变压器漏磁热损特征与光纤光栅监测研究  

Heat loss characteristics of transformer magnetic leakage and fiber grating monitoring

作　　者：孙媛凯 谢涛[1] 李英娜[1] 陈兴毕 赵振刚[1] 李川[1] SUN Yuan-kai XIE Tao LI Ying-na CHEN Xing-bi ZHAO Zhen-gang LI Chuan(Kunming University of Science and Technology, Faculty of Information Engineering and Automation, Kunming 650500, Chin)

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650500

出　　处：《激光与红外》2017年第1期92-97,共6页Laser & Infrared

基　　金：国家自然科学基金项目(No.51567013);云南省应用基础研究计划项目(No.2013FZ021)资助

摘　　要：近年来随着大容量变压器和电压等级的逐渐增加,变压器的结构愈加复杂,变压器的漏磁通量越来越大,漏磁问题越来越明显。采用常规电信号传感器测量变压器内部温度,难以满足要求。针对变压器内部的特殊结构研制了一种可用于变压器磁场漏磁热损分析的光纤Bragg光栅(FBG)温度传感智能测试平台。对现场采集来的测量数据进行处理并做详细分析,18∶36油箱上层温升值为49.6 K,夹件处的温升为58.3 K;2∶45油箱上层温升值分别是36.7 K,夹件处的温升为36.8 K。通过对比分析发现漏磁损耗主要部位,常规电信号传感测量方法得到改善。In recent years, with the gradual increase of large capacity transformer and voltage level, the structure of the transformer has become more complicated. The leakage magnetic flux of the transformer is more and more big, and the magnetic flux leakage problem is more and more obvious. It is difficult to meet the requirement of measuring the inter- nal temperature of the transformer by using the conventional electrical signal sensor. An optical fiber Bragg grating （FBG） temperature sensing intelligent test platform is developed for the analysis of magnetic flux leakage loss in transformer. The collected field measurement data are processed and analyzed in detail. The temperature rise of fuel tank top is 49.6 K and temperature rise of clamping piece is 58.3 K at 18 ： 36;the temperature rise of fuel tank top is 36. 7 K and temperature rise of clamping piece is 36. 8 K at 2 ： 45. Through the comparison and analysis of the mag- netic flux leakage loss in the main parts, the conventional electrical signal sensor measurement method has been im- proved.

关 键 词：漏磁通 光纤BRAGG光栅 变压器 温升 

分 类 号：TH741[机械工程—光学工程]