油纸绝缘系统局放光纤传感检测方法  

Partial Discharge Fiber Sensing Detection Method for Oil-Paper Insulation System

作　　者：吴巧巧 周志强[2] 陈文 邓建钢[4] 皮本熙[4] 张伟超[5] 张涛 

机构地区：[1]国网内蒙古东部电力有限公司物质分公司,内蒙古呼和浩特010020 [2]国网辽宁省电力有限公司,辽宁沈阳110004 [3]国网内蒙古东部电力有限公司检修分公司,内蒙古呼和浩特010020 [4]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [5]哈尔滨理工大学,电气与电子工程学院,黑龙江哈尔滨150080 [6]青岛汉河电缆股份有限公司,山东青岛266000

出　　处：《哈尔滨理工大学学报》2016年第4期96-100,共5页Journal of Harbin University of Science and Technology

基　　金：国家重点基础研究发展计划资助(2012CB723308);黑龙江省自然科学基金(F2015044)

摘　　要：为解决传统声测法所用压电陶瓷传感器的电磁干扰问题,设计一种光纤法-珀传感器检测局放超声波信号,并提出采用声波能量开方值表征局放量大小相关性的方法 .根据弹性力学原理分析圆形膜片的振动特性后,研究并制备非本征光纤法-珀超声波传感器.利用板-板电极系统为局放源,组建光纤传感器、压电陶瓷传感器和脉冲电流法同时检测的局放实验系统,实验结果表明,所制备光纤传感器与压电陶瓷传感器具有相近灵敏度.声波传感器信号幅值、能量开方值分别与局放量大小进行相关性分析得出,光纤波传感器和压电陶瓷传感器检测信号的能量开方值与局放量大小的相关系数高于声波幅值与其相关系数0.1左右.To solve the problem of electromagnetic interference using piezoelectric in traditional acoustic meas- urement, an optical fiber Fabry-Perot sensor is designed to detect the ultrasonic signal generated by partial discharge （ PD）, and a method of acoustic energy root value is presented to describe the correlation of PD level and acoustic signal. Based on the elastic mechanics theory, vibration characteristics of the circular diaphragm is ana- lysed, and an extrinsic fiber Fabry-Peort （FP） ultrasonic sensor is designed and manufactured. PD signals are gen- erated from plate-plate electrode system, and the PD detection system with FP sensor, PZT and impulse current method is built. Experimental results show that the fiber sensor has the same sensitivity with PZT transducer. The correlation of amplitudes and energy of square root of acoustic signals is analysed, and the results show that correla- tion coefficient of energy of square root of acoustic signals with PD level is more 0. 1 than amplitude with PD level.

关 键 词：局部放电检测 声测法 光纤传感 超声波传感器 

分 类 号：TM855[电气工程—高电压与绝缘技术]