1.电力设备电气绝缘国家重点实验室(西安交通大学) 西安 710049 2.中国大唐西北电力试验研究所 西安 710077 3.Institute of High Voltage Engineering and System Management Graz University of Technology Graz A8010
The Broadband Dielectric Relaxation Properties of the Transformer Oil Based on SiO2 Nanoparticles Using Modified Havriliak-Negami Model
Wen Fuxin1,2, Dong Ming1, Ren Ming1, Christof Sumereder3, Michael Muhr3
1.State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University Xi’an 710049 China 2.China Datang Northwest Electric Power Test and Research Institute Xi’an 710077 China 3.Institute of High Voltage Engineering and System Management Graz University of Technology Graz A8010 Austria
Abstract：In order to understand the dielectric properties of the transformer oil based on nanofluids and explore its internal modification mechanism, this paper investigates the dielectric loss characteristics of the transformer oil based on SiO2 nanoparticles. Firstly the broadband dielectric spectroscopy of the pure transformer oil and the oil based on SiO2 nanoparticles are measured at room temperature. The measured results are fitted by the modified Havriliak-Negami model function. Then the model’s parameters are extracted and analyzed. The results indicate that, comparing with pure oil’s dielectric spectroscopy, the conduction loss in low frequency domain of SiO2 nano-modified oil decreases, while its polarization loss in higher frequency domain increases. Through analysis and discussion, it could be inferred that the microscopic electric double layer will be formed in the interfaces of nanoparticles and oil molecules after the incorporation of the SiO2 nanoparticles into the transformer oil. This microscopic structure enhances the transition barrier of the charge carriers in nanofluids, resulting in the change of macroscopic dielectric properties of the transformer oil based on nanofluids to a certain degree.
温福新, 董明, 任明, ChristofSumereder, MichaelMuhr. 基于修正的Havriliak-Negami模型的SiO2纳米改性变压器油宽频介电弛豫特性[J]. 电工技术学报, 2016, 31(7): 166-172.
Wen Fuxin, Dong Ming, Ren Ming, Christof Sumereder, Michael Muhr. The Broadband Dielectric Relaxation Properties of the Transformer Oil Based on SiO2 Nanoparticles Using Modified Havriliak-Negami Model. Transactions of China Electrotechnical Society, 2016, 31(7): 166-172.
[1] 王梦云.110 kV及以上变压器事故统计分析[J].供用电,2006,23(1):1-4,22. Wang Mengyun.Analysis of the fault statistics of transformers 110 kV and over[J].Distribution & Utilization,2006,23(1):1-4,22. [2] Choi C,Choi U S.Developments and applications of non-newtonian flows[M].New York:ASME Publication,1995. [3] Segal V,Hjortsberg A,Rabinovich A.AC (60 Hz) and impulse breakdown strength of a colloidal fluid based on transformer oil and magnetite nanoparticles[C]//IEEE International Symposium on Electrical Insulation,Arlington,VA,1998,2:619-622. [4] Hwang J G,Zahn M,O’Sullivan F M.Effects of nanoparticle charging on streamer development in transformer oil-based nanofluids[J].Journal of applied physics,2010,107(1):014310-014317. [5] Chiesa M,Das S K.Experimental investigation of the dielectric and cooling performance of colloidal suspensions in insulating media[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2009,335(1/3):88-97. [6] 周远翔,王云杉,田冀焕.纳米改性变压器油的破坏特性[J].高电压技术,2010,36(5):1155-1159. Zhou Yuanxiang,Wang Yunshan,Tian Jihuan,et al.Breakdown characteristics in transformer oil modified by nanoparticles[J].High Voltage Engineering,2010,36(5):1155-1159. [7] 沈谅平.纳米改性变压器油的制备及其特性研究[D].武汉:华中科技大学,2012. [8] 杜岳凡,吕玉珍,李成榕,等.半导体纳米粒子改性变压器油的绝缘性能及机制研究[J].中国电机工程学报,2012,32(10):177-182. Du Yuefan,Lü Yuzhen,Li Chengrong,et al.Insulating property and mechanism of semiconducting nanoparticles modified transformer oils[J].Proceedings of the CSEE,2012,32(10):177-182. [9] 刘君,周利军,吴广宁.纳米改性变压器油-纸复合绝缘频率响应特性[J].中国电机工程学报,2011,31(28):144-153. Liu Jun,Zhou Lijun,Wu Guangning.Dielectric frequency response of oil-paper composite insulation modified by nanoparticles[J].Proceedings of the CSEE,2011,31(28):144-153. [10]缪金,董明,杨彦博,等.纳米改性变压器油电导率改进模型[J].西安交通大学学报,2013,47(2):87-91. Miao Jin,Dong Ming,Yang Yanbo,et al.Modified electrical conductivity model for transformer oil-based nanofluids[J].Journal of Xi’an Jiaotong University,2013,47(2):87-91. [11]缪金,董明,温福新,等.ZnO纳米颗粒改性变压器油介质损耗模型研究[J].西安交通大学学报,2014,48(2):50-55. Miao Jin,Dong Ming,Wen Fuxin,et al.Dielectric loss model of transformer oil-based nanofluids with ZnO nanoparticles[J].Journal of Xi’an Jiaotong University,2014,48(2):50-55. [12]赵双孔.介电谱方法及应用[M].北京:化学工业出版社,2008. [13]Kremer F,Schonhals A.Broadband Dielectric Spectroscopy[M].Germany:Springer-Verlag Berlin Heidelberg,2003. [14]孙目珍.电介质物理基础[M].广州:华南理工大学出版社,2000. [15]董明,刘媛,任明.油纸绝缘频域介电谱解释方法研究[J].中国电机工程学报,2015,35(4):1002-1008. Dong Ming,Liu Yuan,Ren Ming.Explanation study of frequency-domain dielectric spectroscopy for oil-paper insulation system[J].Proceedings of the CSEE,2015,35(4):1002-1008. [16]陈季丹,刘子玉.电介质物理学[M].北京:机械工业出版社,1986. [17]Dyre J C.The random free-energy barrier model for ac conduction in disordered solids[J].Journal Applied Physics,1988,64(5):2456-2468. [18]殷之文.电介质物理学[M].北京:科学出版社,2006. [19]金维芳.电介质物理学[M].北京:机械工业出版社,1997.
2016, Vol. 31 
