Analysis of Resonance Influence of Capacitor Voltage Transformer and Protective Measures

摘要

In view of the frequent occurrence of abnormal voltage of capacitive voltage transformer in the power grid, this article has deeply studied the application of resonance mechanism in capacitive voltage transformer and the analysis of fault influence, combined with the case, the phenomenon and characteristics of the detuning failure of the compensating reactance series resonance and the resonant damper parallel resonance are analyzed. The reasons and characteristics of the two resonant circuit failures are summarized for the reference of field technicians. Finally, this article puts forward effective protective measures for the operation and maintenance of capacitor voltage transformers.