me reliability data estimation relies on occurrence probabilities for each component failure mode. Various methods for estimating failure rates from existing reliability databases or from engineering approximations were investigated. This work employs the Monte Carlo sampling technique to associate numerical uncertainty levels with the quantitative reliability estimates produced for each SNPS. The quantitative results estimate the reliability of the systems studied as 0.9494 for the SP-100 and 0.9453 for the SEHPTR. The associated error factor is approximately 2.0, corresponding to the system modeling and reliability data uncertainties. Importance measures and sensitivity analyses indicate that the fuel damage, sensor, electrical component, mechanical component, drive, and power conditioning, control, and distribution subsystem failures can be critical to the system's reliability.

Gutner, Sophie Isabelle

1996-01-01T23:59:59.000Z

118

Microsoft PowerPoint - NERC Reliability Standards and Mandatory Compliance Presentation to Hydro-Power Conference - June 2007.p  

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

NERC Reliability NERC Reliability NERC Reliability NERC Reliability Standards and Standards and Mandatory Compliance Mandatory Compliance Hydro Hydro - - Power Conference Power Conference June 13, 2007 June 13, 2007 Stan Mason Stan Mason 2 EPACT 2005 EPACT 2005 Congress approved the related legislation Congress approved the related legislation in August 2005 in August 2005 It required creation of an Electric It required creation of an Electric Reliability Organization (ERO) to be Reliability Organization (ERO) to be approved by the Federal Energy approved by the Federal Energy Regulatory Commission (FERC) Regulatory Commission (FERC) It mandated Standards that would be It mandated Standards that would be approved by FERC with financial sanctions approved by FERC with financial sanctions

119

Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources  

Science Conference Proceedings (OSTI)

Bulk power system reliability is of critical importance to the electricity sector. Complete and accurate information on events affecting the bulk power system is essential for assessing trends and efforts to maintain or improve reliability. Yet, current sources of this information were not designed with these uses in mind. They were designed, instead, to support real-time emergency notification to industry and government first-responders. This paper reviews information currently collected by both industry and government sources for this purpose and assesses factors that might affect their usefulness in supporting the academic literature that has relied upon them to draw conclusions about the reliability of the US electric power system.

Fisher, Emily; Eto, Joseph H.; LaCommare, Kristina Hamachi

2011-10-19T23:59:59.000Z

120

Case Study - Florida Power & Light - Smart Grid Solutions Strengthen Reliability and Services - July 2012.pdf  

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

Florida Power & Light Florida Power & Light July 2012 1 Smart devices have been installed on 78 substation transformer banks. Smart Grid Solutions Strengthen Electric Reliability and Customer Services in Florida With 4.6 million customers, nearly 70,000 miles of power lines and 16 power plants, Florida Power and Light Company (FPL) is one of the nation's largest electric utilities. FPL says maintaining reliable service while keeping rates affordable is "Job One." While pursuing its mission, FPL is implementing "Energy Smart Florida," which is the largest and one of the most comprehensive of the U.S. Department of

Note: This page contains sample records for the topic "reliable off-grid power" 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

Review of nuclear power plant offsite power source reliability and related recommended changes to the NRC rules and regulations  

SciTech Connect

The NRC has stated its concern about the reliability of the offsite power system as the preferred emergency source and about the possible damage to a pressurized water reactor (PWR) that could result from a rapid decay of power grid frequency. ORNL contracted with NRC to provide technical assistance to establish criteria that can be used to evaluate the offsite power system for the licensing of a nuclear power plant. The results of many of the studies for this contract are recommendations to assess and control the power grid during operation. This is because most of the NRC regulations pertaining to the offsite power system are related to the design of the power grid, and we believe that additional emphasis on monitoring the power grid operation will improve the reliability of the nuclear plant offsite power supply. 46 refs., 10 figs.

Battle, R.E.; Clark, F.H.; Reddoch, T.W.

1980-05-01T23:59:59.000Z

122

The Application of Power Quality Monitoring Data for Reliability Centered Maintenance  

Science Conference Proceedings (OSTI)

This report addresses some requirements of implementing a reliability-centered maintenance (RCM) based power quality system using an open architecture. It also identifies a knowledge base to develop for processing power quality data for maintenance purposes and provides case studies that show how power quality monitoring data can indicate system anomalies. Finally, the report discusses applying artificial intelligence (AI) in such a system.

2000-12-05T23:59:59.000Z

123

reliable, efficient, ultra-clean Fuel Cell Power Plant Experience  

E-Print Network (OSTI)

Shore Capacity - Low Profile, Easy Siting Connects to existing electricity and fuel infrastructure System Operation · Over 300 Hours of Operation on Load with Water Recovery · Power Output up to 125 k

124

RELIABILITY OF WIND POWER FROM DISPERSED SITES: A PRELIMINARY ASSESSMENT  

E-Print Network (OSTI)

Electric Company, Wind Energy Mission Analysis, COO/2578-C.G. and W.R. Hargraves, Wind Energy Statistics for Largeng Power Supply from Wind Energy Converting Sys t ems, "

Kahn, E.

2011-01-01T23:59:59.000Z

125

Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources  

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

Understanding Bulk Power Reliability: Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources Emily Fisher Lawrence Berkeley National Laboratory esfisher@lbl.gov Joseph H. Eto Lawrence Berkeley National Laboratory jheto@lbl.gov Kristina Hamachi LaCommare Lawrence Berkeley National Laboratory kshamachi@lbl.gov Abstract Bulk power system reliability is of critical importance to the electricity sector. Complete and accurate information on events affecting the bulk power system is essential for assessing trends and efforts to maintain or improve reliability. Yet, current sources of this information were not designed with these uses in mind. They were designed, instead, to support real-time emergency notification to industry and government first-responders. This

126

Utilizing Load Response for Wind and Solar Integration and Power System Reliability  

DOE Green Energy (OSTI)

Responsive load is still the most underutilized reliability resource in North America. This paper examines the characteristics of concern to the power system, the renewables, and to the loads.

Milligan, M.; Kirby, B.

2010-07-01T23:59:59.000Z

127

Electric-Drive Vehicles: A Source of Power and Reliability to...  

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

Electric-Drive Vehicles: A Source of Power and Reliability to the California Electric Grid Speaker(s): Willett M. Kempton Date: April 30, 2001 - 3:00pm Location: Bldg. 90 Seminar...

128

Reliability Improvement Programs in Steam Distribution and Power Generation Systems  

E-Print Network (OSTI)

This paper will present alternatives to costly corrective maintenance repairs of the steam trap and condensate return system, and the paybacks associated with instituting a program of planned and systematic maintenance management of that system. Energy costs can be reduced by 10% and maintenance costs by 20%, while achieving other tangible improvements in the reliability and efficiency of the system. Recent studies have shown that more than 40% of all installed steam traps and 20% of certain types of valves need some form of corrective action. The majority of all high backpressure problems in condensate return systems are due to poor design criteria in expanding or retrofitting existing return systems. By instituting a maintenance management program, a 95% reliability can be gained with two to four annual maintenance cycles. The associated operational problems can be greatly reduced. The maintenance management concept involves: 1) centralized project management; 2) diagnostic and inspection expertise; 3) system troubleshooting; 4) data analysis, reporting and recommendations; 5) maintenance repairs and follow-up; and 6)software and data base management. Several case studies, in which the concept has been successfully applied, will be presented.

Atlas, R. D.

1986-06-01T23:59:59.000Z

129

Integration of renewable energy sources: reliability-constrained power system planning and operations using computational intelligence  

E-Print Network (OSTI)

Renewable sources of energy such as wind turbine generators and solar panels have attracted much attention because they are environmentally friendly, do not consume fossil fuels, and can enhance a nations energy security. As a result, recently more significant amounts of renewable energy are being integrated into conventional power grids. The research reported in this dissertation primarily investigates the reliability-constrained planning and operations of electric power systems including renewable sources of energy by accounting for uncertainty. The major sources of uncertainty in these systems include equipment failures and stochastic variations in time-dependent power sources. Different energy sources have different characteristics in terms of cost, power dispatchability, and environmental impact. For instance, the intermittency of some renewable energy sources may compromise the system reliability when they are integrated into the traditional power grids. Thus, multiple issues should be considered in grid interconnection, including system cost, reliability, and pollutant emissions. Furthermore, due to the high complexity and high nonlinearity of such non-traditional power systems with multiple energy sources, computational intelligence based optimization methods are used to resolve several important and challenging problems in their operations and planning. Meanwhile, probabilistic methods are used for reliability evaluation in these reliability-constrained planning and design. The major problems studied in the dissertation include reliability evaluation of power systems with time-dependent energy sources, multi-objective design of hybrid generation systems, risk and cost tradeoff in economic dispatch with wind power penetration, optimal placement of distributed generators and protective devices in power distribution systems, and reliability-based estimation of wind power capacity credit. These case studies have demonstrated the viability and effectiveness of computational intelligence based methods in dealing with a set of important problems in this research arena.

Wang, Lingfeng

2008-12-01T23:59:59.000Z

130

T&D System Design and Construction for Enhanced Reliability and Power Quality  

Science Conference Proceedings (OSTI)

Transmission and Distribution (TD) design and construction standards and practices can impact the quality of power supplied to end users. Standards engineers lack clear guidelines on how to optimize the power quality performance of electrical systems. Traditional design and construction standards/practices are based on optimizing cost with system reliability. However, in some cases, improvement in service reliability could come at the expense of service quality. This project combines prior research from ...

2006-03-16T23:59:59.000Z

131

(Safety and reliability of nuclear power plant technology)  

SciTech Connect

The traveler attended the 16th MPA Seminar on the Safety and Reliability of Plant Technology with Special Emphasis on Nuclear Technology. The objective of the trip was to gather information and data that could prove useful to the US Nuclear Regulatory Commission (USNRC) sponsored Heavy-Section Steel Irradiation (HSSI) and Heavy-Section Steel Technology (HSST) Programs and to present a paper entitled, Effects of Irradiation on Initiation and Crack-Arrest Toughness of Two High-Copper Welds and on Stainless Steel Cladding. This paper summarizes results from the 5th, 6th, and 7th Irradiation Series of experiments performed within the HSSI Program by the Metals and Ceramics Division at Oak Ridge National Laboratory (ORNL).

Dickson, T.L.

1990-10-22T23:59:59.000Z

132

Guidelines and Specifications for High-Reliability Fossil Power Plants  

Science Conference Proceedings (OSTI)

The steel alloy known as Grade 91 has achieved broad acceptance within the modern power industry for use in fabricating a variety of critical pressure part components, including tubing, piping, and headers. As is true for all of the creep-strength-enhanced ferritic (CSEF) steels, designers favor Grade 91 because, within a specific temperature range and when properly processed, it provides superior elevated temperature strength at substantially lower cost than the austenitic stainless steels, while mainta...

2011-11-09T23:59:59.000Z

133

Distribution System Reliability Practices: Noteworthy Practices at American Electric Power  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute's (EPRI's) members represent more than 90% of the electricity generated and delivered in the United States, and international participation extends to 40 countries. Participation by such a large cross section of the utility industry provides EPRI with a unique ability to reach out to and learn from a wide variety of utility companies. This level of exposure is a distinct advantage for this type of research, in which EPRI is documenting and sharing noteworthy practice...

2011-11-09T23:59:59.000Z

134

Pilot evaluation of electricity-reliability and power-quality monitoring in California's Silicon Valley with the I-Grid(R) system  

E-Print Network (OSTI)

in the Economic Value of Electricity Reliability to the U.S.Pilot Evaluation of Electricity-Reliability & PQ Monitoringto Power Quality and Electricity Reliability Monitoring

Eto, Joseph; Divan, Deepak; Brumsickle, William

2004-01-01T23:59:59.000Z

135

Capacity Planning, Power Quality, Reliability, and Availability for Internet Facilities: Volume 2: Technical Considerations  

Science Conference Proceedings (OSTI)

This two-volume report discusses the strategic and technical issues related to energy capacity planning, power quality, reliability, and availability for Internet facilities. Volume One describes the digital economy and introduces the power issues facing suppliers and consumers in e-commerce market segments. Volume Two addresses facility characteristics, planning stage questions, defining research and development requirements, and applications issues for Internet facilities.

2000-12-13T23:59:59.000Z

136

Application of EPRI's Transmission Reliability Evaluation for Large-Scale Systems (TRELSS) Program to Bonneville Power Administration System  

Science Conference Proceedings (OSTI)

Delivering power at the lowest cost while maintaining an acceptable level of reliability requires careful transmission planning. EPRI's Transmission Reliability Evaluation for Large-Scale Systems (TRELSS) can be used to analyze and quantify the reliability of bulk power systems to help determine the need for new transmission facilities. This report presents the results of reliability analyses for Bonneville Power Administration (BPA) using the TRELSS program.

1997-11-11T23:59:59.000Z

137

The Impact of Protection System Failures on Power System Reliability Evaluation  

E-Print Network (OSTI)

The reliability of protection systems has emerged as an important topic because protection failures have critical influence on the reliability of power systems. The goal of this research is to develop novel approaches for modeling and analysis of the impact of protection system failures on power system reliability. It is shown that repairable and non-repairable assumptions make a remarkable difference in reliability modeling. A typical all-digital protection system architecture is modeled and numerically analyzed. If an all-digital protection system is indeed repairable but is modeled in a non-repairable manner for analysis, the calculated values of reliability indices could be grossly pessimistic. The smart grid is emerging with the penetration of information-age technologies and the development of the Special Protection System (SPS) will be greatly influenced. A conceptual all-digital SPS architecture is proposed for the future smart grid. Calculation of important reliability indices by the network reduction method and the Markov modeling method is illustrated in detail. Two different Markov models are proposed for reliability evaluation of the 2-out-of-3 voting gates structure in a generation rejection scheme. If the model with consideration of both detectable and undetectable logic gate failures is used as a benchmark, the simple model which only considers detectable failures will significantly overestimate the reliability of the 2-out-of-3 voting gates structure. The two types of protection failures, undesired-tripping mode and fail-to-operate mode are discussed. A complete Markov model for current-carrying components is established and its simplified form is then derived. The simplified model can appropriately describe the overall reliability situation of individual components under the circumstances of complex interactions between components due to protection failures. New concepts of the self-down state and the induced-down state are introduced and utilized to build up the composite unit model. Finally, a two-layer Markov model for power systems with protection failures is proposed. It can quantify the impact of protection failures on power system reliability. Using the developed methodology, we can see that the assumption of perfectly reliable protection can introduce errors in reliability evaluation of power systems.

Jiang, Kai

2012-12-01T23:59:59.000Z

138

Independent transmission system operators and their role in maintaining reliability in a restructured electric power industry  

Science Conference Proceedings (OSTI)

This report summarizes the current status of proposals to form Independent System Operators (ISOs) to operate high-voltage transmission systems in the United States and reviews their potential role in maintaining bulk power system reliability. As background information, the likely new industry structure, nature of deregulated markets, and institutional framework for bulk power system reliability are reviewed. The report identifies issues related to the formation of ISOs and their roles in markets and in reliability, and describes potential policy directions for encouraging the formation of effective ISOs and ensuring bulk system reliability. Two appendices are provided, which address: (1) system operation arrangements in other countries, and (2) summaries of regional U.S. ISO proposals.

NONE

1998-01-01T23:59:59.000Z

139

ESS 2012 Peer Review - Experimental Investigation of Silicon Carbide Power Device Reliability - Robert Kaplar, SNL  

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

Experimental Investigation Experimental Investigation of Silicon Carbide Power Device Reliability September 27, 2012 Robert Kaplar, David Hughart, Sandeepan DasGupta, Matthew Marinella, Mark Smith, and Stanley Atcitty The authors gratefully acknowledge the support of Dr. Imre Gyuk of the United States Department of Energy, Office of Electricity Delivery and Energy Reliability, Energy Storage Program * Wide-bandgap semiconductors have material properties that make them theoretically superior to Silicon for power device applications * Lower power loss and reduced cooling requirements would increase the efficiency and reduce the size and complexity of power conversion systems linking energy storage to the grid, thus reducing overall system cost * However, wide-bandgap materials and devices are far less mature

140

Framework for Stochastic Reliability of Bulk Power System with Stability Constraints  

Science Conference Proceedings (OSTI)

The power industry is saddled with the dual responsibilities of generating power at affordable cost and supplying it to the consumers at an affordable and acceptable price. The availability of the supply and the security thereof are equally of paramount importance to utilities. The research is aimed at seeking elegant methods for conducting the concurrent stability/ reliability assessment, selection of remedial actions (RA), optimization and cost benefit analysis with benefit allocation in multi-area sys...

2004-02-27T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Indices for Characterizing Quality and Reliability of the Power Supply System  

Science Conference Proceedings (OSTI)

In recent years, as many electric utilities wrestle with deregulation issues, their customers are becoming even more concerned about the possible decline in power quality due to cost-cutting measures. Regulators throughout the world are trying to determine methods for assuring that the reliability and quality of the supply system do not deteriorate as deregulation of the industry takes place. Minimum standards for power quality have been established in Europe, EN 50160, but these do not include disturban...

2004-09-09T23:59:59.000Z

142

Reliability-economics analysis models for photovoltaic power systems. Volume 1  

DOE Green Energy (OSTI)

This report describes the development of modeling techniques to characterize the reliability, availability, and maintenance costs of photovoltaic power systems. The developed models can be used by designers of PV systems in making design decisions and trade-offs to minimize life-cycle energy costs.

Stember, L.H.; Huss, W.R.; Bridgman, M.S.

1982-11-01T23:59:59.000Z

143

Guide for Predicting Long-Term Reliability of Nuclear Power Plant Systems, Structures, and Components  

Science Conference Proceedings (OSTI)

This report provides guidelines for predicting long-term reliability of nuclear power plant systems, structures, and components. The methods described will allow life cycle management planners to make improved estimates of lost generation and revenues, which play an important role in the choice of the economically optimum long-term maintenance plan for systems and components.

2002-12-05T23:59:59.000Z

144

Evaluation of conventional electric power generating industry quality assurance and reliability practices  

DOE Green Energy (OSTI)

The techniques and practices utilized in an allied industry (electric power generation) that might serve as a baseline for formulating Quality Assurance and Reliability (QA and R) procedures for photovoltaic solar energy systems were studied. The study results provide direct near-term input for establishing validation methods as part of the SERI performance criteria and test standards development task.

Anderson, R.T.; Lauffenburger, H.A.

1981-03-01T23:59:59.000Z

145

Record of Categorical Exclusion (CX) Determination: Office of Electricity Delivery and Energy Reliability (OE): EA-384 NRG Power Marketing LLC  

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

Record of Categorical Exclusion (CX) Determination, Office of Electricity Delivery and Energy Reliability (OE): Application from NRG Power Marketing LLC to export electric energy to Mexico.

146

Reliability of the Solar One plant during the power production phase.  

DOE Green Energy (OSTI)

Solar One is the world's largest central receiver power plant. During the last 4 years the plant availability was 80%, 83%, and 96%, respectively, during hours of sunshine. This reliability is considered to be excellent considering the plant is a first-of-a-kind facility and because it has been subjected to daily cyclic service. In this paper we present the frequencies and causes of the plant outages that occurred. The ten most important causes comprised 72% of the total outage time. Qualitative insights related to the cause and mitigation of these ten are provided. The information presented in this paper will be useful to studies aimed at improving the reliability of future solar central receiver power plants. It is also useful to members of the utility industry who are considering investing in this technology or are considering cyclic operation of conventional power plants. 4 refs., 3 figs.

Kolb, Gregory J.; Lopez, Charles W.

1989-01-01T23:59:59.000Z

147

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

to Charge a 1200 mAh Battery Cost per LED Lamp Charge (Ksh/battery powered LED lamps introduced to the businesses and the costbattery charging services, while solar charging did not involve any ongoing costs.

Radecsky, Kristen

2009-01-01T23:59:59.000Z

148

Reliability evaluation of electric power system including wind power and energy storage .  

E-Print Network (OSTI)

??Global environmental concerns associated with conventional energy generation have led to the rapid growth of wind energy applications in electric power systems. Growing demand for (more)

Hu, Po

2009-01-01T23:59:59.000Z

149

Reliability-economics analysis models for photovoltaic power systems. Volume 2. [SOLREL  

DOE Green Energy (OSTI)

This report describes the development of modeling techniques to characterize the reliability, availability, and maintenance costs of photovoltaic power systems. The developed models can be used by designers of PV systems in making design decisions and trade-offs to minimize life-cycle energy costs. Three actual intermediate PV system designs were modeled as examples. The input data estimates used and the results of the analyses are presented.

Stember, L.H.; Huss, W.R.; Bridgman, M.S.

1982-11-01T23:59:59.000Z

150

A Reliability Improvement Program Planning Report for the SNAP 10A Space Nuclear Power Unit  

SciTech Connect

The estimated achieved reliability of SNAP 10A space nuclear power units will be relatively low at the timeof the first SNAPSHOT flight test in April 1963 and the existing R&D program does not provide a significant reliabiity growth thereafter. The total costs of an 8-satellite network using SNAP 10A units over a 5-year period has been approximated for the case where the total cost of a single satellite launched is 8 million dollars.

Coombs, M.G.; Smith C.K.; Wilson, L.A.

1961-03-14T23:59:59.000Z

151

Natural Circulation in Water Cooled Nuclear Power Plants Phenomena, models, and methodology for system reliability assessments  

Science Conference Proceedings (OSTI)

In recent years it has been recognized that the application of passive safety systems (i.e., those whose operation takes advantage of natural forces such as convection and gravity), can contribute to simplification and potentially to improved economics of new nuclear power plant designs. In 1991 the IAEA Conference on ''The Safety of Nuclear Power: Strategy for the Future'' noted that for new plants the use of passive safety features is a desirable method of achieving simplification and increasing the reliability of the performance of essential safety functions, and should be used wherever appropriate''.

Jose Reyes

2005-02-14T23:59:59.000Z

152

Gas Market Transition: Buildup of Power Sector Demand: Report Series on Natural Gas and Power Reliability  

Science Conference Proceedings (OSTI)

Just how fast is natural gas demand for power generation growing in response to the many new gas-fired units being built? This simple question has a far from simple answer, due to confusing streams of data, the interplay between new efficient gas combined cycle units and existing capacity, and the surprisingly low overall levels of capacity utilization observed among the new units. This report dissects each component of gas use in the power sector and provides a novel, integrated view of near term trends...

2003-03-17T23:59:59.000Z

153

Living off-grid in an arid environment without a well : can residential and commercial/industrial water harvesting help solve water supply problems?  

Science Conference Proceedings (OSTI)

Our family of three lives comfortably off-grid without a well in an arid region ({approx}9 in/yr, average). This year we expect to achieve water sustainability with harvested or grey water supporting all of our needs (including a garden and trees), except drinking water (about 7 gallons/week). We discuss our implementation and the implication that for an investment of a few thousand dollars, many single family homes could supply a large portion of their own water needs, significantly reducing municipal water demand. Generally, harvested water is very low in minerals and pollutants, but may need treatment for microbes in order to be potable. This may be addressed via filters, UV light irradiation or through chemical treatment (bleach). Looking further into the possibility of commercial water harvesting from malls, big box stores and factories, we ask whether water harvesting could supply a significant portion of potable water by looking at two cities with water supply problems. We look at the implications of separate municipal water lines for potable and clean non-potable uses. Implications on changes to future building codes are explored.

Axness, Carl L.; Ferrando, Ana

2010-08-01T23:59:59.000Z

154

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

SciTech Connect

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

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

2012-01-01T23:59:59.000Z

155

The NUCLARR databank: Human reliability and hardware failure data for the nuclear power industry  

Science Conference Proceedings (OSTI)

Under the sponsorship of the US Nuclear Regulatory Commission (NRC), the Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR) was developed to provide human reliability and hardware failure data to analysts in the nuclear power industry. This IBM-compatible databank is contained on a set of floppy diskettes which include data files and a menu-driven system for locating, reviewing, sorting, and retrieving the data. NUCLARR contains over 2500 individual data records, drawn from more, than 60 sources. The system is upgraded annually, to include additional human error and hardware component failure data and programming enhancements (i.e., increased user-friendliness). NUCLARR is available from the NRC through project staff at the INEL.

Reece, W.J.

1993-05-01T23:59:59.000Z

156

Dynamic reliability using entry-time approach for maintenance of nuclear power plants  

E-Print Network (OSTI)

Entry-time processes are finite-state continuous-time jump processes with transition rates depending only on the two states involved in transition, the calendar time, and the most recent arrival time, which is termed as entry-time. The entry-time processes have the potential to provide a significantly greater range of applicability and flexibility than traditional reliability tools for case studies related to equipment and components in nuclear power plants. In this dissertation, the finite difference approximation of the integrodifferential Chapman-Kolmogorov equations for the entry-time processes was developed, and then it was verified by application to some hypothetical examples that are solved by alternative means, either (semi-)analytically or via simulation. To demonstrate the ability of entry-time model to applications in nuclear power plants for a RIAM based scenario, the entry-time approach is applied to the maintenance of main generators in nuclear power using the data from INPO-EPIX database. In this application, both reliability and financial performances acquired using the entry-time approaches corresponding to different maintenance policies are presented and discussed to help make maintenance decisions for the plant management. The ability of the EPIX database to provide time-dependent failure rates is demonstrated and the techniques for extraction of failure rates from the database for main generators are also discussed.

Wang, Shuwen

2008-05-01T23:59:59.000Z

157

Policy Issues for Retail Beamed Power Transmission  

E-Print Network (OSTI)

it possible to deliver electric power to off-grid locations using millimeter-wave beams and compact, efficient of very large utility-scale power plants, serving given areas in a hub-and-spoke arrangement. GridPolicy Issues for Retail Beamed Power Transmission Girish Chowdhary, Rajeev Gadre, Narayanan

158

IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 2, JUNE 2013 1087 Reliability Modeling and Evaluation of Power  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON SMART GRID, VOL. 4, NO. 2, JUNE 2013 1087 Reliability Modeling and Evaluation, and Mirrasoul J. Mousavi, Senior Member, IEEE Abstract--Smart grid technologies leveraging advancements of smart grid monitoring and proposes a mathemat- ical model to assess its impact on power grid reliability

Fu, Yong

159

Reliable algorithms for power system analysis in the presence of data uncertainties  

SciTech Connect

A robust and reliable power flow analysis represents an essential requirement for many power systems applications as far as network optimization, voltage control, state estimation, and service restoration are concerned. The most common power flow approach, referred to here as a deterministic power flow (PLF), requires precise or 'crisp' values chosen by the analyst for each input variable. The solution provides precise network voltages and flows through each line. The specified values rest upon assumptions about the operating condition derived from historical measurements or predictions about future conditions and thus, cannot be considered accurate. Even in the case where the inputs are based on measurements, inaccuracies arise from time-skew problems, three-phase unbalance, static modeling approximations of dynamic components (e.g., transformer tap changers), variations in line parameters, and so on. The advent of deregulation and competitive power markets will only exacerbate this problem as well-known generation patterns change, loading becomes less predictable and the transmission paths grow more diverse. Conventional methodologies proposed in literature address tolerance analysis of power flow solution by means of detailed probabilistic methods, accounting for the variability and stochastic nature of the input data, and sampling based approaches. In particular uncertainty propagation using sampling based methods, such as the Monte Carlo, requires several model runs that sample various combinations of input values. Since the number of model runs can sometimes be very large, the required computer resources can sometimes be prohibitively expensive resulting in substantial computational demands. As far as probabilistic methods are concerned, they represent a useful tool, especially for planning studies, but, as evidenced by the many discussions reported in literature, they could reveal some shortcomings principally arising from: (1) the non-normal distribution and the statistical dependence of the input data; and (2) the difficulty arising in accurately identifying probability distributions for some input data, such as the power generated by wind or photovoltaic generators. All these could result in time consuming computations with several limitations in practical applications especially in power flow analysis of complex power networks. In order to try and overcome some of these limitations, obtaining thereby comprehensive power flow solution tolerance analysis at adequate computational costs, self validated computation could play a crucial role. Armed with such a vision, this chapter will analyze two advanced techniques for power flow analysis in the presence of data uncertainty namely the boundary power flow and the affine arithmetic power flow.

Dimitrovski, Aleksandar D [ORNL; Tomsovic, Kevin [University of Tennessee, Knoxville (UTK); Vaccaro, Alfredo [University of Sannio

2011-01-01T23:59:59.000Z

160

Electric Power Infrastructure Reliability and Security (EPIRS) Reseach and Development Initiative  

DOE Green Energy (OSTI)

Power systems have become increasingly complex and face unprecedented challenges posed by population growth, climate change, national security issues, foreign energy dependence and an aging power infrastructure. Increased demand combined with increased economic and environmental constraints is forcing state, regional and national power grids to expand supply without the large safety and stability margins in generation and transmission capacity that have been the rule in the past. Deregulation, distributed generation, natural and man-made catastrophes and other causes serve to further challenge and complicate management of the electric power grid. To meet the challenges of the 21st century while also maintaining system reliability, the electric power grid must effectively integrate new and advanced technologies both in the actual equipment for energy conversion, transfer and use, and in the command, control, and communication systems by which effective and efficient operation of the system is orchestrated - in essence, the 'smart grid'. This evolution calls for advances in development, integration, analysis, and deployment approaches that ultimately seek to take into account, every step of the way, the dynamic behavior of the system, capturing critical effects due to interdependencies and interaction. This approach is necessary to better mitigate the risk of blackouts and other disruptions and to improve the flexibility and capacity of the grid. Building on prior Navy and Department of Energy investments in infrastructure and resources for electric power systems research, testing, modeling, and simulation at the Florida State University (FSU) Center for Advanced Power Systems (CAPS), this project has continued an initiative aimed at assuring reliable and secure grid operation through a more complete understanding and characterization of some of the key technologies that will be important in a modern electric system, while also fulfilling an education and outreach mission to provide future energy workforce talent and support the electric system stakeholder community. Building upon and extending portions of that research effort, this project has been focused in the following areas: (1) Building high-fidelity integrated power and controls hardware-in-the-loop research and development testbed capabilities (Figure 1). (2) Distributed Energy Resources Integration - (a) Testing Requirements and Methods for Fault Current Limiters, (b) Contributions to the Development of IEEE 1547.7, (c) Analysis of a STATCOM Application for Wind Resource Integration, (d) Development of a Grid-Interactive Inverter with Energy Storage Elements, (e) Simulation-Assisted Advancement of Microgrid Understanding and Applications; (3) Availability of High-Fidelity Dynamic Simulation Tools for Grid Disturbance Investigations; (4) HTS Material Characterization - (a) AC Loss Studies on High Temperature Superconductors, (b) Local Identification of Current-Limiting Mechanisms in Coated Conductors; (5) Cryogenic Dielectric Research; and (6) Workshops, education, and outreach.

Rick Meeker; L. Baldwin; Steinar Dale; Alexander Domijan; Davild Larbalestier; Hui Li; Peter McLaren; Sastry Pamidi; Horatio Rodrigo; Michael Steurer

2010-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Reliable, Efficient and Cost-Effective Electric Power Converter for Small Wind Turbines Based on AC-link Technology  

DOE Green Energy (OSTI)

Grid-tied inverter power electronics have been an Achilles heel of the small wind industry, providing opportunity for new technologies to provide lower costs, greater efficiency, and improved reliability. The small wind turbine market is also moving towards the 50-100kW size range. The unique AC-link power conversion technology provides efficiency, reliability, and power quality advantages over existing technologies, and Princeton Power will adapt prototype designs used for industrial asynchronous motor control to a 50kW small wind turbine design.

Darren Hammell; Mark Holveck; DOE Project Officer - Keith Bennett

2006-08-01T23:59:59.000Z

162

Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources  

E-Print Network (OSTI)

reporting requirements for the DOE and NERC reliabilityDOE must also be submitted to NERC, under the NERC Disturbance Reporting reliability requirement,

Fisher, Emily

2012-01-01T23:59:59.000Z

163

15 KJ FLASH LAMP, POWER CONDITIONING UNIT DESIGNED FOR SAFTY, RELIABILITY & MANUFACTURABILITY*  

SciTech Connect

A 15kJoule, Flash Lamp Power Conditioning Unit has been successfully designed, developed, and deployed in the National Ignition Facility (NIF) Preamplifier Modules (PAM). The primary design philosophy of this power conditioning unit (PCU) is safety, reliability, and manufacturability. Cost reduction over commercially equivalent systems was also achieved through an easily manufactured packaging design optimized to meet NIF requirements. While still maintaining low cost, the PCU design includes a robust control system, fault diagnostic system, and safety features. The pulsed power design includes 6 PFN modules, each including a dual series injection trigger transformer, that drive a total of 12 flash lamp loads. The lamps are individually triggered via a 20kV pulse produced by a 1kV, MCT switched capacitive discharge unit on the primary side of the trigger transformer. The remote control interface includes an embedded controller that captures flash lamp current wave forms and fault status for each shot. The embedded controller provides the flexibility of remotely adjusting both the main drive voltage from 1.6 to 2.5 kV and the trigger voltage from 0 to 20 kV.

James, G; Merritt, B; Dreifuerst, G; Strickland, S

2007-08-07T23:59:59.000Z

164

Kettlectric and myGen : portable, thermoelectric-based power generation systems for off-grid home use and the village entrepreneur  

E-Print Network (OSTI)

There are 1.6 billion people across the globe who still live without access to electricity. For this group, the modern electrical framework providing fundamental services for health, food and water processing and storage, ...

Kozlowski, Michael C. (Michael Charles)

2010-01-01T23:59:59.000Z

165

Photovoltaic-Reliability R&D Toward a Solar-Powered World: Preprint  

DOE Green Energy (OSTI)

Paper about the importance of continued progress toward low-cost, high-reliability, and high-performance PV systems. High reliability is an essential element in achieving low-cost solar electricity.

Kurtz, S.; Granata, J.; Quintana, M.

2009-08-01T23:59:59.000Z

166

Operator Reliability Experiments Using Power Plant Simulators, Volumes 1-3: Volumes 1-3  

Science Conference Proceedings (OSTI)

Operator reliability experiment (ORE) data, collected on actual operating crews from three PWR and three BWR simulators, enhances understanding of their performance during emergency events. These data form the basis for quantifying human reliability in probabilistic risk assessment (PRA).

1980-08-01T23:59:59.000Z

167

Photovoltaic-Reliability R&D Toward a Solar-Powered World (Presentation)  

DOE Green Energy (OSTI)

Presentation about the importance of continued progress toward low-cost, high-reliability, and high-performance PV systems. High reliability is an essential element in achieving low-cost solar electricity.

Kurtz, S.; Granata, J.

2009-08-01T23:59:59.000Z

168

Gas Storage for Power Generation -- Critical New Bridge Between Power Demand and Gas Supply: Report Series on Natural Gas and Power Reliability  

Science Conference Proceedings (OSTI)

Natural gas storage is a "sleeper" issue for the power industry that will demand a great deal of attention very soon as the building boom of gas-fired capacity draws to a close and these plants begin to operate. While an entire industry has emerged in recent years to develop high-deliverability gas storage, the new facilities are likely the tip of an iceberg. Pipelines will be taxed to meet fluctuating requirements of new units, and companies will turn to gas storage for reliability at an affordable cost...

2002-11-11T23:59:59.000Z

169

Case study of offshore wind farm integration to offshore oil and gas platforms as an isolated system - System Topologies, Steady State and Dynamic Aspects.  

E-Print Network (OSTI)

?? The objective of this thesis work has been to investigate the electric system stability, reliability and power security of an ?off-grid? isolated network system (more)

Hadiya, Maheshkumar

2011-01-01T23:59:59.000Z

170

Economics and performance of PV hybrid power systems: Three case studies  

DOE Green Energy (OSTI)

The Photovoltaic Systems Assistance Center (PVSAC) of Sandia National Laboratories (SNL) has been supporting the development and implementation of off-grid PV hybrid power systems for many years. Technical support has included: refining hardware; understanding system design techniques; obtaining operation and maintenance data; studying use of energy produced. As part of the program, the PVSAC has provided technical expertise on hybrid systems to many federal agencies including the National Park Service, the Forest Service, the Bureau of Land Management, and the Department of Defense. The goal of these partnerships has been to ensure that reliable and safe PV hybrid systems are specified and procured. At present, a critical review of performance and costs of several representative PV hybrid systems is underway. This paper presents a summary of the performance and economical analyses conducted on three PV hybrid systems.

Rosenthal, A.L.; Durand, S.J. [Southwest Technology Development Inst., Las Cruces, NM (United States); Thomas, M.G.; Post, H.N. [Sandia National Labs., Albuquerque, NM (United States)

1998-07-01T23:59:59.000Z

171

Thermal Stress and Reliability for Advanced Power Electronics and Electric Machines (Presentation)  

DOE Green Energy (OSTI)

This presentation gives an overview of NREL's Thermal Stress and Reliability Project work from October 2007 to March 2009 with an emphasis on activity during 2008/2009.

O'Keefe, M. P.

2009-05-01T23:59:59.000Z

172

Efficient and Reliable Reactive Power Supply and Consumption … Insights from an Integrated Program of Engineering and Economic Research  

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

82 82 Efficient and Reliable Reactive Power Supply and Consumption - Insights from an Integrated Program of Engineering and Economic Research Robert J. Thomas, Timothy D. Mount, Richard Schuler, William Schulze, Ray Zimmerman, Fernando Alvarado, Bernard C. Lesieutre, Philip N. Overholt, and Joseph H. Eto Preprint version of paper Electricity Journal Energy Analysis Department Ernest Orlando Lawrence Berkeley National Laboratory 1 Cyclotron Road, MS 90R4000 Berkeley CA 94720-8136 Environmental Energy Technologies Division January 2008 http://eetd.lbl.gov/ea/EMS/EMS_pubs.html The work described in this report was coordinated by the Consortium for Electric Reliability, Technology Solutions and was funded under the Office of Electricity

173

North American Electric Reliability Corporation (NERC): Reliability  

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

Corporation (NERC): Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid. NERC develops and enforces Reliability Standards; assesses adequacy annually via a ten-year forcast and winter and summer forecasts; monitors the bulk power systems; and educates, trains, and certifies industry personnel. North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid More Documents & Publications Re: DOE Request for Information - Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to

174

Reliability of the Solar One plant during the power production phase: August 1, 1984--July 31, 1987  

DOE Green Energy (OSTI)

The power production phase at Solar One spanned three years from August 1, 1984 through July 31, 1987. In that period the plant achieved an average availability, during hours of sunshine, of 81.7%. This report presents the frequencies and causes of the plant outages that occurred. The eleven most important causes composed 75% of the total outage time. Qualitative insights related to the origin and mitigation of these causes are provided. Also presented are insights and statistics regarding the reliability of the heliostat field. The quantitative and qualitative information presented in this report will be useful to studies aimed at improving the reliability of future solar central receiver power plants. 20 refs., 11 figs., 3 tabs.

Kolb, G.J.; Lopez, C.W.

1988-10-01T23:59:59.000Z

175

Feasibility study: Application of RCM techniques for substation maintenance at the Bonneville Power Administration. [Reliability Centered Maintenance (RCM)  

Science Conference Proceedings (OSTI)

This feasibility study examines reliability centered maintenance (RCM) as it applies to Bonneville Power Administrations (BPA) substation maintenance program. Reliability techniques are examined in evaluated. Existing BPA equipment maintenance procedures are documented. Equipment failure history is considered. Economic impacts are estimated. Various equipment instrumentation methods are reviewed. Based on this analysis a prototype system is proposed. The prototype will be implemented in two phases. Phase 1 is to be completed in 1992, it includes instrumenting one power transformer and one oil circuit breaker. Software development will focus on displaying data. Phase 2 is to be completed the following year. The remaining transformers and breakers will be instrumented during the second phase. Software development will focus on predictive maintenance techniques and maintenance decision support.

Purucker, S.L.; Tonn, B.E.; Goeltz, R.T.; James, R.D.; Kercel, S.; Rizy, D.T.; Simpson, M.L.; Van Dyke, J.W.

1992-05-28T23:59:59.000Z

176

EPRI Power Switching Safety and Reliability Project: Summaries of Published Reports and Listing of Conference Presentations 1996--2011  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) Switching Safety and Reliability (SS&R) Project was initiated in 1996. As of December of 2011, this project had published 46 products, including software and a training DVD, covering seven broad subject areas: Studies of the switching process Studies of tools and technological aids used in the planning and execution of switching Studies of switching errors Incident analysis and investigation Studies of management methods and processes Training and operator qua...

2012-07-17T23:59:59.000Z

177

EPRI Power Switching Safety and Reliability Project: Summaries of Published Reports and Listing of Conference Presentations 19962012  

Science Conference Proceedings (OSTI)

This report presents brief descriptions of the publications of the Electric Power Research Institute (EPRI) Switching Safety and Reliability (SS&R) Project and of the presentations at the annual EPRI SS&R Conferences from 1996 (the year of the projects inception) through 2012.The purpose of the SS&R Project, started in 1996, was originally to analyze switching errors and related incidents and to determine effective ways of limiting their occurrence. At the 1997 EPRI ...

2013-07-25T23:59:59.000Z

178

POWER PLANT RELIABILITY-AVAILABILITY AND STATE REGULATION. VOLUME 7 OF THE FINAL REPORT ON HEALTH AND SAFETY IMPACTS OF NUCLEAR, GEOTHERMAL, AND FOSSIL-FUEL ELECTRIC GENERATION IN CALIFORNIA  

E-Print Network (OSTI)

Power Plant Reliability-Availability and State Regulation,"Report on Equipment Availability: Fossil and NuclearBasic Definitions* Availability: Reliability: Base Loading:

Nero, A.V.

2010-01-01T23:59:59.000Z

179

Analyzing the effects of component reliability on naval Integrated Power System quality of service  

E-Print Network (OSTI)

The Integrated Power System (IPS) is a key enabling technology for future naval vessels and their advanced weapon systems. While conventional warship designs utilize separate power systems for propulsion and shipboard ...

Hawbaker, Benjamin F. (Benjamin Forrest)

2008-01-01T23:59:59.000Z

180

Trade-offs in size, quantity and reliability of generalized nuclear power plants: a preliminary assessment  

SciTech Connect

An approximate method is used to estimate the effects of system reliability on optimal nuclear plant size, taking into account also scale factors and manufacturing learning curve slopes. The method is used to estimate the additional effective capability gained by adding units of different sizes to an existing electrical system. The number of additional units proves to be sensitive to forced outrage rate, estimated here from trends in US light-water reactors from 1971 to 1980. The relative cost of added units ranging in size from 200 to 800 MW is determined as a function of the parameters: scale factor and learning curve slope. The results generally corrobate the trends found in an earlier study in which the effect of reliability on required installed capacity was not explicitly considered. Optimal plant size decreases with weaker scale effects and stronger learning curve effects. Reliability considerations further reduce the optimal plant size, but the relative reduction is apparently not as great with steeper learning curves. This is a plausible finding inasmuch as the reduction in numbers of additional units due to reliability considerations will affect cost most where the learning curve is steepest. 9 refs., 4 figs., 3 tabs.

Hill, D.

1985-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

IEEE TRANSACTIONS ON POWER SYSTEMS,VOL. 5, NO. 3, AUGUST 1990 VALUE OF SERVICE RELIABILITY  

E-Print Network (OSTI)

to various service options or investments in reliability to infer customer outage costs; historical data planning framework, and taking advantage of the recent advances in the quantificationof outage costs of dwindling reserves. Information on customer outage costs associatedwith such actions is incorporatedusing

Gross, George

182

Reliable data delivery in large-scale low-power sensor networks  

Science Conference Proceedings (OSTI)

In data collection applications of low-end sensor networks, a major challenge is ensuring reliability without a significant goodput degradation. Short hops over high-quality links minimize per-hop transmissions, but long routes may cause congestion and ... Keywords: Wireless sensor networks, congestion control, load balancing, routing

Daniele Puccinelli; Martin Haenggi

2010-07-01T23:59:59.000Z

183

TVA Tracks Bulk Power Transfers with TagNet to Improve Transmission System Reliability  

Science Conference Proceedings (OSTI)

The bubble diagram is especially useful. In the world of real-time operations, a picture is worth a thousand words. TagNet provides TVA with The ability to identify root causes for real-time system behavior Data for future reliability models for approximation of transfer biases A mechanism to monitor system conditions using a graphical toolset. 8212Armando Rodriguez, TVA.

2006-02-15T23:59:59.000Z

184

A miniaturized mW thermoelectric generator for nw objectives: continuous, autonomous, reliable power for decades.  

DOE Green Energy (OSTI)

We have built and tested a miniaturized, thermoelectric power source that can provide in excess of 450 {micro}W of power in a system size of 4.3cc, for a power density of 107 {micro}W/cc, which is denser than any system of this size previously reported. The system operates on 150mW of thermal input, which for this system was simulated with a resistive heater, but in application would be provided by a 0.4g source of {sup 238}Pu located at the center of the device. Output power from this device, while optimized for efficiency, was not optimized for form of the power output, and so the maximum power was delivered at only 41mV. An upconverter to 2.7V was developed concurrently with the power source to bring the voltage up to a usable level for microelectronics.

Aselage, Terrence Lee; Siegal, Michael P.; Whalen, Scott; Frederick, Scott K.; Apblett, Christopher Alan; Moorman, Matthew Wallace

2006-10-01T23:59:59.000Z

185

Low cost high power GaSB photovoltaic cells  

Science Conference Proceedings (OSTI)

High power density and high capacity factor are important attributes of a thermophotovoltaics (TPV) system and GaSb cells are enabling for TPV systems. A TPV cogeneration unit at an off grid site will compliment solar arrays producing heat and electricity on cloudy days with the solar arrays generating electricity on sunny days. Herein

Lewis M. Fraas; Han X. Huang; Shi-Zhong Ye; She Hui; James Avery; Russell Ballantyne

1997-01-01T23:59:59.000Z

186

Low cost high power GaSb thermophotovoltaic cells  

Science Conference Proceedings (OSTI)

High power density and high capacity factor are important attributes of a TPV system and GaSb cells are enabling for TPV systems. A TPV cogeneration unit at an off grid site will compliment solar arrays producing heat and electricity on cloudy days with the solar arrays generating electricity on sunny days. Herein

Lewis M. Fraas; Han X. Huang; Shi-Zhong Ye; James Avery; Russell Ballantyne

1997-01-01T23:59:59.000Z

187

Reliability implications of price responsive demand : a study of New England's power system  

E-Print Network (OSTI)

With restructuring of the traditional, vertically integrated electricity industry come new opportunities for electricity demand to actively participate in electricity markets. Traditional definitions of power system ...

Whitaker, Andrew C. (Andrew Craig)

2011-01-01T23:59:59.000Z

188

Restoring Faith in the bulk-power system: an early assessment of mandatory reliability standards  

SciTech Connect

The driving force underlying creation of mandatory reliability standards was the prevention of widespread outages, such as those that occurred in 1965, 1977 and 2003. So far, no similar outage has occurred when an entity is in full compliance with the standards, and NERC and FERC have demonstrated that they will actively enforce compliance while aggressively pursuing entities alleged to be non-compliant. (author)

McAllister, Levi; Dawson, Kelly L.

2010-03-15T23:59:59.000Z

189

Streamlined Reliability-Centered Maintenance (SRCM) Program for Fossil-Fired Power Plants  

Science Conference Proceedings (OSTI)

Following EPRI's philosophy to use and expand existing technology if it makes economic sense, the Institute's Plant Maintenance Optimization Target has adopted a reliability-centered maintenance (RCM) process called Streamlined RCM, or SRCM. SRCM provides a utility a cost-effective process to determine the optimum maintenance strategy for plant systems and equipment based on importance to business objectives. SRCM maintains all the basic steps of traditional RCM.

1998-03-25T23:59:59.000Z

190

Evaluating Machine Learning for Improving Power Grid Reliability Leon Wu leon@cs.columbia.edu  

E-Print Network (OSTI)

and intelligent electricity distribution and trans- mission system, i.e., power grid. The smart grid has been as the electrical grid morphs into the "smart grid" will require innovations in how we assess the state of the grid defined as an automated electric power system that monitors and controls grid activities, ensuring the two

Rudin, Cynthia

191

Tracking the Reliability of the U.S. Electric Power System: An Assessment of Publicly Available Information Reported to State Public Utility Commissions  

SciTech Connect

Large blackouts, such as the August 14-15, 2003 blackout in the northeasternUnited States and Canada, focus attention on the importance of reliable electric service. As public and private efforts are undertaken to improve reliability and prevent power interruptions, it is appropriate to assess their effectiveness. Measures of reliability, such as the frequency and duration of power interruptions, have been reported by electric utilities to state public utility commissions for many years. This study examines current state and utility practices for collecting and reporting electricity reliability information and discusses challenges that arise in assessing reliability because of differences among these practices. The study is based primarily on reliability information for 2006 reported by 123 utilities to 37 state public utility commissions.

LaCommare, Kristina H.; Eto, Joseph H.

2008-10-10T23:59:59.000Z

192

A new approach for dynamic reliability and power management of Integrated Systems, such as Systems on Chips (SoCs) and Networks  

E-Print Network (OSTI)

and the appropriate failure rate (e.g. idle state failure rate in Figure 3 is fi, while the power consumption is Pi is finite, we also model transition states. Each of the power states presented in the figure has a different failure rate, as each state represents different level of power consumption. Since system reliability

De Micheli, Giovanni

193

RELIABILITY ANALYSIS OF THE ELECTRICAL POWER DISTRIBUTION SYSTEM TO SELECTED PORTIONS OF THE NUCLEAR HVAC SYSTEM  

Science Conference Proceedings (OSTI)

A design requirement probability of 0.01 or less in a 4-hour period ensures that the nuclear heating, ventilation, and air-conditioning (HVAC) system in the primary confinement areas of the Dry Transfer Facilities (DTFs) and Fuel Handling Facility (FHF) is working during a Category 1 drop event involving commercial spent nuclear fuel (CSNF) assemblies (BSC 2004a , Section 5.1.1.48). This corresponds to an hourly HVAC failure rate of 2.5E-3 per hour or less, which is contributed to by two dominant causes: equipment failure and loss of electrical power. Meeting this minimum threshold ensures that a Category 1 initiating event followed by the failure of HVAC is a Category 2 event sequence. The two causes for the loss of electrical power include the loss of offsite power and the loss of onsite power distribution. Thus, in order to meet the threshold requirement aforementioned, the failure rate of mechanical equipment, loss of offsite power, and loss of onsite power distribution must be less than or equal to 2.5E-3 per hour for the nuclear HVAC system in the primary confinement areas of the DTFs and FHF. The loss of offsite power occurs at a frequency of 1.1E-5 per hour (BSC 2004a, Section 5.1.1.48). The purpose of this analysis is to determine the probability of occurrence of the unavailability of the nuclear HVAC system in the primary confinement areas of the DTFs and FHF due to loss of electrical power. In addition, this analysis provides insights on the contribution to the unavailability of the HVAC system due to equipment failure. The scope of this analysis is limited to finding the frequency of loss of electrical power to the nuclear HVAC system in the primary confinement areas of the DTFs and FHF.

N. Ramirez

2004-12-16T23:59:59.000Z

194

Strategic investment in power generation under uncertainty : Electric Reliability Council of Texas  

E-Print Network (OSTI)

The purpose of this study is to develop a strategy for investment in power generation technologies in the future given the uncertainties in climate policy and fuel prices. First, such studies are commonly conducted using ...

Chiyangwa, Diana Kudakwashe

2010-01-01T23:59:59.000Z

195

Statistical Reliability of Neighboring Range Bin Estimates of Coherent Fractional Contributions to Radar Backscattered Power  

Science Conference Proceedings (OSTI)

It was recently demonstrated that magnitudes of the power-normalized cross-correlation functions of complex amplitudes in neighboring range bins are identical to the fractional contributions made by radar coherent backscatter in the direction of ...

A. R. Jameson

2011-03-01T23:59:59.000Z

196

Sequential Monte Carlo simulation for composite power system reliability analysis with time varying loads  

SciTech Connect

The paper illustrates the development and utilization of an annual chronological load curve for each load bus in a composite generation and transmission system and a sequential Monte Carlo simulation approach for composite system reliability assessment. Antithetic variates as a variance reduction technique has been applied to the simulation model to increase the efficiency of the simulation. An approximate method using a load duration curve of the system load and an enumeration process have been applied to the developed load model and the results are compared in this paper.

Sankarakrishnan, A.; Billinton, R. [Univ. of Saskatchewan, Saskatoon, Saskatchewan (Canada). Power Systems Research Group

1995-08-01T23:59:59.000Z

197

Alternative methods for achieving given power system reliability levels. Final report  

SciTech Connect

This work examines the relative cost-effectiveness of competing electrical generating alternatives in contributing to the overall reliability level of a utility system. Three principal issues raised by Section 209 of the 1978 Public Utility Regulatory Policy Act (PURPA) are considered. They are: When there is a need for additional generating capacity, is it cost-effective to: (1) use small unit sizes rather than fewer large units of similar total megawatt capacity, (2) use intermittent and unconventional generating units in place of some conventional units, (3) use generation in decentral rather than central applications.

Yamayee, Z.A.; Boardman, R.W.; Khan, S.U.; Ma, F.S.

1980-10-01T23:59:59.000Z

198

Abstract--The paper focuses on reliability assessment of power systems with wind power generation. A Monte Carlo based  

E-Print Network (OSTI)

. A Monte Carlo based production cost simulation model is introduced in the paper. The model closely for wind power can be established. Over the years, analytical methods [2]-[4] had been extensively utilized based production cost simulation model had been investigated and developed. The model simulates

McCalley, James D.

199

Nova-Scotia Power's Point Aconi plant overcomes CFB design problems to become rock of reliability  

Science Conference Proceedings (OSTI)

Point Aconi's circulating fluidized-bed boiler experienced erosion, corrosion, and fouling problems from the day it went on-line in 1993. After several frustrating years of unreliable operation, in late 1999, Nova Scotia Power discovered the right combination of engineering and fuel modifications. Today, after a switch to 80% petroleum coke and major boiler modifications, Point Aconi's output exceeds its original nameplate rating. For having the vision and fortitude to plan and execute a multi year, $20 million project to revitalize North America's first in-service utility CFB boiler, Nova Scotia Power's Point Aconi plant is the well-deserved winner of POWER magazine's 2006 Marmaduke Award for excellence in O & M. The award is named for Marmaduke Surfaceblow, the fictional marine engineer/plant troubleshooter par excellence. 10 figs. 1 tab.

Peltier, R.

2006-09-15T23:59:59.000Z

200

Symposium Proceedings: Transformer Reliability: Management of Static Electrification in Power Transformers  

Science Conference Proceedings (OSTI)

Certain mitigation procedures could have prevented most of the known static electrification failures of very large forced-oil-cooled power transformers. This conclusion was confirmed at an EPRI-sponsored symposium where participants shared worldwide research results and field experiences spanning 15 years.

1999-11-11T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Impact of Natural Gas Market Conditions on Fuel Flexibility Needs for Existing and New Power Generation: Report Series on Natural Ga s and Power Reliability  

Science Conference Proceedings (OSTI)

The ongoing surge in new gas-fired capacity is changing the landscape of how natural gas will be used for power generation, leading to some surprising effects. While the new machines bring greater efficiency, the exit of dual-fuel units leads to a loss in fuel flexibility, greater natural gas price volatility, and less reliability of natural gas-fired generation. This report explores these effects systematically, bringing fresh insight on gas use in the electric sector, its market effects, and the ever-c...

2002-01-31T23:59:59.000Z

202

Journey to Flexible, Reliable, Laboratory Platform for Simultaneous Control of Multiple Reactive Power Producing Devices  

SciTech Connect

Herein is discussed the instrumentation and control requirements for achieving the goal of operating multiple Distributed Energy (DE) devices in parallel to regulate local voltage. The process for establishing the flexible laboratory control and data acquisition system that allows for the integration of multiple Distributed Energy (DE) devices in XXXX Laboratory's Distributed Energy - Communications and Controls Laboratory (DECC) is discussed. The DE devices control local distribution system voltage through dynamic reactive power production. Although original efforts were made to control the reactive power (RP) output using information from commercially available meters specifically designed for monitoring and analyzing electric power values, these "intelligent" meters did not provide the flexibility needed. A very flexible and capable real-time monitoring and control system was selected after the evaluation of various methods of data acquisition (DAQ) and control. The purpose of this paper is to describe the DAQ and controls system development. The chosen controller is a commercially available real-time controller from dSPACE. This controller has many excellent features including a very easy programming platform through Simulink and Matlab's Real Time Workshop. The dSPACE system proved to provide both the flexibility and expandability needed to integrate and control the RP producing devices under consideration. The desire was to develop controls with this flexible laboratory instrumentation and controls setup that could be eventually be included in an embedded controller on a DE device. Some experimental results are included that clearly show that some functional control strategies are currently being tested.

Foster, Jason [ORNL; Rizy, D Tom [ORNL; Kueck, John D [ORNL

2007-01-01T23:59:59.000Z

203

Small geothermal electric systems for remote powering  

DOE Green Energy (OSTI)

This report describes conditions and costs at which quite small (100 to 1,000 kilowatt) geothermal systems could be used for off-grid powering at remote locations. This is a first step in a larger process of determining locations and conditions at which markets for such systems could be developed. The results suggest that small geothermal systems offer substantial economic and environmental advantages for powering off-grid towns and villages. Geothermal power is most likely to be economic if the system size is 300 kW or greater, down to reservoir temperatures of 100{degree}C. For system sizes smaller than 300 kW, the economics can be favorable if the reservoir temperature is about 120{degree}C or above. Important markets include sites remote from grids in many developing and developed countries. Estimates of geothermal resources in many developing countries are shown.

Entingh, Daniel J.; Easwaran, Eyob.; McLarty, Lynn

1994-08-08T23:59:59.000Z

204

Efficient and Reliable Reactive Power Supply and Consumption -- Insights from an Integrated Program of Engineering and Economic Research  

E-Print Network (OSTI)

American Electric Reliability Corporation (NERC), recently certified by FERC to be the Electricity Reliability Organization (ERO) created under the Energy Policy

2008-01-01T23:59:59.000Z

205

Outlook for Regional Generation Capacity Balances: Report Series on Natural Gas and Power Reliability  

Science Conference Proceedings (OSTI)

The United States is in the midst of a power plant expansion boom, achieving record additions of natural gas-fired combustion turbines and combined-cycle units over the past two years, with 68,000 MW already added since 1998 and 17,000 MW more slated for completion by the end of 2001. This report provides a region-by-region accounting of how this new capacity -- plus hundreds of megawatts of possible additional natural gas and coal capacity -- may change reserve margins and result in many other impacts a...

2002-01-23T23:59:59.000Z

206

USAEE/IAEE North American Conference, Washington, D.C., July 8-10, 2004 Testing the Reliability of FERC's Wholesale Power Market Platform  

E-Print Network (OSTI)

@iastate.edu Abstract: In April 2003 the U.S. Federal Energy Regulatory Commission proposed the Wholesale Power Market the Reliability of FERC's Wholesale Power Market Platform: An Agent-Based Computational Economics Approach Deddy-1070 Corresponding Author: Leigh Tesfatsion, Professor of Economics and Mathematics Address/Contact Information

Tesfatsion, Leigh

207

Capacity Planning, Power Quality, Reliability, and Availability for Internet Facilities: Volume 1: Digital Society Evolution, Issues Facing Stakeholders, and E-Commerce Market Segments  

Science Conference Proceedings (OSTI)

This two-volume report discusses the strategic and technical issues related to energy capacity planning, power quality, reliability, and availability for Internet facilities. Volume One describes the digital economy and introduces the power issues facing suppliers and consumers in e-commerce market segments. Volume Two addresses facility characteristics, planning stage questions, defining R & D requirements, and applications issues for Internet facilities.

2000-12-14T23:59:59.000Z

208

Human Reliability Analysis in the U.S. Nuclear Power Industry: A Comparison of Atomistic and Holistic Methods  

Science Conference Proceedings (OSTI)

A variety of methods have been developed to generate human error probabilities for use in the US nuclear power industry. When actual operations data are not available, it is necessary for an analyst to estimate these probabilities. Most approaches, including THERP, ASEP, SLIM-MAUD, and SPAR-H, feature an atomistic approach to characterizing and estimating error. The atomistic approach is based on the notion that events and their causes can be decomposed and individually quantified. In contrast, in the holistic approach, such as found in ATHEANA, the analysis centers on the entire event, which is typically quantified as an indivisible whole. The distinction between atomistic and holistic approaches is important in understanding the nature of human reliability analysis quantification and the utility and shortcomings associated with each approach.

Ronald L. Boring; David I. Gertman; Jeffrey C. Joe; Julie L. Marble

2005-09-01T23:59:59.000Z

209

Embodied Energy and Off-Grid Lighting  

E-Print Network (OSTI)

Self-reported Impacts of LED Lighting Technology Comparedto Fuel-based Lighting on Night Market Business Prosperity28, no. 4, pp. 533-546. Lighting Africa (prepared by Dalberg

Alstone, Peter

2012-01-01T23:59:59.000Z

210

Efficient and Reliable Reactive Power Supply and Consumption -- Insights from an Integrated Program of Engineering and Economic Research  

E-Print Network (OSTI)

need to establish real-time prices for reactive power toWe find that nodal real-time prices for reactive power willfind that non-zero real-time prices for reactive power will

2008-01-01T23:59:59.000Z

211

Pilot evaluation of electricity-reliability and power-quality monitoring in California's Silicon Valley with the I-Grid(R) system  

SciTech Connect

Power-quality events are of increasing concern for the economy because today's equipment, particularly computers and automated manufacturing devices, is susceptible to these imperceptible voltage changes. A small variation in voltage can cause this equipment to shut down for long periods, resulting in significant business losses. Tiny variations in power quality are difficult to detect except with expensive monitoring equipment used by trained technicians, so many electricity customers are unaware of the role of power-quality events in equipment malfunctioning. This report describes the findings from a pilot study coordinated through the Silicon Valley Manufacturers Group in California to explore the capabilities of I-Grid(R), a new power-quality monitoring system. This system is designed to improve the accessibility of power-quality in formation and to increase understanding of the growing importance of electricity reliability and power quality to the economy. The study used data collected by I-Grid sensors at seven Silicon Valley firms to investigate the impacts of power quality on individual study participants as well as to explore the capabilities of the I-Grid system to detect events on the larger electricity grid by means of correlation of data from the sensors at the different sites. In addition, study participants were interviewed about the value they place on power quality, and their efforts to address electricity-reliability and power-quality problems. Issues were identified that should be taken into consideration in developing a larger, potentially nationwide, network of power-quality sensors.

Eto, Joseph; Divan, Deepak; Brumsickle, William

2004-02-01T23:59:59.000Z

212

Electricity Reliability  

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

lines and bar graph Electricity Reliability The Consortium for Electric Reliability Technology Solutions (CERTS) conducts research, develops, and disseminates new methods, tools,...

213

Abstract --In this work we present a new approach for dynamic reliability and power management of Integrated  

E-Print Network (OSTI)

. In addition, frequent core transitions between active and low power states can cause a decrease in the overall and the appropriate failure rate (e.g. idle state failure rate in Figure 3 is fi, while the power consumption is Pi is finite, we also model transition states. Each of the power states presented in the figure has a different

Simunic, Tajana

214

Abstract--The reliability and quality of power distribution systems are usually affected by many different distribution faults.  

E-Print Network (OSTI)

the characteristics of tree faults, one of the major fault causes, based on the historical outage data get some general conclusions from the historical outage data, but some factors don't lead to any cover large geographical areas with substantial operation costs, aim at providing reliable, economical

Chow, Mo-Yuen

215

Outlook for Capacity Retirements Following U.S. Boom in New Supplies: Report Series on Natural Gas and Power Reliability  

Science Conference Proceedings (OSTI)

While entrepreneurial exuberance for power plant development has evaporated in the face of market saturation, depressed power prices, and tightening credit, the legacy of the power plant building boom is record additions of gas-fired turbines and combined cycle units between 1998 and 2007. These are contributing to a wave of fossil plant retirements, projected for the first time in this report. The combination of recent cancellations and impending retirements reduces the outlook for overbuilding, yet res...

2003-02-04T23:59:59.000Z

216

Abstract--The issue of controlled and reliable integration of distributed energy resources into microgrids and large power  

E-Print Network (OSTI)

into microgrids and large power grids has recently gained considerable attention. The microgrid concept, which capabilities. In order to provide uninterruptible power supply to the loads, microgrids are expected to operate. The problem of optimal management of the resources in a microgrid is being widely investigated and recent

Cañizares, Claudio A.

217

Probabilistic safety assessment and reliability based maintenance policies: application to the emergency diesel generators of a nuclear power plant  

Science Conference Proceedings (OSTI)

This study is performed on the four 2.5 MWe emergency diesel generator (EDG) sets of Hydro-Quebec Gentilly-2 Nuclear Power Station. EDGs are safety related systems for the case of the loss of off-site power. This study establishes the basis of an enhanced ... Keywords: emergency diesel generator, maintenance policy, probabilistic safety assessment

Georges Abdul-Nour; Michel Demers; Raynald Vaillancourt

2002-06-01T23:59:59.000Z

218

Efficient and Reliable Reactive Power Supply and Consumption --Insights from an Integrated Program of Engineering and EconomicResearch  

Science Conference Proceedings (OSTI)

In 2005, the Federal Energy Regulatory Commission (FERC) began discussing regulatory policy for reactive-power procurement and pricing in competitive electricity markets. This paper summarizes findings from a unique, interdisciplinary program of public-interest research that lays a formal foundation for evaluating aspects of FERC staff recommendations and offers early insights that should be useful in guiding policy implementation, specifically by: (1) clarifying the consumers and economic characteristics of reactive power as a basis for creating incentives to appropriately price it, (2) defining specific challenges in creating a competitive market for reactive power as well as new tools needed to help ensure such a market functions efficiently, and (3) demonstrating the importance of accounting for the physical characteristics of the transmission network in planning for reactive power and avoiding the exercise of market power by suppliers.

Thomas, Robert J.; Mount, Timothy D.; Schuler, Richard; Schulze,William; Zimmerman, Ray; Alvarado, Fernando; Lesieutre, Bernard C.; Overholt, Philip N.; Eto, Joseph H.

2008-01-01T23:59:59.000Z

219

Slim Holes for Small Power Plants  

DOE Green Energy (OSTI)

Geothermal research study at Sandia National Laboratories has conducted a program in slimhole drilling research since 1992. Although our original interest focused on slim holes as an exploration method, it has also become apparent that they have substantial potential for driving small-scale, off-grid power plants. This paper summarizes Sandia's slim-hole research program, describes technology used in a ''typical'' slimhole drilling project, presents an evaluation of using slim holes for small power plants, and lists some of the research topics that deserve further investigation.

Finger, John T.

1999-08-06T23:59:59.000Z

220

Slim Holes for Small Power Plants  

SciTech Connect

Geothermal research study at Sandia National Laboratories has conducted a program in slimhole drilling research since 1992. Although our original interest focused on slim holes as an exploration method, it has also become apparent that they have substantial potential for driving small-scale, off-grid power plants. This paper summarizes Sandia's slim-hole research program, describes technology used in a ''typical'' slimhole drilling project, presents an evaluation of using slim holes for small power plants, and lists some of the research topics that deserve further investigation.

Finger, John T.

1999-08-06T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Microgrids and Heterogeneous Security, Quality, Reliability, and Availability  

E-Print Network (OSTI)

quality, reliability, and availability, IEEE Power & EnergyReliability, and Availability Chris Marnay EnvironmentalQuality, Reliability, and Availability C. Marnay Ernest

Marnay, Chris

2007-01-01T23:59:59.000Z

222

Renewable Energy in China: Xiao Qing Dao Village Power Wind/Diesel Hybrid Pilot Project  

DOE Green Energy (OSTI)

In 2000, DOE/NREL and the State Power Corporation of China (SPCC) developed a pilot project to electrify Xiao Qing Dao, a small island located in China's Yellow Sea. The project demonstrates the practicality of renewable energy systems for medium-scale, off-grid applications. It consists of four 10 k-W wind turbines connected to a 30-kW diesel generator, a 40-kW inverter and a battery bank.

Not Available

2006-01-01T23:59:59.000Z

223

Renewable Energy in China: Xiao Qing Dao Village Power Wind/Diesel Hybrid Pilot Project  

SciTech Connect

In 2000, DOE/NREL and the State Power Corporation of China (SPCC) developed a pilot project to electrify Xiao Qing Dao, a small island located in China's Yellow Sea. The project demonstrates the practicality of renewable energy systems for medium-scale, off-grid applications. It consists of four 10 k-W wind turbines connected to a 30-kW diesel generator, a 40-kW inverter and a battery bank.

2006-01-01T23:59:59.000Z

224

Substation Configuration Reliability 1 Reliability of Substation Configurations  

E-Print Network (OSTI)

-Repairable Components," Power Learn Electric Power Engineering Education, Module PE.PAS.U15.5, 2005. #12;SubstationSubstation Configuration Reliability 1 Reliability of Substation Configurations Daniel Nack, Iowa substation, it still contains what could be described as weak points or points of failure that would lead

McCalley, James D.

225

North American Electric Reliability Corporation (NERC): Reliability...  

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

American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid. NERC develops and enforces Reliability Standards; assesses...

226

A Comparison of Two Solar-Powered LED Street and Area Lighting Systems: Demonstration Results from Melton Hill Dam and Habitat for Humanity of Greater Chattanooga, Tennessee  

Science Conference Proceedings (OSTI)

Solar-powered lighting systems have developed to the point that they can now be considered as a viable option in replacing traditional grid-connected lighting in many areas. Two sites, Melton Hill dam near Lenoir City, Tennessee, and Habitat for Humanity in Chattanooga served as a unique testing opportunity to investigate the feasibility of LED solar-powered lighting as a replacement for traditional lighting technologies in off-grid applications. In this case study, each site is analyzed individually, but .

2013-09-30T23:59:59.000Z

227

Electricity Reliability  

E-Print Network (OSTI)

and reliability of the energy infrastructure, and facilitating recovery from disruptions to energy supply. MajorElectricity Delivery and Energy Reliability High Temperature Superconductivity (HTS) Visualization on the nation's energy delivery system Superconductors are important to meeting the nation's energy needs

228

CMOS Reliability and Advanced Devices Group  

Science Conference Proceedings (OSTI)

... electron devices for the electronics industry by ... reliability issues in emerging electronic devices. ... Power Device and Thermal MetrologyThe Power ...

2013-04-26T23:59:59.000Z

229

Alternative Power Enterprises | Open Energy Information  

Open Energy Info (EERE)

Power Enterprises Power Enterprises Jump to: navigation, search Logo: Alternative Power Enterprises Name Alternative Power Enterprises Address P.O. Box 351 Place Ridgway, Colorado Zip 81432 Sector Solar Product Design cost effective power solutions for on- and off-grid locations Website http://www.alternative-power.c Coordinates 38.1532985°, -107.811° 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":38.1532985,"lon":-107.811,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

230

Reliability Considerations from Integration of Smart Grid  

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

Considerations Considerations from the Integration of Smart Grid 116-390 Village Blvd., Princeton, NJ 08540 609.452.8060 | 609.452.9550 fax www.nerc.com the reliability of the to ensure bulk power system December 2010 (This page intentionally left blank) to ensure the reliability of the bulk power system Reliability Considerations of Integration of Smart Grid i

231

Unmanned Aerial Vehicle (UAV) Dynamic-Tracking Directional Wireless Antennas for Low Powered Applications that Require Reliable Extended Range Operations in Time Critical Scenarios  

Science Conference Proceedings (OSTI)

The proven value of DOD Unmanned Aerial Vehicles (UAVs) will ultimately transition to National and Homeland Security missions that require real-time aerial surveillance, situation awareness, force protection, and sensor placement. Public services first responders who routinely risk personal safety to assess and report a situation for emergency actions will likely be the first to benefit from these new unmanned technologies. Packable or Portable small class UAVs will be particularly useful to the first responder. They require the least amount of training, no fixed infrastructure, and are capable of being launched and recovered from the point of emergency. All UAVs require wireless communication technologies for real- time applications. Typically on a small UAV, a low bandwidth telemetry link is required for command and control (C2), and systems health monitoring. If the UAV is equipped with a real-time Electro-Optical or Infrared (EO/Ir) video camera payload, a dedicated high bandwidth analog/digital link is usually required for reliable high-resolution imagery. In most cases, both the wireless telemetry and real-time video links will be integrated into the UAV with unity gain omni-directional antennas. With limited on-board power and payload capacity, a small UAV will be limited with the amount of radio-frequency (RF) energy it transmits to the users. Therefore, packable and portable UAVs will have limited useful operational ranges for first responders. This paper will discuss the limitations of small UAV wireless communications. The discussion will present an approach of utilizing a dynamic ground based real-time tracking high gain directional antenna to provide extend range stand-off operation, potential RF channel reuse, and assured telemetry and data communications from low-powered UAV deployed wireless assets.

Scott G. Bauer; Matthew O. Anderson; James R. Hanneman

2005-10-01T23:59:59.000Z

232

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability...  

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

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability TOGETHER. 2010 STRATEGIC PLAN June 2010 TABLE OF CONTENTS OE's Declaration . . . . . . . . . . . . . . . . . . ....

233

Electric power supply and demand 1979 to 1988 for the contiguous United States as projected by the Regional Electric Reliability Councils in their April 1, 1979 long-range coordinated planning reports to the Department of Energy  

SciTech Connect

Information concerning bulk electric power supply and demand is summarized and reviewed. Electric-utility power-supply systems are composed of power sources, transmission and distribution facilities, and users of electricity. In the United States there are three such systems of large geographic extent that together cover the entire country. Subjects covered are: energy forecasts, peak demand forecasts, generating-capacity forecasts, purchases and sales of capacity, and transmission. Extensive data are compiled in 17 tables. Information in two appendices includes a general description of the Regional Electric Reliability Councils and US generating capacity as of June 30, 1979. 3 figures, 17 tables.

Savage, N.; Graban, W.

1979-12-01T23:59:59.000Z

234

Photovoltaic module reliability workshop  

DOE Green Energy (OSTI)

The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

Mrig, L. (ed.)

1990-01-01T23:59:59.000Z

235

Promethean Power Systems | Open Energy Information  

Open Energy Info (EERE)

Promethean Power Systems Promethean Power Systems Jump to: navigation, search Name Promethean Power Systems Place Cambridge, Massachusetts Zip 2138 Product US-based developer of a solar-powered refrigeration system, specializing in off-grid and partially electrified applications. Coordinates 43.003745°, -89.017499° 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":43.003745,"lon":-89.017499,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

236

Reliability evaluation of smart distribution grids.  

E-Print Network (OSTI)

??The term "Smart Grid" generally refers to a power grid equipped with the advanced technologies dedicated for purposes such as reliability improvement, ease of control (more)

Kazemi, Shahram

2011-01-01T23:59:59.000Z

237

Operating experience feedback report-reliability of safety-related steam turbine-driven standby pumps used in US commerical nuclear power plants  

SciTech Connect

Pump failure experience is collected by two primary means: (1) Licensee Event Reports, and (2) Nuclear Plant Reliability Data System failure reports. Certain safety-related turbine-driven standby pumps were identified by these data systems as experiencing significant ongoing repetitive failures of their turbine drivers, resulting in low reliability of the pump units. The root causes of identified failures were determined, and actions to preclude these repetitive failures were identified. 5 refs., 1 tab.

Boardman, J.R. [Nuclear Regulatory Commission, Washington, DC (United States)

1995-01-01T23:59:59.000Z

238

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

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

Publications Publications Screenshot of the cover of an NREL report, titled Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 testing. The NREL wind research program's Gearbox Reliability Collaborative publishes reports and presentations of its activities. General Gearbox Reliability Collaborative Phase 3 Gearbox 2 Test Plan 2013 DOE/NREL Gearbox Reliability Collaborative: All Members Meeting Agenda 2012 Gearbox Reliability Collaborative Phase 1 and 2: Testing and Modeling Results 2012 Gearbox Reliability Collaborative Update: A Brief (Presentation) Jan 2012 Gearbox Reliability Collaborative Update (Presentation) April 2012 NREL Collaborates to Improve Wind Turbine Technology (Fact Sheet) 2012 Gearbox Reliability Collaborative - Phase 1 and 2 Overview

239

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability...  

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

Achieving Energy Reliability TOGETHER. Achieving Energy Reliability TOGETHER. 2010 STRATEGIC PLAN June 2010 This plan reflects OE's ongoing development of a strategy to achieve the...

240

Product Quality Assurance for Off-Grid Lighting in Africa  

E-Print Network (OSTI)

Jeffrey Miller Pivotal Lighting Design 1601 Fifth Avenueaffordable, sustainable, lighting available to the millionsable to realize modern lighting options. R; Doluweera Peon,

Mills, Evan; World Bank

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Product Quality Assurance for Off-Grid Lighting in Africa  

E-Print Network (OSTI)

and stunting the market. Solar PV market experiences inabout 10-15 commonly available solar PV, DC recharging, gridoverview of available PV Solar Lanterns in the market (

Mills, Evan; World Bank

2008-01-01T23:59:59.000Z

242

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 15, NO. 4, APRIL 2007 391 Power and Reliability Management of SoCs  

E-Print Network (OSTI)

's temperature changes due to changes in the workload or during power state transitions, the failure rates due failure rates as a function of different failure mechanisms and power states. B. Failure Mechanisms failure rate to grow due to too frequent switching between the power states. In fact, as each core

De Micheli, Giovanni

243

EPRI Distribution Reliability Practices Repository  

Science Conference Proceedings (OSTI)

A key objective of the Electric Power Research Institutes (EPRIs) research into distribution reliability practices is to identify, document, and provide practice summary descriptions to research participants in a format that facilitates comparison and aids decision makers in identifying the practices in place at other utilities that can be applied to a decision makers utility to improve performance.This report presents distribution reliability practice results ...

2012-10-19T23:59:59.000Z

244

Using Advanced Control and Power Technologies to Improve the Reliability and Energy Efficiency of Petroleum Refining and Petrochemical Manufacturing in California  

Science Conference Proceedings (OSTI)

Full implementation of advanced control and power technologies could save U.S. refineries and petrochemical plants an estimated $7.14 billion/year. California refineries process 1,893,020 barrels of crude per day -- about 11% of the total U.S. crude. Implementation of advanced control and power technologies could provide California refineries and petrochemical plants significant savings from increased energy efficiency and productivity. This report identifies these savings opportunities for California re...

2004-05-17T23:59:59.000Z

245

Electric Reliability & Hurricane Preparedness Plan  

E-Print Network (OSTI)

plant that will improve reliability and stabilize fuel costs · Help meet future load growth and reserve;Mississippi Power Company · Headquartered - Gulfport · Subsidiary of Southern Company · Serves 23 counties Southeast Mississippi · 192,000 retail customers · Generating capacity: 3,166,192 kW · Plant Radcliffe

246

Electricity & Energy Reliability  

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

ENERGY RELIABILITY Human Capital Management Strategic Plan FY2007 Office of Electricity Delivery and Energy Reliability Human Capital Management Strategic Plan September 2006...

247

NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report  

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

NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report The following information represents a partial sequence of events based upon Reliability Coordinator information available to NERC. It is not clear if these events caused the event or were a consequence of other events. NERC is establishing teams to study the event and will coordinate with FERC, DOE, the industry and others. NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report More Documents & Publications North American Electric Reliability Council Power Outage Update North American Electric Reliability Council Outage Announcement U.S. - Canada Power System Outage Task Force: Final Report on the

248

Substation Reliability Centered Maintenance  

SciTech Connect

Substation Reliability Centered Maintenance (RCM) is a technique that is used to develop maintenance plans and criteria so the operational capability of substation equipment is achieved, restored, or maintained. The objective of the RCM process is to focus attention on system equipment in a manner that leads to the formulation of an optimal maintenance plan. The RCM concept originated in the airline industry in the 1970s and has been used since 1985 to establish maintenance requirements for nuclear power plants. The RCM process is initially applied during the design and development phase of equipment or systems on the premise that reliability is a design characteristic. It is then reapplied, as necessary, during the operational phase to sustain a more optimal maintenance program based on actual field experiences. The purpose of the RCM process is to develop a maintenance program that provides desired or specified levels of operational safety and reliability at the lowest possible overall cost. The objectives are to predict or detect and correct incipient failures before they occur or before they develop into major defects, reduce the probability of failure, detect hidden problems, and improve the cost-effectiveness of the maintenance program. RCM accomplishes two basic purposes: (1) It identifies in real-time incipient equipment problems, averting potentially expensive catastrophic failures by communicating potential problems to appropriate system operators and maintenance personnel. (2) It provides decision support by recommending, identifying, and scheduling preventive maintenance. Recommendations are based on maintenance criteria, maintenance history, experience with similar equipment, real-time field data, and resource constraints. Hardware and software are used to accomplish these two purposes. The RCM system includes instrumentation that monitors critical substation equipment as well as computer software that helps analyze equipment data.

Purucker, S.L.

1992-11-01T23:59:59.000Z

249

2007 iREP Symposium-Bulk Power System Dynamics and Control -VII, Revitalizing Operational Reliability August 19-24, 2007, Charleston, SC, USA  

E-Print Network (OSTI)

, electricity markets, load shape, power system economics, reverse auctions in electricity, risk management all the uncertainty of meeting the load and the load forecast. This randomness in the load implies the uncertainty in the load and the load forecast. As such a buyer is unable to meet the demand requirements

Gross, George

250

Performance testing and Bayesian Reliability Analysis of small diameter, high power electric heaters for the simulation of nuclear fuel rod temperatures  

E-Print Network (OSTI)

The conversion of plutonium from a nuclear weapon to nuclear reactor fuel requires an evaluation of the residual gallium as a potential corrosive material within an operating nuclear fuel element. Homogeneous trace levels of gallium may remain following conversion and have the potential to migrate along the thermal gradient within the fuel and concentrate at the cladding-fuel contact zone. A system to investigate this material transport phenomenon was constructed using small diameter (0.18 inch), indirect electric heaters to simulate the centerline temperatures of operating nuclear fuel in a pressurized water reactor. The heater was inserted into annular surrogate fuel pellets containing depleted uranium, cerium oxide and trace quantities (10 ppm) of gallium to perform an initial study of the gallium migration using non-plutonium fuels and evaluate the performance of the simulation system. Heat was removed from the operating heaters by using an innovative liquid metal heat exchanger. The heaters were of a new design and were required to operate at a nominal temperature of 1000?C and for a minimum of 5000 hours. An evaluation of the expected heater lifetime and the thermal simulation system was needed in order to justify the high expense of a proposed full test using prototypic mixed-oxide fuel (MOX) containing plutonium from converted nuclear weapons. Bayesian reliability analysis methods were used to determine the expected heater failure rate because of the expected short test duration and the small sample size. Results from the operation of the simulation system and lifetime data indicate the current heater design is capable of producing the required temperatures and thermal gradients normally found in operating nuclear fuels. However, a design weakness in the heaters resulted in an unacceptably high failure rate of the heaters. The heaters were determined to have a reliability of 0.83 % at 5000 hours of operation with a Mean Time to Failure (MTTF) of 485 hours. The current heater design would require some modification and further testing prior to beginning a full scale test using prototypic MOX fuel pellets.

O'Kelly, David Sean

2000-01-01T23:59:59.000Z

251

Reliability mathematics analysis on traction substation operation  

Science Conference Proceedings (OSTI)

In electrified railway traction power supply systems, the operational qualities and reliabilities of the main traction transformer loop is higher, but ones of bus output units is comparatively low. The traction transformer loop still works when output ... Keywords: Erlang distribution, Markov theory, life, reliability, traction substation, transformer

Hongsheng Su

2008-11-01T23:59:59.000Z

252

Reliability of GaN HEMTs: Electrical and Radiation-induced Failure ...  

Science Conference Proceedings (OSTI)

Symposium, Advanced Materials for Power Electronics, Power Conditioning, and Power Conversion II. Presentation Title, Reliability of GaN HEMTs: Electrical...

253

Designing CPV Receivers With Reliability: Early Evaluation of Components  

E-Print Network (OSTI)

Designing CPV Receivers With Reliability: Early Evaluation of Components Objective Materials from power electronics industry must be proven when integrated in PV applications. Pre-qualification tests improves the receiver design and reliability. ANU microconcentrator test&design experience

254

PowerPoint Presentation  

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

302011 Essential PV power plant features Reliable power conversion Extensive service network Remote monitoring & diagnostics Plant level control Advanced grid-friendly features...

255

Reliable before-fabrication forecasting of expected surface slope distributions for x-ray optics  

E-Print Network (OSTI)

Reliable before-fabrication forecasting of expected surfacefor highly reliable forecasting of the expected surfaceaccuracy of this type of forecasting by comparing the power

Yashchuk, Yekaterina V.

2013-01-01T23:59:59.000Z

256

An Examination of Temporal Trends in Electricity Reliability Based on Reports from U.S. Electric Utilities  

E-Print Network (OSTI)

Reliability of the U.S. Electric Power System: An Assessment2003 IEEE Guide for Electric Power Distribution ReliabilitySmart Self-Healing Electric Power Grid." Power and Energy

Eto, Joseph H.

2013-01-01T23:59:59.000Z

257

Codes, standards, and PV power systems. A 1996 status report  

SciTech Connect

As photovoltaic (PV) electrical power systems gain increasing acceptance for both off-grid and utility-interactive applications, the safety, durability, and performance of these systems gains in importance. Local and state jurisdictions in many areas of the country require that all electrical power systems be installed in compliance with the requirements of the National Electrical Code{reg_sign} (NEC{reg_sign}). Utilities and governmental agencies are now requiring that PV installations and components also meet a number of Institute of Electrical and Electronic Engineers (IEEE) standards. PV installers are working more closely with licensed electricians and electrical contractors who are familiar with existing local codes and installation practices. PV manufacturers, utilities, balance of systems manufacturers, and standards representatives have come together to address safety and code related issues for future PV installations. This paper addresses why compliance with the accepted codes and standards is needed and how it is being achieved.

Wiles, J

1996-06-01T23:59:59.000Z

258

Substation reliability -- Practical application and system approach  

SciTech Connect

Practical application of reliability analysis was made for the comparison of alternate line and bus arrangements of a future transmission substation with potential savings of up to $3.6 M. The paper describes how both the substation and the power system were simulated by using computer programs STAREL and COMREL. It presents the method used to obtain the most accurate estimates for the outage data of the system components. Finally, it expresses the results with simple reliability indices which can be meaningful for management. The results of the study show the need to include the reliability of the transmission system in a substation reliability evaluation.

Save, P. [Southern California Edison Co., Rosemead, CA (United States)

1995-02-01T23:59:59.000Z

259

Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel  

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

Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services GNEP would build and strengthen a reliable international fuel services consortium under which "fuel supplier nations" would choose to operate both nuclear power plants and fuel production and handling facilities, providing reliable fuel services to "user nations" that choose to only operate nuclear power plants. This international consortium is a critical component of the GNEP initiative to build an improved, more proliferation-resistant nuclear fuel cycle that recycles used fuel, while Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services More Documents & Publications

260

Auto reliability project  

Science Conference Proceedings (OSTI)

Reliability is defined as the probability that an item (system, subsystem, or component) performs according to specifications. When test data are sparse (such as with a new concept design), expert judgment can be used to estimate reliability. Using expert ...

Jane M. Booker; Thomas R. Bement

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

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

All Members Meeting All Members Meeting The Gearbox Reliability Collaborative (GRC) All Members Meeting was held on February 4-5, 2013. The meeting covered advancements made across the NREL GRC project and the latest industry updates on gearbox reliability and operations and maintenance practices. The presentations covered gearbox design updates, gearbox testing updates, experimental data analysis, and operations and maintenance research. Presentations Monday, February 4 Time Presenter Organization Presentation 8:30 a.m. Paul Veers NREL Welcome 8:45 a.m. Mike Derby DOE Overview 9:05 a.m. Jon Keller NREL Gearbox Reliability Collaborative Status and Plans 9:20 a.m. Hal Link NREL New Gearbox #2 Test Plan 9:40 a.m. Hal Link NREL NWTC Dynos and Grid Simulator 10:00 a.m. Jon Keller/Brian McNiff NREL/MLI Gearbox Reliability Collaborative, Phase 3: High Speed Shaft Bearing Loads

262

Increasing the Reliability of Reliability Diagrams  

Science Conference Proceedings (OSTI)

The reliability diagram is a common diagnostic graph used to summarize and evaluate probabilistic forecasts. Its strengths lie in the ease with which it is produced and the transparency of its definition. While visually appealing, major long-...

Jochen Brcker; Leonard A. Smith

2007-06-01T23:59:59.000Z

263

Architectural design for reliability  

DOE Green Energy (OSTI)

Design-for-reliability concepts can be applied to the products of the construction industry, which includes buildings, bridges, transportation systems, dams, and other structures. The application of a systems approach to designing in reliability emphasizes the importance of incorporating uncertainty in the analyses, the benefits of optimization analyses, and the importance of integrating reliability, safety, and security. 4 refs., 3 figs.

Cranwell, R.M.; Hunter, R.L.

1997-08-01T23:59:59.000Z

264

Transmission Reliability Program Peer Review. October 19-20,...  

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

power system reliability and visibility through wide-area measurement and control. It is developing advanced technologies and tools to help create a resilient electric...

265

title Microgrid Reliability Modeling and Battery Scheduling Using...  

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

article title Microgrid Reliability Modeling and Battery Scheduling Using Stochastic Linear Programming journal Journal of Electric Power Systems Research volume year month pages...

266

Ensuring a Reliable Supply of Medical Radioisotopes | National...  

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

Ensuring a Reliable Supply of Medical Radioisotopes | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy...

267

Reliability and Markets Program Information  

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

Summary of the Tranmission Reliability program's Reliability and Markets activity area. The program helps to increase grid reliability and reduce costs for customers using integrated market and...

268

Reliability and maintainability program  

SciTech Connect

The program's goals are to accelerate the adoption of active solar energy systems in building applications by improving the reliability and maintainability of installed systems. The project is designed to accomplish this by providing the latest information; by assisting the industry in improving reliability and maintainability; by assisting in design, manufacture, installation and maintenance of reliable and durable systems; and by assisting in the development of codes and standards. Work and accomplishments in these areas are enumerated. (LEW)

Eden, A.

1981-05-01T23:59:59.000Z

269

Reliability of Electric Utility Distribution Systems: EPRI White Paper  

Science Conference Proceedings (OSTI)

This report discusses what is known about electric power distribution system reliability and investigates whether there are generally available methods for performing reliability analysis for distribution systems. The theory of the reliability of general systems is well understood. A fundamental issue is whether an appropriate implementation of the theory exists in a form readily usable by distribution system planners and designers.

2000-10-17T23:59:59.000Z

270

Human Reliability Program (HRP)  

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

Office of SecurityHRP Training Certification- HTML- Flash10 CFR 712, Human Reliability ProgramHRP HandbookTools for Clinicians- Medication List- Medical Records Checklist

271

Materials Reliability Employment Opportunities  

Science Conference Proceedings (OSTI)

... from an in-house microfabrication facility that has ... well as access to other world-class NIST facilities. ... of membrane reliability is essential for ensuring ...

2012-10-15T23:59:59.000Z

272

Performance and Reliability of the Solar Progress Photovoltaic Plant  

Science Conference Proceedings (OSTI)

Amorphous silicon is presently a leading contender for cost-effective photovoltaic power generation. Findings reported here confirm that the Solar Progress experimental power plant with amorphous silicon modules operated with high reliability, and no unexpected problems arose.

1991-01-23T23:59:59.000Z

273

General Aviation Aircraft Reliability Study  

Science Conference Proceedings (OSTI)

This reliability study estimates Complex General Aviation (GA) Aircraft System reliability. As part of an effort to successfully improve the safety and reliability of the next generation of GA aircraft, a benchmarking of the current reliability of GA ...

Pettit Duane; Turnbull Andrew

2001-02-01T23:59:59.000Z

274

Microgrids and Heterogeneous Power Quality and Reliability  

E-Print Network (OSTI)

ed. : special issue on microgrids, International Journal ofG. Venkataramanan: Microgrids in the evolving electricitymore background on microgrids, please see the presentations

Marnay, Chris

2008-01-01T23:59:59.000Z

275

Microgrids and Heterogeneous Power Quality and Reliability  

E-Print Network (OSTI)

............................................................................................ 19 2.5 Arizona Public Service Company (APS) (Narrative form Arizona Public Service Company Narrative Sandia National Laboratories Narrative Oak Ridge National technologies at their own research facilities. The Arizona Public Service Company efforts included

276

Microgrids and Heterogeneous Power Quality and Reliability  

E-Print Network (OSTI)

International Journal of Distributed Energy Resources (using (DER): distributed energy resources, Proc. of IEEEH. Eto : Integration of Distributed Energy Resources: The

Marnay, Chris

2008-01-01T23:59:59.000Z

277

Microgrids and Heterogeneous Power Quality and Reliability  

E-Print Network (OSTI)

by embedded generation within the distribution system, byof local generation embedded in the distribution system. Ingeneration, long distance bulk transmission of energy over centrally operated high voltage meshed grids, and local distribution

Marnay, Chris

2008-01-01T23:59:59.000Z

278

SIMPLE AND RELIABLE ACTIVE POWER FILTER FOR  

E-Print Network (OSTI)

stabilization requires. As summarized in Table 4 and Figure 2, we've defined the Rosenfeld unit assuming this approximation include Brown et al. (2008), EPRI (2009), Koomey et al. (1991), Meier et al. (1983) Rosenfeld Another widely used approximation for understanding carbon reductions is that of the "Stabilization wedge

279

Microgrids and Heterogeneous Power Quality and Reliability  

E-Print Network (OSTI)

Resources: The CERTS MicroGrid Concept, LBNL-50829, (2002).by reference to two ongoing microgrid tests in the U.S. andmacrogrid. In this paper, a microgrid is a local cluster of

Marnay, Chris

2008-01-01T23:59:59.000Z

280

ERUS 2014 Bulk Power and Reliability  

U.S. Energy Information Administration (EIA)

SMART GRID Transmission System Devices A proposed EIA-411 survey schedule will collect data on: The number of networked and non-networked Phasor Measurement ...

Note: This page contains sample records for the topic "reliable off-grid power" 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

Optimal operational strategy for hybrid renewable energy system using genetic algorithms  

Science Conference Proceedings (OSTI)

Off-grid settlements require efficient, reliable and cost-effective renewable energy as alternative to the power supplied by diesel generator. Techno-economic analysis is required to find the optimum renewable energy system in the long run. This paper ... Keywords: genetic algorithm, hybrid system, operation strategy, optimization, renewable energy

Juhari Ab. Razak; Kamaruzzaman Sopian; Zulkifli Mohd Nopiah; Azami Zaharim; Yusoff Ali

2007-12-01T23:59:59.000Z

282

Optimal operational strategy for hybrid renewable energy system using genetic algorithms  

Science Conference Proceedings (OSTI)

Off-grid settlements require efficient, reliable and cost-effective renewable energy as alternative to the power supplied by diesel generator. Techno-economic analysis is required to find the optimum renewable energy system in the long run. This paper ... Keywords: genetic algorithms, hybrid system, operation strategy, optimization, renewable energy

Kamaruzzaman Sopian; Azami Zaharim; Yusoff Ali; Zulkifli Mohd Nopiah; Juhari Ab. Razak; Nor Salim Muhammad

2008-04-01T23:59:59.000Z

283

Hawaii electric system reliability.  

SciTech Connect

This report addresses Hawaii electric system reliability issues; greater emphasis is placed on short-term reliability but resource adequacy is reviewed in reference to electric consumers' views of reliability "worth" and the reserve capacity required to deliver that value. The report begins with a description of the Hawaii electric system to the extent permitted by publicly available data. Electrical engineering literature in the area of electric reliability is researched and briefly reviewed. North American Electric Reliability Corporation standards and measures for generation and transmission are reviewed and identified as to their appropriateness for various portions of the electric grid and for application in Hawaii. Analysis of frequency data supplied by the State of Hawaii Public Utilities Commission is presented together with comparison and contrast of performance of each of the systems for two years, 2010 and 2011. Literature tracing the development of reliability economics is reviewed and referenced. A method is explained for integrating system cost with outage cost to determine the optimal resource adequacy given customers' views of the value contributed by reliable electric supply. The report concludes with findings and recommendations for reliability in the State of Hawaii.

Silva Monroy, Cesar Augusto; Loose, Verne William

2012-09-01T23:59:59.000Z

284

NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report  

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

NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report The following information represents a partial sequence of events based upon Reliability Coordinator information available to NERC. It is not clear if these events caused the event or were a consequence of other events. NERC is establishing teams to study the event and will coordinate with FERC, DOE, the industry and others. NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance Report More Documents & Publications North American Electric Reliability Council Power Outage Update Blackout 2003: Final Report on the August 14, 2003 Blackout in the United States and Canada: Causes and Recommendations

285

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

E-Print Network (OSTI)

Performance of Wind Power Generation Working Group. IEC1971. Control of Generation and Power Flow on Interconnectedvariable renewable generation on power system reliability,

Eto, Joseph H.

2011-01-01T23:59:59.000Z

286

Fuel cell power systems for remote applications. Phase 1 final report and business plan  

DOE Green Energy (OSTI)

The goal of the Fuel Cell Power Systems for Remote Applications project is to commercialize a 0.1--5 kW integrated fuel cell power system (FCPS). The project targets high value niche markets, including natural gas and oil pipelines, off-grid homes, yachts, telecommunication stations and recreational vehicles. Phase 1 includes the market research, technical and financial analysis of the fuel cell power system, technical and financial requirements to establish manufacturing capability, the business plan, and teaming arrangements. Phase 1 also includes project planning, scope of work, and budgets for Phases 2--4. The project is a cooperative effort of Teledyne Brown Engineering--Energy Systems, Schatz Energy Research Center, Hydrogen Burner Technology, and the City of Palm Desert. Phases 2 through 4 are designed to utilize the results of Phase 1, to further the commercial potential of the fuel cell power system. Phase 2 focuses on research and development of the reformer and fuel cell and is divided into three related, but potentially separate tasks. Budgets and timelines for Phase 2 can be found in section 4 of this report. Phase 2 includes: Task A--Develop a reformate tolerant fuel cell stack and 5 kW reformer; Task B--Assemble and deliver a fuel cell that operates on pure hydrogen to the University of Alaska or another site in Alaska; Task C--Provide support and training to the University of Alaska in the setting up and operating a fuel cell test lab. The Phase 1 research examined the market for power systems for off-grid homes, yachts, telecommunication stations and recreational vehicles. Also included in this report are summaries of the previously conducted market reports that examined power needs for remote locations along natural gas and oil pipelines. A list of highlights from the research can be found in the executive summary of the business plan.

NONE

1998-02-01T23:59:59.000Z

287

POWER PLANT RELIABILITY-AVAILABILITY AND STATE REGULATION. VOLUME 7 OF THE FINAL REPORT ON HEALTH AND SAFETY IMPACTS OF NUCLEAR, GEOTHERMAL, AND FOSSIL-FUEL ELECTRIC GENERATION IN CALIFORNIA  

E-Print Network (OSTI)

Summary of Nuclear Power Plant Operating Experience forResponse Planning for Nuclear Power Plants in California,"Densities Surrounding Nuclear Power Plants," by A.V. Nero,

Nero, A.V.

2010-01-01T23:59:59.000Z

288

Automate feeders to improve reliability  

SciTech Connect

Pacific Gas and Electric Co. (PG and E) improved system reliability and saved money with an alarm and control system for substation distribution switches using remote control by standard telephone-communication links. The method is especially well suited for urban and suburban areas with independent telephone and power systems. The automated systems can also add capability to areas now limited by the emergency capability. The primary distribution alarm and control system has both a substation and a field switch element. Photographs accompanying the description help to explain how the controls work. 7 figures. (DCK)

1981-01-01T23:59:59.000Z

289

Multi-Microgrids Reliability and Islanding Operation Enhancement, under Different Dispatchable-Renewable DG Units Penetration Levels.  

E-Print Network (OSTI)

??Electrical reliability assurance is a very important aspect of electrical power systems; significant consideration should be given to reliability at both the planning and operation (more)

Essam Abdelkhalek Abdelaty, Mohammed

2012-01-01T23:59:59.000Z

290

Photovoltaic system reliability  

SciTech Connect

This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

1997-10-01T23:59:59.000Z

291

Estimated Value of Service Reliability for Electric Utility Customers in the United States  

E-Print Network (OSTI)

and Reliability of Electric Power. Power Symposium, 2006.of a Terrorist Attack on the Electric Power System of LosR. Windell. The Cost of Electric Power Interruptions in the

Sullivan, M.J.

2009-01-01T23:59:59.000Z

292

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

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

Projects Projects Gearbox deficiencies are the result of many factors. Through gearbox modeling and testing, condition monitoring, and the failure database, the collaborative is expanding the industry's knowledge base, recommending efficient and cost-effective improvements, and facilitating immediate improvements in the gearbox life cycle. Gearbox Modeling and Testing Illustration of representative gearbox including the hub, main bearing, main shaft, gearbox, brake, high speed shaft, generator, and bed plate. A complete gearbox redesign has been completed in a collaborative effort between NREL and industry partners. This process documented and analyzed the design process and produced a new gearbox design that integrates knowledge from previous Gearbox Reliability Collaborative (GRC) activities.

293

Hydropower Reliability Study  

Science Conference Proceedings (OSTI)

Though hydroelectric plants are highly reliable, even a 1% improvement in their availability could save the U.S. utility industry $125 million per year. This comprehensive review of hydropower data and practices recommends ways to achieve such improvement.

1984-03-01T23:59:59.000Z

294

Real world optimal UPFC placement and its impact on reliability  

Science Conference Proceedings (OSTI)

UPFC allows simultaneous control of active power flow, reactive power flow, and voltage magnitude at the UPFC terminals. These characteristics give UPFC the capability to enhance the performance of the power system during various operating conditions. ... Keywords: genetic algorithm (GA), optimal location, optimal setting, outage cost, reliability, unified power flow controller (UPFC)

Ahmed M. Othman; Exander Gaun; Matti Lehtonen; Mahdi El-Arini

2010-02-01T23:59:59.000Z

295

Catalog of DC Appliances and Power Systems  

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

Catalog of DC Appliances and Power Systems Catalog of DC Appliances and Power Systems Title Catalog of DC Appliances and Power Systems Publication Type Report LBNL Report Number LBNL-5364E Year of Publication 2011 Authors Garbesi, Karina, Vagelis Vossos, and Hongxia Shen Document Number LBNL-5364E Date Published October Publisher Lawrence Berkeley National Laboratory Abstract This document catalogs the characteristics of current and potential future direct current (DC) products and power systems. It is part of a larger U.S. Department of Energy-funded project, "Direct-DC Power Systems for Energy Efficiency and Renewable Energy Integration with a Residential and Small Commercial Focus". That project is investigating the energy-savings potential, benefits, and barriers of using DC generated by on-site renewable energy systems directly in its DC form, rather than converting it first to alternating current (AC) for distribution to loads. Two related reports resulted from this work: this Catalog and a companion report that addresses direct-DC energy savings in U.S. residential buildings.Interest in 'direct-DC' is motivated by a combination of factors: the very rapid increase in residential and commercial photovoltaic (PV) power systems in the United States; the rapid expansion in the current and expected future use of energy efficient products that utilize DC power internally; the demonstrated energy savings of direct-DC in commercial data centers; and the current emergence of direct-DC power standards and products designed for grid-connected residential and commercial products. Based on an in-depth study of DC appliances and power systems, we assessed off-grid markets for DC appliances, the DC compatibility of mainstream electricity end-uses, and the emerging mainstream market for direct-DC appliances and power systems.

296

Gearbox Reliability Collaborative Update (Presentation)  

SciTech Connect

This presentation was given at the Sandia Reliability Workshop in August 2013 and provides information on current statistics, a status update, next steps, and other reliability research and development activities related to the Gearbox Reliability Collaborative.

Sheng, S.

2013-10-01T23:59:59.000Z

297

Reconsideration of Software Reliability Measurements  

Science Conference Proceedings (OSTI)

In this paper, we discuss the major weaknesses of the software reliability measurements currently used and propose a new model of software reliability estimation. For the time being, the software reliability models are employed far from ubiquitous. As ...

Shiyi Xu

2007-10-01T23:59:59.000Z

298

Guidelines for New High Reliability Fossil Plants  

Science Conference Proceedings (OSTI)

Many new power plants are being constructed throughout the world, and many organizations are beginning to design and commission new fossil plants. These circumstances provide an excellent opportunity to build long-term reliability into the specifications and designs for the new plants.

2009-01-28T23:59:59.000Z

299

Reliability enhancement using optimal distribution feeder reconfiguration  

Science Conference Proceedings (OSTI)

Failure statistics show that distribution networks engage the most contribution to the customer unavailability services. Optimal reconfiguration of distribution systems has many advantages like total power losses reduction, voltage profile enhancement, ... Keywords: AENS, DFR, Distribution feeder reconfiguration (DFR), ISFLA, Improved shuffled frog leaping algorithm (ISFLA), MDFR, Multiobjective optimization, Reliability enhancement, SAIDI, SAIFI

Abdollah Kavousi-Fard; Mohammad-Reza Akbari-Zadeh

2013-04-01T23:59:59.000Z

300

POWER PLANT RELIABILITY-AVAILABILITY AND STATE REGULATION. VOLUME 7 OF THE FINAL REPORT ON HEALTH AND SAFETY IMPACTS OF NUCLEAR, GEOTHERMAL, AND FOSSIL-FUEL ELECTRIC GENERATION IN CALIFORNIA  

E-Print Network (OSTI)

Planning for Nuclear Power Plants in California," by W.W.S.Surrounding Nuclear Power Plants," by A.V. Nero, C.H.Fuel and Geo- thermal Power Plants," by G.D. Case, T.A.

Nero, A.V.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

AMENDED AND RESTATED DELEGATION AGREEMENT BETWEEN NORTH AMERICAN ELECTRIC RELIABILITY CORPORATION AND TEXAS REGIONAL ENTITY A DIVISION OF ELECTRIC RELIABILITY  

E-Print Network (OSTI)

(NERC), an organization certified by the Federal Energy Regulatory Commission (Commission) pursuant to Section 215(c) of the Federal Power Act to establish and enforce Reliability Standards for the bulk power system, and the Texas Regional Entity a Division of Electric Reliability Council of Texas, Inc. (Texas RE), an organization established to develop and enforce Reliability Standards within the geographic boundaries identified on Exhibit A to this Agreement, and for other purposes. NERC and Texas RE may be individually referred to herein as Party or collectively as Parties. WITNESSETH WHEREAS, Subtitle A of the Electricity Modernization Act of 2005 added Section 215 to the Federal Power Act (16 U.S.C. 824n) (hereafter the Act) and, among other things, provides for the establishment of an electric reliability organization (ERO) to develop and enforce Reliability Standards applicable to all owners, operators, and users of the bulk power system; WHEREAS, the Commission has adopted regulations for the implementation of the Act

unknown authors

2009-01-01T23:59:59.000Z

302

Regulatory Commission (Commission) directs the North American Electric Reliability  

E-Print Network (OSTI)

submit to the Commission for approval proposed Reliability Standards that address the impact of geomagnetic disturbances (GMD) on the reliable operation of the Bulk-Power System. The Commission directs NERC to implement the directive in two stages. In the first stage, NERC must submit, within six months of the effective date of this Final Rule, one or more Reliability Standards that require owners and operators of the Bulk-Power System to develop and implement operational procedures to mitigate the effects of GMDs consistent with the reliable operation of the Bulk-Power System. In the second stage, NERC must submit, within 18 months of the effective date of this Final Rule, one or more Reliability Standards that require owners and operators of the Bulk-Power System to conduct initial and on-going assessments of the potential impact of benchmark GMDDocket No. RM12-22-000- 2-events on Bulk-Power System equipment and the Bulk-Power System as a whole. The Second Stage GMD Reliability Standards must identify benchmark GMD events that specify what severity GMD events a responsible entity must assess for potential impacts on the Bulk-Power System. If the assessments identify potential impacts from benchmark GMD events, the Reliability Standards should require owners and operators

Cfr Part

2013-01-01T23:59:59.000Z

303

Power Electronics Reliability Kick Off Meeting ? Silicon Power...  

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

Management (PHM) * Integrated Logistics Support * Technology Management Optimization * Asset Acquisition & Mission Planning * Risk Assessment & Risk Management Technologies...

304

Grid reliability management tools  

SciTech Connect

To summarize, Consortium for Electric Reliability Technology Solutions (CERTS) is engaged in a multi-year program of public interest R&D to develop and prototype software tools that will enhance system reliability during the transition to competitive markets. The core philosophy embedded in the design of these tools is the recognition that in the future reliability will be provided through market operations, not the decisions of central planners. Embracing this philosophy calls for tools that: (1) Recognize that the game has moved from modeling machine and engineering analysis to simulating markets to understand the impacts on reliability (and vice versa); (2) Provide real-time data and support information transparency toward enhancing the ability of operators and market participants to quickly grasp, analyze, and act effectively on information; (3) Allow operators, in particular, to measure, monitor, assess, and predict both system performance as well as the performance of market participants; and (4) Allow rapid incorporation of the latest sensing, data communication, computing, visualization, and algorithmic techniques and technologies.

Eto, J.; Martinez, C.; Dyer, J.; Budhraja, V.

2000-10-01T23:59:59.000Z

305

Evaluation of Condition Assessment for Continued Reliable Operation  

Science Conference Proceedings (OSTI)

Fossil power plant operators face increasing complexity relative to long-range planning for existing fossil generation assets. With the increased focus to provide reliable and cost-effective power coupled with new and increasingly stringent existing environmental regulations, many power companies face difficult decisions regarding investment in aging assets, as opposed to building new generation units or providing ...

2013-04-26T23:59:59.000Z

306

2010 Transmission Reliability Program Peer Review | Department of Energy  

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

Transmission Reliability Program Peer Review Transmission Reliability Program Peer Review 2010 Transmission Reliability Program Peer Review The Transmission Reliability research area focuses on two key areas: 1) Real-Time Grid Reliability Management and 2) Reliability and Markets. The first area develops monitoring and analysis tools that process synchrophasor data to enable real-time assessment of grid status and stability margins, with the goal of improving power system reliability and visibility through wide-area measurement and control. It is developing advanced technologies and tools to help create a resilient electric transmission system that can better detect disturbances, accommodate a variety of generation sources, and automatically reconfigure the grid to prevent widespread outages and/or rebalance the system. The second area

307

North American Electric Reliability Corporation (NERC): Ensuring...  

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

North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk Electric System North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk...

308

Coming Full Circle in Florida: Improving Electric Grid Reliability and  

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

Coming Full Circle in Florida: Improving Electric Grid Reliability Coming Full Circle in Florida: Improving Electric Grid Reliability and Resiliency Coming Full Circle in Florida: Improving Electric Grid Reliability and Resiliency May 2, 2013 - 11:16am Addthis Inside Florida Power & Light's Transmission Performance Diagnostic Center. | Photo courtesy of Florida Power & Light. Inside Florida Power & Light's Transmission Performance Diagnostic Center. | Photo courtesy of Florida Power & Light. In 2009, at the DeSoto Next Generation Solar Energy Center, President Obama announced the launch of the $3.4 billion Smart Grid Investment Grant program. In 2009, at the DeSoto Next Generation Solar Energy Center, President Obama announced the launch of the $3.4 billion Smart Grid Investment Grant program. Inside Florida Power & Light's Transmission Performance Diagnostic Center. | Photo courtesy of Florida Power & Light.

309

SEPCO - Solar Electric Power Company | Open Energy Information  

Open Energy Info (EERE)

SEPCO - Solar Electric Power Company SEPCO - Solar Electric Power Company Jump to: navigation, search Logo: SEPCO - Solar Electric Power Company Name SEPCO - Solar Electric Power Company Address 1521 SE Palm Court Place Stuart, Florida Zip 34994 Sector Solar Product Commercial Solar Lighting & Off Grid Solar Power Systems Year founded 1994 Number of employees 11-50 Company Type For Profit Phone number 772-220-6615 Website http://www.sepco-solarlighting Coordinates 27.170937°, -80.232438° 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":27.170937,"lon":-80.232438,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

310

Smart Grid: Creating Jobs while Delivering Reliable,  

Open Energy Info (EERE)

Smart Grid: Creating Jobs while Delivering Reliable, Smart Grid: Creating Jobs while Delivering Reliable, Environmentally-friendly Energy Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(1992) Super contributor 2 March, 2010 - 14:14 imported OpenEI On April 16th, 2009, Vice President Joe Biden announced that the Department of Energy was planning to develop a stronger, more reliable energy grid. The plan would allocate $3.4 billion in funds to be distributed across the nation, aiding projects aimed at improving and updating the current electrical power grid in the United States. Two projects are funded by smart grid: smaller and larger. Smaller projects range from $300,000 to $20,000,000. These projects typically focus on upgrading equipment in less populated ares. Larger projects range from

311

Strategic Insights on Security, Quality, Reliability, and Availability  

Science Conference Proceedings (OSTI)

This report provides security criteria and performance metrics for assessing the electric power system. It is part of a larger project on the strategy for managing security, quality, reliability, and availability (SQRA) performance of electric power systems. The main focus of this update is measurement of the security component. It also addresses emerging North American Electric Reliability Council (NERC) operating and planning standards and their roles in managing SQRA performance. This report is intend...

2005-03-31T23:59:59.000Z

312

Fuel Reliability Program: EPRI PCI Guidelines Support Analyses  

Science Conference Proceedings (OSTI)

In 2008, the Electric Power Research Institute (EPRI) issued a series of fuel reliability guideline reports in support of the Institute of Nuclear Power Operations (INPOs) Zero by 2010 initiative. For the development of Fuel Reliability Guidelines: Pellet-Cladding Interaction (1015453), the fuel vendorsAREVA, GNF, and Westinghouseprovided considerable proprietary information. This report serves as a reference that supplements report 1015453 and provides details on AREVA PWR and BWR fuel.

2009-05-19T23:59:59.000Z

313

Fuel Reliability Program: EPRI PCI Guidelines Support Analyses  

Science Conference Proceedings (OSTI)

In 2008, the Electric Power Research Institute (EPRI) issued a series of fuel reliability guideline reports in support of the Institute of Nuclear Power Operations (INPOs) Zero by 2010 initiative. For the development of Fuel Reliability Guidelines: Pellet-Cladding Interaction (1015453), the fuel vendorsAREVA, GNF, and Westinghouseprovided considerable proprietary information. This report serves as a reference that supplements report 1015453 and provides details on Westinghouse PWR and BWR fuel.

2009-05-19T23:59:59.000Z

314

Component reliability testing  

SciTech Connect

Component and system reliability of active solare energy systems continues to be a major concern of designers, manufacturers, installers, and consumers. Six test loops were constructed at the Solar Energy Research Institute in Golden, Colorado, to thermally cycle active solar energy system components. Drain valves, check valves, air vents, vacuum breakers, tempering valves, and polybutylene pipe were included in the testing. Test results show poor reliabiity of some of the components and limited performance from others. The results lead to a better understanding of certain failures in the field and present designers with realistic expectations for these components.

Farrington, R.B.

1984-03-01T23:59:59.000Z

315

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

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

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

316

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

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

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

317

Office of Electricity Delivery and Energy Reliability  

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

Subtopic c. References: Subtopic c. References: 1. Thomas B. Johansson, Henry Kelly, Amulya K.N. Reddy, and Robert H. Williams, "Renewable Energy: Sources for Fuels and Electricity", Island Press, 1993 2. Patrick Takahashi and Andrew Trenka, "Ocean Thermal Energy Conversion", John Wiley & sons, 1996. *All references can be accessed at: http://archive.epri.com/oceanenergy/streamenergy.html#reports OFFICE OF ELECTRICITY DELIVERY AND ENERGY RELIABILITY 28. NATURAL DISASTER REDUCTION THROUGH TECHNOLOGY The U.S. electric power sector is a critical part of our society. Virtually all aspects of residential, industrial, and commercial activities depend on safe, reliable, and affordable electricity. Electricity is among the most infrastructure-intensive segments of the energy sector - the electricity grid includes a network of 5,000 power

318

Joint Technical Summit on Reliability Impacts of Extreme Weather and Climate Change  

Science Conference Proceedings (OSTI)

This report provides proceedings from a workshop on the effects of climate change and extreme weather on power system reliability. The workshop was held October 14-15, 2008, in Portland, Oregon, and was sponsored by Power Systems Engineering Research Center (PSERC), the North American Electric Reliability Corporation (NERC), and the Electric Power Research Institute (EPRI).

2008-12-22T23:59:59.000Z

319

Dairyland Power Cooperative comments | Department of Energy  

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

comments Dairyland Power Cooperative comments Response comments from Dairyland Power Cooperative on the Smart Grid RFI: Addressing Policy and Logisitical Reliability Dairyland...

320

Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request  

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

Office of Electricity Delivery & Energy Reliability FY 2012 Budget Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request Presentation Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request Presentation Presentation by Patricia Hoffman of the Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request. OE's FY 2012 budget request represents a strong commitment to modernizing the grid and providing the reliable, affordable, and secure electric power needed to expand economic recovery enable sources Office of Electricity Delivery and Energy Reliability recovery, the transition to renewable energy sources, and achieve the President's clean energy goals. Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request Presentation More Documents & Publications

Note: This page contains sample records for the topic "reliable off-grid power" 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

Modal Analysis of Power Systems with Doubly Fed Induction Generators.  

E-Print Network (OSTI)

?? To ensure the reliable operation of the power system, stability analysis considering theinteraction between wind power and power system must be understood. In this (more)

Li, Jialin

2010-01-01T23:59:59.000Z

322

Consider insulation reliability  

SciTech Connect

This paper reports that when calcium silicate and two brands of mineral wool were compared in a series of laboratory tests, calcium silicate was more reliable. And in-service experience with mineral wool at a Canadian heavy crude refinery provided examples of many of the lab's findings. Lab tests, conducted under controlled conditions following industry accepted practices, showed calcium silicate insulation was stronger, tougher and more durable than the mineral wools to which it was compared. For instance, the calcium silicate insulation exhibited only some minor surface cracking when heated to 1,200[degrees]F (649[degrees]C), while the mineral wools suffered binder burnout resulting in sagging, delamination and a general loss of dimensional stability.

Gamboa (Manville Mechanical Insulations, a Div. of Schuller International Inc., Denver, CO (United States))

1993-01-01T23:59:59.000Z

323

Continuous Reliability Enhancement for Wind (CREW) database : wind plant reliability benchmark.  

SciTech Connect

To benchmark the current U.S. wind turbine fleet reliability performance and identify the major contributors to component-level failures and other downtime events, the Department of Energy funded the development of the Continuous Reliability Enhancement for Wind (CREW) database by Sandia National Laboratories. This report is the third annual Wind Plant Reliability Benchmark, to publically report on CREW findings for the wind industry. The CREW database uses both high resolution Supervisory Control and Data Acquisition (SCADA) data from operating plants and Strategic Power Systems' ORAPWind%C2%AE (Operational Reliability Analysis Program for Wind) data, which consist of downtime and reserve event records and daily summaries of various time categories for each turbine. Together, these data are used as inputs into CREW's reliability modeling. The results presented here include: the primary CREW Benchmark statistics (operational availability, utilization, capacity factor, mean time between events, and mean downtime); time accounting from an availability perspective; time accounting in terms of the combination of wind speed and generation levels; power curve analysis; and top system and component contributors to unavailability.

Hines, Valerie Ann-Peters; Ogilvie, Alistair B.; Bond, Cody R.

2013-09-01T23:59:59.000Z

324

Power Technologies Energy Data Book: Fourth Edition, Chapter...  

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

Table 5.13a - North American Electric Reliability Council Map for the United States ECAR NPCC ECAR East Central Area Reliability Coordination Agreement Northeast Power Coordinating...

325

Grid Equipment Reliability Study  

Science Conference Proceedings (OSTI)

Throughout the world, utilities have witnessed changes to electrical power markets. These changes have presented new and continuous challenges to maintaining the transmission system's integrity. In the past, emphasis at the transmission level has been on the system as a whole and not at the equipment level. This report summarizes the finding of a study that investigated the need to develop a new set of metrics and benchmarks to measure and compare grid equipment performance.

2001-12-10T23:59:59.000Z

326

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). ... 16 - SERC Reliability Corporation / Virginia-Carolina REG016 REG016:ca_ConventionalH ...

327

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). ... 04 - Midwest Reliability Council / West REG004 REG004:ca_ConventionalH REG004:ca_Geothermal ...

328

www.eia.gov  

U.S. Energy Information Administration (EIA)

4/ Does not include off-grid photovoltaics (PV). ... 09 - Reliability First Corporation / East REG009 REG009:ca_ConventionalH REG009:ca_Geothermal ...

329

Research Addressing Power Plant Water  

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

Addressing Power Plant Water Management to Minimize Water Use while Providing Reliable Electricity Generation Water and Energy 2 Water and Energy are inextricably linked. Because...

330

Composite System based Multi-Area Reliability Evaluation  

E-Print Network (OSTI)

Currently, major power systems almost invariably operate under interconnected conditions to transfer power in a stable and reliable manner. Multi-area reliability evaluation has thus become an invaluable tool in the planning and operation of such systems. Multi - area reliability evaluation is typically done by considering equivalent tie lines between different areas in an integrated power system. It gives approximate results for the reliability indices of a power system as it models each of the areas as a single node to which are connected the entire area generation and loads. The intratransmission lines are only indirectly modeled during the calculation of equivalent tie lines' capacities. This method is very widely used in the power industry, but the influence of the various approximations and assumptions, which are incorporated in this method, on reliability calculations has not been explored. The objective of the research work presented in this thesis is the development of a new method called Composite system based multi - area reliability model, which does multi - area reliability evaluation considering the whole composite system. It models the transmission system in detail and also takes into account the loss sharing policy within an area and no - load loss sharing policy among the areas. The proposed method is applied to standard IEEE 24 bus Reliability Test System (RTS) and the traditional equivalent tie-line method is applied to the multi-area configuration of the same test system. The results obtained by both the methods are analyzed and compared. It is found that the traditional model, although having some advantages, may not give accurate results.

Nagarajan, Ramya

2009-12-01T23:59:59.000Z

331

Transmission Reliability | Department of Energy  

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

Transmission Reliability Transmission Reliability Transmission Reliability Modernizing America's electricity infrastructure is one of the U.S. Department of Energy's top priorities. The DOE Strategic Plan states that today's electric grid needs to be more efficient, reliable, and secure. A modern, smarter electric grid may save consumers money, help our economy run more efficiently, allow rapid growth in renewable energy sources, and enhance energy reliability. The Department's research into a variety of tools that will improve advanced system monitoring, visualization, control, operations, and market structure will ultimately modernize the electricity transmission infrastructure to ease congestion, allow for increases in demand, and provide a greater degree of security. The Transmission Reliability Program is aligned with this strategic plan

332

Lithium battery safety and reliability  

DOE Green Energy (OSTI)

Lithium batteries have been used in a variety of applications for a number of years. As their use continues to grow, particularly in the consumer market, a greater emphasis needs to be placed on safety and reliability. There is a useful technique which can help to design cells and batteries having a greater degree of safety and higher reliability. This technique, known as fault tree analysis, can also be useful in determining the cause of unsafe behavior and poor reliability in existing designs.

Levy, S.C.

1991-01-01T23:59:59.000Z

333

INTEGRATING THE DESIGN AND RELIABILITY ASSESSMENT OF A HYBRID PV-THERMAL MICROCONCENTRATOR SYSTEM  

E-Print Network (OSTI)

INTEGRATING THE DESIGN AND RELIABILITY ASSESSMENT OF A HYBRID PV-THERMAL MICROCONCENTRATOR SYSTEM M that the materials from the power electronics industry are also reliable when used in a concentrator PV module and reliability testing have been integrated as concurrent processes, enabling the early optimisation

334

Reliability Results of NERSC Systems  

E-Print Network (OSTI)

of various systems at NERSC. They graciously provided meReliability Results of NERSC Systems Akbar Mokhtarani,William Kramer, Jason Hick NERSC - LBNL Abstract In order to

Mokhtarani, Akbar; Petascale Data Storage Institute (PDSI)

2008-01-01T23:59:59.000Z

335

Distribution Reliability Trends and Correlations  

Science Conference Proceedings (OSTI)

Distribution reliability statistics, which measure sustained interruptions, are the primary benchmark used by utilities and regulators to identify service quality and to measure performance.

2005-11-29T23:59:59.000Z

336

DURABILITY, RELIABILITY, AND SERVICE LIFE ...  

Science Conference Proceedings (OSTI)

Kaipeng Liu, Xiaohong Gu. In practical applications of PV solar cells, long-term weathering durability and reliable performance are essential. ...

337

Life cycle assessment of off-grid lighting applications : kerosene vs. solar lanterns  

E-Print Network (OSTI)

Access to electricity in developing countries is minimal and if available, often unreliable. As a result, fuel-based kerosene lighting is the most common solution to lighting necessities. However, kerosene combustion affects ...

Dave, Shreya H

2008-01-01T23:59:59.000Z

338

Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies  

E-Print Network (OSTI)

The Energy Sector Management Assistance Program (ESMAP) is a global technical assistance partnership administered by the World Bank since 1983 and sponsored by bilateral donors. ESMAP's mission is to promote the role of energy in poverty reduction and economic growth in an environmentally responsible manner. Its work applies to low-income, emerging, and transition economies and contributes to the achievement of internationally agreed development goals through knowledge products such as free technical assistance; specific studies; advisory services; pilot projects; knowledge generation and dissemination; training, workshops, and seminars; conferences and round-tables; and publications. The Program focuses on four key thematic areas: energy security, renewable energy, energy poverty, and market efficiency and governance. Governance and Operations ESMAP is governed by a Consultative Group (CG) composed of representatives of the World Bank, other donors, and development experts from regions that benefit from ESMAP assistance. The ESMAP CG is chaired by a World Bank Vice-President and advised by a Technical Advisory Group of independent energy experts that reviews the Program's strategic agenda, work plan, and achievements. ESMAP relies on a cadre of engineers, energy planners, and economists from the World Bank, and from the energy and development community at large, to conduct its activities.

unknown authors

2007-01-01T23:59:59.000Z

339

Market Trial: Selling Off-Grid Lighting Products in Rural Kenya  

E-Print Network (OSTI)

the products were battery capacity and mobile phone chargingthe Nova S100 had a battery capacity twice that of the Novato the Solata). The battery capacities ranged from 400 to

Tracy, Jennifer

2012-01-01T23:59:59.000Z

340

Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation  

E-Print Network (OSTI)

control because the industry assumed that power system operationsPower system operations planners conduct extensive studies to assess whether primary frequency controlcontrol is a fundamental requirement for reliable operation of any power system.

Eto, Joseph H.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Computer-Based Training Module - Plant Reliability Optimization  

Science Conference Proceedings (OSTI)

Plants seeking cost-effective ways to improve generating unit reliability need to establish best practices in each of five major maintenance processes: work identification, planning, scheduling, execution, and closeout. Implementing EPRI's Plant Reliability Optimization (PRO) processes, such as Maintenance Basis Optimization (MBO), Condition Based Maintenance (CBM), Predictive Maintenance (PdM), and Work Week Management (WwM), will result in the improvement of key power plant functional areas. This compu...

2008-12-23T23:59:59.000Z

342

Weather Normalization of Reliability Indices  

Science Conference Proceedings (OSTI)

Weather significantly increases variability of reliability indices. This project focuses on exploring statistical correlations between weather parameters and system performance indices using historical utility reliability data and weather data. Using this information, various approaches for normalizing utility performance indices for variability in weather can be developed.

2008-12-22T23:59:59.000Z

343

2004 Equipment Reliability Forum Proceedings  

Science Conference Proceedings (OSTI)

This report describes the proceedings of the EPRI 2004 Equipment Reliability Forum that was held September 1314, 2004, in Kansas City, Missouri. This annual forum provides an opportunity for industry personnel involved in equipment reliability and related issues to exchange information and share experiences. It is structured to incorporate both formal presentations and open discussion.

2004-11-30T23:59:59.000Z

344

Boiler Reliability Optimization: Interim Guideline  

Science Conference Proceedings (OSTI)

Competitive pressures to drive costs down in the new business environment sometimes conflict with the demands of increased reliability and quality of supply. The Boiler Reliability Optimization program, which makes use of a number of applicable EPRI technologies, was developed to assess, create, and implement an effective boiler maintenance strategy for the changing business environment.

1999-11-30T23:59:59.000Z

345

CERTS: Consortium for Electric Reliability Technology Solutions - Research Highlights  

Science Conference Proceedings (OSTI)

Historically, the U.S. electric power industry was vertically integrated, and utilities were responsible for system planning, operations, and reliability management. As the nation moves to a competitive market structure, these functions have been disaggregated, and no single entity is responsible for reliability management. As a result, new tools, technologies, systems, and management processes are needed to manage the reliability of the electricity grid. However, a number of simultaneous trends prevent electricity market participants from pursuing development of these reliability tools: utilities are preoccupied with restructuring their businesses, research funding has declined, and the formation of Independent System Operators (ISOs) and Regional Transmission Organizations (RTOs) to operate the grid means that control of transmission assets is separate from ownership of these assets; at the same time, business uncertainty, and changing regulatory policies have created a climate in which needed investment for transmission infrastructure and tools for reliability management has dried up. To address the resulting emerging gaps in reliability R&D, CERTS has undertaken much-needed public interest research on reliability technologies for the electricity grid. CERTS' vision is to: (1) Transform the electricity grid into an intelligent network that can sense and respond automatically to changing flows of power and emerging problems; (2) Enhance reliability management through market mechanisms, including transparency of real-time information on the status of the grid; (3) Empower customers to manage their energy use and reliability needs in response to real-time market price signals; and (4) Seamlessly integrate distributed technologies--including those for generation, storage, controls, and communications--to support the reliability needs of both the grid and individual customers.

Eto, Joseph

2003-07-30T23:59:59.000Z

346

Economic analysis of PV hybrid power system: Pinnacles National Monument  

DOE Green Energy (OSTI)

PV hybrid electric power systems can offer an economically competitive alternative to engine generator (genset) systems in many off-grid applications. Besides the obvious `green` advantages of producing less noise and emissions, the PV hybrid can, in some cases, offer a lower life-cycle cost (LCC) then the genset. This paper evaluates the LCC of the 9.6 kWp PV hybrid power system installed by the National Park Services (NPS) at Pinnacles National Monument, CA. NPS motivation for installation of this hybrid was not based on economics, but rather the need to replace two aging diesel gensets with an alternative that would be quieter, fuel efficient, and more in keeping with new NPS emphasis on sustainable design and operations. In fact, economic analysis shows a lower 20-year LCC for the installed PV hybrid than for simple replacement of the two gensets. The analysis projects are net savings by the PV hybrid system of $83,561 and over 162,000 gallons of propane when compared with the genset-only system. This net savings is independent of the costs associated with environmental emissions. The effects of including emissions costs, according to NPS guidelines, is also discussed. 5 refs., 2 figs., 3 tabs.

Rosenthal, A.; Durand, S. [Southwest Technology Development Institute, Las Cruces, NM (United States); Thomas, M.; Post, H. [Sandia National Labs., Albuquerque, NM (United States)

1997-11-01T23:59:59.000Z

347

Reliability-based design optimization using efficient global reliability analysis.  

Science Conference Proceedings (OSTI)

Finding the optimal (lightest, least expensive, etc.) design for an engineered component that meets or exceeds a specified level of reliability is a problem of obvious interest across a wide spectrum of engineering fields. Various methods for this reliability-based design optimization problem have been proposed. Unfortunately, this problem is rarely solved in practice because, regardless of the method used, solving the problem is too expensive or the final solution is too inaccurate to ensure that the reliability constraint is actually satisfied. This is especially true for engineering applications involving expensive, implicit, and possibly nonlinear performance functions (such as large finite element models). The Efficient Global Reliability Analysis method was recently introduced to improve both the accuracy and efficiency of reliability analysis for this type of performance function. This paper explores how this new reliability analysis method can be used in a design optimization context to create a method of sufficient accuracy and efficiency to enable the use of reliability-based design optimization as a practical design tool.

Bichon, Barron J. (Southwest Research Institute, San Antonio, TX); Mahadevan, Sankaran (Vanderbilt University, Nashville, TN); Eldred, Michael Scott

2010-05-01T23:59:59.000Z

348

North American Electric Reliability Corporation  

E-Print Network (OSTI)

Compliance filing regarding consistency of Western Electricity Coordinating Council (WECC) regional reliability Standard WECC-TOP-STD-007-0 with NERC reliability standard Dear Ms. Michael: On July 9, 2007, the North American Electric Reliability Corporation (NERC) filed an explanation regarding the consistency of WECCs regional reliability standard WECC-TOP-STD-007-0 with respect to NERC Reliability Standard IRO-005-1. Notice of this filing was issued on July 12, 2007 with comments, protests or motions to intervene due on or before August 8, 2007. Notices of intervention and unopposed timely filed motions to intervene are granted pursuant to the operation of Rule 214 of the Commissions Rules of Practice and Procedure (18 C.F.R. 385.214). Any opposed or untimely filed motion to intervene is governed by the provisions of Rule 214. No protests or adverse comments were filed.

Docket No. Rr

2007-01-01T23:59:59.000Z

349

Photovoltaic performance and reliability workshop  

DOE Green Energy (OSTI)

This workshop was the sixth in a series of workshops sponsored by NREL/DOE under the general subject of photovoltaic testing and reliability during the period 1986--1993. PV performance and PV reliability are at least as important as PV cost, if not more. In the US, PV manufacturers, DOE laboratories, electric utilities, and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in the field were brought together to exchange the technical knowledge and field experience as related to current information in this evolving field of PV reliability. The papers presented here reflect this effort since the last workshop held in September, 1992. The topics covered include: cell and module characterization, module and system testing, durability and reliability, system field experience, and standards and codes.

Mrig, L. [ed.

1993-12-01T23:59:59.000Z

350

Fatigue case study and reliability analyses for wind turbines  

DOE Green Energy (OSTI)

Modern wind turbines are fatigue critical machines used to produce electrical power. To insure long term, reliable operation, their structure must be optimized if they are to be economically viable. The fatigue and reliability projects in Sandia`s Wind Energy Program are developing the analysis tools required to accomplish these design requirements. The first section of the paper formulates the fatigue analysis of a wind turbine using a cumulative damage technique. The second section uses reliability analysis for quantifying the uncertainties and the inherent randomness associated with turbine performance and the prediction of service lifetimes. Both research areas are highlighted with typical results.

Sutherland, H.J.; Veers, P.S.

1994-12-31T23:59:59.000Z

351

Transmission Reliability Evaluation of Large Scale System (TRELSS) Software, Version 6.0  

Science Conference Proceedings (OSTI)

TRELSS, Version 6.0 has been upgraded recently. The TRELSS code simulates power transmission systems and allows the reliability of the modeled system to be accurately estimated. TRELSS computes reliability indices using a contingency enumeration approach, which involves selection and evaluation of contingencies, classification of each contingency according to specified failure criteria, and accumulation of reliability indices. Two methods of reliability assessment are used: the System Problem Approach (w...

2003-03-18T23:59:59.000Z

352

Strategic and Flexible Transmission Planning: Balancing Reliability and Economics in Transmission Planning  

Science Conference Proceedings (OSTI)

Projects that improve reliability can also improve economics and vice versa. The challenge is in achieving the reliability goals with as much economic benefit as possible, that is, to balance the reliability and economic goals without compromising either. A method to balance the reliability and economic needs when planning transmission is outlined here with examples given for its usage.BackgroundThe goal of bulk power system planning is to ensure that ...

2013-08-30T23:59:59.000Z

353

Premium Power Industrial Park Design  

Science Conference Proceedings (OSTI)

This report is intended to provide insights on the consideration, design, and implementation of power quality (PQ) parks -- business parks where superb electric power quality, reliability, and availability (QRA) are optimized for the businesses within the park.

2002-02-14T23:59:59.000Z

354

NREL: Gearbox Reliability Collaborative - About the Gearbox Reliability  

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

About the Gearbox Reliability Collaborative About the Gearbox Reliability Collaborative Premature gearbox failures have a significant impact on the cost of wind farm operations. In 2007, NREL initiated the Gearbox Reliability Collaborative (GRC). The project combines field testing, dynamometer testing, analysis, modeling, condition monitoring, development of a failure database, and operations and maintenance research in a multi-pronged approach to determine why wind turbine gearboxes do not always achieve their expected design life-the time period that manufacturers expect them to last. The collaborative of manufacturers, owners, operators, researchers, and consultants focuses on gearbox modeling and testing and the development of a gearbox failure database. Collaborative members also investigate gearbox

355

Browse wiki | Open Energy Information  

Open Energy Info (EERE)

firm that provides off-grid solar power to telecom towers. It builds and operates solar installations and takes over the power supply management of each site. + , Delhi...

356

Electricity Reliability Council of Texas (ERCOT) | Open Energy Information  

Open Energy Info (EERE)

Electricity Reliability Council of Texas (ERCOT) Electricity Reliability Council of Texas (ERCOT) Jump to: navigation, search The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power to 22 million Texas customers - representing 85 percent of the state's electric load and 75 percent of the Texas land area. As the independent system operator for the region, ERCOT schedules power on an electric grid that connects 40,000 miles of transmission lines and more than 550 generation units. ERCOT also manages financial settlement for the competitive wholesale bulk-power market and administers customer switching for 6.5 million Texans in competitive choice areas. News ERCOT gathers wind data from cellphone towers References ERCOT This article incorporates public domain material from the document:

357

Inherently Reliable Boiler Component Design  

Science Conference Proceedings (OSTI)

This report summarizes the lessons learned during the last decade in efforts to improve the reliability and availability of boilers used in the production of electricity. The information in this report can assist in component modifications and new boiler designs.

2003-03-31T23:59:59.000Z

358

Photovoltaics performance and reliability workshop  

DOE Green Energy (OSTI)

This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

Mrig, L. [ed.] [ed.

1992-11-01T23:59:59.000Z

359

Photovoltaics performance and reliability workshop  

DOE Green Energy (OSTI)

This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

Mrig, L. (ed.) [ed.

1992-01-01T23:59:59.000Z

360

A reliability and mass perspective of SP-100 Stirling cycle lunar-base powerplant designs  

SciTech Connect

The purpose was to obtain reliability and mass perspectives on selection of space power system conceptual designs based on SP-100 reactor and Stirling cycle power-generation subsystems. The approach taken was to: (1) develop a criterion for an acceptable overall reliability risk as a function of the expected range of emerging technology subsystem unit reliabilities; (2) conduct reliability and mass analyses for a diverse matrix of 800-kWe lunar-base design configurations employing single and multiple powerplants with both full and partial subsystem redundancy combinations; and (3) derive reliability and mass perspectives on selection of conceptual design configurations that meet an acceptable reliability criterion with the minimum system mass increase relative to reference powerplant design. The developed perspectives provided valuable insight into the considerations required to identify and characterize high-reliability and low-mass lunar-base powerplant conceptual design.

Bloomfield, H.S.

1991-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Increased Power Flow Guidebook  

Science Conference Proceedings (OSTI)

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

2005-11-16T23:59:59.000Z

362

HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear  

National Nuclear Security Administration (NNSA)

HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear Security Summit: Fact Sheet | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > HEU Minimization and the Reliable Supply of ... Fact Sheet HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear

363

Petition of the North American Electric Reliability Corporation for  

E-Print Network (OSTI)

(NERC) submitted a filing seeking FERC approval of an interpretation of Reliability Standards CIP-001-1 Cyber Security Sabotage Reporting, Requirement R2. 2. This filing is in accordance with 18 C.F.R. 39.5 and Section 215(d)(1) of the Federal Power Act, which allows the Electric Reliability Organization to file a modification to a reliability standard with FERC for approval. No modification to the language contained in this specific requirement is being proposed through the interpretation. The filing consists of the developed interpretation, the Reliability Standards CIP-001-1 which includes the appended interpretation, a complete development record of the interpretation, and a roster of the interpretation development team. 3. This interpretation was approved by the NERC Board of Trustees February 16, 2010. The interpretation requested clarification of the appropriate parties to whom RCs, BAs, TOs, GOs and LSEs must communicate information concerning sabotage events. The interpretation states that the term refers collectively to

Rebecca J. Michael

2011-01-01T23:59:59.000Z

364

An Overview of the Reliability and Availability Data System (RADS)  

SciTech Connect

The Reliability and Availability Data System (RADS) is a database and analysis code, developed by the Idaho National Engineering and Environmental Laboratory (INEEL) for the U.S. Nuclear Regulatory Commission (USNRC). The code is designed to estimate industry and plant-specific reliability and availability parameters for selected components in risk-important systems and initiating events for use in risk-informed applications. The RADS tool contains data and information based on actual operating experience from U.S. commercial nuclear power plants. The data contained in RADS is kept up-to-date by loading the most current quarter's Equipment Performance and Information Exchange (EPIX) data and by yearly lods of initiating event data from licensee event reports (LERS). The reliability parameters estimated by RADS are (1) probability of failure on demand, (2) failure rate during operation (used to calculate failure to run probability) and (3) time trends in reliability parameters.

T. E. Wierman; K. J. Kvarfordt; S. A. Eide; D. M. Rasmuson

2005-09-01T23:59:59.000Z

365

Distribution System Reliability Practices: Noteworthy Practices at DTE Electric  

Science Conference Proceedings (OSTI)

In 2010, EPRI initiated a multiyear effort to identify and illustrate noteworthy practices that utilities are using to meet the service reliability expectations of their customers. EPRI research focused on four host utilities: Ameren Corporation, Central Hudson Gas & Electric Corporation, Alabama Power Company, and We Energies. In 2011, EPRI completed research at American Electric Power Company (AEP) and initiated research with Memphis Light, Gas and Water (MLGW) and Duke Energy. In 2012, ...

2013-04-16T23:59:59.000Z

366

Distribution System Reliability Practices: Noteworthy Practices at Nashville Electric Service  

Science Conference Proceedings (OSTI)

In 2010, EPRI initiated a multiyear effort to identify and illustrate noteworthy practices that utilities are using to meet the service reliability expectations of their customers. EPRI research focused on four host utilities: Ameren Corporation, Central Hudson Gas & Electric Corporation, Alabama Power Company, and We Energies. In 2011, EPRI completed research at American Electric Power Company (AEP) and initiated research with Memphis Light, Gas and Water (MLGW) and Duke Energy. In 2012, EPRI ...

2013-10-29T23:59:59.000Z

367

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

368

A technique for early software reliability prediction  

Science Conference Proceedings (OSTI)

In early developmental stages of software, failure data is not available to determine the reliability of software. But developers need reliability prediction for quality assessment and resource planning. We propose a model based on Reliability Block ...

Rakesh Tripathi; Rajib Mall

2005-12-01T23:59:59.000Z

369

Integrating reliability analysis and diagnostics for complex technical systems  

E-Print Network (OSTI)

ignored or repeated by engineers creating diagnostics. The current paper explains the basic concepts (with the consequence that a device would be powered when it should not be). 3. Failure. For a complexIntegrating reliability analysis and diagnostics for complex technical systems N A Snooke and C J

Snooke, Neal

370

Towards Reliable Smart Microgrid Behavior Using Runtime Model Synthesis  

Science Conference Proceedings (OSTI)

The dominant paradigm of centralized power generation, characterized by heavy transmission losses, is being slowly replaced by the smart micro grid, which promises the proliferation of renewable and distributed energy sources. Micro grid reliability ... Keywords: High Assurance, Model-Driven Development, Model Management, Microgrid, SmartGrid, Runtime Models

Mark Allison; Karl A. Morris; Zhenyu Yang; Peter J. Clarke; Fabio M. Costa

2012-10-01T23:59:59.000Z

371

AMENDED AND RESTATED DELEGATION AGREEMENT BETWEEN NORTH AMERICAN ELECTRIC RELIABILITY CORPORATION AND TEXAS RELIABILITY ENTITY, INC. AMENDED AND RESTATED DELEGATION AGREEMENT (Agreement) made  

E-Print Network (OSTI)

an organization certified by the Federal Energy Regulatory Commission (Commission) pursuant to Section 215(c) of the Federal Power Act to establish and enforce Reliability Standards for the Bulk-Power System, and Texas Reliability Entity, Inc. (Texas RE) , an organization established to develop and enforce Reliability Standards within the geographic boundaries identified on Exhibit A to this Agreement, and for other purposes. NERC and Texas RE may be individually referred to herein as Party or collectively as Parties. WITNESSETH WHEREAS, Subtitle A of the Electricity Modernization Act of 2005 added Section 215 to the Federal Power Act (16 U.S.C. 824n) (hereafter the Act), which, among other things, provides for the establishment of an electric reliability organization (ERO) to develop and enforce Reliability Standards applicable to all owners, operators, and users of the Bulk-Power System; WHEREAS, the Commission has adopted regulations for the implementation of the Act, which are set forth at Chapter I, Title 18, Code of Federal Regulations, Part 39 (the ERO Regulations); WHEREAS, the Commission has certified NERC as the ERO that will, in accordance with the Act, establish and enforce Reliability Standards for the Bulk-Power System, subject to certain delegation provisions described below; WHEREAS, the Act recognizes the international interdependency of electric reliability within North America and envisions the ERO and such applicable Regional Entities as international organizations;

unknown authors

2011-01-01T23:59:59.000Z

372

Electronic reliability estimation: how reliable are the results?  

Science Conference Proceedings (OSTI)

The development of Safety Critical Systems requires the compliance to several safety standards and regulations. Since, most of the times, human life is at stake, it is crucial to fully understand the behaviour of the system being developed in order to ... Keywords: MIL-Hdbk-217F, MTTF, estimation, reliability

Nuno Silva; Rui Lopes

2012-09-01T23:59:59.000Z

373

Electricity & Energy Reliability (WFP) | Department of Energy  

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

Electricity & Energy Reliability (WFP) Electricity & Energy Reliability (WFP) The purpose of the workforce Plan is to provide focus and direction to Human Resources (HR) strategy....

374

Demand Response as a System Reliability Resource  

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

Demand Response as a System Reliability Resource Title Demand Response as a System Reliability Resource Publication Type Report Year of Publication 2012 Authors Eto, Joseph H.,...

375

Comments of North American Electric Reliability Corporation ...  

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

American Electric Reliability Corporation (NERC) to DOE Smart Grid RFI: Addressing Policy and Logistical Challenges Comments of North American Electric Reliability Corporation...

376

Information Concerning Reliability Impacts under Various System...  

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

Information Concerning Reliability Impacts under Various System Configurations of the Mirant Potomac River Plant Information Concerning Reliability Impacts under Various System...

377

Maximal Reliability for Unit-weighted Composites  

E-Print Network (OSTI)

Maximal Reliability for Unit-weighted Composites Peter M.Maximal Reliability for Unit-weighted Composites Althoughconsistency coefficient for a unit-weighted composite. The

Peter M. Bentler

2011-01-01T23:59:59.000Z

378

Reliability Technology earns prestigious Los Alamos award  

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

Reliability Technology earns award Reliability Technology earns prestigious Los Alamos award LANL has honored Michael Hamada, Harry Martz and a team of researchers with its first...

379

FIELD RELIABILITY OF ELECTRONIC SYSTEMS  

E-Print Network (OSTI)

.1.1. Description (Nuclear Plant Experiences) (Ref. Nuclear Power Experiences, Volumes PWR-2 and BWP-2 random pattern or in an end-of-life cycle. #12;- 12 - Table 1. Nuclear power plant instrumentation faults amount of thermal gradients, on the unit. After the change in temperature, the unit is kept under power

380

Impact of Elasticity in Domestic Appliances on Aggregate Residential Power Demands.  

E-Print Network (OSTI)

??Power grids in today's developed societies are designed to meet consumer demands in a highly reliable manner. In order to guarantee reliability to consumers, the (more)

Srikantha, Pirathayini

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Electricity Delivery and Energy Reliability  

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

The Office of Electricity Delivery and Energy Reliability (OE) drives electric grid modernization and resiliency in the energy infrastructure while working to enable innovation across the energy sector, empowering American consumers, and securing our energy future. The OE mission and the leadership role OE plays in the energy industry directly support the President's effort to accelerate the transformation of America's energy system

382

Exceptional situations and program reliability  

Science Conference Proceedings (OSTI)

It is difficult to write programs that behave correctly in the presence of run-time errors. Proper behavior in the face of exceptional situations is important to the reliability of long-running programs. Existing programming language features often provide ... Keywords: Error handling, compensating transactions, linear sagas, linear types, resource management

Westley Weimer; George C. Necula

2008-03-01T23:59:59.000Z

383

Wind turbine reliability database update.  

SciTech Connect

This report documents the status of the Sandia National Laboratories' Wind Plant Reliability Database. Included in this report are updates on the form and contents of the Database, which stems from a fivestep process of data partnerships, data definition and transfer, data formatting and normalization, analysis, and reporting. Selected observations are also reported.

Peters, Valerie A.; Hill, Roger Ray; Stinebaugh, Jennifer A.; Veers, Paul S.

2009-03-01T23:59:59.000Z

384

Photovoltaic performance and reliability workshop  

DOE Green Energy (OSTI)

This proceedings is the compilation of papers presented at the ninth PV Performance and Reliability Workshop held at the Sheraton Denver West Hotel on September 4--6, 1996. This years workshop included presentations from 25 speakers and had over 100 attendees. All of the presentations that were given are included in this proceedings. Topics of the papers included: defining service lifetime and developing models for PV module lifetime; examining and determining failure and degradation mechanisms in PV modules; combining IEEE/IEC/UL testing procedures; AC module performance and reliability testing; inverter reliability/qualification testing; standardization of utility interconnect requirements for PV systems; need activities to separate variables by testing individual components of PV systems (e.g. cells, modules, batteries, inverters,charge controllers) for individual reliability and then test them in actual system configurations; more results reported from field experience on modules, inverters, batteries, and charge controllers from field deployed PV systems; and system certification and standardized testing for stand-alone and grid-tied systems.

Kroposki, B.

1996-10-01T23:59:59.000Z

385

Achieving Extreme Efficiency: How to get the job done when energy...  

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

in buildings or vehicles that generate their own power, such as military forward bases, disaster response centers, remote, off-grid sites, and hospitals or other critical...

386

Vestesen A S formerly Danvest Energy | Open Energy Information  

Open Energy Info (EERE)

Wind energy Product Vestesen (formerly known as Danvest Energy) provides hybrid power (wind-diesel) solutions for remote off-grid applications. References Vestesen AS (formerly...

387

GTC Breakout Session Smart Controls Motivation  

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

electronic systems Using existing data to perform predictive analytics (e.g., off grid data that impacts grid dynamics) Two-way power flow - setting metrics for...

388

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Security Regions of Electrical Power Systems, ProceedingsSecurity Regions of Electrical Power Systems by PowerSecurity Regions of Electrical Power Systems by Power

Eto, Joe

2008-01-01T23:59:59.000Z

389

Advanced nonlinear control of complex power systems.  

E-Print Network (OSTI)

??Nowadays, advanced controller design is called upon to guarantee the secure and reliable operation of power systems. To meet this requirement, this work proposed three (more)

Li, Hong Yin.

2008-01-01T23:59:59.000Z

390

Microsoft PowerPoint - Mission.ppt  

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

Administration's mission is to market and reliably deliver Federal hydroelectric power with preference to public bodies and cooperatives. This is accomplished by maximizing the use...

391

The 4 times 6 network; Reliability enhancement aspects  

SciTech Connect

The 4 {times} 6 network switching scheme for high voltage power switching and for distribution switching applications has been described in two earlier papers and in four patent publications. These papers have emphasized the significant reductions in equipment quantities and ratings which can be realized in many applications. The emphasis in this paper is the application of the 4 {times} 6 power switching concept for reliability enhancement and improved quality of power delivery, exemplified by direct comparison with traditional schemes. Further information on cost benefits is also included.

Page, R.; Nishikawara, K.; Stromotich, F. (Substation Planning Associates, West Vancover (CA))

1990-07-01T23:59:59.000Z

392

HUMAN RELIABILITY ANALYSIS FOR COMPUTERIZED PROCEDURES  

SciTech Connect

This paper provides a characterization of human reliability analysis (HRA) issues for computerized procedures in nuclear power plant control rooms. It is beyond the scope of this paper to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper provides a review of HRA as applied to traditional paper-based procedures, followed by a discussion of what specific factors should additionally be considered in HRAs for computerized procedures. Performance shaping factors and failure modes unique to computerized procedures are highlighted. Since there is no definitive guide to HRA for paper-based procedures, this paper also serves to clarify the existing guidance on paper-based procedures before delving into the unique aspects of computerized procedures.

Ronald L. Boring; David I. Gertman; Katya Le Blanc

2011-09-01T23:59:59.000Z

393

Reliable Gas Turbine Output: Attaining Temperature Independent Performance  

E-Print Network (OSTI)

Improvements in gas turbine efficiency, coupled with dropping gas prices, has made gas turbines a popular choice of utilities to supply peaking as well as base load power in the form of combined cycle power plants. Today, because of the gas turbine's compactness, low maintenance, and high levels of availability, it is the major option for future power generation. One inherent disadvantage of gas turbines is the degradation of output as the ambient air temperature increases. This reduction in output during times of peak load create a reliability concern as more gas turbines are added to the electric system. A 10% reduction in gas turbine output, when it comprises only 10% of the electric system, does not cause reliability concerns. A 10% reduction in gas turbine output, when it comprises 50% of the electric system, could create reliability and operational problems. This paper explores the potential for maintaining constant, reliable outputs from gas turbines by cooling ambient air temperatures before the air is used in the compressor section of the gas turbine.

Neeley, J. E.; Patton, S.; Holder, F.

1992-04-01T23:59:59.000Z

394

Defining Requirements for Improved Photovoltaic System Reliability  

DOE Green Energy (OSTI)

Reliable systems are an essential ingredient of any technology progressing toward commercial maturity and large-scale deployment. This paper defines reliability as meeting system fictional requirements, and then develops a framework to understand and quantify photovoltaic system reliability based on initial and ongoing costs and system value. The core elements necessary to achieve reliable PV systems are reviewed. These include appropriate system design, satisfactory component reliability, and proper installation and servicing. Reliability status, key issues, and present needs in system reliability are summarized for four application sectors.

Maish, A.B.

1998-12-21T23:59:59.000Z

395

Reliability and Availability of Gas Turbines and Combined-Cycle Plants  

Science Conference Proceedings (OSTI)

High reliability, availability, and maintainability (RAM) of gas turbine plants are important attributes affecting the cost of generating electricity. RAM performance is a key indicator of the certainty that the power plant can deliver the electricity required to the grid when needed. Furthermore, events affecting reliability, availability, and starting reliability directly influence the profitability of the plant, equity return to the owner, and ultimately the price consumers pay for generation. Changes...

2008-12-01T23:59:59.000Z

396

Life Prediction Using Reliability Analyses  

Science Conference Proceedings (OSTI)

...Turbine (CSGT) program for electric power cogeneration. Both CARES/86, Ref 48 is the support and development of advanced heat engines and

397

An examination of reliability critical items in liquid metal reactors: An analysis by the Centralized Reliability Data Organization (CREDO)  

SciTech Connect

The Centralized Reliability Data Organization (CREDO) is the largest repository of liquid metal reactor (LMR) component reliability data in the world. It is jointly sponsored by the US Department of Energy (DOE) and the Power Reactor and Nuclear Fuel Development Corporation (PNC) of Japan. The CREDO data base contains information on a population of more than 21,000 components and approximately 1300 event records. A conservative estimation is that the total component operating hours is approaching 3.5 billion hours. Because data gathering for CREDO concentrates on event (failure) information, the work reported here focuses on the reliability information contained in CREDO and the development of reliability critical items lists. That is, components are ranked in prioritized lists from worst to best performers from a reliability standpoint. For the data contained in the CREDO data base, FFTF and JOYO show reliability growth; EBR-II reveals a slight unreliability growth for those components tracked by CREDO. However, tabulations of events which cause reactor shutdowns decrease with time at each site.

Humphrys, B.L.; Haire, M.J.; Koger, K.H.; Manneschmidt, J.F.; Setoguchi, K.; Nakai, R.; Okubo, Y.

1987-01-01T23:59:59.000Z

398

Gearbox Reliability Collaborative Bearing Calibration  

DOE Green Energy (OSTI)

NREL has initiated the Gearbox Reliability Collaborative (GRC) to investigate the root cause of the low wind turbine gearbox reliability. The GRC follows a multi-pronged approach based on a collaborative of manufacturers, owners, researchers and consultants. The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearbox failure database. At the core of the project are two 750kW gearboxes that have been redesigned and rebuilt so that they are representative of the multi-megawatt gearbox topology currently used in the industry. These gearboxes are heavily instrumented and are tested in the field and on the dynamometer. This report discusses the bearing calibrations of the gearboxes.

van Dam, J.

2011-10-01T23:59:59.000Z

399

Emerging Grid Reliability Improvement Technologies  

Science Conference Proceedings (OSTI)

The initial phase of a planned comprehensive Eastern Interconnection (EI) segmentation study is complete. As part of the preparations for completion of the EI study, and to carry out a similar effort for the Western Interconnection (WI), it was necessary to first investigate the potential of other technologies to compete with segmentation. This report discusses emerging grid reliability improvement technologies, providing a perspective on the pros and cons of segmentation, the grid shock absorber concept...

2007-10-29T23:59:59.000Z

400

Circuit design of a novel adaptable and reliable L1 data cache  

Science Conference Proceedings (OSTI)

This paper proposes a novel adaptable and reliable L1 data cache design (Adapcache) with the unique capability of automatically adapting itself for different supply voltage levels and providing the highest reliability. Depending on the supply voltage ... Keywords: cache design, fault tolerance, low power design

Azam Seyedi; Gulay Yalcin; Osman S. Unsal; Adrian Cristal

2013-05-01T23:59:59.000Z

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


401

A Review of the Reliability of Electric Distribution System Components: EPRI White Paper  

Science Conference Proceedings (OSTI)

This report discusses available literature, data, and models related to the reliability of electric power distribution system components and discusses the influence of environmental factors and testing results on component reliability. It also critiques the value of this information for value of service studies.

2001-12-13T23:59:59.000Z

402

Materials Reliability Program: Pressurized Water Reactor Internals Aging Management Program Development Template (MRP-342)  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) Materials Reliability Program (MRP) has completed and published guidance for managing the effects of aging degradation in pressurized water reactor (PWR) internals. The initial version of this report, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines (MRP-227, Revision 0), was submitted to the staff of the U. S. Nuclear Regulatory Commission (NRC) ...

2012-10-23T23:59:59.000Z

403

Investigation of an Emergency Diesel Generator Reliability Program, A Case Study of Crystal River Unit 3  

Science Conference Proceedings (OSTI)

The Florida Power Corporation Crystal River nuclear station has markedly improved emergency diesel generator (EDG) reliability at its Unit 3 reactor. Analysis of plant activities that contributed to this improvement demonstrates the effectiveness of applying practical EDG reliability programs and confirms the usefulness of proposed EPRI guidelines for such programs.

1989-01-26T23:59:59.000Z

404

North American Electricity Infrastructure: System Security, Quality, Reliability, Availability, and Efficiency  

E-Print Network (OSTI)

1 North American Electricity Infrastructure: System Security, Quality, Reliability, Availability for reliable and disturbance-free electricity. The massive power outages in the United States, Canada, UK and Italy in 2003 underscored electricity infrastructure's vulnerabilities [1-11]. This vital yet complex

Amin, S. Massoud

405

RELIABILITY OF WIND POWER FROM DISPERSED SITES: A PRELIMINARY ASSESSMENT  

E-Print Network (OSTI)

SFO SCK RBL II SOB .1I0 SAC SFO SCK SMX RBL :s: z ::r: r tTlGJ tTl (flr n tTl <.N (fl (fl Z .j::. n f-< March BFL SAC SFO SCK SMX

Kahn, E.

2011-01-01T23:59:59.000Z

406

AEO2011: Electric Power Projections for EMM Region - Reliability...  

Open Energy Info (EERE)

unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category.
...

407

AEO2011: Electric Power Projections for EMM Region - SERC Reliability  

Open Energy Info (EERE)

unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category.
...

408

ASEO2011: Electric Power Projections for EMM Region - SERC Reliability  

Open Energy Info (EERE)

unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category.
...

409

A chronological probabilistic production cost model to evaluate the reliability contribution of limited energy plants  

E-Print Network (OSTI)

The growth of renewables in power systems has reinvigorated research and regulatory interest in reliability analysis algorithms such as the Baleriaux/Booth convolution-based probabilistic production cost (PPC) model. ...

Leung, Tommy (Tommy Chun Ting)

2012-01-01T23:59:59.000Z

410

Understanding the cost of power interruptions to U.S. electricity consumers  

E-Print Network (OSTI)

2004. Pilot Evaluation of Electricity-Reliability and Power-in the Economic Value of Electricity Reliability to the U.S.of the economic value of electricity reliability, the U.S.

LaCommare, Kristina Hamachi; Eto, Joseph H.

2004-01-01T23:59:59.000Z

411

DAKOTA reliability methods applied to RAVEN/RELAP-7.  

SciTech Connect

This report summarizes the result of a NEAMS project focused on the use of reliability methods within the RAVEN and RELAP-7 software framework for assessing failure probabilities as part of probabilistic risk assessment for nuclear power plants. RAVEN is a software tool under development at the Idaho National Laboratory that acts as the control logic driver and post-processing tool for the newly developed Thermal-Hydraulic code RELAP-7. Dakota is a software tool developed at Sandia National Laboratories containing optimization, sensitivity analysis, and uncertainty quantification algorithms. Reliability methods are algorithms which transform the uncertainty problem to an optimization problem to solve for the failure probability, given uncertainty on problem inputs and a failure threshold on an output response. The goal of this work is to demonstrate the use of reliability methods in Dakota with RAVEN/RELAP-7. These capabilities are demonstrated on a demonstration of a Station Blackout analysis of a simplified Pressurized Water Reactor (PWR).

Swiler, Laura Painton; Mandelli, Diego [Idaho National Laboratory, Idaho Falls, ID; Rabiti, Cristian [Idaho National Laboratory, Idaho Falls, ID; Alfonsi, Andrea [Idaho National Laboratory, Idaho Falls, ID

2013-09-01T23:59:59.000Z

412

Cyber Effects Analysis Using VCSE Promoting Control System Reliability |  

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

Cyber Effects Analysis Using VCSE Promoting Control System Cyber Effects Analysis Using VCSE Promoting Control System Reliability Cyber Effects Analysis Using VCSE Promoting Control System Reliability This report describes the Virtual Control System Environment (VCSE) technology- developed at Sandia National Laboratories-to investigate Supervisory Control And Data Acquisition (SCADA) vulnerabilities associated with energy systems; and it describes a set of experiments with findings from using that environment. The report explains how VCSE can be used to analyze and develop an understanding of cyber attacks. Specific analyses in this report focus on unencrypted, unsecured data channels on Internet protocol (IP)-routed computer networks within electric power systems. Cyber Effects Analysis Using VCSE Promoting Control System Reliability

413

OPPORTUNITIES FOR STUDENT INTERNS/RECENT GRADUATES SOUTHWESTERN POWER ADMINISTRATION  

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

RELIABILITY COMPLIANCE & TRANSMISSION POLICY RELIABILITY COMPLIANCE & TRANSMISSION POLICY OFFICE OF CORPORATE OPERATIONS ELECTRICAL, MECHANICAL, OR INDUSTRIAL ENGINEER Apply at www.usajobs.gov About the Division of Reliability Compliance and Transmission Policy: The Division of Reliability Compliance and Transmission Policy is the lead division in ensuring Southwestern is compliant with North American Electric Reliability Corporation (NERC) Reliability Standards and Federal Energy Regulatory Commission (FERC) open access transmission service policies in areas such as: * transmission system operation * balancing authority operations * hydropower operations * power system disturbance investigation * power system protective relaying * transmission system planning * power system maintenance functions

414

The Demand Component of Electric Service: Linkages to Service Reliability and Need for Transparency  

Science Conference Proceedings (OSTI)

This white paper distinguishes the demand component of electric service (measured in kilowatts)distinct from the energy component (measured in kilowatthours)and emphasizes the need for power demand cost transparency. Customers' experience with electric service reliability is described in terms of continuity of electric service, availability of service, and restoration time after service interruption. The paper discusses the connection between power demand and electric service reliability, as experienced ...

2012-08-03T23:59:59.000Z

415

Program on Technology Innovation: Information Integration for Equipment Reliability at Nuclear Plants  

Science Conference Proceedings (OSTI)

This report investigates the status of information integration for equipment reliability (ER) at nuclear power plants. ER consists of a comprehensive set of processes that span the organization and require extensive data gathering, retrieval, and information integration. To assist nuclear operators, the Institute of Nuclear Power Operations (INPO) issued AP-913, Equipment Reliability Process Description, as a standard approach to implement effective ER processes among its members. Despite the success tha...

2009-04-30T23:59:59.000Z

416

Reliability-Centered Maintenance | Department of Energy  

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

Reliability-Centered Maintenance Reliability-Centered Maintenance Reliability-Centered Maintenance October 7, 2013 - 9:48am Addthis Reliability-centered maintenance leverages the same practices and technologies of predictive maintenance. The difference is that reliability-centered maintenance recognizes that: Equipment design and operations differ Different equipment has different probabilities of failure All equipment is not of equal importance to facility operations Facilities have limited financial and personnel resources. While reliability-centered maintenance relies on predictive maintenance practices and technologies, it also recognizes that maintenance on inexpensive and/or unimportant equipment may be better served by a reactive or predictive maintenance approach. Each of the aforementioned factors are

417

NREL: Wind Research - Gearbox Reliability Collaborative  

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

Research Research Search More Search Options Site Map Premature gearbox failures have a significant impact on the cost of wind farm operations. In 2007, NREL initiated the Gearbox Reliability Collaborative (GRC). The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearbox failure database in a multi-pronged approach to determine why many wind turbine gearboxes do not achieve their expected design life-the time period that manufacturers expect them to last. Read about: The Gearbox Reliability Collaborative Gearbox Reliability Collaborative Projects Gearbox Reliability Collaborative Research and Development Working with the Gearbox Reliability Collaborative Gearbox Reliability Collaborative Publications

418

Microgrids and Heterogeneous Security, Quality, Reliability, and Availability  

E-Print Network (OSTI)

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

Marnay, Chris

2007-01-01T23:59:59.000Z

419

Puget Sound Area Electric Reliability Plan : Draft Environmental Impact State.  

Science Conference Proceedings (OSTI)

The Puget Sound Area Electric Reliability Plan Draft Environmental Impact Statement (DEIS) identifies the alternatives for solving a power system problem in the Puget Sound area. This Plan is undertaken by Bonneville Power Administration (BPA), Puget Sound Power Light, Seattle City Light, Snohomish Public Utility District No. 1 (PUD), and Tacoma Public Utilities. The Plan consists of potential actions in Puget Sound and other areas in the State of Washington. A specific need exists in the Puget Sound area for balance between east-west transmission capacity and the increasing demand to import power generated east of the Cascades. At certain times of the year, there is more demand for power than the electric system can supply in the Puget Sound area. This high demand, called peak demand, occurs during the winter months when unusually cold weather increases electricity use for heating. The existing power system can supply enough power if no emergencies occur. However, during emergencies, the system will not operate properly. As demand grows, the system becomes more strained. To meet demand, the rate of growth of demand must be reduced or the ability to serve the demand must be increased, or both. The plan to balance Puget Sound's power demand and supply has these purposes: The plan should define a set of actions that would accommodate ten years of load growth (1994--2003). Federal and State environmental quality requirements should be met. The plan should be consistent with the plans of the Northwest Power Planning Council. The plan should serve as a consensus guideline for coordinated utility action. The plan should be flexible to accommodate uncertainties and differing utility needs. The plan should balance environmental impacts and economic costs. The plan should provide electric system reliability consistent with customer expectations. 29 figs., 24 tabs.

United States. Bonneville Power Administration.

1991-09-01T23:59:59.000Z

420

Puget Sound area electric reliability plan. Draft environmental impact statement  

SciTech Connect

The Puget Sound Area Electric Reliability Plan Draft Environmental Impact Statement (DEIS) identifies the alternatives for solving a power system problem in the Puget Sound area. This Plan is undertaken by Bonneville Power Administration (BPA), Puget Sound Power & Light, Seattle City Light, Snohomish Public Utility District No. 1 (PUD), and Tacoma Public Utilities. The Plan consists of potential actions in Puget Sound and other areas in the State of Washington. A specific need exists in the Puget Sound area for balance between east-west transmission capacity and the increasing demand to import power generated east of the Cascades. At certain times of the year, there is more demand for power than the electric system can supply in the Puget Sound area. This high demand, called peak demand, occurs during the winter months when unusually cold weather increases electricity use for heating. The existing power system can supply enough power if no emergencies occur. However, during emergencies, the system will not operate properly. As demand grows, the system becomes more strained. To meet demand, the rate of growth of demand must be reduced or the ability to serve the demand must be increased, or both. The plan to balance Puget Sound`s power demand and supply has these purposes: The plan should define a set of actions that would accommodate ten years of load growth (1994--2003). Federal and State environmental quality requirements should be met. The plan should be consistent with the plans of the Northwest Power Planning Council. The plan should serve as a consensus guideline for coordinated utility action. The plan should be flexible to accommodate uncertainties and differing utility needs. The plan should balance environmental impacts and economic costs. The plan should provide electric system reliability consistent with customer expectations. 29 figs., 24 tabs.

Not Available

1991-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Definition: Regional Reliability Plan | Open Energy Information  

Open Energy Info (EERE)

reliability Coordinator References Glossary of Terms Used in Reliability Standards An i LikeLike UnlikeLike You like this.Sign Up to see what your friends like. nline...

422

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

transmission planning to evaluate future needs under different assumptions for resource availability,transmission operators depend on to ensure system reliability. The assumption of availabilitytransmission operators depend on to ensure system reliability. The assumption of traditional governor availability

Eto, Joe

2008-01-01T23:59:59.000Z

423

NREL: Performance and Reliability R&D - Photovoltaic Performance and  

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

Photovoltaic Performance and Reliability Workshops Photovoltaic Performance and Reliability Workshops NREL hosts workshops focused on photovoltaic (PV) performance and reliability to encourage collaboration and communication among solar program staff, national laboratory teams, and industry partners. Workshop summaries and presentation content are available for the following meetings. Solar Power International Workshops on Bankability October 21, 2013 NREL and Sandia National Laboratories (SNL) hosted two workshops during Solar Power International 2013 to discuss strategies for defining the bankability of new PV products. A detailed agenda is available. In addition, workshop presentations from the morning session are available for download. Today's Qualification Tests and Testing Beyond These-John Wohlgemuth, NREL

424

Review of Quantitative Software Reliability Methods  

Science Conference Proceedings (OSTI)

The current U.S. Nuclear Regulatory Commission (NRC) licensing process for digital systems rests on deterministic engineering criteria. In its 1995 probabilistic risk assessment (PRA) policy statement, the Commission encouraged the use of PRA technology in all regulatory matters to the extent supported by the state-of-the-art in PRA methods and data. Although many activities have been completed in the area of risk-informed regulation, the risk-informed analysis process for digital systems has not yet been satisfactorily developed. Since digital instrumentation and control (I&C) systems are expected to play an increasingly important role in nuclear power plant (NPP) safety, the NRC established a digital system research plan that defines a coherent set of research programs to support its regulatory needs. One of the research programs included in the NRC's digital system research plan addresses risk assessment methods and data for digital systems. Digital I&C systems have some unique characteristics, such as using software, and may have different failure causes and/or modes than analog I&C systems; hence, their incorporation into NPP PRAs entails special challenges. The objective of the NRC's digital system risk research is to identify and develop methods, analytical tools, and regulatory guidance for (1) including models of digital systems into NPP PRAs, and (2) using information on the risks of digital systems to support the NRC's risk-informed licensing and oversight activities. For several years, Brookhaven National Laboratory (BNL) has worked on NRC projects to investigate methods and tools for the probabilistic modeling of digital systems, as documented mainly in NUREG/CR-6962 and NUREG/CR-6997. However, the scope of this research principally focused on hardware failures, with limited reviews of software failure experience and software reliability methods. NRC also sponsored research at the Ohio State University investigating the modeling of digital systems using dynamic PRA methods. These efforts, documented in NUREG/CR-6901, NUREG/CR-6942, and NUREG/CR-6985, included a functional representation of the system's software but did not explicitly address failure modes caused by software defects or by inadequate design requirements. An important identified research need is to establish a commonly accepted basis for incorporating the behavior of software into digital I&C system reliability models for use in PRAs. To address this need, BNL is exploring the inclusion of software failures into the reliability models of digital I&C systems, such that their contribution to the risk of the associated NPP can be assessed.

Chu, T.L.; Yue, M.; Martinez-Guridi, M.; Lehner, J.

2010-09-17T23:59:59.000Z

425

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

426

EPRI Switching Safety and Reliability Reference Book: Second Edition  

Science Conference Proceedings (OSTI)

Switching operations in electric power systems must be performed safely to avoid injury to workers who perform the operations, and to minimize the possibility of unscheduled outages or equipment damage due to erroneous switching.This report is the second edition of the EPRI Switching Safety and Reliability Reference Book. The book, known as the Black Book, joins the EPRI Color Book series of valuable reference ...

2013-12-18T23:59:59.000Z

427

EPRI Switching Safety and Reliability Reference Book: First Edition  

Science Conference Proceedings (OSTI)

Switching operations in electric power systems must be performed safely to avoid injury to the workers who perform the operations and to minimize the possibility of unscheduled outages or equipment damage due to erroneous switching.This report is the first edition of the EPRI Switching Safety and Reliability Reference Book. The book, known as the Black Book, joins the EPRI Color Book series of reference materials. Additional chapters of the EPRI Switching ...

2013-02-25T23:59:59.000Z

428

Network and System Management for Reliability and Cyber Security  

Science Conference Proceedings (OSTI)

The evolving control of the electric power grid is increasingly dependent on information technology and telecommunication infrastructures, which, like the grid itself, must be managed in a holistic way to ensure reliability and security. The management of this information infrastructure requires connectivity and analytics to support both information technology (IT) and operational technology (OT) assets in a unified manner.This project utilized a telecommunications modeled network ...

2012-11-28T23:59:59.000Z

429

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

430

Template for Performing Human Reliability Analyses: Lesson Plans  

Science Conference Proceedings (OSTI)

Probabilistic safety analyses (PSA) incorporate human reliability assessment (HRA) to account for possible errors by a nuclear power plant operating crew both prior to and during postulated accidents. Studies have shown that human errors are a large contributor to the likelihood of such accidents; today, the nuclear industry is acutely aware of its importance. A cadre of experts has developed HRA technology by applying it in many risk studies. Examples are reported in the literature. These lesson plans p...

2002-06-07T23:59:59.000Z

431

Reliability Challenges for Solar Energy (Presentation)  

DOE Green Energy (OSTI)

Presentation that reviews reliability issues related to various types of photovoltaic tecnnologies, including crystalline silicon, thin films, and concentrating PV.

Kurtz, S.

2009-12-08T23:59:59.000Z

432

Mathematical Reliability Theory: From The Beginning to . . .  

E-Print Network (OSTI)

It is argued that the mathematical theory of reliability as a separate discipline began in 1961 with the publication of Multi-component systems and their structures and their reliability by Birnbaum, Esary and Saunders. Prior to this time, mathematicians were just applying standard mathematical techniques such as queueing theory, statistics and probability to engineering reliability problems. We

Richard E. Barlow

2002-01-01T23:59:59.000Z

433

Streamlined Reliability Centered Maintenance Analysis Application Update  

Science Conference Proceedings (OSTI)

A systematic evaluation of plant equipment and maintenance requirements using reliability centered maintenance (RCM) techniques can help hold down operating costs while maintaining plant availability and reliability. This report describes the application of streamlined reliability centered maintenance (streamlined RCM) methodology and software at four utilities.

2001-10-18T23:59:59.000Z

434

Puget Sound Area Electric Reliability Plan : Final Environmental Impact Statement.  

SciTech Connect

A specific need exists in the Puget Sound area for balance between east-west transmission capacity and the increasing demand to import power generated east of the Cascades. At certain times of the year, and during certain conditions, there is more demand for power in the Puget Sound area than the transmission system and existing generation can reliably supply. This high demand, called peak demand occurs during the winter months when unusually cold weather increases electricity use for heating. The existing power system can supply enough power if no emergencies occur. However, during emergencies the system will not operate properly. As demand grows, the system becomes more strained. To meet demand, the rate of growth of demand must be reduced or the ability to serve the demand must be increased, or both.

United States. Bonneville Power Administration.

1992-04-01T23:59:59.000Z

435

A FRAMEWORK FOR ASSESSING THE RELIABILITY OF WIND ENERGY CONVERSION SYSTEMS  

E-Print Network (OSTI)

During the last decade, wind power generation has seen rapid development. According to the U.S. Department of Energy, achieving 20 % wind power penetration in the U.S. by 2030 will require: (i) enhancement of the transmission infrastructure, (ii) improvement of reliability and operability of wind systems and (iii) increased U.S. manufacturing capacity of wind generation equipment. This research will concentrate on improvement of reliability and operability of wind energy conversion systems (WECSs). The increased penetration of wind energy into the grid imposes new operating conditions on power systems. This change requires development of an adequate reliability framework. This thesis proposes a framework for assessing WECS reliability in the face of external disturbances, e.g., grid faults and internal component faults. The framework is illustrated using a detailed model of type C WECS- doubly fed induction generator with corresponding deterministic and random variables in a simplified grid model. Fault parameters and performance requirements essential to

Sebastian S?awomir Smater

2009-01-01T23:59:59.000Z

436

Wind/hybrid power system test facilities in the United States and Canada  

SciTech Connect

By 1995, there will be four facilities available for testing of wind/hybrid power systems in the United States and Canada. This paper describes the mission, approach, capabilities, and status of activity at each of these facilities. These facilities have in common a focus on power systems for remote, off-grid locations that include wind energy. At the same time, these facilities have diverse, yet complimentary, missions that range from research to technology development to testing. The first facility is the test facility at the Institut de Recherche d`Hydro-Quebec (IREQ), Hydro-Quebec`s research institute near Montreal, Canada. This facility, not currently in operation, was used for initial experiments demonstrating the dynamic stability of a high penetration, no-storage wind/diesel (HPNSWD) concept. The second facility is located at the Atlantic Wind Test Site (AWTS) on Prince Edward Island, Canada, where testing of the HPNSWD concept developed by Hydro-Quebec is currently underway. The third is the Hybrid Power Test Facility planned for the National Wind Technology Center at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, which will focus on testing commercially available hybrid power systems. The fourth is the US Department of Agriculture (USDA) Conservation and Production Research Laboratory in Bushland, Texas, where a test laboratory is being developed to study wind-energy penetration and control strategies for wind/hybrid systems. The authors recognize that this summary of test facilities is not all inclusive; for example, at least one US industrial facility is currently testing a hybrid power system. Our intent, though, is to describe four facilities owned by nonprofit or governmental institutions in North America that are or will be available for ongoing development of wind/hybrid power systems.

Green, H J [National Renewable Energy Lab., Golden, CO (United States); Clark, R N [USDA Conservation and Production Research Laboratory, Bushland, TX (United States); Brothers, C [Atlantic Wind Test Site, North Cape, PE (Canada); Saulnier, B [Institut de Recherche d`Hydro-Quebec, Varennes, PQ (Canada)

1994-05-01T23:59:59.000Z

437

A Reliable Natural Language Interface  

E-Print Network (OSTI)

As household appliances grow in complexity and sophistication, they become harder and harder to use, particularly because of their tiny display screens and limited keyboards. This paper describes a strategy for building natural language interfaces to appliances that circumvents these problems. Our approach leverages decades of research on planning and natural language interfaces to databases by reducing the appliance problem to the database problem; the reduction provably maintains desirable properties of the database interface. The paper goes on to describe the implementation and evaluation of the EXACT interface to appliances, which is based on this reduction. EXACT maps each English user request to an SQL query, which is transformed to create a PDDL goal, and uses the Blackbox planner [13] to map the planning problem to a sequence of appliance commands that satisfy the original request. Both theoretical arguments and experimental evaluation show that EXACT is highly reliable.

To Household Appliances; Alexander Yates

2003-01-01T23:59:59.000Z

438

Internal Compliance Program for Approved North American Electric Reliability Corporation and Regional Reliability Standards: A Guide to Compliance for Fossil Generators  

Science Conference Proceedings (OSTI)

The purpose of this report is to provide guidance to generator owner and operator members of the Electric Power Research Institute in complying with the North American Electric Reliability Corporations (NERCs) mandatory reliability standards. Included here are the standards and associated requirements applicable to generator owners and operators who have registered with their regional entity, along with guidance on how successful compliance has been achieved.This report ...

2012-12-20T23:59:59.000Z

439

Increased Power Flow Guidebook - 2012  

Science Conference Proceedings (OSTI)

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

2012-12-31T23:59:59.000Z

440

Grid Shunt Reactive Power Compensation  

Science Conference Proceedings (OSTI)

This report provides essential information on transmission grid shunt reactive power compensation, with particular focus on controllable reactive power sources such as the static var controller (SVC). Applying the information presented in this report can help electric utilities planning grid shunt reactive power compensation strategies or operating shunt reactive power compensation equipment to increase grid reliability, improve grid performance and prevent costly cascading outages. The report is intende...

2008-11-26T23:59:59.000Z

Note: This page contains sample records for the topic "reliable off-grid power" 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

Increased Power Flow Guidebook - 2013  

Science Conference Proceedings (OSTI)

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

2013-11-18T23:59:59.000Z

442

An Examination of Temporal Trends in Electricity Reliability Based on Reports from U.S. Electric Utilities  

SciTech Connect

Since the 1960s, the U.S. electric power system has experienced a major blackout about once every 10 years. Each has been a vivid reminder of the importance society places on the continuous availability of electricity and has led to calls for changes to enhance reliability. At the root of these calls are judgments about what reliability is worth and how much should be paid to ensure it. In principle, comprehensive information on the actual reliability of the electric power system and on how proposed changes would affect reliability ought to help inform these judgments. Yet, comprehensive, national-scale information on the reliability of the U.S. electric power system is lacking. This report helps to address this information gap by assessing trends in U.S. electricity reliability based on information reported by electric utilities on power interruptions experienced by their customers. Our research augments prior investigations, which focused only on power interruptions originating in the bulk power system, by considering interruptions originating both from the bulk power system and from within local distribution systems. Our research also accounts for differences among utility reliability reporting practices by employing statistical techniques that remove the influence of these differences on the trends that we identify. The research analyzes up to 10 years of electricity reliability information collected from 155 U.S. electric utilities, which together account for roughly 50% of total U.S. electricity sales. The questions analyzed include: 1. Are there trends in reported electricity reliability over time? 2. How are trends in reported electricity reliability affected by the installation or upgrade of an automated outage management system? 3. How are trends in reported electricity reliability affected by the use of IEEE Standard 1366-2003?

Eto, Joseph H.; LaCommare, Kristina Hamachi; Larsen, Peter; Todd, Annika; Fisher, Emily

2012-01-06T23:59:59.000Z

443

Definition: Reliability Coordinator Information System | Open Energy  

Open Energy Info (EERE)

Reliability Coordinator Information System Reliability Coordinator Information System Jump to: navigation, search Dictionary.png Reliability Coordinator Information System The system that Reliability Coordinators use to post messages and share operating information in real time.[1] Related Terms Reliability Coordinator References ↑ Glossary of Terms Used in Reliability Standards An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Reliability_Coordinator_Information_System&oldid=480407" Categories: Definitions ISGAN Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load)

444

Market Manual 11: Reliability Compliance Part 11.3: Reliability  

E-Print Network (OSTI)

A catalogue of the information that is to be shared between the IESO and Market Participants in relation to maintaining the reliability of the IESO-controlled grid Public Disclaimer The posting of documents on this Web site is done for the convenience of market participants and other interested visitors to the IESO Web site. Please be advised that, while the IESO attempts to have all posted documents conform to the original, changes can result from the original, including changes resulting from the programs used to format the documents for posting on the Web site as well as from the programs used by the viewer to download and read the documents. The IESO makes no representation or warranty, express or implied, that the documents on this Web site are exact reproductions of the original documents listed. In addition, the documents and information posted on this Web site are subject to change. The IESO may revise, withdraw or make final these materials at any time at its sole discretion without further notice. It is solely your responsibility to ensure that you are using up-to-date documents and information. This document may contain a summary of a particular market rule. Where provided, the summary has

Information Catalogue

2013-01-01T23:59:59.000Z

445

Understanding Premium Power Grades: Final Report  

Science Conference Proceedings (OSTI)

For many utility customers, quality of power has become as important as reliability of power, and providing this required quality serves as the basis of a premium power offering. This report addresses the key technical and economic issues related to premium power grades that utilities, regulators, and end users need to understand to make informed decisions.

2000-11-17T23:59:59.000Z

446

Design and implementation of a dc/dc resonant converter for power system applications.  

E-Print Network (OSTI)

??In modern power system, the energy conversion includes a large number of the energy processors, and demands high quality, small, lightweight, reliable and efficient power (more)

Fazel Darbandi, Arash

2013-01-01T23:59:59.000Z

447

NETL: News Release - DOE Sets Target Date to Launch Power Plant...  

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

January 22, 2001 DOE Sets Target Date to Launch Power Plant Improvement Initiative Major Emphasis is to Strengthen Reliability of Nation's Power System with Improved Coal-Based...

448

FABRICATION AND TESTING OF A NONSTANDARD THIN-FILM HEAT FLUX SENSOR FOR POWER SYSTEM APPLICATIONS.  

E-Print Network (OSTI)

??Stirling convertors are being operated by NASA Glenn Research Center for many years to demonstrate a Radioisotope Power System (RPS) capable of providing reliable power (more)

Wilson, Scott Dean

2011-01-01T23:59:59.000Z

449

Managing Reliability in the 21st Century  

SciTech Connect

The rapid pace of change at Ike end of the 20th Century should continue unabated well into the 21st Century. The driver will be the marketplace imperative of "faster, better, cheaper." This imperative has already stimulated a revolution-in-engineering in design and manufacturing. In contrast, to date, reliability engineering has not undergone a similar level of change. It is critical that we implement a corresponding revolution-in-reliability-engineering as we enter the new millennium. If we are still using 20th Century reliability approaches in the 21st Century, then reliability issues will be the limiting factor in faster, better, and cheaper. At the heart of this reliability revolution will be a science-based approach to reliability engineering. Science-based reliability will enable building-in reliability, application-specific products, virtual qualification, and predictive maintenance. The purpose of this paper is to stimulate a dialogue on the future of reliability engineering. We will try to gaze into the crystal ball and predict some key issues that will drive reliability programs in the new millennium. In the 21st Century, we will demand more of our reliability programs. We will need the ability to make accurate reliability predictions that will enable optimizing cost, performance and time-to-market to meet the needs of every market segment. We will require that all of these new capabilities be in place prior to the stint of a product development cycle. The management of reliability programs will be driven by quantifiable metrics of value added to the organization business objectives.

Dellin, T.A.

1998-11-23T23:59:59.000Z

450

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

investment. References Electric Power Research Institute andstability analysis of electric power systems using energyNavin Bhatt (American Electric Power) Participants of the

Eto, Joe

2008-01-01T23:59:59.000Z

451

CERTS 2012 Program Review - Automatic Reliability Reports (ARR...  

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

prototype at MISO: Architecture, Grid Monitoring Visualization and Grid Reliability Tracking Grid Automatic Reliability Report (GARR) Page 1 Automatic Reliability Reports (ARR)...

452

Global Nuclear Energy Partnership Fact Sheet - Establish Reliable...  

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

Establish Reliable Fuel Services Global Nuclear Energy Partnership Fact Sheet - Establish Reliable Fuel Services GNEP would build and strengthen a reliable international fuel...

453

Electricity Delivery and Energy Reliability | Department of Energy  

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

Electricity Delivery and Energy Reliability Electricity Delivery and Energy Reliability information about the delivery of electricity and energy reliability Electricity Delivery...

454

Fatigue reliability of wind turbine components  

DOE Green Energy (OSTI)

Fatigue life estimates for wind turbine components can be extremely variable due to both inherently random and uncertain parameters. A structural reliability analysis is used to qualify the probability that the fatigue life will fall short of a selected target. Reliability analysis also produces measures of the relative importance of the various sources of uncertainty and the sensitivity of the reliability to each input parameter. The process of obtaining reliability estimates is briefly outlined. An example fatigue reliability calculation for a blade joint is formulated; reliability estimates, importance factors, and sensitivities are produced. Guidance in selecting distribution functions for the random variables used to model the random and uncertain parameters is also provided. 5 refs., 9 figs., 1 tab.

Veers, P.S.

1990-01-01T23:59:59.000Z

455

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Advances in Power System Control, Operation and ManagementAdvances in Power System Control, Operation and ManagementPower System Small Signal Stability Analysis, Fourth International Conference on Advances in Power System Control, Operation

Eto, Joe

2008-01-01T23:59:59.000Z

456

Energy Efficiency and Reliability in Wireless Biomedical Implant Systems  

E-Print Network (OSTI)

The use of wireless implant technology requires correct delivery of the vital physiological signs of the patient along with the energy management in power-constrained devices. Toward these goals, we present an augmentation protocol for the physical layer of the Medical Implant Communications Service (MICS) with focus on the energy efficiency of deployed devices over the MICS frequency band. The present protocol uses the rateless code with the Frequency Shift Keying (FSK) modulation scheme to overcome the reliability and power cost concerns in tiny implantable sensors due to the considerable attenuation of propagated signals across the human body. In addition, the protocol allows a fast start-up time for the transceiver circuitry. The main advantage of using rateless codes is to provide an inherent adaptive duty-cycling for power management, due to the flexibility of the rateless code rate. Analytical results demonstrate that an 80% energy saving is achievable with the proposed protocol when compared to the IE...

Abouei, Jamshid; Plataniotis, Konstantinos N; Pasupathy, Subbarayan

2011-01-01T23:59:59.000Z

457

Office of Electricity Delivery and Energy Reliability  

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

Comments of Cisco Systems to Office of Electricity Delivery and Energy Reliability Department of Energy in Response to Request for Information: Addressing Policy and Logistical...

458

Definition: Transmission Reliability | Open Energy Information  

Open Energy Info (EERE)

to ensure reliable system operation as system conditions change.1 Related Terms transmission lines, transfer capability, system, transmission line References Glossary...

459

Real Time Grid Reliability Management 2005  

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

period, the traditional approach to reliability management - construction of new transmission lines - has not been pursued due to unresolved issues related to the...

460

Information Concerning Reliability Impacts under Various System...  

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

Impacts under Various System Configurations of the Mirant Potomac River Plant Information Concerning Reliability Impacts under Various System Configurations of the Mirant...

Note: This page contains sample records for the topic "reliable off-grid power" 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

design and reliability of solder interconnections  

Science Conference Proceedings (OSTI)

X. Wu, K. Hu, X. Dou, G. Mui, C.-P. Yeh and K. Wyatt. Combined ... Reliability Considerations When Choosing Water Soluble Flux for Electronic Assembly [pp.

462

Mechanical Reliability Study on Porous Brittle Materials  

Science Conference Proceedings (OSTI)

Presentation Title, Mechanical Reliability Study on Porous Brittle Materials. Author(s), Xiaofeng Fan, Eldon D Case, Fei Ren, Yutian Shu, Melissa J Baumann .

463

Improving Wind Turbine Gearbox Reliability: Preprint  

DOE Green Energy (OSTI)

This paper describes a new research and development initiative to improve gearbox reliability in wind turbines begun at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, USA.

Musial, W.; Butterfield, S.; McNiff, B.

2007-06-01T23:59:59.000Z

464

Handbook of Alternative Technologies for Substation Emergency Power  

Science Conference Proceedings (OSTI)

Emergency power systems in electric substations play a critical role in substation reliability. This handbook characterizes backup power systems that offer high reliability, measurable capacity, and low maintenance for substation backup power applications. The handbook discusses better application of existing energy storage technologies as well as new technologies not yet commonly used in these applications. Reliability is the most important success criterion, while better condition monitoring and simpli...

2005-08-31T23:59:59.000Z

465

Reliability and Maintainability Issues for the Next Linear Collider  

Science Conference Proceedings (OSTI)

Large accelerators for high energy physics research traditionally have been designed using informal best design, engineering, and management practices to achieve acceptable levels of operational availability. However, the Next Linear Collider(NLC) project presents a particular challenge for operational availability due to the unprecedented size and complexity of the accelerator systems required to achieve the physics goals of high center-of-mass energy and high luminosity. Formal reliability and maintainability analysis, design, and implementation will be required to achieve acceptable operational availability for the high energy physics research program. This paper introduces some of the basic concepts of reliability analysis and applies them to the 2.6-cm microwave power system of the two 10-km-long, 250-GeV linacs that are currently proposed for the NLC design.

Wilson, Zane J.; Gold, Saul L.; Koontz, Ron F.; Lavine, Ted L.; /SLAC

2011-08-26T23:59:59.000Z

466

Qualitative Reliability Issues for Solid and Liquid Wall Fusion Designs  

SciTech Connect

This report is an initial effort to identify issues affecting reliability and availability of solid and liquid wall designs for magnetic fusion power plant designs. A qualitative approach has been used to identify the possible failure modes of major system components and their effects on the systems. A general set of design attributes known to affect the service reliability has been examined for the overview solid and liquid wall designs, and some specific features of good first wall design have been discussed and applied to these designs as well. The two generalized designs compare well in regard to these design attributes. The strengths and weaknesses of each design approach are seen in the comparison of specific features.

Cadwallader, L.C.

2001-01-31T23:59:59.000Z

467

Qualitative Reliability Issues for Solid and Liquid Wall Fusion Design  

Science Conference Proceedings (OSTI)

This report is an initial effort to identify issues affecting reliability and availability of solid and liquid wall designs for magnetic fusion power plant designs. A qualitative approach has been used to identify the possible failure modes of major system components and their effects on the systems. A general set of design attributes known to affect the service reliability has been examined for the overview solid and liquid wall designs, and some specific features of good first wall design have been discussed and applied to these designs as well. The two generalized designs compare well in regard to these design attributes. The strengths and weaknesses of each design approach are seen in the comparison of specific features.

Cadwallader, Lee Charles

2001-01-01T23:59:59.000Z

468

Utility-scale grid-tied PV inverter reliability workshop summary report.  

DOE Green Energy (OSTI)

A key to the long-term success of the photovoltaic (PV) industry is confidence in the reliability of PV systems. Inverters are the most commonly noted cause of PV system incidents triggered in the field. While not all of these incidents are reliability-related or even necessarily failures, they still result in a loss of generated power. With support from the U.S. Department of Energy's Solar Energy Technologies Program, Sandia National Laboratories organized a Utility-Scale Grid-Tied Inverter Reliability Workshop in Albuquerque, New Mexico, January 27-28, 2011. The workshop addressed the reliability of large (100-kilowatt+) grid-tied inverters and the implications when such inverters fail, evaluated inverter codes and standards, and provided discussion about opportunities to enhance inverter reliability. This report summarizes discussions and presentations from the workshop and identifies opportunities for future efforts.

Granata, Jennifer E.; Quintana, Michael A.; Tasca, Coryne Adelle (SRA International, Inc., Fairfax, VA); Atcitty, Stanley

2011-07-01T23:59:59.000Z

469

Utility-scale grid-tied PV inverter reliability workshop summary report.  

SciTech Connect

A key to the long-term success of the photovoltaic (PV) industry is confidence in the reliability of PV systems. Inverters are the most commonly noted cause of PV system incidents triggered in the field. While not all of these incidents are reliability-related or even necessarily failures, they still result in a loss of generated power. With support from the U.S. Department of Energy's Solar Energy Technologies Program, Sandia National Laboratories organized a Utility-Scale Grid-Tied Inverter Reliability Workshop in Albuquerque, New Mexico, January 27-28, 2011. The workshop addressed the reliability of large (100-kilowatt+) grid-tied inverters and the implications when such inverters fail, evaluated inverter codes and standards, and provided discussion about opportunities to enhance inverter reliability. This report summarizes discussions and presentations from the workshop and identifies opportunities for future efforts.

Granata, Jennifer E.; Quintana, Michael A.; Tasca, Coryne Adelle (SRA International, Inc., Fairfax, VA); Atcitty, Stanley

2011-07-01T23:59:59.000Z

470

Magnetically Controlled Reactor Shrinks Power Quality Costs and...  

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

ensures less than 2-3% main harmonic distortion even without special filters. Transformer-like construction ensures reliable operation. MCR's increase power quality through...

471

Water and Power Conservation _.. a way of life  

Science Conference Proceedings (OSTI)

... denial of service, financial loss, or legal ... with reliability of the transmission network, generally including ... As provided in Federal Power Act Section ...

2013-04-10T23:59:59.000Z

472

Demand response can lower electric power load when needed - Today ...  

U.S. Energy Information Administration (EIA)

February 15, 2011 Demand response can lower electric power load when needed . Consumers can play a major role in ensuring reliable electricity supply by reducing ...

473

Case Study - Florida Power & Light - Smart Grid Solutions Strengthen...  

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

Florida Power & Light July 2012 1 Smart devices have been installed on 78 substation transformer banks. Smart Grid Solutions Strengthen Electric Reliability and Customer Services...

474

STATEMENT OF CONSIDERATIONS REQUEST BY SIEMENS WESTINGHOUSE POWER...  

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

of improved reliability availability and maintainability (RAM) of existing and advanced gas turbine power plants by continuously monitoring the health of critical thermal barrier...

475

Electric Power Acronyms and Definitions - Sierra Nevada Region  

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

of the ISO transmission grid. Responsible for providing non-discriminatory access to the power grid, managing congestion, maintaining grid reliability and security, and providing...

476

Fuel Reliability Program: Global Nuclear Fuel Priority 1 Fuel Inspections Results Assessment Report  

Science Conference Proceedings (OSTI)

In an effort to meet the recommendations of the Electric Power Research Institute (EPRI) report 1015032, Fuel Reliability Guidelines: Fuel Surveillance and Inspection, Global Nuclear Fuel (GNF) worked with the Fuel Reliability Program (FRP) and utilities to assign an inspection prioritization ranking to the GNF-fueled U.S. BWR fleet and conducted and completed a series of fuel inspections from 2007 to 2009 at the highest priority plants. Summary presentations of the inspection results were presented at E...

2011-05-12T23:59:59.000Z

477

California Electricity Restructuring: The Challenge to Providing Service and Grid Reliability  

Science Conference Proceedings (OSTI)

Download report 1007388 for FREE. For all the attention devoted to the California energy crisis, the challenge restructuring posed to the reliability of the electricity generation, transmission, and distribution system has largely been overlooked. Reliability, often treated as just another good to be traded, is often taken for granted even though an uninterrupted power supply, the fundamental precondition of the energy market, depends on the determined, real time efforts of professionals in the control r...

2002-12-04T23:59:59.000Z

478

Assessment of EPRI Fuel Reliability Guidelines for New Nuclear Plant Designs  

Science Conference Proceedings (OSTI)

As the nuclear power industry pursues the licensing, construction and operation of new advanced LWR designs to meet growing electrical demand, a high level of fuel reliability will be a key factor in the ultimate acceptance and sustainability of these new plants. The new reactor designs under consideration by the industry will utilize fuel assembly/rod designs and operating conditions that are similar to the current fleet. This report assesses the applicability of the EPRI Fuel Reliability Program (FRP) ...

2009-12-09T23:59:59.000Z

479

NREL: Gearbox Reliability Collaborative - Working with the Gearbox...  

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

Technology Deployment Energy Systems Integration Gearbox Reliability Collaborative Wind Research Wind Gearbox Reliability Collaborative Search More Search Options Site Map...

480

Ris-R-1235(EN) Reliability Databases  

E-Print Network (OSTI)

.4 Standard models of reliability MIL-HDBK-217 MIL-HDBK-217 was the original standard for reliability-wide. The most recent revision of MIL-HDBK- 217 is Revision F Notice 2, which was released in February of 1995. MIL-HDBK-217 includes the ability to perform a 'parts count' analysis or a 'part stress' analysis

Note: This page contains sample records for the topic "reliable off-grid power" 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

Exploratory Reliability and Performance R&D  

DOE Green Energy (OSTI)

This paper presents a brief overview of the status and accomplishments during fiscal year (FY) 2005 of the Photovoltaic (PV) Exploratory Reliability and Performance R&D Subtask, which is part of the PV Module Reliability R&D Project (a joint NREL-Sandia project).

Osterwald, C. R.

2005-11-01T23:59:59.000Z

482

Engineering Reliability into Web Sites: Google SRE  

E-Print Network (OSTI)

Engineering Reliability into Web Sites: Google SRE Alex Perry alex.perry@google.com Santa Monica SRE, Google #12;Abstract This talk introduces Site Reliability Engineering (SRE) at Google, explaining, Santa Monica, Dublin and Kirkland manage Google's many services and websites. They draw upon the Linux

Cortes, Corinna

483

Exact bounds for average pairwise network reliability  

Science Conference Proceedings (OSTI)

Several methods for finding exact bounds of average pairwise network connectivity (APNC) are proposed. These methods allows faster decision making about if a network is reliable for its purpose. Previous results on cumulitive updating of all-terminal ... Keywords: algorithm, network reliability, pairwise connectivity

Alexey Rodionov; Olga Rodionova

2013-01-01T23:59:59.000Z

484

NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering the cost of energy.  

E-Print Network (OSTI)

NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering have been able to identify shortcomings in the design, testing, and operation of wind turbines findings are quickly shared among GRC participants, including many wind turbine manufacturers and equipment

485

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

for Small Businesses in Kenya Kristen Radecsky*, Petermany people and businesses in Kenya who participated in thisin two small towns in Kenyas Rift Valley Province. The work

Radecsky, Kristen

2009-01-01T23:59:59.000Z

486

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

the Energy and Water Department of the World Bank (Lightingthe Energy and Water Department of the World Bank. Lightingthe Energy and Water Department of the World Bank, available

Radecsky, Kristen

2009-01-01T23:59:59.000Z

487

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

Lantern) Electric (LED Array) Electric (CFL Bulb) Maai MahiuLED Array) Maai Mahiu Maai Mahiu & Karagita Combined Electric (CFL Bulb)

Radecsky, Kristen

2009-01-01T23:59:59.000Z

488

Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market  

E-Print Network (OSTI)

30), 477-499. Efficient Lighting Initiative. 2004. Lighting Energy Bill, Internationalfor Energy-Efficient Lighting and Lawrence Berkeley National

Tracy, Jennifer

2010-01-01T23:59:59.000Z

489

Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market  

E-Print Network (OSTI)

included measurements of battery capacity, time required tothe measured battery capacity was 30-50% lower than theas much as 22% for battery capacity measurements, 3.6% for

Tracy, Jennifer

2010-01-01T23:59:59.000Z

490

Solid-State Lighting on a Shoestring Budget: The Economics of Off-Grid Lighting for Small Businesses in Kenya  

E-Print Network (OSTI)

the ampere-hour capacity of the battery. 2 A larger batteryincreasing the capacity of the battery. This is true becauseincreasing the capacity of the battery. The most desirable

Radecsky, Kristen

2009-01-01T23:59:59.000Z

491

SIMULATED BUILDING ENERGY PERFORMANCE OF SINGLE-FAMILY DETACHED RESIDENCES DESIGNED FOR OFF-GRID, OFF-PIPE OPERATION  

SciTech Connect

This paper presents the analysis of energy performance of single-family detached homes in three U.S. climates, in order to determine energy-efficiency measures for minimizing the loads and sizing requirements of renewable energy systems that are essential for its offgrid, off-pipe (i.e., utility-independent) operation. The analysis used a DOE-2.1e simulation model of a 2000/2001 IECC (International Energy Conservation Code) standard house as a base case in three climate locations: Minneapolis, MN, Atlanta, GA, and Phoenix, AZ. This selection of measures and determination of loads for renewable energy systems were accomplished by analyzing the energy use using DOE-2.1e simulations and heating/cooling load components using the Manual J Average Load Procedure. The analysis showed several aspects of building energy performance during different times of the year in terms of available energy resources that are critical for the sizing, utilization, and cost effectiveness of renewable energy systems.

Malhotra, Mini [ORNL; Haberl, Dr. Jeff S. [Texas A& M University

2010-01-01T23:59:59.000Z

492

Information Concerning Reliability Impacts under Various System  

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

Information Concerning Reliability Impacts under Various System Information Concerning Reliability Impacts under Various System Configurations of the Mirant Potomac River Plant Information Concerning Reliability Impacts under Various System Configurations of the Mirant Potomac River Plant Docket No. EO-05-01: PJM Interconnection, L.L.C. and PEPCO Holdings, Inc. is hereby providing you with additional information concerning reliability impacts under various system conditions associated with the unavailability of the Potomac River Generating Station to serve load in the D.C. area. Also enclosed as part of this submittal is material provided by PEPCO (balance of sentence redacted) In addition, there is a discussion concerning the impacts of demand side response in addressing this situation. Information Concerning Reliability Impacts under Various System

493

Reliability First Corporation | OpenEI  

Open Energy Info (EERE)

Reliability First Corporation Reliability First Corporation Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 110, and contains only the reference case. The dataset uses gigawatts, billion kilowatthours and quadrillion Btu. The data is broken down into generating capacity, electricity generation and energy consumption. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO EIA Gateway Reliability First Corporation SERC Reliability Corporation Data application/vnd.ms-excel icon AEO2011:Renewable Energy Generation by Fuel - SERC Reliability Corporation / Gateway- Reference Case (xls, 118.9 KiB) Quality Metrics Level of Review Peer Reviewed

494

Definition: Reliability Coordinator Area | Open Energy Information  

Open Energy Info (EERE)

Coordinator Area Coordinator Area Jump to: navigation, search Dictionary.png Reliability Coordinator Area The collection of generation, transmission, and loads within the boundaries of the Reliability Coordinator. Its boundary coincides with one or more Balancing Authority Areas.[1] Related Terms transmission lines, Reliability Coordinator, Balancing Authority Area, transmission line, balancing authority, smart grid References ↑ Glossary of Terms Used in Reliability Standards An inlin LikeLike UnlikeLike You like this.Sign Up to see what your friends like. e Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Reliability_Coordinator_Area&oldid=502626" Categories: Definitions ISGAN Definitions What links here Related changes Special pages

495

Inventing the future of reliability: FERC's recent orders and the consolidation of reliability authority  

Science Conference Proceedings (OSTI)

The Energy Policy Act of 2005 established mandatory reliability standard enforcement under a system in which the Federal Energy Regulatory Commission and the Electric Reliability Organization would have their own spheres of responsibility and authority. Recent orders, however, reflect the Commission's frustration with the reliability standard drafting process and suggest that the Electric Reliability Organization's discretion is likely to receive less deference in the future. (author)

Skees, J. Daniel

2010-06-15T23:59:59.000Z

496

Emergency Diesel Generator reliability at Department of Energy (DOE) facilities  

Science Conference Proceedings (OSTI)

This report is the culmination of the first phase of a comprehensive effort by the Department of Energy (DOE) Defense Programs (DP) Office of Self-Assessment and Em