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GIS内环氧树脂绝缘沿面放电强度与产气关联规律的模拟实验

, PP. 172-179

Keywords: GIS,固体绝缘,特征气体,沿面放电,CS2

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Abstract:

为了解SF6气体绝缘电气设备中环氧树脂固体绝缘沿面放电强度与特征气体之间的关联规律,搭建了固体绝缘表面附着铜粉的缺陷模型。实验发现,放电涉及环氧树脂固体绝缘时,不同特征气体呈现的增长特性不同;放电强度不同,同一特征气体的增长特性也有差异。通过对不同特征气体与CS2含量之间的比值特性研究,发现在不同放电强度下,特征气体含量的比值特性不同。对比在两种放电强度下产生的特征气体(如SOF2、SO2、CS2等)的含量、增长规律、特征比值等特征量,研究了特征气体与放电强度之间的关系及不同特征气体之间的内在关联,为用特征气体检测法诊断设备内部固体绝缘的状态提供了新方法。

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