光学技术, 2016, 42 (4): 325, 网络出版: 2016-12-23
基于FBG传感的油浸式电力变压器绕组温度场监测研究
Monitoring of oil-immersed power transformer winding temperature field based on FBG sensing
变压器绕组 温度场 热密度 有限元分析 光纤Bragg光栅 transformer winding temperature field heat density finite element analysis fiber Bragg grating
摘要
变压器绕组热点温度的在线实时监测对变压器的安全运行和工作寿命具有重要意义。通过ANSYS有限元分析, 仿真得到绕组的热点位置和温升范围。将一种以聚四氟乙烯材料作底板的FBG传感器通过匝间的垫片安装于绕组的热点位置, 通过光栅窄带滤波反射后, 解调拟合出光波长, 通过数学模型计算得到热点温度。采集数据显示, 测得的绕组热点温度为143.2℃, 通过与仿真结果333.4K对比, 能够及时在线地反映出绕组的热点温度, 可为变压器的安全运行提供重要的参考数据。
Abstract
The online real-time monitoring of the transformer winding hot spot temperature on the safe operation and working life of the transformer is important. By ANSYS finite element analysis, the temperature range and hot spot location of winding are simulated. FBG sensor to make a PTEE as the floor by interturn shim is mounted on hot spot location of winding. By narrowband filtering reflection grating and the demodulation fitting optical wavelength, hot temperatures are calculated by mathematial models. Collecting data show that the measured winding hot spot temperature is 143.2 ℃, and comparison with simulation results 333.4K, winding hot spot temperature can be reflected online timely, and the important reference data are provided for safe operation of the transformer.
彭庆军, 梁士斌, 姚鑫, 陈晓云, 赵振刚, 张长胜, 李川. 基于FBG传感的油浸式电力变压器绕组温度场监测研究[J]. 光学技术, 2016, 42(4): 325. PENG Qingjun, LIANG Shibin, YAO Xin, CHEN Xiaoyun, ZHAO Zhengang, ZHANG Changsheng, LI Chuan. Monitoring of oil-immersed power transformer winding temperature field based on FBG sensing[J]. Optical Technique, 2016, 42(4): 325.
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