35 kV开关柜与保护装置二次重载转接端子的设计与应用

Design and Application of Secondary and Overload Transfer Terminal in 35 kV Switch Cabinet and Relay Protection Device

在传统的35 kV继电保护装置改造过程中,存在停电时间长,易出现接线错误等问题。针对上述问题,设计了二次重载转接端子。在35 kV保护装置改造时,只需将旧保护装置拆除,将新保护装置安装在原有位置,再插入转接端子即可,不需要拆除和安装二次接线。将该转接端子应用于薛家湾供电局220 kV川掌变电站35 kV开关柜保护装置改造,准确率高,极大地缩短了安装时间,经济效益较好。

In the process of traditional transformation of 35 kV relay protection device, many problems as along outage time, wiring error appear. Secondary heavy load switching terminal is designed to deal with the problems. Remove the oht protective equipments and install the new protection device on the original position, and insert the switch terminal.The transformation need not to remove and install the secondary wiring. This transfer terminal is used in the switch cabinet of 35 kV protection equipment of 220 kV ChuanZhang substation, with the charactoristics of high rate of correctness, which can reduce the working time and achieve a good economic results.