While the system is equipped with Petersen coil caused by the switching operation can prevent a different period , single-phase disconnection and other factors neutral point displacement , so that the neutral point voltage is too high, the threat of insulation safety equipment . Also in the normal operation of the power grid , but also effectively prevent resonance over-voltage , prevent system damage caused thereby , better protection of system security , stability, and high-quality operation. Summary of small current grounding system after the formation of arc suppression coil compensation compensation network system , in order to better prevent arc short-circuiting the system of single phase , which is to ensure security of supply , improve reliability and power quality .In the paper, small current grounding system Petersen coil with the compensation adjustment is carried out and some analysis, study and research is done in order to improve the operating personnel awareness and emphasis on small current grounding system , and better ensure the safety of the small current grounding system , stable operation.
Simulation and analysis of single-phase grounding fault in small current grounding system