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Method for evaluating service life of grounding device under influence of highly corrosive soil

A technology for grounding device and life evaluation. It is used in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc. It can solve the problem of rarely considering the life status of the grounding device, and achieve the effect of simple and safe operation.

Active Publication Date: 2022-03-11
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] There are few studies considering the life state of grounding devices in highly corrosive soils

Method used

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  • Method for evaluating service life of grounding device under influence of highly corrosive soil
  • Method for evaluating service life of grounding device under influence of highly corrosive soil
  • Method for evaluating service life of grounding device under influence of highly corrosive soil

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Embodiment Construction

[0028] The specific embodiment of the present invention will be further described below in conjunction with the accompanying drawings, including the following steps: the first step, such as figure 1 As shown, a platform for evaluating the life of the grounding device under the influence of highly corrosive soils is built. The platform includes: a host computer (1), a data collection unit (2), a data processing device (3), and a grounding device (4) , an electrochemical corrosion detection unit (5), an electrochemical signal filter (6), a current sensor (7), a current signal acquisition instrument (8), a direct current generator (9), a direct current generation trigger (10), Switch (11), highly corrosive test soil (12);

[0029] The control signal output end of the host computer (1) is connected to the input end of the switch (11), the output end of the switch (11) is connected to the input end of the direct current generation trigger (10), and the direct current generation tri...

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Abstract

The invention relates to a grounding device service life evaluation method considering the influence of high-corrosion soil, which is characterized in that a grounding device service life evaluation platform considering the influence of the high-corrosion soil is built, and the evaluation steps are as follows: applying direct current on a grounding device; a direct current flowing through the grounding device and an electrochemical signal in high-corrosivity test soil are collected, a reference performance factor and a performance distortion factor of the grounding device are comprehensively considered, a service life evaluation factor of the grounding device is obtained, and whether the grounding device needs to be maintained or replaced is evaluated according to the service life evaluation factor. According to the main implementation method, the reference performance factor and the performance distortion factor of the grounding device are comprehensively considered, so that the service life of the grounding device in the high-corrosion soil is evaluated, and the method has great significance in stable operation of a power grid.

Description

technical field [0001] The invention belongs to the technical field of grounding device protection, in particular to a method for evaluating the life of a grounding device under the influence of highly corrosive soil. Background technique [0002] At present, my country's power system is becoming larger and larger, and the grounding device plays an important role in ensuring the long-term stable operation of the power system. Because the grounding device is buried deep in the soil for a long time and is easily affected by leakage current and highly corrosive soil, it is prone to corrosion and shortens its life, thereby greatly reducing its grounding performance. In severe cases, it may even threaten the entire power system operation and personnel safety. Therefore, knowing the corrosion severity of the grounding device in time can prevent many hazards caused by poor grounding. At the same time, planning a regular maintenance date or replacing the grounding device in time is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N17/02G01R31/00
CPCG01N17/006G01N17/02G01R31/00
Inventor 周利军陈伟魏仁伟林智聪
Owner SOUTHWEST JIAOTONG UNIV
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