The corrosion characteristics of grounding grid in different kinds of resistance-reducing agent were analyzed. The corrosion characteristic of carbon steel in different resistance-reducing agent was presented. Comprehensive evaluation on construction technology was made. Moreover, reference for the protection of the grounding grid and the safe operation were provided.

The research progress of conductive coating was introduced. The advantages and disadvantages of the latest technologies of filler modification and coating preparation were all analyzed. The application in power grounding system and research focus in future of conductive coating were explained and predicted respectively, indicating that conductive coating with high conductive performance and being economic and environment friendly would be the main development target in future.