Abstract:There are many series compensation capacitor element on the platform, and the platform is larger than the 500kV bus. The capacitance to ground is larger too. In the equipotential close breaker, the arc intensity than the ordinary 500kV of equipotential pull us and produce big arc breaker. In actual operation, there have been many times to protect exit, protection malfunction and so on. This paper through to the breaker points or the classify, distinguish with the equipotential bonding breaker close the difference. And analyze the actual interference, proposed in view of the terminal box of shielding requirements, device grounding method and other improvements, for series compensation platform of anti-jamming solution is put forward.