摘要
高压电器设备长时间暴露在外部环境中,由于受到电场、化学腐蚀及热场等因素作用,变压器性能下降,文中运用红外-紫外复合成像技术,对110 kV变压器故障实行诊断。基于红外辐射知识获知红外诊断基本原理,利用物体时刻存在光辐射性质作为被检测目标温度高低和热场分布判定依据;将红外技术与紫外技术结合,依据红-紫外成像特性,运用视频分析及图像处理技术获取变压器外部放电光斑面积和直径参数值,对成像图像实行量化分析。通过现场实验形式研究光斑面积和电脉冲信号间关系,在放电强度等同增益不同情况下,分析光斑面积与诊断故障位置变化关系;在故障检测距离不同情况下,分析光斑面积与成像仪增益变化关系,从而完成红外-紫外复合成像技术对110 kV变压器诊断过程。
High voltage electrical equipment long time exposure to the external environment,due to the electric field, chemical corrosion and thermal field and other factors, the transformer performance degradation,using the infrared and ultraviolet composite imaging technology in this paper,the fault diagnosis of 110 kV transformer. The infrared radiation principle of infrared diagnosis based on the knowledge learned,using object moment light radiation properties as detection target temperature is determined based on the distribution of high thermal field; combining infrared technique and UV technology,on the basis of red-ultraviolet imaging characteristics,using video analysis and image processing technology to obtain the transformer external discharge spot area and diameter parameters a quantitative analysis on the value of imaging. Through the field experiment on the spot area and the relationship between the electrical pulse signal,in the relationship between the spot area and diagnosis of fault position change of discharge intensity and gain different under different circumstances; in the fault detection distance under different conditions,analysis of the relationship between the spot area and imager gain changes,thus completing the infrared and ultraviolet composite imaging process of 110 kVtransformer diagnosis.
出处
《科技通报》
2018年第5期122-125,共4页
Bulletin of Science and Technology
关键词
高压电器设备
变压器
红外-紫外成像
故障诊断
high voltage electrical equipment
transformer
infrared ultraviolet imaging
fault diagnosis
