Cable aging degree detection method and device

A technology of aging degree and detection method, applied in the field of detection, can solve the problem that the detection method of cable insulation performance cannot accurately reflect the aging degree of the cable, etc., and achieve the effect of accurate response

Inactive Publication Date: 2016-10-12
STATE GRID BEIJING ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a method and device for detecting the cable aging degree, so as to solve the problem in the related art that the detection means for the cable insulation performance cannot accurately reflect the aging degree of the cable

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  • Cable aging degree detection method and device
  • Cable aging degree detection method and device
  • Cable aging degree detection method and device

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0025] It should be noted that the terms "first" and "second" in ...

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Abstract

The invention discloses a method and a device for detecting the aging degree of cables. The method includes: detecting the depolarization current generated by a fully charged offline cable during discharge; performing calculation on the depolarization current according to a preset algorithm to obtain an aging index; and judging the aging degree of the offline cable according to the aging index. The invention solves the problem in the related art that the detection means for the cable insulation performance cannot accurately reflect the aging degree of the cable.

Description

technical field [0001] The invention relates to the field of detection, in particular to a method and device for detecting the aging degree of cables. Background technique [0002] The cables in the power system are affected by electrical, thermal, mechanical, chemical and other factors during long-term operation, and will gradually accumulate aging effects. The higher the aging degree, the worse the insulation performance of the cable. This process is extremely slow and irreversible, and it is easy to be negligent in the daily operation and maintenance of the power system. If the cable insulation performance is too poor, it is easy to cause large-scale power outages and other harmful effects. Therefore, it is necessary to monitor the aging degree of the cable. Existing detection methods for detecting the cable aging degree mainly judge the aging degree of the cable by detecting the cable insulation performance, and the detection cable insulation performance is divided into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 李伟刘弘景吴麟琳任志刚周松霖周宇张冠军赵艾萱张幸
Owner STATE GRID BEIJING ELECTRIC POWER
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