On-Site Electrochemical Detection of Corrosion in Substation Grounding System

Ben Yu, Peng Zhao, Yuhang Cai, Weiming Yuan, Jinshan Yu and Yu Tan ()
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Ben Yu: State Grid Tianjin Electric Power Research Institute, Tianjin 300000, China
Peng Zhao: State Grid Tianjin Electric Power Research Institute, Tianjin 300000, China
Yuhang Cai: Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071000, China
Weiming Yuan: Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071000, China
Jinshan Yu: State Grid Tianjin Electric Power Research Institute, Tianjin 300000, China
Yu Tan: Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071000, China

Energies, 2024, vol. 17, issue 16, 1-12

Abstract: The reliability and efficiency of the grounding system in substations is of utmost importance for the safety of the electrical grid. In China, the grounding grids of substations are primarily composed of galvanized steel, carbon steel, and copper, all of which are susceptible to corrosion from soil during operation. This study thoroughly examines the effects of typical Cl − ions and soil water content on the corrosion behavior of a Q235 steel in situ. The data suggest that there is a negative correlation between soil moisture and grounding grid corrosion, whereas dissolved salts, particularly Cl − ions in soil, correlate positively.

Keywords: grounding down lead; soil corrosion; electrochemistry; ion concentration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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