应用移相法去除相间耦合对MOA泄漏电流测量的影响

Removing the Impact of Phase-to-phase Coupling on Measurement of MOA's Leakage Current Using Phase Removing Method

现场通常以M O A泄漏电流作为判断其状态的参数。在与硬件移相法相比较的基础上,提出了应用软件移相法,可很好地消除一字排列的M O A之间的相间干扰,使泄漏电流的测量更为准确,测试精度可达1%。此方法对相间干扰很大的500kV高压变电站尤为重要。

Measuring the resistive current of MOA is very important for checking dampness of MOA and to indicate the service status of MOA. The paper puts forward a new measurement for leakage current of MOA on the base of being compared with all kinds of measurements. The new means gets rid of the mutual coupling to resistive current of MOA by removing phases in the software.