浅谈“六统一”的设计及应用

Study about Design and Application of "Six Reunification"

目前江苏省正在推广按照"六统一"原则提出的典型设计,本文主要探讨了按照"六统一"设计后的220kV线路保护与未按原则之前的不同之处,选取三个问题进行讨论,包括线路电压互感器的普遍使用,两套保护的重合闸配合,母线保护的失灵启动回路等,提出一些在变电二次工作中会遇到的问题,供现场的施工人员参考和借鉴。

Atpresent Jiangsu province is promoted the typical design which according to the principle of ＂six reunification＂,this paper mainly discusses the differences of 220kV line protection that designed according to the principle of ＂six reunification＂and beforeused,Sclectthree problemsto explain,Includes the widely use of line potential transformer,coordination between the twosets of auto-reclosing malfun ction starting circuit of the bused protection.Putforwardsome problemsin the daily relay-protection work,Andprovide reference for the construction workers who are working in the first line.