基于热像技术的电力变压器热故障的诊断方法  

Diagnosis method of transformer hot fault based on thermal imaging technology

作　　者：冉海潮[1] 郭英军[1] 孙丽华[1] 刘立辉 

机构地区：[1]河北科技大学,河北石家庄050054 [2]河北省消防局,河北石家庄050054

出　　处：《火灾科学》2007年第1期52-54,共3页Fire Safety Science

基　　金：河北省自然科学基金资助项目(F2005000422);河北省科技厅指导性计划项目(052135168)

摘　　要：提出了一种基于变压器表面的红外热像对变压器热故障进行在线诊断的方法。根据变压器的表面温度、结构参数、物性参数和环境温度通过建立其传热模型,对变压器内部热故障温度进行反演计算,并与DGA诊断结果进行比较,证明了该方法的可行性,实现了变压器热故障的非接触、在线诊断。An on-line diagnosis method based on thermal imaging technology of transformer hot fault is given. A heattransfer model was established by some parameters, such as surface temperature, structure parameters, physical characteristics and environmental temperature of transformer. And then the inner hot fault temperature of transformer is calculated through the model. By comparing with DGA diagnosis result, the availability of diagnosis method is proved. And then the on-line and non-contact diagnosis of transformer latent hot fault is realized.

关 键 词：电气火灾 DGA诊断技术 热像技术 变压器 

分 类 号：TN219[电子电信—物理电子学]