摘要:万家寨水电站1号主变压器高压侧过渡封闭母线在运行过程中发生放电故障。经排查,放电原因为GIS不清洁,电极间的粉尘颗粒导致SF6气体间隙被电弧击穿,触头连接烧毁,并在罐体内表面产生放电痕迹。对故障设备进行解体更换,回装时严格把控卫生质量,设备投入至今运行良好,保证了输电线路的安全稳定运行。
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