220kV断路器液压低闭锁合闸功能的实现

Realization of Interlocking Closer Function under Abnormal Pressure for 220 kV Breaker

为了满足LW 6 2 2 0 (FA2 2 52 )型SF6断路器在液压低于规定值时闭锁合闸的要求 ,我们对FCX 12型分相操作箱的闭锁合闸回路进行了改进。在未增加其他辅助设备的前提下 ,通过对继电器逻辑回路的调整 ,以最简单有效的方法 ,实现了LW 6 2 2 0 (FA2 2 52 )型SF6断路器 (未配置汇控柜 )的液压低闭锁合闸功能。运行实践证明 。

In order to satisfy the requirement of LW6 220(FA2 252) Breaker for interlocking closer when the oil pressure is under defined value,the interlocking closer circuits for single phase operation in FCX 12 Relay Box have to be improved.A method for realization of interlocking closer function under abnormal pressure is presented,which only changes the logical relations of the relays in the Relay Box without adding any other extra accessory devices.The practice shows that the method is simple,effective and reliable.