Download or read book A Study on Wide area Measurement based Approaches for Power System Voltage Stability written by Haoyu Yuan and published by . This book was released on 2016 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the development of wide-area monitoring system (WAMS) enabled by the synchrophasor technology, measurement-based approaches for power system voltage stability and control have been widely discussed in recent years. Based on high-frequency synchronized measurement signals collected from phasor measurement units (PMUs), these approaches have great potentials to significantly improve the situational awareness and to effectively guide the controls of interconnected modern power systems. If compared with conventional model-based voltage stability assessment (VSA) and control methods, the measurement-based methods are relatively new. Although their simplicity and independence of system models make them suitable for online deployment, the applications of these measurement-based methods are not as well explored as their model-based counterparts, which have been improved and matured over several decades. Therefore, the motivation of this dissertation is to explore new applications of measurement-based voltage stability assessment and control. In this dissertation, first, a comparative study on existing measurement-based approaches is provided; second, a hybrid VSA approach for N-1 contingency is proposed; third, measurement-based wide-area loading margin sensitivity suitable for voltage stability control is presented with a sample control study; fourth, mitigation approaches for overestimation of voltage stability margin when using coupled single-port circuit are proposed; and fifth, voltage dependent load model is integrated into measurement-based voltage stability analysis to provide a practical and accurate assessment of voltage stability margin.

Download or read book Wide Area Power Systems Stability Protection and Security written by Hassan Haes Alhelou and published by Springer Nature. This book was released on 2020-09-21 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book proposes new control and protection schemes to improve the overall stability and security of future wide-area power systems. It focuses on the high penetration levels of renewable energy sources and distributed generation, particularly with the trend towards smart grids. The control methods discussed can improve the overall stability in normal and abnormal operation conditions, while the protection methods presented can be used to ensure the secure operation of systems under most severe contingencies. Presenting stability, security, and protection methods for power systems in one concise volume, this book takes the reader on a journey from concepts and fundamentals to the latest and future trends in each topic covered, making it an informative and intriguing read for researchers, graduate students, and practitioners alike.

Download or read book Study of Power System Voltage Stability Monitoring and Control Based on Wide Area Measurement System written by 蘇恆毅 and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wide area measurement systems applied to voltage stability written by Bachen Wang and published by GRIN Verlag. This book was released on 2016-04-11 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Essay from the year 2016 in the subject Electrotechnology, grade: 2, , language: English, abstract: In this paper, voltage stability index and the theories on voltage stability as well as WAMS` functions are proposed. The use of WAMS can help system to make quick measures to keep the voltage stability. Wide-area measurement systems (WAMS) is a system to measure the parameters of the power system and deal with abnormal cases. Transient voltage stability is the ability that the system keeps the voltage normal after fault, which is very important to the power system.

Download or read book TIME DOMAIN VOLTAGE STABILITY ASSESSMENT AND WIDE AREA CONTROL written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : This dissertation proposes and develops an EMTP-based time-domain approach for voltage stability assessment. Steady-state approaches for voltage stability analysis use linearized equations based on power frequency phasor analysis using the Jacobian matrix of the power system. Using these conventional methods, nonlinearities and resultant harmonics are not addressed, nor are frequency-dependencies or natural responses to step-changes in the system. In order to implement this method all power system components need to be modeled in time-domain. Different load models and Var compensators have been developed in EMTP/ATP to conduct time-domain simulations. A Phasor Measurement Unit (PMU) model is also presented to provide a bridge between time and phasor domain analysis. Different case studies are shown in which time-domain analysis present the accurate results while steady state analysis include measurement and estimation errors. Furthermore, a new Voltage Stability Index (VSI) is developed to detect impending voltage instability. A proposed multi-criteria index is developed based on different sub-indices calculated by monitoring different parameters of power system. the multi-level feature of the proposed index enables us to closely monitor voltage stability status and implement appropriate remedial actions when needed and avoid unnecessary actions. Finally, the application of the proposed method and VSI in wide-area control and protection against voltage collapse is investigated. Novel wide-area control algorithms are developed based on voltage sensitivity analysis and the results for shunt capacitor and Static Var Compensator (SVC) control are compared to local-control strategies. It is shown that the voltage support provided by wide-area control strategy is more effective and will lead to a better voltage profile. The methods developed here can be directly implemented in smart grid infrastructure using a combination of synchrophasors and sampled values capabilities.

Download or read book Power System Monitoring and Control written by Hassan Bevrani and published by John Wiley & Sons. This book was released on 2014-06-09 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: POWER SYSTEM MONITORING AND CONTROL An invaluable resource for addressing the myriad critical technical engineering considerations in modern electric power system design and operation Power System Monitoring and Control (PSMC) is becoming increasingly significant in the design, planning, and operation of modern electric power systems. In response to the existing challenge of integrating advanced metering, computation, communication, and control into appropriate levels of PSMC, Power System Monitoring and Control presents a comprehensive overview of the basic principles and key technologies for the monitoring, protection, and control of contemporary wide-area power systems. A variety of topical issues are addressed, including renewable energy sources, smart grids, wide area stabilizing, coordinated voltage regulation and angle oscillation damping—as well as the advantages of phasor measurement units (PMUs) and global positioning system (GPS) time signal. Analysis and synthesis examples, along with case studies, add depth and clarity to all topics. Provides an up-to-date and comprehensive reference for researchers and engineers working on wide-area PSMC Links fundamental concepts of PSMC, advanced metering and control theory/techniques, and practical engineering considerations Covers PSMC problem understanding, design, practical aspects, and topics such as smart grid and coordinated angle oscillation damping and voltage regulation Incorporates the authors’ experiences teaching and researching in international locales including Japan, Singapore, Malaysia, and Australia Power System Monitoring and Control is ideally suited for a graduate course on this topic. It is also a practical reference for researchers and professional engineers working in power system monitoring, dynamic stability and control.

Download or read book Phasor Measurement Units and Wide Area Monitoring Systems written by Antonello Monti and published by Academic Press. This book was released on 2016-06-09 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phasor Measurement Units and Wide Area Monitoring Systems presents complete coverage of phasor measurement units (PMUs), bringing together a rigorous academic approach and practical considerations on the implementation of PMUs to the power system. In addition, it includes a complete theory and practice of PMU technology development and implementation in power systems. Presents complete coverage of the topic from the measurement to the system, bringing together a rigorous academic approach and practical considerations on the implementation of PMUs to the power system Includes a complete proposal of implementation for a PMU platform that could be replicated in every laboratory Covers PMU software compiled for National Instrument HW, a compiled monitoring platform to be used to monitor PMU data and developed custom solutions, and a compiled National Instrument schematic to be executed within a SmartPhone app

Download or read book Wide Area Voltage Monitoring and Optimization written by Haoen Li and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the continual global increase in the demand for electricity, power systems are becoming more complex. In addition, factors such as power market deregulation, unscheduled voltage regulation, transmission line outages may lead to power transfer across areas being even more unpredictable. These issues all contribute to transmission lines carrying electric power nearer to their limits, which causes power systems to being operated under serious stress. Many recent major blackouts are caused by voltage collapse, and this justifies the need for a fast and accurate voltage stability monitoring approach for the modern power system.

Download or read book Synchronized Phasor Measurements and Their Applications written by A.G. Phadke and published by Springer Science & Business Media. This book was released on 2008-08-15 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an account of the field of synchronized Phasor Measurement technology, its beginning, its technology and its principal applications. It covers wide Area Measurements (WAM) and their applications. The measurements are done using GPS systems and eventually will replace the existing technology. The authors created the field about twenty years ago and most of the installations planned or now in existence around the world are based on their work.

Download or read book Voltage Control and Protection in Electrical Power Systems written by Sandro Corsi and published by Springer. This book was released on 2015-06-19 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the author’s twenty years of experience, this book shows the practicality of modern, conceptually new, wide area voltage control in transmission and distribution smart grids, in detail. Evidence is given of the great advantages of this approach, as well as what can be gained by new control functionalities which modern technologies now available can provide. The distinction between solutions of wide area voltage regulation (V-WAR) and wide area voltage protection (V-WAP) are presented, demonstrating the proper synergy between them when they operate on the same power system as well as the simplicity and effectiveness of the protection solution in this case. The author provides an overview and detailed descriptions of voltage controls, distinguishing between generalities of underdeveloped, on-field operating applications and modern and available automatic control solutions, which are as yet not sufficiently known or perceived for what they are: practical, high-performance and reliable solutions. At the end of this thorough and complex preliminary analysis the reader sees the true benefits and limitations of more traditional voltage control solutions, and gains an understanding and appreciation of the innovative grid voltage control and protection solutions here proposed; solutions aimed at improving the security, efficiency and quality of electrical power system operation around the globe. Voltage Control and Protection in Electrical Power Systems: from System Components to Wide Area Control will help to show engineers working in electrical power companies and system operators the significant advantages of new control solutions and will also interest academic control researchers studying ways of increasing power system stability and efficiency.

Download or read book Real Time Stability in Power Systems written by Savu C. Savulescu and published by Springer. This book was released on 2014-07-10 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This pioneering volume has been updated and enriched to reflect the state-of-the-art in blackout prediction and prevention. It documents and explains background and algorithmic aspects of the most successful steady-state, transient and voltage stability solutions available today in real-time. It also describes new, cutting-edge stability applications of synchrophasor technology, and captures industry acceptance of metrics and visualization tools that quantify and monitor the distance to instability. Expert contributors review a broad spectrum of additionally available techniques, such as trajectory sensitivities, ensuring this volume remains the definitive resource for industry practitioners and academic researchers in this critical area of power system operations.

Download or read book Voltage Stability in Electrical Power Systems written by Farid Karbalaei and published by John Wiley & Sons. This book was released on 2022-12-02 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Voltage Stability in Electrical Power Systems Explore critical topics and the latest research in voltage stability in electric power systems In Voltage Stability in Electrical Power Systems: Concepts, Assessment, and Methods for Improvement, three distinguished electrical engineers deliver a comprehensive discussion of voltage stability analysis in electrical power systems. The book discusses the concept of voltage stability, effective factors and devices, and suitable system modeling, offering readers an authoritative overview of the subject and strategies to prevent instability in power systems. The authors explore critical topics such as load and load tap changer (LTC) transformer modeling and the impact of distributed generation and transmission-distribution interactions on voltage stability. They also present practical methods to improve voltage stability. Readers will also find: Thorough introductions to voltage stability, effective factors and devices, and suitable systems modeling Comprehensive explorations of voltage stability assessment methods, including the continuation power flow methods and PV-curve fitting In-depth explorations of methods of improving voltage stability, including preventive and corrective methods Fulsome presentations of measurement-based indices and model-based indices of stability assessment Perfect for engineers and other professionals designing electric power systems, Voltage Stability in Electrical Power Systems: Concepts, Assessment, and Methods for Improvement will also earn a place in the libraries of graduate and senior undergraduate students with an interest in power systems.

Download or read book Cognitive Radio Communication and Networking written by Robert Caiming Qiu and published by John Wiley & Sons. This book was released on 2012-09-10 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author presents a unified treatment of this highly interdisciplinary topic to help define the notion of cognitive radio. The book begins with addressing issues such as the fundamental system concept and basic mathematical tools such as spectrum sensing and machine learning, before moving on to more advanced concepts and discussions about the future of cognitive radio. From the fundamentals in spectrum sensing to the applications of cognitive algorithms to radio communications, and discussion of radio platforms and testbeds to show the applicability of the theory to practice, the author aims to provide an introduction to a fast moving topic for students and researchers seeking to develop a thorough understanding of cognitive radio networks. Examines basic mathematical tools before moving on to more advanced concepts and discussions about the future of cognitive radio Describe the fundamentals of cognitive radio, providing a step by step treatment of the topics to enable progressive learning Includes questions, exercises and suggestions for extra reading at the end of each chapter Topics covered in the book include: Spectrum Sensing: Basic Techniques; Cooperative Spectrum Sensing Wideband Spectrum Sensing; Agile Transmission Techniques: Orthogonal Frequency Division Multiplexing Multiple Input Multiple Output for Cognitive Radio; Convex Optimization for Cognitive Radio; Cognitive Core (I): Algorithms for Reasoning and Learning; Cognitive Core (II): Game Theory; Cognitive Radio Network IEEE 802.22: The First Cognitive Radio Wireless Regional Area Network Standard, and Radio Platforms and Testbeds.

Download or read book Power System Operation with Large Scale Stochastic Wind Power Integration written by Tao Ding and published by Springer. This book was released on 2016-09-17 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the uncertainties of wind power modeled as interval numbers and assesses the physical modeling and methods for interval power flow, interval economic dispatch and interval robust economic dispatch. In particular, the optimization models are set up to address these topics and the state-of-the-art methods are employed to efficiently solve the proposed models. Several standard IEEE test systems as well as real-world large-scale Polish power systems have been tested to verify the effectiveness of the proposed models and methods. These methods can be further applied to other research fields that are involved with uncertainty.

Download or read book Real time Voltage Stability Monitoring and Control for Load Areas written by Fengkai Hu and published by . This book was released on 2016 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation proposes a hybrid approach for real-time monitoring and controlling voltage stability of a load area fed by N tie lines. This hybrid approach integrates both simulation-based and measurement-based approaches for voltage stability assessment (VSA). First, for measurement-based VSA (MBVSA), a new method is proposed for monitoring and control of load areas, which adopts an N+1 buses equivalent system so as to model and monitor individual tie lines of a load area compared to a traditional MBVSA method adopting a Thevenin equivalent. For each tie line, the new method solves the power transfer limit against voltage instability analytically as a function of all parameters of that equivalent, which is online identified from real-time synchronized measurements on boundary buses of the load area. Thus, this new MBVSA method can directly calculate the real-time power transfer limit on each tie line. Second, in order to assess the voltage stability margins under an n-1 contingency, based on the proposed MBVSA method, two sensitivity analyses have been performed, which are respectively for the parameter sensitivity of the equivalent system and the sensitivity of the tie line flow under an n-1 contingency. Third, the proposed MBVSA method implemented for both the real-time condition and potential n-1 contingencies is integrated with the simulation-based VSA approach to form a hybrid approach. The MBVSA method helps reduce the computation burden by eliminating the unimportant contingencies while the simulation-based method provides accurate information for specific “what if” scenarios such as stability limit and margin indices under n-1 contingency conditions. In addition, simulation using the model of the system can provide recommendations for preventive control if potential voltage instability is identified. This proposed hybrid VSA approach has been validated on the NPCC (Northeast Power Coordinating Council) Large-scale Test Bed (LTB) system developed by the CURENT (Center for Ultra-Wide-Area Resilient Electric Energy Transmission Networks), and also implemented on the CURENT Hardware Test Bed (HTB) system. The effectiveness of the MBVSA in real-time monitoring and closed-loop control against voltage instability has been validated.

Download or read book Real Time PMU based Stability Monitoring written by Zijie Lin and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transient Stability of Power Systems written by Mania Pavella and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: The market liberalization is expected to affect drastically the operation of power systems, which under economical pressure and increasing amount of transactions are being operated much closer to their limits than previously. These changes put the system operators faced with rather different and much more problematic scenarios than in the past. They have now to calculate available transfer capabilities and manage congestion problems in a near on line environment, while operating the transmission system under extremely stressed conditions. This requires highly reliable and efficient software aids, which today are non-existent, or not yet in use. One of the most problematic issues, very much needed but not yet en countered today, is on-line dynamic security assessment and control, enabling the power system to withstand unexpected contingencies without experienc ing voltage or transient instabilities. This monograph is devoted to a unified approach to transient stability assessment and control, called SIngle Machine Equivalent (S1ME).