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变压器油纸绝缘热老化特性及特征量研究

, PP. 27-33

Keywords: 油纸绝缘,热老化特性,聚合度,老化特征量,绝缘诊断

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Abstract:

对25#变压器矿物油、以BIOTEMP为代表的植物绝缘油、普通牛皮纸和热稳定绝缘纸材料构成的油纸绝缘试品进行了加速热老化实验,对老化过程中绝缘纸的聚合度变化规律及老化特性进行了对比分析,并对油中水分、糠醛含量这两个重要的老化特征参量的变化规律及其与聚合度的相关性关系进行了研究。研究的主要目的是探索新型绝缘材料的老化特性,为传统的老化特征参量应用于新型油纸复合绝缘材料构成的变压器老化诊断提供依据,并为拓展变压器寿命预测理论奠定基础。

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