一种直流绝缘诊断装置及其检测方法

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Abstract DC insulation decline of the equipment in substation or power plant is a common fault. The insulation line selection and investigation of DC power supply system is a difficult point that puzzles operation and maintenance personnel. This paper introduces a DC insulation diagnostic device and its detection method. The device is mainly composed of body, special wiring harness and indicator, and it is small in size and convenient to carry. The balance bridge principle is used to judge the decline of DC insulation, and then Hall principle is used to detect the direction of leakage current, so as to find and locate the fault point, which is convenient to operate and safe. The practical application shows that the DC insulation diagnostic device has high accuracy in line selection, and it can perform insulation inspection and diagnosis without power outage, which is time-saving and labor-saving.

Key words： DC power system insulation diagnosis detection method operation and maintenance management

Received: 19 September 2023

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	Articles by authors
	CHENG Zhengnian
	TANG Haisong
	MA Kun
	YAN Long
	FAN Liangpeng

Cite this article:

CHENG Zhengnian,TANG Haisong,MA Kun等. A kind of DC power system insulation diagnostic device and its detection method[J]. Electrical Engineering, 2024, 25(3): 58-62.

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http://dqjs.cesmedia.cn/EN/Y2024/V25/I3/58

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