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Electric aging test method and test device for cable insulation layer

A technology of cable insulation and test method, applied in the field of cables, can solve problems such as inaccurate results

Active Publication Date: 2018-06-19
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a more accurate cable insulation electrical aging test method for the problem that the results of the traditional cable insulation layer aging test are not accurate enough.

Method used

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  • Electric aging test method and test device for cable insulation layer
  • Electric aging test method and test device for cable insulation layer

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Embodiment Construction

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The invention relates to an electric aging test method for a cable insulation layer. The method comprises the steps that a number of simulation samples are acquired; a number of simulation samples arearranged outside a test cell at different distribution distances; and after the test cell is applied with voltage, multiple electrically aged samples are acquired. According to the electric aging test method for the cable insulation layer, after voltage is applied to the test cell, a number of simulation samples arranged outside the test cell are electrically aged in a magnetic field generated bythe test cell; in the later period, multiple electrically aged samples are directly analyzed and detected to determine the degree of electrical aging of the electrically aged samples, and the degreeof aging of a to-be-tested insulation layer in a cable to be tested can be determined; the slice of the to-be-tested insulation layer electrically aged in the cable to be tested is not needed; the microstructure of the electrically aged samples is not damaged; the subsequent research of the electrically aged samples is not affected; and the accuracy of the electric aging test result of the cableinsulation layer is improved.

Description

technical field [0001] The invention relates to the field of cables, in particular to an electrical aging test method and an experimental device for an insulating layer of a cable. Background technique [0002] Cables play an important role in the field of power transmission and distribution for the transmission and distribution of high-power electrical energy. However, cables will age under multiple stresses in the environment during long-term service, and the aged insulation layer will be easily broken down, which will lead to large-scale power outages and significant economic losses. Therefore, it is very important to study the aging degree of the cable insulation layer through the electrical aging test. Generally, the sample after electrical aging is obtained first, and then the physical, chemical and electrical characteristics of the sample are analyzed to determine the degree of aging. [0003] Specifically, in the electrical aging test of the cable insulation layer,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 黄嘉盛徐研石银霞凌颖贺伟肖健健慕容啟华
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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