Research on Imaging Method of Power System Grounding Grid Based on Scattering Principle

摘要

Aiming at the problems of corrosion and defect detection of grounding grid in power system, an intelligent imaging method of pulse electromagnetic inverse scattering is proposed in this paper. Firstly, based on the difference of electrical parameters between grounding grid equipment and surrounding soil medium, the electrical parameter amplitude image reconstruction of substation equipment grounding system is realized, and then the fault or defect of grounding grid is reflected by electrical parameter anomaly. Therefore, this paper first analyzes the basic theory of intelligent imaging detection of grounding grid based on scattering principle, then designs and develops the intelligent detection system of grounding grid state, and carries out the numerical experiment and the test experiment of grounding grid samples. Finally, combined with narrow pulse emission, electromagnetic detection, multiple coverage detection and other technologies, according to the requirements of shallow detection and imaging resolution of grounding grid, the intelligent detection method of grounding grid is studied.