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Author: Publisher: ISBN: Category : Distributed generation of electric power Languages : en Pages : 38
Book Description
This report explores the ability of distributed generation (DG) options to provide cost-effective alternatives to central station generation, transmission, and distribution upgrades for alleviating transmission and distribution congestion. The need for this study was driven by three major factors: (1) DOE's DG program, while quite successful in showing the value of DG in large portions of the United States, has been less successful in the Southeast, likely because of the low energy prices, high excess electrical capacity, and lack of electricity deregulation in the region. (2) Lack of DG-related analysis that uses real world data on specific sites that can be used as good indicators of the issues and benefits of DG. (3) Interest on behalf of DOE in analysis in two southern states that can be used to show the value of DG to several key Congressional officials from the states. To demonstrate this ability for constrained sites in systems in the states of Florida and Mississippi, the Electricity Asset Evaluation Model (EAEM) is used to assess the costs and benefits of installing DG options to reduce load in areas with transmission congestion versus upgrading the transmission and distribution (T & D) systems.
Author: Publisher: ISBN: Category : Distributed generation of electric power Languages : en Pages : 38
Book Description
This report explores the ability of distributed generation (DG) options to provide cost-effective alternatives to central station generation, transmission, and distribution upgrades for alleviating transmission and distribution congestion. The need for this study was driven by three major factors: (1) DOE's DG program, while quite successful in showing the value of DG in large portions of the United States, has been less successful in the Southeast, likely because of the low energy prices, high excess electrical capacity, and lack of electricity deregulation in the region. (2) Lack of DG-related analysis that uses real world data on specific sites that can be used as good indicators of the issues and benefits of DG. (3) Interest on behalf of DOE in analysis in two southern states that can be used to show the value of DG to several key Congressional officials from the states. To demonstrate this ability for constrained sites in systems in the states of Florida and Mississippi, the Electricity Asset Evaluation Model (EAEM) is used to assess the costs and benefits of installing DG options to reduce load in areas with transmission congestion versus upgrading the transmission and distribution (T & D) systems.
Author: National Research Council Publisher: National Academies Press ISBN: 0309116023 Category : Science Languages : en Pages : 736
Book Description
For multi-user PDF licensing, please contact customer service. Energy touches our lives in countless ways and its costs are felt when we fill up at the gas pump, pay our home heating bills, and keep businesses both large and small running. There are long-term costs as well: to the environment, as natural resources are depleted and pollution contributes to global climate change, and to national security and independence, as many of the world's current energy sources are increasingly concentrated in geopolitically unstable regions. The country's challenge is to develop an energy portfolio that addresses these concerns while still providing sufficient, affordable energy reserves for the nation. The United States has enormous resources to put behind solutions to this energy challenge; the dilemma is to identify which solutions are the right ones. Before deciding which energy technologies to develop, and on what timeline, we need to understand them better. America's Energy Future analyzes the potential of a wide range of technologies for generation, distribution, and conservation of energy. This book considers technologies to increase energy efficiency, coal-fired power generation, nuclear power, renewable energy, oil and natural gas, and alternative transportation fuels. It offers a detailed assessment of the associated impacts and projected costs of implementing each technology and categorizes them into three time frames for implementation.
Author: National Academies of Sciences, Engineering, and Medicine Publisher: National Academies Press ISBN: 0309463076 Category : Science Languages : en Pages : 171
Book Description
Americans' safety, productivity, comfort, and convenience depend on the reliable supply of electric power. The electric power system is a complex "cyber-physical" system composed of a network of millions of components spread out across the continent. These components are owned, operated, and regulated by thousands of different entities. Power system operators work hard to assure safe and reliable service, but large outages occasionally happen. Given the nature of the system, there is simply no way that outages can be completely avoided, no matter how much time and money is devoted to such an effort. The system's reliability and resilience can be improved but never made perfect. Thus, system owners, operators, and regulators must prioritize their investments based on potential benefits. Enhancing the Resilience of the Nation's Electricity System focuses on identifying, developing, and implementing strategies to increase the power system's resilience in the face of events that can cause large-area, long-duration outages: blackouts that extend over multiple service areas and last several days or longer. Resilience is not just about lessening the likelihood that these outages will occur. It is also about limiting the scope and impact of outages when they do occur, restoring power rapidly afterwards, and learning from these experiences to better deal with events in the future.
Author: Toshihisa Funabashi Publisher: Academic Press ISBN: 0128032138 Category : Technology & Engineering Languages : en Pages : 324
Book Description
Integration of Distributed Energy Resources in Power Systems: Implementation, Operation and Control covers the operation of power transmission and distribution systems and their growing difficulty as the share of renewable energy sources in the world's energy mix grows and the proliferation trend of small scale power generation becomes a reality. The book gives students at the graduate level, as well as researchers and power engineering professionals, an understanding of the key issues necessary for the development of such strategies. It explores the most relevant topics, with a special focus on transmission and distribution areas. Subjects such as voltage control, AC and DC microgrids, and power electronics are explored in detail for all sources, while not neglecting the specific challenges posed by the most used variable renewable energy sources. - Presents the most relevant aspects of the integration of distributed energy into power systems, with special focus on the challenges for transmission and distribution - Explores the state-of the-art in applications of the most current technology, giving readers a clear roadmap - Deals with the technical and economic features of distributed energy resources and discusses their business models
Author: Ramesh Bansal Publisher: Springer ISBN: 3319513435 Category : Technology & Engineering Languages : en Pages : 813
Book Description
This book features extensive coverage of all Distributed Energy Generation technologies, highlighting the technical, environmental and economic aspects of distributed resource integration, such as line loss reduction, protection, control, storage, power electronics, reliability improvement, and voltage profile optimization. It explains how electric power system planners, developers, operators, designers, regulators and policy makers can derive many benefits with increased penetration of distributed generation units into smart distribution networks. It further demonstrates how to best realize these benefits via skillful integration of distributed energy sources, based upon an understanding of the characteristics of loads and network configuration.
Author: Lawryn Edmonds Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
An increase in distributed energy resources (DERs), particularly non-dispatchable variable renewable energy (VRE) sources such as rooftop photovoltaic and small-scale wind turbines, brings about new challenges to distribution system operators. DERs, such as VRE sources, battery energy storage systems, distributed (conventional) generators, and responsive loads, increase the complexity of the distribution system. Therefore, system characteristics shift away from the previously passive system toward an active distribution system. With an active distribution system, there comes a need for fair and transparent pricing schemes, which reward DERs for reducing losses, voltage violations, congestion, and imbalance of lines. Further, increased energy storage capabilities and demand-responsive loads will help integrate the distributed resources by instantaneously balancing generation and demand. These balancing actions must also be rewarded. Therefore, a distribution locational marginal price (DLMP) mechanism serving as a price signal for the economic dispatch of generation sources within the distribution system is first proposed. Defined as the marginal cost to supply the next increment of power to a specific location, this mechanism may encourage the acceptance of DERs due to the incentives arising from nodal pricing. DLMP components for energy, loss, voltage violation, and congestion for a linear approximation of the alternating current optimal power flow are leveraged in this work. The proposed method also addresses VRE uncertainty using the data-driven probability efficient point method. Numerical results show the DLMP mechanism can serve as a tool to improve distribution grid conditions by encouraging or discouraging real and reactive power consumption at specific nodes in the system. It is also demonstrated that three-phase real and reactive nodal pricing allows for better control of diverse DERs in active distribution systems. The DLMP is further used in a home energy management system application that utilizes the blockchain for secure communication. Next, an investigation into the impact of coupling the electricity distribution and drinking water networks on the DLMP and efficient VRE integration is undergone. Water pumps serve as demand-responsive loads that follow the available VRE generation. This technique is achieved by using elevated water tanks to optimally schedule the water network operation to meet water demands while improving grid conditions. A novel linear coordinated water and energy model is formulated and validated on a coupled electrical distribution system and water network. Results show the impact of coupling water and energy networks on the cost of operation and the DLMPs. The inclusion of water tanks as alternative storage devices in the electricity distribution network are shown to moderately reduce voltage violations, line congestion, and VRE curtailments in a case with high VRE penetration. Finally, unique demand response and storage solutions are identified within an agricultural community microgrid that considers an electricity-run green ammonia synthesis plant. The small-scale ammonia plant's operational schedule follows the available VRE generation to reduce VRE curtailment and improve grid conditions. Excess renewables in the system can be stored as chemical energy in anhydrous ammonia. When the price of electricity is extremely high, the proposed model accounts for a direct ammonia fuel cell that consumes ammonia to provide electricity back to the grid. This work proposes a linear coordinated operational model of an electricity distribution system and an electricity-run, green ammonia plant. Case studies are performed on an agricultural community microgrid. Results indicate the ammonia plant can adequately serve as a demand response resource and positively impact the DLMP. Studies showed this coupling decreased electricity costs of the ammonia plant by nearly a third, with ammonia profits increasing 17%. This dissertation can serve as a tool for utilities implementing the DLMP market mechanism in distribution systems. It can further assist with the operation of coordinated operation of water and electricity distribution networks under uncertain VRE generation. Finally, agricultural community microgrid operators can utilize techniques proposed in this dissertation with the hope of increasing the vitality of small towns and rural communities.
Author: National Research Council Publisher: National Academies Press ISBN: 0309114047 Category : Political Science Languages : en Pages : 165
Book Description
The electric power delivery system that carries electricity from large central generators to customers could be severely damaged by a small number of well-informed attackers. The system is inherently vulnerable because transmission lines may span hundreds of miles, and many key facilities are unguarded. This vulnerability is exacerbated by the fact that the power grid, most of which was originally designed to meet the needs of individual vertically integrated utilities, is being used to move power between regions to support the needs of competitive markets for power generation. Primarily because of ambiguities introduced as a result of recent restricting the of the industry and cost pressures from consumers and regulators, investment to strengthen and upgrade the grid has lagged, with the result that many parts of the bulk high-voltage system are heavily stressed. Electric systems are not designed to withstand or quickly recover from damage inflicted simultaneously on multiple components. Such an attack could be carried out by knowledgeable attackers with little risk of detection or interdiction. Further well-planned and coordinated attacks by terrorists could leave the electric power system in a large region of the country at least partially disabled for a very long time. Although there are many examples of terrorist and military attacks on power systems elsewhere in the world, at the time of this study international terrorists have shown limited interest in attacking the U.S. power grid. However, that should not be a basis for complacency. Because all parts of the economy, as well as human health and welfare, depend on electricity, the results could be devastating. Terrorism and the Electric Power Delivery System focuses on measures that could make the power delivery system less vulnerable to attacks, restore power faster after an attack, and make critical services less vulnerable while the delivery of conventional electric power has been disrupted.
Author: Stan Mark Kaplan Publisher: The Capitol Net Inc ISBN: 1587331624 Category : Technology & Engineering Languages : en Pages : 644
Book Description
This resource describes the thought behind a smart-grid system and the move away from a centralized, producer-controlled network to one that is less centralized and more consumer-interactive.
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Author: National Research Council
Author: National Academies of Sciences, Engineering, and Medicine
Author: Toshihisa Funabashi
Author: Matthew H. Brown
Author: Ramesh Bansal
Author: Lawryn Edmonds
Author: National Research Council
Author: Stan Mark Kaplan