Method of determining insulation characteristics of novel transformer oil

A technology for transformer oil and characteristics, which is applied to instruments, measuring electrical variables, measuring devices, etc., can solve the problems of high cost, the breakdown voltage of insulating oil, and the complexity of determining the insulating characteristics of transformer oil, so as to achieve a short determination period and a simple and fast determination method. , improve accuracy and effectiveness

CN105785244AInactive Publication Date: 2016-07-20陈盈洁
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-07-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method of determining insulation characteristics of transformer oil. The method particularly comprises the following steps: 1) a transformer oil sample containing copper and iron metal particles and silica nonmetallic particles is prepared; 2) an insulation characteristic test is carried out on the transformer oil sample; 3) a fuzzy relation between particle pollutants in the transformer oil and the insulation characteristics of the transformer oil is built; 4) after the particle pollutants in the to-be-tested transformer oil are detected, the insulation characteristics of the transformer oil are analyzed and judged according to the fuzzy relation between the particle pollutants in the transformer oil and the insulation characteristics of the transformer oil. The fuzzy identification technology is used for determining the insulation characteristics of the transformer oil, determination can be realized without complicated test operation, human factor influences during the test process can be avoided, and the accuracy and the effectiveness of determining the insulation characteristics of the transformer oil are improved.
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Description

Technical field

[0001] The invention is a novel method for determining the insulation characteristics of transformer oil, and particularly relates to the technical field of determining the insulation characteristics of transformer oil. Background technique

[0002] Transformer oil is an important insulating medium in power equipment, and its insulation properties are its most important properties. Breakdown voltage is an important electrical performance index that characterizes transformer oil, which can directly reflect whether there are polar impurities in transformer oil. Transformer oil is inevitably contaminated during production and operation, such as fiber particles, carbon particles, and metal particles such as insulating paper in transformers. Especially metal particles have a direct impact on the breakdown voltage of the oil. Depending on the content of copper and iron particles, the degree of impact on performance indicators such as oil breakdown voltage and the mechan...

Examples

Embodiment Construction

[0021] The present invention is further illustrated by a specific embodiment below.

[0022] The equipment used in this embodiment is as follows:

[0023] Ultrasonic oscillator (produced by Kunshan Sumei Ultrasonic Instrument Co., Ltd.): KQ-400KDB, ultrasonic power 400W, ultrasonic frequency 40KHz; oil pollution degree tester: HIAC8012; insulating oil dielectric strength tester: IIJ-II-80KV Type, the measurement range is 0-80kv, the electrode spacing is 2.5mm, and the test accuracy is 3%.

[0024] In this embodiment, the method for determining the insulation characteristics of transformer oil, the specific steps are as follows:

[0025] 1) Prepare transformer oil samples containing copper, iron metal particles and silica non-metal particles; according to the uniform design method, this embodiment is designed as a three-factor, twenty-four level test, and U 24 (twenty four 6 ) Table; according to U 24 (twenty four 6 ) Table use requirements, select the three columns 1, 3, and 5 of the ...