This book connects the theory of protection and control with practical applications of protection equipment. Covers basic theory, digital algorithms for signal filtering, plus advantages and drawbacks of fuzzy logic-based schemes, neural networks and more.

Digital Signal Processing in Power System Protection and Control bridges the gap between the theory of protection and control and the practical applications of protection equipment. Understanding how protection functions is crucial not only for equipment developers and manufacturers, but also for their users who need to install, set and operate the protection devices in an appropriate manner.

After introductory chapters related to protection technology and functions, Digital Signal Processing in Power System Protection and Control presents the digital algorithms for signal filtering, followed by measurement algorithms of the most commonly-used protection criteria values and decision-making methods in protective relays. A large part of the book is devoted to the basic theory and applications of artificial intelligence techniques for protection and control. Fuzzy logic based schemes, artificial neural networks, expert systems and genetic algorithms with their advantages and drawbacks are discussed. AI techniques are compared and it is also shown how they can be combined to eliminate the disadvantages and magnify the useful features of particular techniques.

The information provided in Digital Signal Processing in Power System Protection and Control can be useful for protection engineers working in utilities at various levels of the electricity network, as well as for students of electrical engineering, especially electrical power engineering. It may also be helpful for other readers who want to get acquainted with and to apply the filtering, measuring and decision-making algorithms for purposes other than protection and control, everywhere fast and on-line signal analysis is needed for proper functioning of the apparatus.

Illustrates theory with many computational examples Includes examples of the application of algorithms for power system protection Pays particular attention to applications of those intelligent approaches and paradigms that have great potential for improving the operation of protective devices

Autorentext

Waldemar Rebizant is Assc. Prof. at the Faculty of Electrical Engineering, Wroclaw University of Technology, Wroclaw, Poland, and Vice Dean for Development and International Cooperation. His research areas include: power system protection and control, digital signal processing, applications of artificial intelligence, digital measurements, adaptive protection schemes, analysis of power system transients, digital simulation and voltage stability. He is the author of more than 130 papers published in journals and conference proceedings. He is a Humboldt Foundation Research Fellow and Senior Member of IEEE PES.

Janusz Szafran is Full Prof. at the Faculty of Electrical Engineering, Wroclaw University of Technology, Wroclaw, Poland; former Dean of the Faculty and Vice Rector of WUT for Teaching; and Doctor Honoris Causa of the Otto-von-Guericke-University Magdeburg, Germany. He has been active in the field of protection and control for 40 years and is a specialist in digital filtering and measuring algorithms. He is the author of one book and over 160 publications. He is a member of the IEEE PES and the Polish Association of Electrical Engineers.

Andrzej Wiszniewski is Full Prof. at the Faculty of Electrical Engineering, Wroclaw University of Technology, Wroclaw, Poland. He has been working in the field of power apparatus and systems all his life, being a specialist in the protection and control of power systems. He is the author of nine books and more than 140 scientific publications. Always attached to Wroclaw University of Technology, he became its rector and held this position for two terms (1990 1996). In 1997 he took the position of the Minister for Science, which he held for four years. Prof. Wiszniewski is a Distinguished Member of CIGRE and an Honorary Member of the Polish Association of Electrical Engineers.

Inhalt

1. Introduction.- 2. Abnormal States in Power Systems and Criteria for Their Recognition.- 3. Hardware and Functional Development of Protection Devices and Systems.- 4. Fundamentals of System Analysis and Synthesis.- 5. Infinite Impulse Response Filters.- 6. Finite Impulse Response Filters.- 7. Correction of Errors Introduced by Instrument Transformers.- 8. Measurement Algorithms for Digital Protection.- 9. Characteristics of Measurement of Criterion Values and Adaptive Algorithms.- 10. Decision Making in Protective Relays.- 11. Elements of Fuzzy Logic in Protective Relays.- 12. Application of Artificial Neural Networks.- 13. Genetic and Evolutionary Algorithms for PSP.- 14. Expert Systems.- 15. Artificial Intelligence Summary and Hybrid Schemes.