Evaluation of MOSA condition using leakage current method
We have evaluated MOSA condition using leakage current methods. The methods were analyzed depending on fluctuation and presence of voltage harmonics. Calculations were performed for a simplified equivalent circuit of MOSA. Basic harmonic of the resistive component is the most efficient for MOSA diagnostics. The same efficiency is achieved using basic harmonic of power loss.
condition leakage current diagnostics metal-oxide surge arrester monitoring