一种独立式电流互感器故障分析及解决办法
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摘要
独立式电流互感器应用于敞开变电站中,其一次绕组串接在线路中,稳定可靠的电流互感器能够准确的反映一次线路的状况,对系统的可靠运行有着不可替代的作用,本文通过一起500kV电流互感器二次电流三相不平衡的故障分析,判断是一次电流存在分流现象,通过试验验证及解体分析,证明了判断的正确性,同时根据故障情况,提出相应解决方案,有效地解决了电流互感器二次电流不平衡的问题。
Independent type current transformer is applied to open the transformer substation,the concatenated primary winding in the circuit,stable and reliable current transformer can accurately reflect the status of a line,has an irreplaceable role for the reliable operation of the system,based on the 500 kv current transformer with secondary current of three-phase unbalanced fault analysis,judgment is a current shunt phenomenon,through test and analysis of collapse,proved the correctness of the judgment,at the same time according to the fault condition,put forward the corresponding solutions,effectively solve the current transformer secondary current imbalances.
Independent type current transformer is applied to open the transformer substation,the concatenated primary winding in the circuit,stable and reliable current transformer can accurately reflect the status of a line,has an irreplaceable role for the reliable operation of the system,based on the 500 kv current transformer with secondary current of three-phase unbalanced fault analysis,judgment is a current shunt phenomenon,through test and analysis of collapse,proved the correctness of the judgment,at the same time according to the fault condition,put forward the corresponding solutions,effectively solve the current transformer secondary current imbalances.
引文
[1]肖耀荣,高祖绵.互感器原理与设计基础[M].沈阳:辽宁科学技术出版社,2003:231-237.
[2]凌子恕.高压互感器技术手册[M].北京:中国电力科学出版社,2005:196-199.
[2]凌子恕.高压互感器技术手册[M].北京:中国电力科学出版社,2005:196-199.