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基于热焓分析的变压器油热解机制及热故障严重程度评估

DOI: 10.13334/j.0258-8013.pcsee.2014.33.020, PP. 5956-5963

Keywords: 变压器油,热焓分析,能量加权,热故障,严重程度评估

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Abstract:

油中溶解气体总含量及其产气速率被普遍应用于诊断变压器内部故障的严重程度,但这类方法忽视了生成不同气体成分的能量差异。引入热焓分析研究了变压器油的热解机制与热故障严重程度的评估方法。基于热力学理论,对C20H42的热解产气机制进行了模拟,获得了不同气体组分的生成含量与温度的关系;然后依据热焓分析,对可表征反应过程能量变化的特征气体生成能进行了计算,得到各气体生成能的排列顺序为CH4

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