Effect of Voltage Harmonics on Test Method of MOA Leakage Current

Power system voltage harmonics not only affect the capacitive component,but also affect the resistive component.And the influence of voltage harmonics on the two basic detecting method-compensation method and harmonic analysis method is analyzed,and the compensation method is simulating calculated,the effect of the capacitive harmonic has to be considered for the compensation method,and this effect can be avoided by the harmonic analysis method,but neither of them can eliminate the component from the voltage harmonics in the resistive current,the known methods of eliminating voltage-harmonic influence are summarized,the values of resistive current and its harmonic content can be calculated based on the measured resistive first-harmonic current,and the elimination of the fundamental harmonic component of resistive current,the elimination of which from system voltage harmonic interference part in resistive current needs further study.