断路器弹簧操动机构分/合闸弹簧的状态诊断

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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.

Key words： spring operating mechanism characteristic parameters the effective output of motor the opening or closing speed state of spring diagnosis method

Received: 19 January 2021

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	Articles by authors
	GUO Bowen
	LI Nan
	LI Songyuan
	LI Lin
	ZHAO Cong

Cite this article:

GUO Bowen,LI Nan,LI Songyuan等. State diagnosis for closing/opening spring in the spring operating mechanism of circuit breaker[J]. Electrical Engineering, 2021, 22(12): 57-62.

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http://dqjs.cesmedia.cn/EN/Y2021/V22/I12/57

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