The current situation of the investigation and improvement of the arc extinguishing coil fault

The arc extinguishing coil is a compensation device for small current grounding system. By the arc extinguishing coil grounding directly affects the safety, reliability and stability of substation operation, has become the new era of substation operation and maintenance management of the top priority. But by environmental factors, wiring methods, etc., the arc extinguishing coil caused by arc grounding, ferromagnetic resonance and other safety accidents occur from time to time. In this paper, we investigate and analyze the current situation of arc extinguishing coil failure and propose improvement measures to reduce the defect rate of arc extinguishing coil, in order to form a scientific and efficient operation and maintenance management program and improve the safety performance of substations.