A life evaluation method of grounding device considering the influence of highly corrosive soil
A grounding device and life evaluation technology, which is applied in the direction of measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve problems such as rarely considering the life status of grounding devices, and achieve the effect of simple and safe operation
Active Publication Date: 2022-07-19
SOUTHWEST JIAOTONG UNIV
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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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[0028] The specific embodiments 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 in the figure, build a grounding device life evaluation platform considering the influence of highly corrosive soil, the platform includes: a host computer (1), a data collection unit (2), a data processing device (3), and a grounding device (4) , electrochemical corrosion detection unit (5), electrochemical signal filter (6), current sensor (7), current signal collector (8), DC current generator (9), DC current generation trigger (10), switch (11), highly corrosive test soil (12);
[0029] The control signal output end of the host computer (1) is connected with the input end of the switch (11), the output end of the switch (11) is connected with the input end of the direct current generating trigger (10), and the direct current generating trigger (10) ) output terminal ...
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A method for evaluating the life of a grounding device taking into account the influence of highly corrosive soil, which is characterized in that a platform for evaluating the life of a grounding device under the influence of highly corrosive soil is built, and the evaluation steps are: by applying a direct current to the grounding device Current, collect the DC current flowing through the grounding device and the electrochemical signal in the highly corrosive test soil, comprehensively consider the benchmark performance factor and performance distortion factor of the grounding device, obtain the life evaluation factor of the grounding device, and evaluate the life evaluation factor Whether the grounding device needs to be repaired or replaced. The main realization method of the invention is to comprehensively consider the benchmark performance factor and performance distortion factor of the grounding device, so as to realize the life evaluation of the grounding device in the highly corrosive soil, which is of great significance to the stable operation of the 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 more and more huge, and the grounding device plays an important role in guaranteeing 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, shortens its life, and greatly reduces its grounding performance. In severe cases, it may even threaten the entire power system. operation and personnel safety. Therefore, timely understanding of the corrosion severity of the grounding device can prevent many hazards caused by poor grounding. At the same time, planning regular maintenance dates or timely replacement of the grounding ...
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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