Research on the Influence of DC Current Overflowing on Grounding Electrode Corrosion
In the power system,earth electrode is buried in the soil for current overflowing,to ensure secure and stable operation of power grid and electric equipment.When the DC transmission system is in the unipolar-earth mode,the ground electrode may assume a large positive DC or negative DC,which has an important effect on the electrochemical corrosion of the ground electrode in the soil environment.Based on the established corrosion model,this paper makes research on the influence of different DC current overflowing on corrosion potential,anodic/cathodic current and deformation,without considering the effect of species diffusion.What is more,the relationships between the amount of corrosion deformation and time as well as the magnitude of DC are also studied.
earth electrode DC current overflowing corrosion
Guohua Liu Ganzhi Jiang Zhanlong Zhang Daojun Mei Yan Zheng
Quzhou Power Supply Company of State Grid,Zhejiang Electric Power Company,Quzhou,China State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing Zhejiang Huadian Wuxi River Hydraulic Power Plant,Quzhou,Zhejiang,China
国际会议
重庆
英文
291-295
2017-10-03（万方平台首次上网日期，不代表论文的发表时间）