变压器绕组内部局放超声定位仿真及试验研究
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摘要
应用有限元方法对变压器绕组内超声信号进行仿真,验证了在变压器绕组内布置多个超声传感器进行检测和定位的方案。设计了一种新型结构的EFPI光纤传感器,可适用于变压器绕组内部的局放检测和定位。最后在35 kV变压器单相绕组中进行了传感器布置和局放定位试验。结果表明:该方法对变压器绕组中局放的定位精度在5 cm以内,实现了变压器绕组内部局部放电的精确定位,为变压器绕组内部局放信号的检测和定位提供了一种新的方法。
The ultrasonic signal in transformer winding was simulated by finite element method, and the scheme of arranging several ultrasonic sensors in the transformer winding for detection and location of partial discharge(PD) was verified. A new EFPI optical fiber sensor was designed, which was suitable for the detection and location of PD in transformer winding. Finally, the sensors were arranged in a 35 kV single phase transformer winding, and PD location tests were carried out. The results show that the positioning accuracy of PD in transformer winding by this method is less than 5 cm, realizing the accurate location of PD in transformer winding, which provides a new method for the detection and location of discharge signal in transformer winding.
The ultrasonic signal in transformer winding was simulated by finite element method, and the scheme of arranging several ultrasonic sensors in the transformer winding for detection and location of partial discharge(PD) was verified. A new EFPI optical fiber sensor was designed, which was suitable for the detection and location of PD in transformer winding. Finally, the sensors were arranged in a 35 kV single phase transformer winding, and PD location tests were carried out. The results show that the positioning accuracy of PD in transformer winding by this method is less than 5 cm, realizing the accurate location of PD in transformer winding, which provides a new method for the detection and location of discharge signal in transformer winding.
引文
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[26]XU J,PICKRELL G,WANG X,et al.A novel temperature-insensitive optical fiber pressure sensor for harsh environments[J].IEEE Photonics Technology Letters,2005,17(4):870-872.
[2]王伟,王赞,吴延坤,等.用于油中局部放电检测的Fabry-Perot光纤超声传感技术[J].高电压技术,2014,40(3):814-821.
[3]王永强,郑志宏,王壮,等.大功率高频高压变压器绝缘设计研究[J].绝缘材料,2016,49(5):49-54.
[4]AL SAEDI M A R,YAACOB M M.Partial discharge detection using acoustic and optical methods in high voltage power equipments:A review[J].Advanced Materials Research,2013,845:283-286.
[5]李燕青,王菲,王川,等.基于十字形阵列传感器的局放超声定位实验研究[J].绝缘材料,2014,47(6):74-78.
[6]徐玉琴,张宏玮,李通,等.Chaotic Monkey算法在局放源超声阵列定位中的应用[J].绝缘材料,2014,47(5):92-95,101.
[7]徐艳春,王泉,吕密.电力设备局部放电定位技术评述[J].绝缘材料,2017,50(5):6-11.
[8]谢庆.基于空间谱估计的变压器局放超声阵列定位方法研究[D].北京:华北电力大学,2010.
[9]GHOSH R,CHATTERJEE B,DALAI S.A method for the localization of partial discharge sources using partial discharge pulse information from acoustic emissions[J].IEEETransactions on Dielectrics and Electrical Insulation,2017,24(1):237-245.
[10]LIMA S E U,FRAZAO O,FARIAS R G,et al.Mandrel-based fiber-optic sensors for acoustic detection of partial discharges-A proof of concept[J].IEEE Transactions on Power Delivery,2010,25(4):2526-2534.
[11]BISWAS S,DEY D,CHATTERJEE B,et al.Cross-spectrum analysis based methodology for discrimination and localization of partial discharge sources using acoustic sensors[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(6):3556-3565.
[12]SIKORSKI W,SIODLA K,MORANDA H,et al.Location of partial discharge sources in power transformers based on advanced auscultatory technique[J].IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(6):1948-1956.
[13]LUO Y F,DU F,PAN W,et al.Study of improved RSSalgorithm for ultrasonic array applied to PD location in transformer[J].IEEE Sensors Journal,2015,15(9):4986-4991.
[14]李燕青.超声波法检测电力变压器局部放电的研究[D].北京:华北电力大学,2003.
[15]蔚超.变压器油纸绝缘局部放电特征信息及其发展特性[D].重庆:重庆大学,2010.
[16]刘化龙.变压器局放超声检测和定位技术现状及发展[J].重庆理工大学学报:自然科学版,2014,28(7):71-79.
[17]刘蓉.超声技术在变压器局部放电检测中的应用[J].电子元器件应用,2009,11(6):78-79.
[18]GUILLEN D,IDARRAGA-OSPINA G,MOMBELLO E,et al.Partial discharges location in transformer winding using wavelets and Kullback-Leibler divergence[J].Electric Power Systems Research,2016,136:398-405.
[19]肖智刚,董明,邓彦国,等.变压器内置式超高频传感器安装位置选择仿真研究[J].绝缘材料,2014,47(5):76-81,86.
[20]LI J,WATER W,ZHU B,et al.Integrated high-frequency coaxial transformer design platform using artificial neural network optimization and FEM simulation[J].IEEE Transactions on Magnetics,2015,51(3):1-4.
[21]沈崤,孙洪生.工程声学中的有限元法[J].声学学报,1981(4):249-259.
[22]杨宏.大型变压器内局部放电激发超声波的机理及其传播特性研究[D].长沙:长沙理工大学,2011.
[23]WANG X,LI B,ROMAN H T,et al.Acousto-optical PDdetection for transformers[J].IEEE Transactions on power delivery,2006,21(3):1068-1073.
[24]SONG L,COOPER K L,WANG Z,et al.Position location of partial discharges in power transformers using fiber acoustic sensor arrays[J].Optical Engineering,2006,45(11):114401.
[25]YU Z,WANG A.Fast white light interferometry demodulation algorithm for low-finesse Fabry-Pérot sensors[J].IEEEPhotonics Technology Letters,2015,27(8):817-820.
[26]XU J,PICKRELL G,WANG X,et al.A novel temperature-insensitive optical fiber pressure sensor for harsh environments[J].IEEE Photonics Technology Letters,2005,17(4):870-872.