In this paper

the theoretical basis and related measures on reducing the amplitude of single phase arc grounding overvoltage and suppressing arc reignition by the interphase capacitance is proposed.The theoretical relations of overvoltage amplitude of single phase arc grounding non-fault

recovery voltage amplitude of faulty phase

average speed rate of recovery voltage of faulty phase and system parameters is derived firstly.The important rule on reducing the amplitude of arc grounding overvoltage and suppressing arc reignition by the interphase capacitance is proposed with combination of theory proposed in this paper.Matlab software is used to set up to improve Mayr dynamic arc simulation model so to simulate the conclusion and verify both correctness and reliability of the conclusion in the paper.Finally

the issue of solving reactive power compensation and arc grounding simultaneously by the distribution network with shunt capacitor under the premise of not adding additional capacitor configuration is analyzed by the actual example

which has instructive significance for the safe and economic operation of distribution network.