Research into the Over - grade Tripping in Plant Power Supply System

Li Zhenqian　Du Zhongtang　Zhao Peng（Jinxi Industrial Group Co.，Ltd.，Taiyuan 030027，China）

 

作者信息

李振乾，男，晋西工业集团有限责任公司，助理电气工程师。

杜忠堂，男，晋西工业集团有限责任公司，高级电气工程师。

赵　朋，男，晋西工业集团有限责任公司，助理电气工程师。

 

Abstract In this paper, an applicable relay protection setting solution is presented based on the analysis of the characteristics of plant power supply system to deal with the problems of over - grade tripping caused from time to time by unsatisfactory relay protection setting conducted by the employed technicians of plants who know little about the difference of power supply systems between plant and administration of power supply.

Key words　Over - grade tripping 　Short - circuit current　Fault record　Microcomputer protection　Current protection

 

 

摘　要　工厂供电系统有别于供电局供电系统，由于工厂继电保护的整定大多由企业自己的技术人员来做，所以整定的最终效果差别很大，越级跳闸事故时有发生。分析工厂供电系统的特点，提出行之有效的继电保护整定方案。

关键词　越级跳闸　短路电流　故障录波　微机保护　电流保护