太赫兹电磁波检测复合绝缘子内部缺陷可行性研究  

Feasibility Study on THz Detection of Composite Insulator Internal Defects

作　　者：赵庆州 李昂[2] 成立[2] 李波 董军 赵伟 

机构地区：[1]南方电网超高压输电公司天生桥局,贵州兴义562400 [2]清华大学深圳研究生院,广东深圳518055

出　　处：《陕西电力》2015年第3期63-66,97,共5页Shanxi Electric Power

基　　金：国家自然科学基金项目资助(51377093)

摘　　要：复合绝缘子的电气性能和机械性能是输电线路安全运行的重要影响因素。研究使用太赫兹电磁波对复合绝缘子内部缺陷进行无损检测的可行性。该方法将激光器产生的太赫兹电磁波通过光路传输到绝缘子内部。利用脉冲电磁波在不同电磁介质内的传播特性,通过分析反射波的时域特征,判断复合绝缘子样品内部的情况。通过对平面形状样品和实际绝缘子样品进行试验,对比有无缺陷情况下的检测波形,证明了太赫兹方法是检测复合绝缘子内部缺陷的有效方法。The electrical and mechanical properties of composite insulators are important factors affecting the sate operation of the transmission line. This paper studies the feasibility of composite insulators internal defects THz electromagnetic nondestrnctive, detection methods. This method generates THz laser transmission through optical path to the internal insulator, using electromagnetic pulse propagation characteristics in different magnetic media, by analyzing the time-domain characteristics of the reflected waves to determine the situation inside the composite insulators sample. Based on the tested flat-shape samples and the actual composite insulators samples,eomparison between the deteeted waveform defective and non-defective ease proved that terahertz method is an effective way to detect internal defects of composite insulators.

关 键 词：复合绝缘子 无损检测 太赫兹 时域光谱技术 

分 类 号：TM216.3[一般工业技术—材料科学与工程] O439[电气工程—电工理论与新技术]