The Influence of Interphase Interference to The Sampling Method Based on Voltage-dividing Capacitor

Capacitive equipments are very important in our power system. So on-line monitoring of power equipments becomes necessary. In the on-line monitoring system, voltage-dividing capacitor often take place the role of sampling unit. But interphase interference can influence the accuracy of detection. In this paper, we introduce the principle of sampling based on voltage-dividing capacitor. And set up the model of interphase interference. Finally, the analysis of interphase interference is processed, the result of simulation prove the sampling method of voltage-dividing capacitor is accurately