Method and device for detecting corrosion of grounding grid of electric transmission line iron tower
A technology for grounding grids and grounding grids, used in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve problems such as corrosion detection of transmission line tower grounding grids, and achieve the effect of improving accuracy
Active Publication Date: 2013-05-15
NORTH CHINA ELECTRICAL POWER RES INST +1
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[0004] The embodiment of the present invention provides a method and device for detecting corrosion of the grounding grid of the iron tower of the transmission line, which is used to solve the corrosion detection problem of the grounding grid of the iron tower of the transmission line
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[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0016] Such as figure 1 As shown, the transmission line iron tower grounding grid corrosion detection method in this embodiment includes: applying a linearly polarized DC signal to the measured grounding grid metal and soil medium, and measuring the polarization resistance of the corrosion system composed of the measured grounding grid metal and soil medium (step S101); Apply a high-frequency AC signal to the measured ground grid metal and soil medium to measu...
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The invention discloses a method and a device for detecting the corrosion of a grounding grid of an electric transmission line iron tower. The device comprises a polarization resistance detection unit, a dielectric resistance detection unit, a Tafel constant detection unit, a detection result generating unit and a detection result output unit, wherein the polarization resistance detection unit is used for applying a linear polarization direct current signal to detected grounding grid metal and soil medium for measuring the polarization resistance of a corrosion system; the dielectric resistance detection unit is used for applying a high-frequency alternating current signal to the detected grounding grid metal and soil medium for measuring the dielectric resistance of the corrosion system; the Tafel constant detection unit is used for applying a weak polarization direct current signal to the detected grounding grid metal and soil medium for measuring the Tafel constant of the corrosion system; the detection result generating unit is used for calculating and generating the actual polarization resistance of the corrosion system according to the polarization resistance and the dielectric resistance and calculating and generating corrosion current detection data of the detected grounding grid metal according to the actual polarization resistance and the Tafel constant; and the detection result output unit is used for outputting detection result data including the corrosion current density data. The device is used for solving the problem of corrosion detection of the grounding grid of the electric transmission line iron tower.
Description
technical field [0001] The present invention relates to the detection technology of the corrosion state of the iron tower grounding grid of the transmission line, in particular to the on-site detection technology of the corrosion state of the iron tower grounding grid using electrochemical detection, specifically a method and device for detecting the corrosion of the iron tower grounding grid of the transmission line. Background technique [0002] The transmission line tower includes a ground part and an underground part. As the iron tower on the ground is exposed to the atmospheric environment, its corrosion degree can be qualitatively evaluated by visual inspection. As for the underground part, because it is buried underground, it is invisible and has no monitoring device. Therefore, after a period of operation of the transmission line tower, the corrosion problem will be exposed, especially in coastal areas. The corrosion problem of the tower is particularly prominent. A...
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IPC IPC(8): G01N17/02
Inventor 张秀丽王应高王金萍李永立龚丽华赵升月王剑寄玉玉
Owner NORTH CHINA ELECTRICAL POWER RES INST
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