KI25X变压器油的热解特性研究及动力学分析

采用热重分析和热重-红外联用技术,探究了常用变压器油KI25X在3种不同升温速率下的热解特性,发现热解过程主要发生在200～300℃和550～800℃两个阶段,且通过试验发现变压器热故障释放能量会造成变压器油的热解劣化,破坏变压器油的化学键,产生低分子烃类气体并溶于其中.利用微分法和积分法热力学理论计算出变压器油在N2...

Study on pyrolysis characteristics and kinetic analysis of KI25X transformer oil

Thermogravimetric analysis(TGA)and thermogravimetric infrared(TG-IR)techniques were used to investigate the pyrolysis characteristics of transformer oil KI25 X at three different heating rates.It was found that the pyrolysis process mainly took place at 200~300℃and 550~800℃,and the results show that the energy released by the thermal failure of the transformer will cause the pyrolysis degradation of the transformer oil,destroy the chemical bonds of the transformer oil,and produce low molecular hydrocarbon gas dissolved in it.The kinetic parameters of the pyrolysis process of transformer oil in N₂ atmosphere were further calculated by using the thermodynamic theory of differential method and integral method.The comprehensive analysis of the pyrolysis characteristics of transformer oil provide a theoretical basis for the further study of thermal fault detection of transformer oil.