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Method and device for measuring cable insulation damage area in low pressure environment

A cable insulation and measurement device technology, applied in the electrical field, can solve problems affecting the normal operation of transmission lines

Active Publication Date: 2021-03-12
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides a method and device for measuring the damaged area of ​​cable insulation in a low-pressure environment, so as to solve the problem in the related art that the normal operation of the transmission line will be affected when evaluating the damaged area of ​​the cable insulation in a low-pressure environment

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  • Method and device for measuring cable insulation damage area in low pressure environment
  • Method and device for measuring cable insulation damage area in low pressure environment
  • Method and device for measuring cable insulation damage area in low pressure environment

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Embodiment Construction

[0053] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0054] see figure 1 , figure 1 It is a flowchart of a method for measuring the damaged area of ​​cable insulation in a low-pressure environment provided by the application. Such as figure 1 shown, including the following steps:

[0055] Step 101. When the cable is in a low-pressure environment and transmits current inside the cable, acquire at least two temperature data measured by each of the at least two temperature sensors...

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Abstract

The present application provides a method and device for measuring the damaged area of ​​cable insulation in a low-pressure environment. The method includes: obtaining at least two temperature sensors placed near the cable when the cable is in a low-pressure environment and current is transmitted inside the cable At least two temperature data measured by each temperature sensor in the preset period; according to at least two temperature data measured by each temperature sensor in the preset period, determine the deviation proportion factor corresponding to the temperature sensor; according to each At least two temperature data and ambient temperature data measured by a temperature sensor within a preset period determine the damage factor corresponding to the temperature sensor; according to the deviation ratio factor and damage factor corresponding to each temperature sensor in the at least two temperature sensors, Determine the damaged area of ​​the cable insulation. In this way, in a low-pressure environment, the normal operation of the transmission line will not be affected when the damage area of ​​the cable insulation is evaluated.

Description

technical field [0001] The present application relates to the field of electrical technology, in particular to a method and device for measuring the damaged area of ​​cable insulation in a low-pressure environment. Background technique [0002] Cables are widely used in various fields. Affected by factors such as its laying method, manufacturing process, and operating environment, cables often suffer from insulation scratches to varying degrees. Especially in low-pressure areas, cables run in a low-pressure environment for a long time, which can easily lead to accelerated aging of the cable's internal insulation, cause partial discharge breakdown, cause explosion and fire accidents, and pose a safety hazard. [0003] In a low-pressure environment, the damage area of ​​the cable insulation is mainly measured by measuring the physical, chemical or electrical parameters that characterize the aging characteristics of the cable insulation in the off-line state or in the maintena...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/28G01N25/72
CPCG01B21/28G01N25/72
Inventor 项恩新黄继盛王科刘红文徐肖伟
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST