Method for testing insulation performance of insulator and device thereof

A technology for insulation performance and detection devices, which is applied in measuring devices, measuring electrical variables, and measuring resistance/reactance/impedance, etc., which can solve problems such as inability to detect line insulators live, time-consuming and labor-intensive insulators, low efficiency, and long detection time for power grid outages. , to achieve the effects of rich human-computer interaction, accurate and reliable measurement, and high efficiency of detection operations
CN101706531AInactive Publication Date: 2010-05-12长沙信长电力科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
长沙信长电力科技有限公司
Publication Date
2010-05-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for testing insulation performance of insulator and a device thereof. The test method comprises the following steps: initializing zero value critical resistance R1 and low value critical resistance R2 of a tested insulator; exerting DC high voltage on the tested insulator under power-off state; collecting leakage current flowing through the tested insulator; calculating insulating resistance R by combining with volt-ampere method according to the exerted DC high voltage and collected leakage current obtained in the above steps; comparing the calculated insulating resistance R with zero value critical resistance R1 and low value critical resistance R2, then outputting the comparison result of the performance of the tested insulator. The test device comprises a high voltage power unit (1), a current collecting unit (2), and a processing unit (3). The invention has the advantages of broad application scope, applicability to on-site operation, intelligent measurement, rapid test, convenient operation, high measurement preciseness, abundant forms of output result, and good portability.
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Description

technical field

[0001] The invention relates to the field of electric power safety, in particular to a method and a device for detecting the insulation performance of an insulator. Background technique

[0002] At present, most of the insulators used in my country's power grid are ceramic insulators. The new insulators have better insulation performance, but with the operation of transmission lines, the insulators will gradually age, the insulation resistance of the insulators will become smaller, and the insulation performance will decrease, becoming low-value insulators or Zero value insulators. The main causes of low-value insulators are: 1. The insulator is degraded. The insulator has been subjected to the electric field, the gravitational load of the line, and the action of nature, sunlight, rain, and snow for a long time. The insulation performance of insulators will be reduced; if the degree of low-value insulators becomes more serious or lightning breaks down the ins...

Claims

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