摘要
母线电压互感器(PT)电压空开发生故障时,需要冗长的倒闸操作才能进行空开检修,严重影响了异常电压的恢复时间。基于回路并接原理,提出一种带电更换PT电压空开的检修基座。该文阐述了装置原理的三个组成部分,进行了元件选型、装置搭建和操作流程编制的设计。经过仿真变的功能测试和变电站的现场安装,该装置能够在不倒闸操作的前提下更换缺陷电压空开,精简了检修工作的流程和时间,极大地降低了此类空开故障对电网运行带来的风险。
When the voltage air switch of busbar potential transformer(PT) breaks down, it takes long time of switching operation before maintenance, which seriously delays the restoration time. Based on the principle of multiple circuit, a live replacement maintenance device for PT voltage air switch is proposed. The following aspects are involved in the design of the device: the principle of device, component selection, device assembly and operation process. Through functional test in simulation substation and on-site installation, it is proved that the failed air switch can be lively replaced by the device without switching operation, which greatly reduces the risk on power grid caused by such failed air switch.
出处
《电测与仪表》
北大核心
2016年第S1期208-213,共6页
Electrical Measurement & Instrumentation
基金
国网浙江省电力公司科技项目(5211WZ160030)
关键词
空气开关
电压互感器
带电更换
倒闸操作
air switch
potential transformer
live replacement
switching operation
