Abstract：High voltage circuit breaker is an essential electrical equipment in the power system. The integrity of tripping and closing circuit is necessary to ensure the normal operation of the circuit breaker. The on-line monitoring of the tripping and closing circuit is the premise of realizing the predictive maintenance of the tripping and closing circuit, and the key to ensure the safety and reliability of the power grid. This paper has analyzes the operating state of tripping and closing circuit and the change of loop current, and design the monitoring system of tripping and closing circuit. This system consists of current acquisition circuit, analog-to-digital conversion circuit, main control system and communication circuit, and can complete the operation of current acquisition, quantification, control, filtering and sending. Cooperating with on-line monitoring software, it can realize real-time monitoring and fault alarm of tripping and closing circuit.
董中和, 宋晓航, 唐昱恒, 王盛威, 王义波. 智能变电站跳合闸监测系统研究与应用[J]. 电气技术, 2021, 22(1): 39-46.
DONG Zhonghe, SONG Xiaohang, TANG Yuheng, WANG Shengwei, WANG Yibo. Research and application of the on-line monitoring system for tripping and closing circuit in intelligent substation. Electrical Engineering, 2021, 22(1): 39-46.
2021, Vol. 22 
