Coordinated Control of Inter-Area Oscillations Using Sma and Lmi
Coordinated Control of Inter-Area Oscillations Using Sma and Lmi

Author: Anamitra Pal

Publisher: LAP Lambert Academic Publishing

Published: 2012

Total Pages: 160

ISBN-13: 9783848426812

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The traditional approach to damp inter-area oscillations is through the installation of Power System Stabilizers (PSSs) which provide damping control action through excitation control systems of the generating units. However, study of recent blackouts has shown that the control action provided by a PSS alone is not sufficient for damping oscillations in modern power systems which operate under stressed conditions. An integrated form of control using remote measurements to coordinate the different control elements present in the system is the need of the hour. One way of implementing such a coordinated control is through the development of a Linear Matrix Inequality (LMI)-based polytopic model of the system that guarantees pole placement for a variety of operating conditions. The size of the polytopic formulation is an issue for application of LMIs to large systems. The use of Selective Modal Analysis (SMA) alleviates this problem by reducing the size of the system. The previous attempts have used a model containing all the and modes, with SMA being used to eliminate all the other states. In practical applications the resulting system was still found to be too large to use in a polytopic model. This thesis presents an algorithm to reduce the size of the system to the relevant modes of oscillations. A 16 machine, 68 bus equivalent model of the New England-New York interconnected power system is used as the test case with DC lines and SVCs acting as the control. The algorithm is then applied to a 127-bus equivalent model of the WECC System. The use of ESDs as a form of control is also demonstrated. The results indicate that the proposed control successfully damps the relevant modes of oscillations without negatively damping the other modes. The control is then transferred to a more detailed 4000+ bus model of the WECC system to realize its performance on real-world systems.

Synchronized Phasor Measurements and Their Applications
Synchronized Phasor Measurements and Their Applications

Author: Arun G. Phadke

Publisher: Springer

Published: 2017-01-21

Total Pages: 291

ISBN-13: 331950584X

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This book builds on the cutting edge research presented in the previous edition that was the first of its kind to present the technology behind an emerging power systems management tool still in the early stages of commercial roll-out. In the intervening years, synchrophasors have become a crucial and widely adopted tool in the battle against electricity grid failures around the world. Still the most accurate wide area measurement (WAMS) technology for power systems, synchronized phasor measurements have become increasingly sophisticated and useful for system monitoring, as the advent of big data storage allows for more nuanced real-time analysis, allowing operators to predict, prevent and mitigate the impacts of blackouts with enhanced accuracy and effectiveness. This new edition continues to provide the most encompassing overview of the technology from its pioneers, and has been expanded and updated to include all the applications and optimizations of the last decade.

Robust Control for Inter-Area Oscillations
Robust Control for Inter-Area Oscillations

Author: Katelynn A. Vance

Publisher: LAP Lambert Academic Publishing

Published: 2012-04

Total Pages: 120

ISBN-13: 9783846527160

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In order to reduce the detrimental effects of inter-area oscillations on system stability, it is possible to use Linear Matrix Inequalities (LMIs) to design a multi-objective state feedback control. The LMI optimization comes up with a control law that stabilizes numerous operating conditions simultaneously using a polytopic model of the system. However, the number of cases to be considered is limited by computational complexity and increased chances of infeasibility. In order to circumvent this problem, this paper presents a method for solving multiple polytopic problems having a common base case. The proposed algorithm determines which polytopic control is necessary for a particular contingency and classifies them as belonging to that polytopic domain. The technique was tested on an 8-machine, 13 bus system and provided satisfactory results.

Intelligent Computing Techniques for Smart Energy Systems
Intelligent Computing Techniques for Smart Energy Systems

Author: Akhtar Kalam

Publisher: Springer Nature

Published: 2019-12-16

Total Pages: 1011

ISBN-13: 9811502145

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The book compiles the research works related to smart solutions concept in context to smart energy systems, maintaining electrical grid discipline and resiliency, computational collective intelligence consisted of interaction between smart devices, smart environments and smart interactions, as well as information technology support for such areas. It includes high-quality papers presented in the International Conference on Intelligent Computing Techniques for Smart Energy Systems organized by Manipal University Jaipur. This book will motivate scholars to work in these areas. The book also prophesies their approach to be used for the business and the humanitarian technology development as research proposal to various government organizations for funding approval.

Robust Control in Power Systems
Robust Control in Power Systems

Author: Bikash Pal

Publisher: Springer Science & Business Media

Published: 2006-07-02

Total Pages: 207

ISBN-13: 0387259503

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Robust Control in Power Systems deals with the applications of new techniques in linear system theory to control low frequency oscillations in power systems. The book specifically focuses on the analysis and damping of inter-area oscillations in the systems which are in the range of 0.2-1 Hz. The damping control action is injected through high power electronic devices known as flexible AC transmission system (FACTS) controllers. Three commonly used FACTS controllers: controllable series capacitors (CSCs) controllable phase shifters (CPSs) and static var compensators (SVCs) have been used in this book to control the inter-area oscillations. The overview of linear system theory from the perspective of power system control is explained through examples. The damping control design is formulated as norm optimization problem. The H_infinity, H2 norm of properly defined transfer functions are minimized in linear matrix inequalities (LMI) framework to obtain desired performance and stability robustness. Both centralized and decentralized control structures are used. Usually the transmission of feedback signal from a remote location encounters delays making it difficult to control the system. Smith predictor based approach has been successfully explored in this book as a solution to such a problem. Robust Control in Power Systems will be valuable to academicians in the areas of power, control and system theory, as well as professionals in the power industry.

Synchronized Phasor Measurements and Their Applications
Synchronized Phasor Measurements and Their Applications

Author: A.G. Phadke

Publisher: Springer Science & Business Media

Published: 2008-08-15

Total Pages: 249

ISBN-13: 0387765379

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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.

Advanced Technology in Structural Engineering
Advanced Technology in Structural Engineering

Author: Mohamed Elgaaly

Publisher:

Published: 2000

Total Pages:

ISBN-13:

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This proceedings contains the papers presented at the 2000 Structures Congress & Exposition held on May 8-10, 2000, in Philadelphia, Pennsylvania. The themes include: 14th Analysis & Computational Specialty Conference, Bridges, Buildings, Dynamics/Wind/Seismic, Steel structures, Timber/Composites/Concrete, Practical design & detailing. The goal of the Congress is to cover the advanced technology of structural engineering. Topics range from the latest research developments to practical applications of structural engineering principles.

Fluid Mechanics
Fluid Mechanics

Author: Pijush K. Kundu

Publisher: Academic Press

Published: 2012

Total Pages: 919

ISBN-13: 0123821002

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Suitable for both a first or second course in fluid mechanics at the graduate or advanced undergraduate level, this book presents the study of how fluids behave and interact under various forces and in various applied situations - whether in the liquid or gaseous state or both.