As for the issue of frequent fault of grading capacitor for the 500 k V circuit breaker in the main power network

in this paper

the function and thermal loss mechanism of the grading capacitor for the500 k V circuit breaker is studied. The fault features of such grading capacitors as ceramic filled with SF6

oil immersed and oil-paper capacitor are analyzed with combination of recently occurred several faults and

on the basis of which

effective preventive measures on the capacitor for the 500 k V circuit breaker is proposed from the perspective of equipment safety

operation and maintenance and personnel security.