接地网是电力系统安全稳定运行的重要保证。通过现场试验,研究了Q235、Q345镀锌和非镀锌钢在不同土壤环境中外施电流与腐蚀电位的关系、埋设时间与金属腐蚀速率的关系,得到了Q235、Q345钢在不同土壤环境中的腐蚀特性。现场试验结果表明:随着外施电流增大,4种试验钢的腐蚀电位先降后升;Q235碳钢的腐蚀电位最低;Q235非镀锌碳钢腐蚀速率和时间的关系与腐蚀速率模型的拟合度最低,Q345非镀锌碳钢的拟合度最高。 Grounding grid is an important guarantee for the safe and stable operation of the power system. Through the field test, the relationship between applied current and corrosion potential of Q235 and Q345 galvanized and non-galvanized steel in different soil environments, the relationship between embedding time and metal corrosion rate were studied. Corrosion characteristics. The field test results show that the corrosion potential of the four kinds of test steels first decreases and then increases with the increase of the applied current; the corrosion potential of Q235 carbon steels is the lowest; the corrosion rate and time of Q235 non-galvanized carbon steels is proportional to the corrosion rate model The least fitting degree, Q345 non-galvanized carbon steel has the highest fitting degree.