Abstract：In order to ensure safe and reliable operation of the spring operating mechanism, a method of spring’s state diagnosis in spring operating mechanism is proposed. Through analyzing the spring’s operation characteristic in storing process and in closing/opening process, the effective output of motor in storing process and the closing/opening speed are extracted, which are used as characteristic parameters to diagnose spring’s state. The diagnosis process of closing/opening spring’s state is specifically analyzed and described based on the judgment of characteristic parameters. The diagnosis system of closing/opening spring’s state is designed, and it is verified by combining with the CT20 spring operating mechanism. Through the contrast experiment of old and new closing/opening spring, the proposed diagnosis method for opening/closing spring is validated to be simple and accurate, and the result of the diagnosis is very well.
郭博文, 李楠, 李松原, 李琳, 赵聪. 断路器弹簧操动机构分/合闸弹簧的状态诊断[J]. 电气技术, 2021, 22(12): 57-62.
GUO Bowen, LI Nan, LI Songyuan, LI Lin, ZHAO Cong. State diagnosis for closing/opening spring in the spring operating mechanism of circuit breaker. Electrical Engineering, 2021, 22(12): 57-62.
2021, Vol. 22 
