Corrosion Investigation and Protection Measures of Power Transmission and Transformation Equipment in Sichuan Power Grid

Based on the on-site corrosion investigation of power transmission and transformation equipment on 105 transformer substations and 105 power transmission lines in 21 districts of Sichuan power grid, the reasons of equipment corrosion were analyzed from several aspects such as design and type-selection, material, zinc coating, anti-corrosion coating quality, post-maintenance and environment. Through some corrosion protection measures performed in Sichuan power grid in recent years, it is suggested that differentiated anti-corrosion design and material selection for different atmospheric corrosion environments were performed on the basis of Sichuan power grid atmospheric corrosion map, a random inspection system for the quality of metal materials of network equipment was established, and differentiated transmission and transformation equipment corrosion protection standards and specifications were formulated as soon as possible according to the corrosive environments.