Multi-channel rapid corrosion detection and plane imaging diagnosis method for large grounding grid

Abstract

The invention relates to a multi-channel rapid corrosion detection and plane imaging diagnosis method for a large grounding grid. The method comprises the following steps of: establishing an originalstructure topological graph of a grounding grid; importing the original structure topological graph of the grounding grid into a computer host; performing optimization and analysis for the original topological graph of the grounding grid by a computer host to obtain an optimal measuring point schematic diagram; performing field measurement of a grounding down lead by a field measurement device; uploading all measured data into the computer host; performing determination of the corrosion degree of the computer host to obtain the corrosion fault degree and the corrosion fault position of the grounding grid; and drawing a grounding grid plane imaging diagnosis topological graph. The optimal measuring point schematic diagram, the corrosion fault degree and the corrosion fault position are obtained through the original structure topological graph of the grounding grid to obtain the plane imaging diagnosis topological graph of the grounding grid, discover the corrosion condition of the grounding grid, make determination and safety estimation for the corrosion condition of the grounding grid and ensure the safe operation and power supply reliability of the power system.

Description

technical field [0001] The invention belongs to the technical field of electric grounding network detection, in particular to a method for multi-channel rapid corrosion detection and planar imaging diagnosis of a large-scale grounding network. Background technique [0002] In the power system, a complete and reliable grounding grid is an important guarantee for the safe operation of substations. Domestic grounding grid conductors are mostly made of galvanized steel, which are susceptible to corrosion failures due to soil corrosion and electrodynamic forces. At the same time, hidden dangers such as virtual welding, missing welding, and cutting corners in the construction of domestic grounding grids may also easily lead to poor electrical connections between the voltage equalizing conductors, affecting the performance of the grounding grid. [0003] The current method of substation grounding grid status assessment mainly adopts the grounding grid electrical integrity test and...

AI Technical Summary

Problems solved by technology

The electrical integrity test results of the grounding grid can only reflect part of the status of the grounding grid, and cannot accurately know the change of the resistance of each branch of the grounding grid, and can only measure the conduction result of a single port each time, and the measurement efficiency is low; excavation inspection has Blindness, there are difficulties such as large amount of construction work and difficulty in finding problems

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