Testing of Relay Protection for Main Equipment in Power Systems

Author: Li Yuhai, Liu Xin, Li Peng
Publisher:
Publish Date: 2005-07-01
Features: This book proposes adjustment and testing projects, debugging methods, test connections, record tables, analysis of test results and requirements, identification and analysis of existing problems, and handling methods for microcomputer-based power main equipment protection widely used in domestic production (including generator protection, transformer protection, reactor protection, motor protection, and busbar protection). To facilitate debugging and deepen the understanding of testers, the basic concepts of a certain protection function are briefly introduced before discussing its debugging, such as constituent principles, action equations, action characteristics, and logic diagrams. According to actual field requirements, this book also proposes principles for setting calculation of protection settings, simplified calculation formulas, and value selection suggestions for various main equipment protections. Additionally, it discusses the transmission of fault quantities through transformers, the characteristics of autotransformer protection, and some technical issues related to main equipment protection. The book is divided into ten chapters. Chapter 1 briefly introduces various microcomputer-based main equipment protections widely used domestically; Chapters 2 to 6 and 10 discuss the debugging issues of the aforementioned main equipment protections; Chapter 7 elaborates on the setting calculation of main equipment protections; Chapter 8 introduces testing, measurement, and setting of protections for main equipment during startup; and Chapter 9 discusses the transmission of fault components through transformers and some technical issues. This book can serve as a reference for engineering technicians, technicians, and technical workers in relay protection-related fields of power generation, power supply, power testing research, power operation management, and main equipment manufacturing units, as well as training materials for improving technical skills. Additionally, it can also serve as a technical reference for personnel in design departments and universities and colleges.