运城地区接地网土壤腐蚀性研究

Study on the Soil Corrosivity of Grounding Grid in Yuncheng Area

主要研究了运城地区偏碱性含盐沙质土对接地网的腐蚀性,调查了现场接地网腐蚀现状,测试了土壤理化性能,进行了不同土壤在不同含水率条件下的腐蚀电化学试验以及现场埋片试验,研究考察了某变电站土壤对接地网材料(A3钢)的腐蚀性,结果表明该土壤属于中等偏上腐蚀强度。

The land of Yuneheng area tends 1o be alkaline saline. This paper mainly studies its corrosive influences on grounding gird. A series of researches are done as follows： soil physical-chemical properties are tested; electrochemical corrosion experiments are conducted on soil with different moisture content; research of field coupon is done; and the soil eorrosivity on grounding material Steel A3 is studied. The results show that the corrosion strength in the area tend to be above average, thus anti-corrosion measures shouht be adopted to protect carhon steel grounding grid.