In a nonattendant substation that has operated for less than one year, more or less erosion has occurred on the surfaces of all copper materials.

• 摘要一座投运不到一年的无人值守变电站，所有铜质料表面均出现了不同程度的腐蚀；经测试分析，其腐蚀原因为硫化氢气体腐蚀。