基于Kerr效应法的油纸复合绝缘交直流复合电场测量

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Abstract The valve winding in the converter transformer withstands combined AC-DC voltage in normal condition. The distribution of electric filed in the valve winding is much more complicated than ordinary power transformer. In order to study the electric field distribution under combined AC-DC voltage for oil paper insulation, a combined AC-DC source was constructed. The electric field distribution of oil-paper insulation model was measured by Kerr electro-optic effect, under combined AC-DC voltage with different composite ratios of DC-AC. The results indicate that: ①AC electric field distribution is symmetric. The AC field rises up with the increase of the applied AC voltage linearly. ② DC electric field distribution is non-uniform and asymmetric caused by the difference of the space charge accumulated on the oil paper interface; the electric field intensity of the oil in the right side is much stronger than that in the left side for the insulation model with two overlapping pressboard barriers inserted into a plane oil gap.

Key words： Combined AC-DC electric field Kerr effect oil-paper insulation space charge nonlinear

Received: 20 September 2012 Published: 25 March 2014

PACS:

TM315

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[1] 张燕秉, 郑劲, 汪德华, 等. 特高压直流换流变压器的研制[J]. 高电压技术, 2010, 36(1): 255- 264.
[2] 郑劲, 文闿成. 换流变压器阀侧套管出线装置绝缘分析[J]. 高电压技术, 2010, 36(5): 1184-1190.
[3] 文凯成, 王瑞珍. 换流变压器阀侧试验对绝缘考核的有效性(上)[J]. 变压器, 1997, 34(11): 10-14.
[4] 文凯成, 王瑞珍. 换流变压器阀侧试验对绝缘考核的有效性(下)[J]. 变压器, 1997, 34(12): 28-30.
[5] 王鹏. 2007年全国直流输电系统运行可靠性分析(上)[J]. 电力设备, 2008, 9(8), 84-88.
[6] 吕晓德, 陈世坤, 孙定华, 等. 各向异性非线性直流电场数值算法研究[J]. 电工技术学报, 1998, 13(4): 60-64.
[7] 陈庆国, 张杰, 高源, 等. 混合电场作用下换流变压器阀侧绕组电场分析[J]. 高电压技术, 2008, 34(3): 484-488.
[8] 李文平, 章忠国, 黎小林, 等. 直流输电用800kV换流变压器的场域分析[J]. 变压器, 2009, 46(6): 1-5.
[9] 刘刚, 李琳, 赵小军, 等. 油-纸绝缘结构非线性交直流复合电场计算的定点频域有限元法[J]. 中国电机工程学报, 2012, 32(1): 154-161.
[10] Uno Gafvert, Albert Jaksts, Christer Tornkvist, et al. Electrical Field Distribution in transformer oil [J]. IEEE Transactions on Electrical Insulation, 1992, 27(3): 647-660.
[11] 王永红, 魏新劳, 陈庆国. 极性反转电压下油纸复合绝缘的特性[J]. 中国电机工程学报, 2012, 32(19): 161-168.
[12] Uno Gäfvert, Olof Hjortstam1, Yuriy Serdyuk, et al. Modeling and measurements of electric fields in composite oil/cellulose insulation[C]. Proceedings of the Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Kansas City, 2006: 753-756.
[13] Shimizu R, Matsuoka M, Kato K, et al. Development of Kerr electro- optic 3-d electric field measuring technique and its experimental verification[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1996, 3(2): 191-196.
[14] Takada Tatsuo, Zhu Yongchang, Maeno Takashi. Progress in japan of electrical field measurement technology for liquid dielectrics[J]. IEEE Electrical Insulation Magazine, 1996, 12(2): 8-20.
[15] Tanaka Katsuhide, Takada Tatsuo. Measurement of the 2-dimensional electric field vector in dielectric liquids[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1994, 4(1): 747-753.
[16] Szechtman M, Wess T, Thio C V. A benchmark model for HVDC system studies[C]. Proceedings of the International Conference on AC and DC Power Transmission, 1991. 374-378.
[17] Takashi Maeno, Yasuhide Nonaka, Takada Tatsuo. Determination of electric field distribution in oil using the Kerr-effect technique after application of dc voltage[J]. IEEE Transactions on Electrical Insulation, 1990, 25(3): 475-480.