换流阀冷却系统异步电动机高阻故别与定位

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Abstract Asynchronous motor is one of the important components of the main pump in the valve cooling system. Improving the level of fault identification and instantly locating the fault point are of great value for the valve cooling system. In this paper, a method of online detection of stator high resistance fault based on current unbalance degree is proposed by means of symmetric vector method. Specifically, this paper analyzes the index parameters to determine the fault phase and fault severity under the conditions of stator star connection and delta connection. Furthermore, by setting the voltage monitoring location reasonably, the fault detection range can be further reduced. Finally, the effectiveness of the proposed method is verified through simulation test and a case analysis.

Key words： valve cooling system main pump asynchronous motor stator high resistance fault symmetrical vector method current unbalance degree

Received: 15 July 2024

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	Articles by authors
	DONG Xi
	JIANG Nan
	ZHANG Guohua
	GAO Shengfu
	LIU Dongchuan

Cite this article:

DONG Xi,JIANG Nan,ZHANG Guohua等. The stator high resistance fault identification and localization of asynchronous motors applied in valve cooling system[J]. Electrical Engineering, 2024, 25(11): 15-21.

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https://dqjs.cesmedia.cn/EN/Y2024/V25/I11/15

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