Method and device for determining state in cable aging process and aging device

A technique for determining the aging process and method, which is applied in the direction of measuring devices, measuring electricity, fault locations, etc., and can solve problems that cannot truly reflect the aging state of the cable insulation, and cannot truly reflect the overall aging state of the cable insulation.

Active Publication Date: 2021-05-07
STATE GRID BEIJING ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] This application provides a method and device for determining the state of the cable during the aging process and an aging device to solve the problem that the state monitoring method in the related art cannot truly reflect the aging state of the cable insulation under actual working conditions, and cannot truly reflect the cable insulation during the cable aging process. Technical issues of the overall aging state of the insulation

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  • Method and device for determining state in cable aging process and aging device
  • Method and device for determining state in cable aging process and aging device
  • Method and device for determining state in cable aging process and aging device

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Embodiment Construction

[0024] 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 application will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] 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.

[0026] It should be noted that the terms "first" and "second...

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Abstract

The application discloses a method and a device for determining the state in the cable aging process and an aging device. The method includes: at a predetermined time point during the aging process, obtaining leakage current in the cable insulation layer during the aging process of the cable, wherein the leakage current is detected by an electrode inserted into the cable insulation layer, and the electrode passes through the cable insulation layer The pre-drilled holes are inserted into the cable insulation layer, and the electrodes are not in contact with the metal shielding layer of the cable and the outer conductive layer of the cable; the state of the cable insulation layer at a predetermined time point is determined according to the leakage current. Through this application, the technical problem that the state monitoring method in the related art cannot truly reflect the aging state of the cable insulation under actual working conditions and cannot truly reflect the overall aging state of the cable insulation during the cable aging process is solved.

Description

technical field [0001] The present application relates to the field of cable aging monitoring, in particular, to a method and device for determining the status of a cable during aging, and an aging device. Background technique [0002] With the increase of the service life of cables, aging accidents caused by electrical, thermal, chemical and other operating environments as well as machinery and pollution have become the main cause of cable outage accidents. Water tree and electric tree aging during cable operation are the most important forms of cable natural aging faults. Compared with power outages caused by mechanical and other external force damage, power outages caused by cable aging are more harmful. At the same time, the measurement and evaluation of the aging state during the aging process of the cable is of great significance to the operating state of the cable insulation and the safety of the system; the evaluation of the aging state of the overall insulation of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08G01R31/52G01R31/58
CPCG01R31/003G01R31/083G01R31/50
Inventor 张成邓佳翔王金双刘皓刘青刘志国赵明杨延滨张谊李恺熊益多任成燕李杨威孔飞邵涛
Owner STATE GRID BEIJING ELECTRIC POWER
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