变压器中性点隔离装置电流突变异常分析

Analysis on Abnormal Current Mutation of Transformer Neutral Point Isolation Device

当直流输电系统借助大地回流的形式运作时,其中的运行电流会直接通过大地进行流通,会使变压器中性点的直流电流逐渐增大,也会使变压器的运行状况出现一系列问题,严重时会损坏变压器。为此,对变压器中性点隔离装置进行研究很有必要。本文结合现场实际,对变压器中性点隔离装置的电流突变异常等情况进行了分析和讨论。

When the DC transmission system operates with the help of the earth return current circuit,the operating current will flow directly through the earth.It can gradually increase the DC current at the neutral point of the transformer,also can cause a series of problems in the operation of the transformer,and also can damage the transformer in serious cases.Therefore,it is necessary to study the transformer neutral point isolation device.In this paper,the abnormal current mutation of transformer neutral point isolation device is analyzed and discussed.