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基于FTIR的110kV复合绝缘子硅橡胶伞裙老化性能分析

, PP. 297-303

Keywords: 傅里叶红外光谱,110kV复合绝缘子,老化,运行年限,电场强度,运行环境

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Abstract:

为研究110kV运行复合绝缘子硅橡胶伞裙的老化状态,采用傅里叶变换红外光谱(FourierTransformInfraredSpectrometer,FTIR)技术对来自同一厂家运行于3个不同地区的9支110kV复合绝缘子硅橡胶伞裙典型基团变化情况进行了研究。对比了不同部位、污区及运行年限硅橡胶伞裙中Si-O-Si主链及Si-CH3侧链反射率差异,结果显示导线侧伞裙、重污秽地区运行伞裙及运行年限较长伞裙的红外反射率较小,表明强电场、重污环境及长运行年限复合绝缘子硅橡胶伞裙老化较严重,硅橡胶伞裙老化状况随运行年限表现出缓慢增长-急剧增加-缓慢变化的趋势;同时运行年限对硅橡胶伞裙老化的作用相对最强,电场强度作用次之,而运行环境作用相对较弱,结合硅橡胶伞裙表面SEM测试结果对硅橡胶伞裙的老化差异进行了理论分析。

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