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Pot-type insulator lifetime assessment method based on artificial accelerated aging test

A pot-type insulator, accelerated aging technology, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of in-depth insulation aging evaluation and life prediction

Active Publication Date: 2015-12-30
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

Although there are more and more studies on basin insulators with the wide application of GIS, they are all limited to the study of a single problem, and have not gone deep into the insulation aging assessment and life prediction.
In terms of artificial accelerated aging test, at present, IEC and national standards do not have an aging test method for the electrothermal comprehensive factors of solid dielectrics, but a relatively systematic standard has been formed for the aging test method of composite insulators, which can be used for reference

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  • Pot-type insulator lifetime assessment method based on artificial accelerated aging test
  • Pot-type insulator lifetime assessment method based on artificial accelerated aging test
  • Pot-type insulator lifetime assessment method based on artificial accelerated aging test

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0032] In one embodiment, the present invention discloses a method for evaluating the life of a pot insulator based on an artificial accelerated aging test, the method comprising the following steps:

[0033] S100. Put two groups of samples equipped with electrodes into the multi-factor aging laboratory; set the test temperature and voltage, and start the artificial accelerated aging test;

[0034] S200, take out one sample from each of the two groups of samples at intervals of aging time t, use the same number to measure the insulation resistivity, and generate an insulation characteristic curve based on the aging time and the percentage relationship of the insulation resistivity;

[0035] S300, keeping the test temperature constant, taking multiple test voltage values, repeating steps S100 and S200, and obtaining multiple sets of insulation chara...

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Abstract

The invention provides a pot-type insulator lifetime assessment method based on an artificial accelerated aging test. According to the characterizes of sealing, high temperature and long-time bearing on high voltage of a pot-type insulator, an artificial accelerated aging test platform with electric heating comprehensive factors is designed by means of a multiple-factor laboratory, and characteristic quantities of multiple epoxy resin samples under different degrees of aging are measured. On this basis, analyzing is conducted on test data, by means of an existing empirical formula, a curve-fitting technique and a Weibull probability distribution method are adopted, internal relations among all aging factors, the electrical test quantity and the aging life are researched, relationship is established between the test data of epoxy resin materials and the aging assessment of the pot-type insulator, and the pot-type insulator lifetime assessment method is provided.

Description

technical field [0001] The invention belongs to the technical field of solid dielectric aging life prediction, in particular to a basin-type insulator life evaluation method based on an artificial accelerated aging test. Background technique [0002] Basin insulator is the main component of GIS. It has two functions: one is to connect the high-potential parts and the ground potential shell, which plays the role of support and insulation to the ground; the other is to connect the moving contacts and static contacts between the fractures. The corresponding components play the role of connection and fracture insulation. With the wide application of GIS, the operational reliability of GIS equipment has aroused widespread concern at home and abroad, and GIS equipment failures have occurred frequently in recent years. According to operating experience, among all GIS failure cases, basin-type insulators and disconnectors have the highest proportion of failures, and the failure rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 夏小飞黄金剑黄辉敏芦宇峰王飞风
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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