Research Advances in Grounding Technologies of Modern Power System

摘要

Grounding system is the important measure to ensure the safety of power apparatus and human beings, and maintain the safe operation of power system. In China, there are a lot of faults caused by bad grounding systems in power system, which destroyed the power apparatus and control systems. The problems related to grounding systems of substations and power plants include the precise design of grounding system, the technology to decrease grounding resistance of substation in high soil resistivity area, geological structure analysis of substation site, corrosion diagnosis of grounding system, precise measurement of grounding resistance of substation. Up to present, these five aspects related to grounding technology of power system have been widely studied, and achieved satisfied results in Tsinghua University. These achievements were systematically introduced in this paper.