轧钢变电站110kV系统母线保护改造及应用

Reconstruction and Application of Bus Bar Protection of 110 kV System for Substation of Steel Rolling

通过改造实现轧钢变110 kV系统母线保护新型微机化。采用"电压小母线心脏搭桥技术"实现二次电压小母线成功对接,同时采用新、旧母差二次回路嫁接法,实现母线保护二次小线连接正确无误,提高了轧钢变110 kV系统母线保护安全性和可靠性。

Bus bar protection of the 110 kV system for the substation of steel rolling was controlled by new microcomputers after reconstruction. Secondary small bus bar was successfully connected by ＂heart bridging technique of voltage small bus bar＂. At the same time, secondary small bus bar of bus bar protection was connected correctly by secondary circuit connecting method of differences of new and old bus bars. Safety and reliability of bus bar protection of the 110 kV system for the substation of steel rolling were increased.