The transient overvoltage on the voltage dividing capacitor has a definite harmfulness to the voltage dividing capacitance of CVT at closing operation of power network.The transient simulation model of CVT by the use of Matlab/Simulink is set up to simulate transient overvoltage of the opening capacitor at different closing phase angles and

at the same time

to study influence of equivalent resistance of line

inductance and CVT parameters on the transient overvoltage on the dividing capacitor and the influence rule of those parameters on the transient over voltage is obtained.The simulation result has significant value in mitigation study of dividing capacitance on CVT

reducing fault rate of the dividing capacitor and operation of CVT.