State determination method and device during cable aging process and aging device

A technology of aging process and determination method, applied in the direction of measuring device, measuring electricity, fault location, etc., can solve the problem of not being able to truly reflect the overall aging state of cable insulation, and unable to truly reflect the aging state of cable insulation.

Active Publication Date: 2019-10-18
STATE GRID BEIJING ELECTRIC POWER +2
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  • Abstract
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  • 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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  • State determination method and device during cable aging process and aging device
  • State determination method and device during cable aging process and aging device
  • State determination method and device during 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 protection scope of this application.

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

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Abstract

The invention discloses a state determination method and device during the cable aging process and an aging device. The method comprises the steps of acquiring a leakage current in a cable insulationlayer during the cable aging process at a predetermined time point during the aging process, wherein the leakage current is obtained by detection of an electrode inserted into the cable insulation layer, the electrode is inserted into the cable insulation layer by a hole punched in the cable insulation hole in advance, and the electrode, a metal shielding layer of the cable and an external conductive layer of the cable are not contacted; and determining a state of the cable insulation layer at the predetermined time point according to the leakage current. By the method, the technical problemsthat the aging state of cable insulation under an actual working condition cannot be truly reflected by a monitoring method in the prior art and the integral aging state of cable insulation during thecable aging process cannot be truly reflected are 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 Applications(China)
IPC IPC(8): G01R31/02G01R31/08
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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