基于光纤光栅传感器的变压器储油柜油位计研究
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摘要
常规电力变压器储油柜油位采用电信号传感器进行监测,传感器信号易受变压器高电压、大电流等复杂电磁环境的干扰,针对上述不足,研究了一种基于光纤光栅传感器的变压器储油柜油位计,即光纤光栅油位计.该光纤光栅油位计主要由光纤光栅传感器和C型弹簧管组成,利用光纤光栅对应变的传感特性、液体压强与液位高度的关系实现储油柜油位的监测,是一种能有效提高变压器稳定运行的非电量监测方法.结果表明:光纤光栅油位计中心波长偏移量与储油柜油位变化呈良好的线性关系,线性拟合度均值为0.9996,灵敏度均值为4.7472 pm/dm,能够满足变压器储油柜油位的监测要求.
Conventional transformer oil level is monitored by electric signal sensor,and the sensor signals are susceptible to interference from transformer high voltage,high current and other complex electromagnetic environment. For the above shortcomings,a transformer oil level gauge based on fiber Bragg grating sensors was proposed. That was fiber bragg grating oil level gauge,which was mainly composed of a fiber bragg grating sensor and a C-type spring tube. And the oil level for transformer conservators was monitored by the strain characteristic of the fiber bragg grating and the relationship between the liquid pressure and the height of the liquid level. It was a non-electricity monitoring method to improve the stable operation of transformers. The experimental results showed that the center wavelength deviation of the fiber bragg grating oil level gauge was linear with the change of the oil level for the conservator,the average linearity fitting was 0.9996 and the average sensitivity was 4.7472 pm/dm,which was filled the monitoring requirements of the oil level in conservator.
Conventional transformer oil level is monitored by electric signal sensor,and the sensor signals are susceptible to interference from transformer high voltage,high current and other complex electromagnetic environment. For the above shortcomings,a transformer oil level gauge based on fiber Bragg grating sensors was proposed. That was fiber bragg grating oil level gauge,which was mainly composed of a fiber bragg grating sensor and a C-type spring tube. And the oil level for transformer conservators was monitored by the strain characteristic of the fiber bragg grating and the relationship between the liquid pressure and the height of the liquid level. It was a non-electricity monitoring method to improve the stable operation of transformers. The experimental results showed that the center wavelength deviation of the fiber bragg grating oil level gauge was linear with the change of the oil level for the conservator,the average linearity fitting was 0.9996 and the average sensitivity was 4.7472 pm/dm,which was filled the monitoring requirements of the oil level in conservator.
引文
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[14]MASUZAWA S,OKAZAKI S,MARU Y,et al. Catalyst-type-an optical fiber sensor for hydrogen leakage based on fiber Bragg gratings[J]. Sensors and Actuators B:Chemical,2015,217(10):151-157.
[15]张晓丽,乔月凤,梁大开.基于图论及应变花的光纤自诊断网络可靠性研究[J].信阳师范学院学报(自然科学版),2013,26(4):581-586.ZHANG Xiaoli,QIAO Yuefeng,LIANG Dakai,et al. Studies on the reliability of the optic fiber self-diagnosing network based on the graph theory and strain rosette[J]. Journal of Xinyang Normal University(Natural Science Edition),2013,26(4):581-586.
[16]白碧波,陈祺,滕坤,等.基于光纤光栅传感技术的加筋边坡模型试验[J].信阳师范学院学报(自然科学版),2012,25(1):122-126.BAI Bibo,CHEN Qi,TENG Kun,et al. Studies on model test of reinforced soil slope by fiber bragg grating sensing technology[J]. Journal of Xinyang Normal University(Natural Science Edition),2012,25(1):122-126.
[17]赵哲.光纤布拉格光栅液位传感器的实验研究[D].北京:北京化工大学,2008.ZHAO Zhe.Experimental study on the liquid level sensor of fiber bragg grating[D].Beijing:Beijing University of Chemical Technology,2008.
[18]赵恩国,焦明星,高宗海,等.直弹簧管及其应变-压力特性[J].西安理工大学学报,2003,19(2):173-176.ZHAO Enguo,JIAO Mingxing,GAO Zonghai,et al. A straight bourdon tube and its strain-pressure characteristics[J].Journal of Xi’an University of Technology,2003,19(2):173-176.
[2]杜江,张烨烨,岳帅.基于专家系统的变压器电磁优化设计[J].安徽大学学报(自然科学版),2017,41(6):79-85.DU Jiang,ZHANG Yeye,YUE Shuai.The electromagnetic optimum design of transformer based on expert system[J]. Journal of Anhui University(Natural Science Edition),2017,41(6):79-85.
[3]石林玉,谢维成,蒋文波,等.变压器套管油位雾霾图像检测方法[J].电子测量与仪器学报,2016,30(6):854-861.SHI Linyu,XIE Weicheng,JIANG Wenbo,et al. Image-based measurement method of transformer bushing oil-level in fog and haze[J]. Journal of Electronic Measurement&Instrumentation,2016,30(6):854-861.
[4]FILIPPO V,JESSICA T,VINCENZO G,et al. Effective seismic strengthening and monitoring of a masonry vault by using Glass Fiber Reinforced Cementitious Matrix with embedded Fiber Bragg Grating sensors[J]. Composites Part B:Engineering,2017,113(3):355-370.
[5]百碧波,徐洪钟,杨放,等.光纤光栅传感技术在房屋静载试验中的应用[J].信阳师范学院学报(自然科学版),2010,23(3):470-474.BAI Bibo,XU Hongzhong,YANG Fang,et al. Application analysis of FBG technology to house static load test[J]. Journal of Xinyang Normal University(Natural Science Edition),2010,23(3):470-474.
[6]李强,王艳松,刘学民.光纤温度传感器在电力系统中的应用现状综述[J].电力系统保护与控制,2010,38(1):135-140.LI Qiang,WANG Yansong,LIU Xuemin.Application situation of temperature monitoring of optic fiber sensor in power system[J]. Power System Protection and Control,2010,38(1):135-140.
[7]李遥遥,李岩松,刘君,等.基于闭环负反馈高精度电流光学传感器技术的研究[J].电力系统保护与控制,2010,38(19):165-169.LI Yaoyao,LI Yansong,LIU Jun,et al. Study on the high precision optical current transtormer based on closed loop negative feedback[J]. Power System Protection and Control,2010,38(19):165-169.
[8]赵涛.基于光纤光栅温度传感的变压器内部温度监测原理及方法研究[D].重庆:重庆大学,2008:24-40.ZHAO Tao. Monitoring principle and method of transformer internal temperature based on the FBG temperature sensing[D].Chongqing:Chongqing University,2008:24-40.
[9]李进.基于FPGA的分布式光纤光栅变压器绕组温度在线监测的研究[D].秦皇岛:燕山大学,2010:5-6.LI Jin. The study of transformer winding temperature on line monitoring using distributed fiber Bragg grating based on FPGA[D]. Qinhuangdao:Yanshan University,2010:5-6.
[10]曹海东,张俊,王容,等.基于光纤光栅传感器的电力设备触点温度监测技术[J].江苏航空,2015(1):29-31.CAO Haidong,ZHANG Jun,WANG Rong,et al.Monitoring technology of contact temperature of power equipment based on fiber bragg grating sensor[J].Jiangsu Aviation,2015(1):29-31.
[11]吕国辉,周泊宁,王朝钲,等.基于椭圆位移放大结构的光纤光栅位移传感器[J].光子学报,2018,47(11):1106002-6.LYU Guohui,ZHOU Boning,WANG Zhaozheng,et al. Fiber grating displacement sensor based on elliptical mechanical amplification structure[J]. Acta Photonica Sinica,2018,47(11):1106002-6.
[12]赵燕杰.窄线宽低噪声掺铒光纤激光器以及新型光纤气体传感器的研究[D].济南:山东大学,2014:46-52.ZHAO Yanjie.Research on narrow linewidth low noise Er3+doped fiber lasers and novel optical fiber gas sensors[D].Jinan:Shandong University,2014:46-52.
[13]ZHANG Xiaoli,WANG Peng,LIANG Dakai,et al. A soft self-repairing for FBG sensor network in SHM system based on PSO-SVR model reconstruction[J]. Optics Communications,2015,343(5):38-46.
[14]MASUZAWA S,OKAZAKI S,MARU Y,et al. Catalyst-type-an optical fiber sensor for hydrogen leakage based on fiber Bragg gratings[J]. Sensors and Actuators B:Chemical,2015,217(10):151-157.
[15]张晓丽,乔月凤,梁大开.基于图论及应变花的光纤自诊断网络可靠性研究[J].信阳师范学院学报(自然科学版),2013,26(4):581-586.ZHANG Xiaoli,QIAO Yuefeng,LIANG Dakai,et al. Studies on the reliability of the optic fiber self-diagnosing network based on the graph theory and strain rosette[J]. Journal of Xinyang Normal University(Natural Science Edition),2013,26(4):581-586.
[16]白碧波,陈祺,滕坤,等.基于光纤光栅传感技术的加筋边坡模型试验[J].信阳师范学院学报(自然科学版),2012,25(1):122-126.BAI Bibo,CHEN Qi,TENG Kun,et al. Studies on model test of reinforced soil slope by fiber bragg grating sensing technology[J]. Journal of Xinyang Normal University(Natural Science Edition),2012,25(1):122-126.
[17]赵哲.光纤布拉格光栅液位传感器的实验研究[D].北京:北京化工大学,2008.ZHAO Zhe.Experimental study on the liquid level sensor of fiber bragg grating[D].Beijing:Beijing University of Chemical Technology,2008.
[18]赵恩国,焦明星,高宗海,等.直弹簧管及其应变-压力特性[J].西安理工大学学报,2003,19(2):173-176.ZHAO Enguo,JIAO Mingxing,GAO Zonghai,et al. A straight bourdon tube and its strain-pressure characteristics[J].Journal of Xi’an University of Technology,2003,19(2):173-176.