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Author by :
Languange Used : en
Release Date : 2011
Publisher by :

ISBN : OCLC:953405311

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Author by :
Languange Used : en
Release Date : 2010
Publisher by :

ISBN : OCLC:1065671028

This paper considers the power system restoration planning problem (PSRPP) for disaster recovery, a fundamental problem faced by all populated areas. PSRPPs are complex stochastic optimization problems that combine resource allocation, warehouse location, and vehicle routing considerations. Furthermore, electrical power systems are complex systems whose behavior can only be determined by physics simulations. Moreover, these problems must be solved under tight runtime constraints to be practical in real-world disaster situations. This work is three fold: (1) it formalizes the specification of PSRPPs; (2) introduces a simple optimization-simulation hybridization necessary for solving PSRPPs; and (3) presents a complete restoration algorithm that utilizes the strengths of mixed integer programming, constraint programming, and large neighborhood search. This paper studied a novel problem in the field of humanitarian logistics, the Power System Restoration Problem (PSRPP). The PSRPP models the strategic planning process for post disaster power system recovery. The paper proposed a multi-stage stochastic hybrid optimization algorithm that yields high quality solutions to real-world benchmarks provided by Los Alamos National Laboratory (LANL). The algorithm uses a variety of technologies, including MIP, constraint programming, and large neighborhood search, to exploit the structure of each individual optimization subproblem. The experimental results on hurricane disaster benchmarks indicate that the algorithm is practical from a computational standpoint and produce significant improvements over existing relief delivery procedures....

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Author by : M. M. Adibi
Languange Used : en
Release Date : 2000-06-22
Publisher by : John Wiley & Sons

ISBN : 9780780353978

"At a time when bulk power systems operate close to their design limits, the restructuring of the electric power industry has created vulnerability to potential blackouts. Prompt and effective power system restoration is essential for the minimization of downtime and costs to the utility and its customers, which mount rapidly after a system blackout. Power System Restoration meets the complex challenges that arise from the dynamic capabilities of new technology in areas such as large-scale system analysis, communication and control, data management, artificial intelligence, and allied disciplines. It provides an up-to-date description of the restoration methodologies and implementation strategies practiced internationally. The book opens with a general overview of the restoration process and then covers: * Techniques used in restoration planning and training * Knowledge-based systems as operational aids in restoration * Issues associated with hydro and thermal power plants * High and extra-high voltage transmission systems * Restoration of distribution systems Power System Restoration is essential reading for all power system planners and operating engineers in the power industry. It is also a valuable reference for researchers, practicing power engineers, and engineering students." Sponsored by: IEEE Power Engineering Society...

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Author by : Chong Wang
Languange Used : en
Release Date : 2010
Publisher by :

ISBN : OCLC:813240553

After a power system blackout, system restoration is the most important task for the operators. Most power systems rely on an off & ndashline restoration plan and the experience of operators to select scenarios for the black start path. Using an off & ndashline designed restoration plan based on past experience may not be the most reliable approach under changing network configurations and loading levels. Hence, an objective restoration path selection procedure, including the option to check constraints, may be more responsive in providing directed guidance to the operators to identify the optimal transmission path to deliver power to other power plants or to pick up load as needed. After the system is subjected to a blackout, parallel restoration is an efficient way to speed up the restoration process. For a large scale power system, this system sectionalizing problem is quite complicated when considering black & ndashstart constraints, generation/load balance constraints and voltage constraints. This dissertation presents an ordered binary decision diagram (OBDD) & ndashbased system sectionalizing method, by which the splitting points can be quickly found. The simulation results on the IEEE 39 and 118 & ndashbus system show that the method can successfully split the system into subsystems satisfying black & ndashstart constraints, generation/load balance constraints and voltage constraints. A power transfer distribution factor (PTDF) & ndashbased approach will be described in this dissertation to check constraints while restoring the system. Two types of restoration performance indices are utilized considering all possible restoration paths, which are then ranked according to their expected performance characteristics as reflected by the restoration performance index. PTDFs and weighting factors are used to determine the ordered list of restoration paths, which can enable the load to be picked up by lightly loaded lines or relieve stress on heavily loaded lines. A transmission path agent can then be formulated by performing the automatic path selection under different system operating conditions. The proposed restoration strategy is tested on the IEEE & ndash39 bus system and on the Western region of the Entergy system. The testing results reveal that the proposed strategy can be used in real time....

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Author by : Kai Sun
Languange Used : en
Release Date : 2019-01-29
Publisher by : John Wiley & Sons

ISBN : 9781119282020

Offers a comprehensive introduction to the issues of control of power systems during cascading outages and restoration process Power System Control Under Cascading Failures offers comprehensive coverage of three major topics related to prevention of cascading power outages in a power transmission grid: modelling and analysis, system separation and power system restoration. The book examines modelling and analysis of cascading failures for reliable and efficient simulation and better understanding of important mechanisms, root causes and propagation patterns of failures and power outages. Second, it covers controlled system separation to mitigate cascading failures addressing key questions such as where, when and how to separate. Third, the text explores optimal system restoration from cascading power outages and blackouts by well-designed milestones, optimised procedures and emerging techniques. The authors — noted experts in the field — include state-of-the-art methods that are illustrated in detail as well as practical examples that show how to use them to address realistic problems and improve current practices. This important resource: Contains comprehensive coverage of a focused area of cascading power system outages, addressing modelling and analysis, system separation and power system restoration Offers a description of theoretical models to analyse outages, methods to identify control actions to prevent propagation of outages and restore the system Suggests state-of-the-art methods that are illustrated in detail with hands-on examples that address realistic problems to help improve current practices Includes companion website with samples, codes and examples to support the text Written for postgraduate students, researchers, specialists, planners and operation engineers from industry, Power System Control Under Cascading Failures contains a review of a focused area of cascading power system outages, addresses modelling and analysis, system separation, and power system restoration....

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Author by : National Academies of Sciences, Engineering, and Medicine
Languange Used : en
Release Date : 2017-09-25
Publisher by : National Academies Press

ISBN : 9780309463102

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....

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Author by : Zhaoguang Hu
Languange Used : en
Release Date : 2013-05-20
Publisher by : Springer Science & Business Media

ISBN : 9783642370847

Integrated Resource Strategic Planning and Power Demand-Side Management elaborates two important methods - Integrated Resource Strategic Planning (IRSP) and Demand Side Management (DSM) - in terms of methodology modeling, case studies and lessons learned. This book introduces a prospective and realistic theory of the IRSP method and includes typical best practices of DSM for energy conservation and emission reduction in different countries. It can help energy providers and governmental decision-makers formulate policies and make plans for energy conservation and emission reduction, and can help power consumers reduce costs and participate in DSM projects. Zhaoguang Hu is the vice president and chief energy specialist at the State Grid Energy Research Institute, and the head of the Power Supply and Demand Research Laboratory in China....

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Author by : S. P. Singh
Languange Used : en
Release Date : 2015
Publisher by :

ISBN : 8184874405

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Author by : National Research Council
Languange Used : en
Release Date : 2012-11-25
Publisher by : National Academies Press

ISBN : 9780309114042

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....

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Author by : Wei Kou
Languange Used : en
Release Date : 2018
Publisher by :

ISBN : OCLC:1196372113

Integration or interconnection of distributed energy resources (DER) is evolving as an emerging power scenario for electric power generation, transmission and distribution infrastructure globally. As DER applications penetrates into the conventional bulk power systems, the following technical problems and challenges have been considered by the utility operators and DER providers: 1) sizing and locating for DERs in the planning stage; 2) demand-side management for DER-dominated microgrid in the steady-state operation stage; 3) protection control for inverter-interfaced DER in the transient dynamic stage; and 4) restoration service with DER participants in the restoration stage. To overcome the above difficulties, four novel approaches are presented in this dissertation: 1. A combined strategy to determine the optimal location of PV distributed generation units (PV-DGs): Economic optimization and power system stability are considered together to decide the capacities, quantities, and locations of PV-DGs. 2. A distributed demand response (DR) algorithm to realize peak load shaving in a campus microgrid: A decentralized DR model is developed to realize peak load shaving under the incentive of minimizing the affected population caused by the load interruption. 3. Fault ride through (FRT) technique for inverter-interfaced DER integration into the bulk power system: To provide fault current management and increase the system reliability in the transient dynamic stage, a natural reference frame based FRT technique is developed. 4. A game-theoretic approach for DER energy trading in the restoration service: It offers system operators an important decision support on energy dispatching during restoration service....