Download or read book Quantifying and Improving Resilience in Power Distribution Systems written by Shiva Poudel and published by . This book was released on 2020 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extreme weather events have a significant impact on the aging and outdated power distribution infrastructures resulting in extended outages and loss of critical services. This calls for the need to ensure resilience in distribution networks by quickly restoring the critical services during a disaster. Unfortunately, the power distribution systems are traditionally designed and operated for known and credible threats and, therefore, are not resilient to extreme events. Fortunately, the aggressive deployment of smart grid technologies provides a source for improving efficiency, reliability, and resilience. The focus of this dissertation is to develop enablers for leveraging the smart grid technologies to enhance the resilience of the distribution networks. Towards this goal, we make the following three major contributions in this dissertation.First, we develop a probabilistic metric to quantify the operational resilience of the distribution grid. The metric is based on Conditional Value-at-Risk (CVaR) measure, where resilience is defined as the conditional expectation of the loss of energy in MWh for events beyond a pre-specified risk threshold. A simulation-based framework to evaluate the proposed metric including the impacts of smart actions, specifically improved restoration and infrastructure hardening on the resilience metric is presented. Second, we investigate the approaches for resilient restoration of power distribution networks using distributed energy resources (DERs). The proposed framework restores critical loads in the feeder while maximizing the post-restoration reliability of restored loads, including tie switches and open-loop distribution system configurations into the optimization formulation, and optimally allocating DERs for an equitable restoration of the critical loads. Further, we also present a new unified decision-making framework that can assist in recovery from both minor and major disruptions in a computationally tractable manner while efficiently utilizing DERs. The proposed formulation is a unified framework to support both the traditional restoration using feeder reconfiguration and the grid-forming DER-assisted intentional islanding methods. Third, we integrate a fault location, isolation, and service restoration (FLISR) application on an ADMS environment using the GridAPPS-D platform. The successful deployment of the FLISR application on the GridAPPS-D platform provides a proof-of-concept for the adoption of advanced applications to support future distribution systems.
Download or read book Enhancing the Resilience of the Nation s Electricity System written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-10-25 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Power Systems Resilience written by Naser Mahdavi Tabatabaei and published by Springer. This book was released on 2018-08-16 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents intuitive explanations of the principles and applications of power system resiliency, as well as a number of straightforward and practical methods for the impact analysis of risk events on power system operations. It also describes the challenges of modelling, distribution networks, optimal scheduling, multi-stage planning, deliberate attacks, cyber-physical systems and SCADA-based smart grids, and how to overcome these challenges. Further, it highlights the resiliency issues using various methods, including strengthening the system against high impact events with low frequency and the fast recovery of the system properties. A large number of specialists have collaborated to provide innovative solutions and research in power systems resiliency. They discuss the fundamentals and contemporary materials of power systems resiliency, theoretical and practical issues, as well as current issues and methods for controlling the risk attacks and other threats to AC power systems. The book includes theoretical research, significant results, case studies, and practical implementation processes to offer insights into electric power and engineering and energy systems. Showing how systems should respond in case of malicious attacks, and helping readers to decide on the best approaches, this book is essential reading for electrical engineers, researchers and specialists. The book is also useful as a reference for undergraduate and graduate students studying the resiliency and reliability of power systems.
Download or read book Resilience Management of Power Distribution Systems in the Face of Stochastic Hurricane Events written by Nariman Laal Dehghani and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the devastating regional and national consequences that hurricane events can incur and the ever-increasing reliance of the society on electricity, hurricane resilience enhancement of power grid is crucial for public safety and economic prosperity. Among the primary systems within the power grid, improving the ability of distribution systems in absorbing shocks and rapidly recovering from hurricanes requires significant attention, as these assets are highly vulnerable to hurricane hazards. However, maintaining and enhancing the hurricane resilience of distribution systems is challenging and requires developing effective decision support tools that are able to maximize resilience under uncertainty considering budget and other constraints. This work presents a few decision-making frameworks for resilience enhancement of electric distribution systems that undergo gradual deterioration and face the risk of exposure to stochastic hurricane events. As overhead distribution lines in the U.S are mainly reliant on wood utility poles, the proposed frameworks integrate modeling of climatic stressors, performance of utility poles, and probabilistic resilience quantification to form constrained optimization problems for replacement of deteriorating wood poles. This work also presents the advantages offered by these frameworks for the resilience of distribution systems compared to common strategies that are used in practice. This work is intended to assist utility companies in making informed decisions to cost-effectively enhance the resilience of power distribution systems over their decision horizons. The main contributions of this dissertation are briefly discussed below: i. The long service life of power distribution systems and their critical role for the society demand for improving resilience not to a single uncertain event in isolation, but to a multiplicity of climatic extremes compounded by aging and deterioration effects. A key contribution of this work is to develop a planning framework based on stochastic optimization to enhance the long-term resilience of aging distribution systems against hurricane events using hardening strategies. ii. To obtain optimal hardening solutions for a smart distribution system, impacts of system operation and repair after disruptions on hardening should be properly simulated. However, interactions of operational measures with hardening decisions are largely neglected in the existing planning frameworks. Another key contribution of this dissertation is the development of a framework based on a novel multi-stage stochastic robust optimization model that identifies optimal hardening decisions under uncertainty while capturing impacts of operational resilience measures on the decision-making process. iii. Solving large-scale optimization models under uncertainty is a challenging task. A contribution of this work is to design and to investigate different solution algorithms for reaching optimal hardening decisions under uncertainty.
Download or read book Measuring the Resilience of Energy Distribution Systems written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. economy depends on reliable and affordable distribution of energy. However, energy distribution systems are vulnerable to a diverse and dynamic set of disruptions. In response, the U.S. Department of Energy is developing strategy to improve the resilience of the nation's energy systems, and it asked RAND to develop a framework for measuring the resilience of energy distribution systems and to summarize the state of metrics for resilience of the electric power, refined oil, and natural gas distribution systems. This report summarizes the concepts addressed by measures of resilience, describes a framework for organizing alternative metrics used to measure resilience of energy distribution systems, and reviews the state of metrics for resilience of energy distribution systems.
Download or read book Disaster Resilience written by National Academies and published by National Academies Press. This book was released on 2012-12-29 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: No person or place is immune from disasters or disaster-related losses. Infectious disease outbreaks, acts of terrorism, social unrest, or financial disasters in addition to natural hazards can all lead to large-scale consequences for the nation and its communities. Communities and the nation thus face difficult fiscal, social, cultural, and environmental choices about the best ways to ensure basic security and quality of life against hazards, deliberate attacks, and disasters. Beyond the unquantifiable costs of injury and loss of life from disasters, statistics for 2011 alone indicate economic damages from natural disasters in the United States exceeded $55 billion, with 14 events costing more than a billion dollars in damages each. One way to reduce the impacts of disasters on the nation and its communities is to invest in enhancing resilience-the ability to prepare and plan for, absorb, recover from and more successfully adapt to adverse events. Disaster Resilience: A National Imperative addresses the broad issue of increasing the nation's resilience to disasters. This book defines "national resilience", describes the state of knowledge about resilience to hazards and disasters, and frames the main issues related to increasing resilience in the United States. It also provide goals, baseline conditions, or performance metrics for national resilience and outlines additional information, data, gaps, and/or obstacles that need to be addressed to increase the nation's resilience to disasters. Additionally, the book's authoring committee makes recommendations about the necessary approaches to elevate national resilience to disasters in the United States. Enhanced resilience allows better anticipation of disasters and better planning to reduce disaster losses-rather than waiting for an event to occur and paying for it afterward. Disaster Resilience confronts the topic of how to increase the nation's resilience to disasters through a vision of the characteristics of a resilient nation in the year 2030. Increasing disaster resilience is an imperative that requires the collective will of the nation and its communities. Although disasters will continue to occur, actions that move the nation from reactive approaches to disasters to a proactive stance where communities actively engage in enhancing resilience will reduce many of the broad societal and economic burdens that disasters can cause.
Download or read book Decision Making Under Uncertainty in Electricity Markets written by Antonio J. Conejo and published by Springer Science & Business Media. This book was released on 2010-09-08 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Decision Making Under Uncertainty in Electricity Markets provides models and procedures to be used by electricity market agents to make informed decisions under uncertainty. These procedures rely on well established stochastic programming models, which make them efficient and robust. Particularly, these techniques allow electricity producers to derive offering strategies for the pool and contracting decisions in the futures market. Retailers use these techniques to derive selling prices to clients and energy procurement strategies through the pool, the futures market and bilateral contracting. Using the proposed models, consumers can derive the best energy procurement strategies using the available trading floors. The market operator can use the techniques proposed in this book to clear simultaneously energy and reserve markets promoting efficiency and equity. The techniques described in this book are of interest for professionals working on energy markets, and for graduate students in power engineering, applied mathematics, applied economics, and operations research.
Download or read book Power System Resilience Under Natural Disasters written by Yushi Tan and published by . This book was released on 2018 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power systems are not likely to remain unscathed by natural disasters such as earthquake, hurricanes, ice storms, as evident from the recent Hurricane Harvey and Hurricane Irma. The outages will last days or even weeks because of the amount of damaged components. And the impacts are aecting the economies, public health and communities especially those that are already facing challenges. This motivates us to study methods of improving resilience in both operational stage and planning stage. We believe this is an interdisciplinary research from several aspects, 1) There has been no consensus on the definition of power system resilience under natural disasters. And in fact, this research direction only becomes hot in recent 4 or 5 years. However, the concept of infrastructure resilience has been prevailing and well-studied in civil engineering. After summarizing previous efforts on defining and quantifying of resilience including those adapted to power systems, we base our work on the resilient measure derived from operability trajectory and develop an equivalent measure of harm that has clearer power system meanings. 2) The knowledge of power systems guides us to focus on electricity distribution systems, where we believe the resilience has more potential for improvement. We start with the case of fully automated radial distribution network, and then move on to partially automated radial distribution network and finally find a way to handle the uncertainties in repair time. After consulting with industry experts, we relax certain operational constraints to make the problems (slightly but enough) easier to solve without compromising their practicality in field. Built upon the operation problems, we formulate the quantification and assessment of resilience in the planning stage, which will help electric utilities decide how best to spread the budget to improve the resilience. 3) Unfortunately, none of the problems described above are easy to solve in terms of the computational complexity. In particular, the operational problems might need to be solved in real time repeatedly and MILP formulations, though straightforward, are too slow in practice. We adopt the settings of scheduling theory and propose the first of its kind, soft precedence constraints, to model the relaxed load flow equations in radial distribution networks. And for the assessment of resilience in the planning stage, we simplify the operational problem by using a single crew approximation with only a constant away from optimal. This allows us to reformulate the distribution systems hardening problem into a combinatorial optimization with the flavor of the multiple knapsack problem. To summarize, this research aims to develop good algorithms and heuristics for problems under the framework of power system resilience adapted from the concept of infrastructure resilience.
Download or read book Quantifying the Resilience of Future Distributed Grids written by Lien Van Schepdael and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart distributed power systems are an important part of the energy shift that is currently taking place. Electricity generation, as well as power system control is moving from central operation towards local distribution grid operation, mainly due to the new possibilities that come along with distributed energy resources (DERs). These allow local consumers to generate their own electricity (prosumer), and offer support services to the grid, such as frequency control for example. Smart distributed grids can improve the local operation of DERs by coordinating demand and supply in real-time, and as such improve the power quality of the distribution grid, as well as improve the security of energy supply on local level. However, intelligent control systems, such as design of the H2020 project EMPOWER that will be used in this work, bring along complex new interconnections in the distribution grid, that may lead to increased risk of failure propagations in the distribution grid. As this, and several other challenges of the smart distributed grid could counteract the anticipated benefits, the need arises to evaluate how well an intelligent control system can cope with constantly evolving interconnections in the distribution grid, with the addition of new technologies, with the grid vulnerabilities regarding cyber security, etc. Evaluating how a system behaves when going through changing conditions, or when undergoing a disturbance, can be defined as resilience analysis, and this is what this thesis will be about. First, resilience will be defined in the context of smart distributed power systems through an extensive literature review, after which a resilience framework will be developed, based on the existing EMPOWER smart distribution grid. The technical characteristics, as well as the functionalities of the system will be defined and represented in an entity-relationship model. This model will serve as a basis to assess the level of dependencies that each main system functionality has in relation to three elements: the physical infrastructure of the system, its socio-economic environment, and the ICT network. Moreover, the attributes, or properties of the system components will be used to formulate resilience indicators against different types of disturbances of the smart distribution grid.
Download or read book Resiliency of Power Distribution Systems written by Anurag K. Srivastava and published by John Wiley & Sons. This book was released on 2024-02-05 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: RESILIENCY OF POWER DISTRIBUTION SYSTEMS A revolutionary book covering the relevant concepts for resiliency-focused advancements of the distribution power grid Most resiliency and security guidelines for the power industry are focused on power transmission systems. As renewable energy and energy storage increasingly replace fossil-fuel-based power generation over the coming years, geospatially neighboring distributed energy resources will supply a majority of consumers and provide clean power through long transmission lines. These electric power distribution systems—the final stage in the delivery of electric power—carry electricity from the transmission system to individual consumers. New distributed devices will be essential to the grid to manage this variable power generation and enhance reliability and resilience while keeping electricity affordable as the world seeks solutions to climate change and threats from extreme events. In Resiliency of Power Distribution Systems, readers are provided with the tools to understand and enhance resiliency of distribution systems—and thereby, the entire power grid. In a shift from the present design and operation of the power system, the book is focused on improving the grid’s ability to predict, adapt, and respond to all hazards and threats. This, then, acts as a guide to ensure that any incident can be mitigated and responded to promptly and adequately. It also highlights the most advanced and applicable methodologies and architecture frameworks that evaluate degradation, advance proactive action, and transform system behavior to maintain normal operation, under extreme operating conditions. Resiliency of Power Distribution Systems readers will also find: Chapter organization that facilitates quick review of distribution fundamental and easy-but-thorough understanding of the importance of resiliency Real-world case studies where resilient power systems could have prevented massive financial and energy losses Frameworks to help mitigate cyber-physical attacks, strategize response on multiple timescales, and optimize operational efficiencies and priorities for the power grid Resiliency of Power Distribution Systems is a valuable reference for power system professionals including electrical engineers, utility operators, distribution system planners and engineers, and manufacturers, as well as members of the research community, energy market experts and policy makers, and graduate students on electrical engineering courses.
Download or read book Enhancing Resilience in Distribution Systems written by Fangxing Fran Li and published by Elsevier. This book was released on 2025-07-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enhancing Resilience in Distribution Systems presents practical guidance for readers on the challenges and potential solutions for resilience in modern power systems. The book begins by explaining the risks and problems for resilience presented by renewable-based power systems. It goes on to clarify the current state of research and propose several novel methodologies and technologies for analysis and improvement of power system resilience. These methods include deep learning, linear programming, and generative adversarial networks. Packed with practical steps and tools for implementing the latest technologies, this book provides researchers and industry professionals with guidance on the resilient systems of the future. - Breaks down novel methodologies and tools from deep learning to generative adversarial networks - Supports readers in implementing practical steps towards resilient renewable energy - Presents practical guidance for readers on the challenges and potential solutions for resilience in modern power systems
Download or read book The Proceedings of the 18th Annual Conference of China Electrotechnical Society written by Qingxin Yang and published by Springer Nature. This book was released on with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Analysis of Resilience Distribution and Application to Rural Electric Distribution System Subjected to Hurricane Wind written by Prativa Sharma and published by . This book was released on 2021 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several mathematical frameworks and models are proposed to quantify the resilience of power systems against hurricane events. However, these frameworks contribute to the urban area's large-scale transmission system or networked power delivery system. They are barely applicable to the rural power distribution system, whose intrinsic properties vary distinctively compared to an urban area. These inherent properties such as less robustness due to the high vulnerability of aged wooden poles, topology characterization as a set of linear subsystems that emanate from one power substation and individually feature zero redundancy and cascading effect, and slow recovery due to low socio-economic resources and geospatially sparse customers make it less resilient. This study thus proposes a fully probabilistic and analytical measurement framework for assessing the resilience of linear power distribution systems affected by hurricane wind. The proposed framework includes the mechanical analysis of coupled wooden-pole and feeder-line as a system unit, the definition of component restoration and system-level recovery functions, and a new resilience measure termed the total mean system-resilience (TMSR). Numerical experimentation is provided that validates the effectiveness and the analytical tractability of the framework. The insight that how physical aging, local resourcefulness, and spatial sparseness interplay and affect the system resilience is shed quantitatively. On the other hand, from a critical synthesis of the existing literature towards several quantitative resilience measures or ambiguously termed metrics frameworks for quantifying the resilience of civil infrastructure, the author found informational inadequacy on taking objective decisions such as resilience acceptance or parameter strengthening prioritization. Two ingrained drawbacks of such measurements are lack of theoretical basis in 1. Discriminating relatively how a parametric infrastructure system is more resilient than a different one or the same one subject to some changed conditions and, 2. answering which input parameter is most influential while assessing the resilience measure. This study thus explores and suggests several statistical tools such as 1. A nonparametric approach to perform sensitivity analysis of each input parameter to output resilience and check for the robustness of the proposed resilience assessment framework. 2. Copula-based dependence analysis to determine the most influential parameter and tail dependencies of the resilience measure with each input parameter. 3. Information-theoretic distance measures termed Resilience Distance (RD) measures to characterize how a system evolves as a function of system variables from the realm of materials, hazards, or socioeconomic resourcefulness. 4. Nonparametric two-sample test to check if the calculated resilience can be accepted when compared to targeted resilience of the same system. Numerical evaluation is conducted using these statistical tools on the proposed probabilistic resilience assessment framework of stochastically modeled rural electrical distribution system, and numerical measures show that the proposed statistical analysis of the resilience distribution can be a possible objective decision-making tool.
Download or read book Defining and Enabling Resiliency of Electric Distribution Systems with Multiple Microgrids written by and published by . This book was released on 2016 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a method for quantifying and enabling the resiliency of a power distribution system (PDS) using analytical hierarchical process and percolation theory. Using this metric, quantitative analysis can be done to analyze the impact of possible control decisions to pro-actively enable the resilient operation of distribution system with multiple microgrids and other resources. Developed resiliency metric can also be used in short term distribution system planning. The benefits of being able to quantify resiliency can help distribution system planning engineers and operators to justify control actions, compare different reconfiguration algorithms, develop proactive control actions to avert power system outage due to impending catastrophic weather situations or other adverse events. Validation of the proposed method is done using modified CERTS microgrids and a modified industrial distribution system. Furthermore, simulation results show topological and composite metric considering power system characteristics to quantify the resiliency of a distribution system with the proposed methodology, and improvements in resiliency using two-stage reconfiguration algorithm and multiple microgrids.
Download or read book E Mobility in Electrical Energy Systems for Sustainability written by D., Lakshmi and published by IGI Global. This book was released on 2024-03-04 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: As more and more communities around the world are turning to electric vehicles (EVs) to help the environment and save energy, we face a big challenge. The systems that deliver power to our homes and businesses are having a tough time keeping up, especially with the increasing use of EVs. This challenge is a major issue for the experts in the energy field who are working hard to figure out how to make sure our power systems stay reliable. The main goal for these experts right now is to create a strong, flexible system that can smoothly handle the integration of EVs, making sure the power flows well, the grid stays stable, and the systems remain eco-friendly. E-Mobility in Electrical Energy Systems for Sustainability is a comprehensive guide to navigating the complexities of e-mobility integration. Delving into crucial aspects such as architectural reconfiguration, restoration strategies, power quality control, and regulatory frameworks, the book provides solutions on how to address the challenges posed by the integration of EVs into distribution systems. Its examination of advanced technologies, including communication-enabled EV charging systems, battery management systems, and power grid cybersecurity measures, equips readers with the knowledge needed to start the transformative journey towards sustainable electric transportation. This book is a great resource for those seeking to understand, engage with, and contribute to the landscape of e-mobility integration.
Download or read book 2018 IEEE PES Transmission and Distribution Conference and Exposition T and D written by IEEE Staff and published by . This book was released on 2018-04-16 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference and Exposition covering all aspects of Transmission and Distribuiton
Download or read book Quantifying Climate Risk and Building Resilience in the UK written by Suraje Dessai and published by Springer Nature. This book was released on 2023-12-22 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book draws together key research from the UK Climate Resilience programme. It focuses on topics central to the programme’s research agenda, including improved characterisation and quantification of climate risks, enhanced understanding of the management of climate risks, and the development and delivery of climate services. Key chapters address the challenges inherent to undertaking resilience research, including how to make the term ‘climate resilience’ usable and useful, co-producing research between academics, policy makers and practitioners, and engaging and communicating outside of academia. This book is unique in providing a concise and accessible overview of the programme’s key lessons, placing the findings into a wider context and it will inform future research, policy and practice agendas.
