Hunan Electric Power ›› 2022, Vol. 42 ›› Issue (5): 90-94.doi: 10.3969/j.issn.1008-0198.2022.05.016

• Experience and Discussion • Previous Articles     Next Articles

Measures of Performance Optimization and Improvement of Three-Phase Inconsistent Protection for Circuit Breaker

GUO Yang1, CHEN Hao2, GAO Shiyu1, GU Hao1, LI Yifeng1   

  1. 1. State Grid Jiangsu Electric Power Company Limited EHV Branch Company, Nanjing 211102,China;
    2. State Grid Jiangsu Electric Power Company Limited Nanjing Power Supply Branch company, Nanjing 210019,China
  • Received:2022-06-29 Revised:2022-07-20 Online:2022-10-25 Published:2022-11-16

Abstract: Based on the typical secondary circuit, this paper introduces the principle of three-phase inconsistent protection in high-voltage power system, analyzes the causes of protection maloperation from the aspects of circuit insulation fault, artificial factors, improper setting of pressure plate and so on, and puts forword the optimization and improvement measures. The application practice shows that the optimized measures are feasible and effective, and the performance of three-phase inconsistent protection is greatly improved.

Key words: breaker, three-phase inconsistent protection, optimization and improvement measures, UHV substation

CLC Number: