工频入地电流对碳钢接地材料的腐蚀行为研究

摘要

通过腐蚀调查，发现电力系统中接地网材料受到工频入地电流的干扰，造成接地网局部腐蚀严重。在实验室利用浸泡试验及电化学交流阻抗技术研究了这种工频交流干扰对碳钢材料的腐蚀行为和腐蚀机理。结果表明：工频电流对电极过程中的中间产物产生影响，进而增加碳钢材料的腐蚀速度。%It was found that the corrosion rate of grounding grid materials increase with power frequency current in a corrosion survey.The corrosion behavior and mechanism were studied by electrochemical impedance spectra(EIS) in laboratory.Experiments show that the corrosion rate of carbon steel increase because of the impact of power frequency current.