换流站有载调压开关油流继电器动作分析

Analysis and Dispose of OLTC Oil Flow Relay Tripping in Converter Station

对高岭换流站一起油流继电器故障情况进行了分析,指出故障原因是由于油中游离碳及杂质过多,油流继电器所使用的干簧管引出线根部存在绝缘裸露现象,在直流电压作用下吸附游离碳及杂质导致节点误发信号,并对现有结构油流继电器提出了改进措施。

Oil flow relay failure occurred to aged convertor station is analysed,the cause of the problem is due to the existence of too much free carbon and impurities in the oil. The root of reed switch used by this oil flow rely lead wire has no insulation,the adsorption of the free carbon and impurities under DC voltage caused error signal of the node. It puts forward some improvement measures for exisiting structural oil flow relay.