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Power System Protective Relaying
This book focuses on protective relaying, which is an indispensable part of electrical power systems. The recent advancements in protective relaying are being dictated by MMPRs (microprocessor-based multifunction relays). The text covers smart grids, integration of wind and solar generation, microgrids, and MMPRs as the driving aspects of innovations in protective relaying. Topics such as cybersecurity and instrument transformers are also explored. Many case studies and practical examples are included to emphasize real-world applications.
1. Modern Protective Relaying: An Overview
2. Protective Relays
3. Instrument Transformers
4. Microprocessor-Based Multifunction Relays
5. Current Interruption Devices and Battery Systems
6. Overcurrent Protection: Ideal and Practical
7. System Grounding
8. Ground Fault Protection
9. Bus-Bar Protection and Autotransfer of Loads
10. Motor Protection
11. Generator Protection
12. Transformer Reactor and Shunt Capacitor Bank Protection
13. Protection of Lines
14. Pilot Protection
15. Power System Stability
16. Substation Automation and Communication Protocols Including IEC 61850
17. Protective Relaying for Arc-Flash Reduction
\"This book is an excellent compilation of all the various topics of protective relaying. The focus is on protection systems and functions applied in various parts of the power system. The underlying fundamentals of power systems are not included in this book since they are handled in the other volumes of the handbook series. In the book, recent technological developments have been successfully taken into account, and there is even a chapter devoted to modern microprocessor-based multifunction relays. The book is based on the North American system design and standards but provides a vast amount of knowledge to engineers and students of this specific field all over the world.\" — Kimmo Kauhaniemi, University of Vaasa, Finland
Dr. J.C. Das is currently the President of Power System Studies, Inc. Snellville, USA. He headed the Electrical Power Systems Analysis Department at AMEC Inc., (now AMEC Foster Wheeler, Inc.) Tucker, GA, USA, for the last 30 years. He has varied experience in the utility industry, industrial establishments, hydroelectric generation, and atomic energy. He is responsible for power system studies, including short-circuit, load flow, harmonics, stability, arc-flash hazard, grounding, switching transients, EMTP simulations, and protective relaying. He conducts courses for continuing education in power systems and has authored or coauthored approximately 65 technical publications, six textbooks, and over 7,000 total published pages.
eBook
Protective relaying : principles and applications
\"Maintaining the features that sent the previous edition into 10 printings, Protective Relaying, Second Edition covers large and small utility systems as well as industrial and commercial systems ... provides a completely new treatment of generator protection in compliance with the most recent governmental rules and regulations ... supplies expanded information on symmetrical components ... delineates individual protection practices for all equipment components ... furnishes an overview of power system grounding, including system ferroresonance and safety grounding basics ... analyzes power system performance during abnormal conditions ... describes the relationship of input source performance to protection ... and more.\"--Jacket.
Book
Characterization of the Electrical Environment
A communication system must have adequate electrical protection in order to meet the reliability standards for commercially acceptable service and to keep down maintenance expenses. This report characterizes, from the viewpoint of electrical protection and coordination, the conditions of the electrical environment to which communication facilities are exposed. It gives consideration to both present and anticipated future conditions, and covers such topics as the effects of lightning, interference from power networks, electric shock, earth potential gradients, corrosion, over-voltage in AC power utilization circuits,her and electromagnetic pulses.
Characterization of the Electrical Environment is a current reference on the design factors required to ensure reliable performance of communication facilities under field operating conditions. It will be useful as a manual for practicing engineers in telecommunications, and as a tutorial textbook in engineering schools in North America, Europe, and elsewhere.
eBook
Computer relaying for power systems
Since publication of the first edition of Computer Relaying for Power Systems in 1988, computer relays have been widely accepted by power engineers throughout the world and in many countries they are now the protective devices of choice.
eBook
Power System Relaying (4th Edition)
With emphasis on power system protection from the network operator perspective, this classic textbook explains the fundamentals of relaying and power system phenomena including stability, protection and reliability. The Fourth Edition brings coverage up-to-date with important advancements in protective relaying due to significant changes in the conventional electric power system that will integrate renewable forms of energy and, in some countries, adoption of the Smart Grid initiative.
eBook
Artificial intelligence applications in electrical transmission and distribution systems protection
\"Artificial Intelligence (AI) can successfully help in solving real-world problems in power transmission and distribution systems as AI-based schemes are fast, adaptive, and robust and are applicable without any knowledge of the system parameters. This book considers the application of AI methods for the protection of different types and topologies of transmission and distribution lines. It explains the latest pattern-recognition- based methods as applicable to detection, classification, and location of a fault in the transmission and distribution lines, and to manage smart power systems including all the pertinent aspects. Features: Provides essential insight on uses of different AI techniques for pattern recognition, classification, prediction, and estimation, exclusive to power system protection issues. Presents introduction to enhanced electricity system analysis using decision-making tools. Covers AI Applications in different protective relaying functions. Discusses Issues and challenges in the protection of transmission and distribution systems. Includes dedicated chapter on case studies, and applications. This book is aimed at Graduate students, Researchers and Professionals in Electrical Power System Protection, Stability, and Smart Grids\"-- Provided by publisher.
Book
Automation of cycles of protections’ non-traditional tests using traditional injectors and electromagnetic transient programs via Python
This article shows a method to perform cycles of non-traditional tests to electric power system protections, in an automated way, using traditional injectors and Electro-Magnetic Transient Software (EMTS) via Python. Non-traditional tests of protective relays, using non-sinusoidal current and voltage waveforms computed from an EMTS, have been performed since the invention of programmable injectors but different non-obvious steps are necessary for this purpose (the obtained files from the EMTS must be converted to a standardized format to be transferred to the injector, injected to the relay under test, and the relay contacts have to be monitored in order to record their operation or non-operation, and/or to record their operation time). In order to easily perform repetitive cycles of these non-traditional tests, with different conditions of simulation in the EMTS, these steps were automated using Python, which is simply applied to control the injector and the EMTS in a loop. This method is suitable for different practical cases, and it is useful to avoid some costs and disadvantages related to the use of real-time simulation (which probably is the most known alternative to perform these cycles of tests). Herein, the obtainment of tripping times of distance protections as a function of fault location and source impedance in case of a series-compensated line is shown as an example. The results were obtained for mho and quadrilateral characteristics of three commercial relays, using a very basic injector and a royalty-free EMTS in order to illustrate that the tests can be performed with very low resources. The proposed method is considerably less expensive than the use of real-time digital simulators, and considerably faster than the use of the same resources without the proposed automation, which currently are the main available methods for these tests.
Journal Article