一次线路单相接地故障保护动作行为分析

作者对一次系统实验时的A相单相瞬时性接地短路故障进行了分析,主要通过介绍系统接线方式,用序网图进行系统单相接地短路时的短路电流分析计算,故障录波图的分析,保护装置动作报文的分析等几个方面进行介绍。作者希望通过本文加强超高压继电保护工作者对750kV线路保护功能配置、简单的故障分析等知识的掌握,希望对广大继电保护工作者日常分析事故有所帮助。

The author analyzes an A-phase temporary earth fault of a system experiment. Mainly through the introduction of the system＇s wiring way, Analyzing and calculating short-circuit current of the system single-phase earth fault by sequence network diagram, introducing the analysis of the fault recorder diagram and the protective equipment tripping report, and so on. The author hopes through this article, to strengthen the grasp of the knowledge of the 750kV line protection functional distribution and simply fault analysis for the extra high voltage protective relaying workers, can help analyzing the daily accident for the most protective relaying workers.