用于局部放电探测的超声光纤传感方法  

Ultrasonic Fiber Sensing Method for Partial Discharge Detection

作　　者：吴凌峰[1,2] 贺红亮[2] 魏晓勇[1] 冯玉军[1] 张福平[2] 刘雨生[2] 高志鹏[2] 谢庆海[2] 陶天炯[2] 翁继东[2] 

机构地区：[1]西安交通大学电子陶瓷与器件教育部重点实验室,国际电介质研究中心,陕西西安710049 [2]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室,四川绵阳621000

出　　处：《压电与声光》2017年第2期190-193,共4页Piezoelectrics & Acoustooptics

基　　金：中国工程物理研究院基础外协基金资助项目(2013-008420-168F)

摘　　要：局部放电是一种有效的高压部件绝缘性能检测方法,可通过声、光及电等信号的探测来有效预报绝缘劣化程度。该文建立了基于局部放电超声信号检测的光纤传感器测试系统,使用Mach-zehnder光干涉法来检测声信号导致的光程差,测算测量回路的微小机械形变。实际测试结果表明,该系统具有高的测试灵敏度,可精确测量纳米级的机械形变,准确反映局部放电过程引起的超声信号。采用该光纤传感系统可对多层陶瓷器件的局部放电进行跟踪测量。The partial discharge is an effective method to detect the insulation performance of high voltage components,and the degree of insulation degradation can be effectively predicted by the detection of sound,light,electricity and other signals.The optical fiber sensor test system based on the ultrasonic signal detection method of partial discharge is set up in this paper.The Mach-zehnder interferometer is used to detect the optical path difference caused by the acoustic signals and to detect the micro mechanical deformation in the measurement circuit.The practical test results show that the proposed system has a very high sensitivity,the mechanical deformation at nano-scale can be accurately measured and accurately reflect the ultrasonic signals caused by partial discharge.Using this optical fiber sensing system,the partial discharge of multilayer ceramic devices can be tracked and measured.

关 键 词：局部放电 超声波 Mach-zehnder光干涉法 光纤传感 多层陶瓷器件 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]