Protection of Electricity Distribution Networks

by Juan M. Gers, Edward Holmes

Overview

High quality electrical service is key to power systems around the world, particularly in utilities and industrial facilities. Both voltage and grid frequency must be kept within tight limits to maintain functioning of critical infrastructure. The growing use of renewable power of intermittent character is adding to that challenge.

One of the keys to achieving quality service is the protection system, which needs to be reliable, fast and with a good cost/benefit ratio. It consists of various components, including relays, circuit breakers and fuses. An understanding of the different behaviours of these components in the face of malfunctions, and of countermeasures, is needed.

This book has established itself as a classic work in its field, allowing the reader to easily follow the ideas explored. It provides an overview of most aspects of electrical protections, with emphasis on distribution systems; but protection of generation and transmission systems are also addressed.

For this 4th edition, new topics have been added, such as protection of renewable power plants and transient stability analysis. It offers a thorough revision of the material, particularly the numerical type of relays, protective functions, control, measurement, communications and oscillography features. Most chapters have illustrative examples using MATLAB or PSAT (Power System Analysis Tools). This work remains essential reading for researchers, utility engineers, design, maintenance and consulting engineers as well as for instructors and senior students.

Product Details

ISBN-13:	9781839532702
Publisher:	The Institution of Engineering and Technology
Publication date:	02/10/2022
Series:	Energy Engineering
Edition description:	4th ed.
Pages:	488
Product dimensions:	6.14(w) x 9.21(h) x (d)

About the Author

Juan M. Gers is the president of GERS, a consulting engineering company specialized in power systems. He is the author of a book entitled Distribution System Analysis and Automation, published by the IET in 2013, and is the author or co-author of over 40 technical papers. Currently he participates in several groups of the Power System Relaying Committee - PSRC of the IEEE.

Edward Holmes graduated from Queen Mary Universityof London in 1950 and joined The Central Electricity Generating Board, where he worked for over 35 years. He was a Fellow of the IEE (now the IET) and a Chartered Engineer. He passed away in 2006.

Table of Contents

• Chapter 1: Introduction
• Chapter 2: Calculation of short circuit currents
• Chapter 3: Classification and function of relays
• Chapter 4: Current and voltage transformers
• Chapter 5: Overcurrent protection
• Chapter 6: Fuses, reclosers and sectionalisers
• Chapter 7: Directional overcurrent relays
• Chapter 8: Differential protection
• Chapter 9: Distance protection
• Chapter 10: Protection of low-voltage systems
• Chapter 11: Industrial plant load shedding
• Chapter 12: Protection schemes and substation design diagrams
• Chapter 13: Communication networks for power systems automation
• Chapter 14: Installation, testing and maintenance of protection systems
• Chapter 15: Protection of distributed generation systems
• Chapter 16: Impact of stability conditions on protective relaying
• Appendix: Solutions to exercises

Editorial Reviews

'Distributed energy resources connected to the distribution system, as well as the requirements for reducing the fault clearing time are some of the drivers for a different approach to distribution systems protection. That is why the third edition of Protection of Electricity Distribution Networks is a timely update of the popular book that represents a practical resource for graduate students, practicing engineers and many others with interest in the subject. The authors of the book are two engineers with huge practical and teaching experience that well understand the subject matter, as well as how to present it in an understandable manner.'

Pac World