Development and Current Status of Low-Carbon High-Voltage Large-Capacity Circuit Breaker

The current situation of high voltage circuit breaker above 110KV voltage level is analyzed emphatically, and the development trend and current research situation of low-carbonization high voltage circuit breaker are presented. The paper focuses on the interruption theoretical basis of hybrid circuit breaker, dynamic insulation characteristics and the operating mechanism and the control system of hybrid circuit breaker for three aspects. Based on quantifying the capacity gain characteristics of hybrid circuit breaker and solving the operating mechanism synchronization synergy, hybrid circuit breaker, consist of SF6 interrupter and vacuum interrupter, is a reasonable choice to achieve high-voltage large-capacity circuit breaker low-carbonization at this stage.