Research Status of Contact on Breaking Performance of High Voltage Circuit Breaker

Circuit breaker is the key control and protective equipment in the power system, widely used in various fields of the national economy, accurate assessment of circuit breaker breaking performance, better establishment of new energy as the main body of the new power system, strengthen the safe and reliable operation of the power system is of great significance. Contact is the core component of circuit breaker responsible for making and breaking circuit, and its performance directly affects the breaking ability of circuit breaker. This paper reviews the current research status and direction development of high-voltage circuit breaker. Based on the breaking requirements of high-voltage circuit breaker, the influence law of contact characteristics on the breaking performance is summarized, and the research progress of contact in nanometer preparation and doping modification technology is analyzed. The future development direction and problems of contact materials are prospected.