National Rural Electric Cooperative Association

About: National Rural Electric Cooperative Association is a based out in . It is known for research contribution in the topics: Interoperability & IEEE 802. The organization has 27 authors who have published 28 publications receiving 1538 citations.

Summary of Distributed Resources Impact on Power Delivery Systems

Abstract: Because traditional electric power distribution systems have been designed assuming the primary substation is the sole source of power and short-circuit capacity, DR interconnection results in operating situations that do not occur in a conventional system. This paper discusses several system issues which may be encountered as DR penetrates into distribution systems. The voltage issues covered are the DR impact on system voltage, interaction of DR and capacitor operations, and interaction of DR and voltage regulator and LTC operations. Protection issues include fuse coordination, feeding faults after utility protection opens, impact of DR on interrupting rating of devices, faults on adjacent feeders, fault detection, ground source impacts, single phase interruption on three phase line, recloser coordination and conductor burndown. Loss of power grid is also discussed, including vulnerability and overvoltages due to islanding and coordination with reclosing. Also covered separately are system restoration and network issues.

DOE/EPRI Electricity Storage Handbook in Collaboration with NRECA.

Abstract: The Electricity Storage Handbook (Handbook) is a how-to guide for utility and rural cooperative engineers, planners, and decision makers to plan and implement energy storage projects. The Handbook also serves as an information resource for investors and venture capitalists, providing the latest developments in technologies and tools to guide their evaluations of energy storage opportunities. It includes a comprehensive database of the cost of current storage systems in a wide variety of electric utility and customer services, along with interconnection schematics. A list of significant past and present energy storage projects is provided for a practical perspective. This Handbook, jointly sponsored by the U.S. Department of Energy and the Electric Power Research Institute in collaboration with the National Rural Electric Cooperative Association, is published in electronic form at www.sandia.gov/ess. This Handbook is best viewed online. iii Rev. 1, February 2015 DOE/EPRI Electricity Storage Handbook in Collaboration with NRECA Revision Log Comments, inquiries, corrections, and suggestions can be submitted via the website www.sandia.gov/ess/, beginning August 1, 2013.

Rural distribution system planning using Smart Grid Technologies

Abstract: The 2007 Energy Independence and Security Act states that all utilities must consider Smart Grid Technologies when making system investments and improvements. This paper will: • Review the language in the Act that sets this requirement • Review the Values and Characteristics of a Smart Grid as defined by the Department of Energy • Discuss how these Values and Characteristics specifically can be applied to rural utility distribution systems • Describe some of the Smart Grid Technologies available today for use on rural distribution utility systems

Cost-benefit analysis of Demand Response programs incorporated in Open Modeling Framework

Abstract: Rural electric cooperatives (consumer-owned, not-for-profit utilities) develop Demand Response (DR) programs to shift and reduce peak demand, delay capital investment in the distribution grid and reduce wholesale energy demand. Cooperatives have developed a planning tool to project the expected cost and benefit of DR programs; this paper aims to explain this model. The model is a part of the Open Modeling Framework (OMF), developed by the National Rural Electric Cooperative Association (NRECA). The OMF allows cooperative engineers to run various distribution models, import data from commercial tools, visualize the results, and collaborate through a web interface. The DR model can simulate Time of Use (TOU), Critical Peak Pricing (CPP), Peak Time Rebate (PTR), and Direct Load Control (DLC) programs for the purpose of cost-benefit analysis (CBA). It uses the Price Impact Simulation Model (PRISM) to estimate changes to system load profiles based on changes in incentives. The model calculates net present value (NPV), payback period and benefit-to-cost ratio across a program lifetime.