As for the fault feature and the shortcoming of offline test of power capacitor

in this paper

the fault diagnosis method taking such parameters as operation voltage

capacitance

unbalance signal etc.as condition monitoring and measurement are proposed

and the fault identification and early warning scheme is designed normally with combination of related rules.The internal fault of power capacitor is simulated and tested by Matlab/Simulink platform

the variation law of the state quantity of the capacitor under different faults are studied

the relationship between the change of the state quantity and the fault is summarized and the fault locating method of power capacitor based on differential idea is proposed so to achieve fast identification and location of the fault and instruct the draw-up of the maintenance plan.