Study on the Switching Over-voltage of circuit breakers in 500kV line base on ATP-EMTP
In this paper,a model of 500kV circuit breaker based on ATP-EMTP is estabhshed,and the switching over-voltage is simulated.The effect of closing resistor to the maximum over-voltage and the 2% statistical over-voltage is studied.Theory calculation of switching over-voltage is important to parameter selection of circuit breaker and practical system security operation.