摘要：介绍了超声波检测和超高频检测在GIS设备局部放电带电检测中的应用，通过一起CT气室局放量数值偏大故障分析，2种检测方法优势互补，诊断出GIS存在悬浮电位引起的较严重局部放电，判断GIS罐体内有异物，并提出了整改建议。
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