基于对四川电网21个地（市）供电公司所属105个变电站、105条输电线路的输变电设备的现场腐蚀调查，从前期设计选型、材质、镀锌、防腐蚀涂层质量、后期维护、环境因素等方面分析了设备发生腐蚀的原因。通过近年来四川电网开展的一些腐蚀防护措施，建议在绘制四川电网大气腐蚀地图的基础上，针对不同大气腐蚀环境进行差异化的防腐蚀设计和选材，建立入网设备金属材料质量抽检制度，并根据腐蚀环境尽快制定差异化的输变电设备腐蚀防护标准与规范。

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.