一种计算变压器绕组雷电过电压分布的新算法

摘要
图/表
参考文献
相关文章 (10)

全文: PDF (759 KB)
输出: BibTeX | EndNote (RIS)

摘要基于多导体传输线理论的绕组分布参数线路模型,提出了一种计算变压器绕组雷电过电压分布的新算法。该方法首先采用有限元法计算出绕组的分布参数；利用求得的分布参数矩阵,通过频域法求解各频率下多导体传输线方程,从而获得各绕组的电压传递函数；再利用矢量匹配算法对离散的传递函数进行有理函数逼近,并通过计算时域传递函数与激励源的卷积来得到绕组分布电压响应；最后,采用Ansoft对某一型号变压器的分布参数进行计算,并在MATLAB中编写相应的计算程序,计算出过电压条件下的变压器绕组电压响应曲线,结果验证了该方法的有效性和可行性,对变压器的绝缘设计具有重要的工程指导意义。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	许加柱
	何建
	严喜林
	童皓
	黄华

关键词 ：变压器绕组, 多导体传输线模型, 电压分布, 传递函数, 雷电全波冲击

Abstract：In order to research on the voltage distribution in transformer winding suffering from the lightning surge, a simulation model of 160-turn winding based on multi-conductor transmission line (MTL) theory is established and a new method for the calculation of voltage distribution is proposed in the paper. Firstly, the finite element method(FEM) is adopted to calculate the electric parameters R, L, C and G of windings. Secondly, the voltage transfer functions are obtained by solving the MTL equations under multiple frequencies. Then, the voltage transfer functions are fitted with rational functions by vector fitting. Lastly, the voltage response in transformer winding is shaped through the convolution between the voltage transfer functions and the excitation. The simulation result confirms the validity of this proposed methodology. This research is of great significance for the insulation design of transformer.

Key words： keywords：Transformer winding multi-conductor transmission line voltage distribution transfer function lightning surge

收稿日期: 2012-09-20 出版日期: 2013-12-12

PACS:

TM315

作者简介: 许加柱男，1980年生，博士，副教授。主要从事现代电器设备的设计，优化及仿真研究，交直流电能变换系统与新技术研究及相关教学工作。何建男，1984年生，硕士研究生，研究方向为现代电气装备的高压绝缘和电磁兼容。

引用本文:

许加柱, 何建, 严喜林, 童皓, 黄华. 一种计算变压器绕组雷电过电压分布的新算法[J]. 电工技术学报, 2013, 28(1增): 115-120. Xu Jiazhu, He Jian, Yan Xilin, Tong Hao, Huang Hua. A New Algorithm of Calculating the Lightning Surge Distribution in Transformer Windings. Transactions of China Electrotechnical Society, 2013, 28(1增): 115-120.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I1增/115

[1] Shibuya Y, Fujita S, Tamaki E, Analysis of very fast transient overvoltage in transformer windings[J]. IEE Proceedings: Generation, Transmission and Distribution. 1997, 144(5): 461-468.
[2] Shibuya Y, Fujita S, Tamaki E. Analysis of very fast transients overvoltage in transformers[J]. IEE Proceedings: Generation, Transmission and Distribution, 2001, 148(5): 377-383.
[3] Popov M, Sluis L, Herdt H, Paap G, Computation of very fast transient overvoltages in transformer windings[J]. IEEE Transactions on Power Delivery, 2003, 18(4): 1268-1274.
[4] 王赞基. 变压器线圈特快速暂态建模. 中国电机工程学报[J], 1996, 16(5): 299-305.
Wang Zanji. Modeling of the very fast transient in transformer windings[J]. Proceedings of the CSEE, 1996, 16(5): 299-305.
[5] Yamashita H, Cingoski V, Nakamae E et al. Design improvements on graded insulation of power transformers using transient electric field analysis and visualization technique[J]. IEEE Transactions on Energy Conversion, 1999, 14(4): 1379-1384.
[6] Miri A M, Riegel N A, Lindenmeyer D L, Finite element and network models for the computation of the transient potential and field distribution in the winding system of high voltage power transformers[C]. Proceedings of the 6th International Conference on Optimization of Electrical and Electronic Equipments, OPTIM'98 Brasov, 1998.
[7] Y Miri A M, Riegel A A, Kuhner A. Finite element models for the computation of the transient potential and field distribution in the winding system of high voltage power transformers[C]. Eleventh International Symposium on High Voltage Engineering, UK, 1999.
[8] Miri A M, Riegel N A, Ulbricht A, et al. Finite element model for the investigation of the transient oscillations in the ITER toroidal field(TF)model coil[C]. Eleventh International Symposium on High Voltage Engineering, UK, 1999.
[9] Miri A M, Meinecke C, Riegel N A, et al. Influence of the radial plates on the transient oscillations in the ITER toroidal field(TF)model coil using a finite element approach[J]. IEEE Transactions on Applied Superconductivity, 2000, 10(1), 596-599.
[10] C R Paul. Analysis of multi-conductor transmission lines[M]. New York: John Wiley&Sons, 1994.
[11] 张喜乐, 梁贵书, 董华英, 等. 变压器绕组的特快速暂态建模[J]. 电工技术学报, 2007, 22(3): 55-59.
Zhang Xile, Liang Guishu, Dong Huaying, et al. Modeling for Simulating Very Fast Transient in Transformer Windings[J]. Transactions of China Eletrotechnical Society, 2007, 22(3): 55-59.
[12] 咸哲龙, 姜建国, 曹海翔. 电机定子结构及其绝缘介电常数的频率特性对定子绕组电容值的影响[J]. 中国电机工程学报, 2004, 24(8): 129-133.
Xian Zhelong, Jiang Jianguo, Cao Haixiang. The effect of structure and frequency characteristic of dielectric constant on capacitance of electrical machine stator winding[J]. Proceedings of the CSEE, 2004, 24(8): 129-133.
[13] 咸哲龙, 姜建国, 曹海翔, 等. 大型汽轮发电机定子线棒高频分布参数的测量[J]. 中国电机工程学报, 2004, 24(1): 65-70.
Xian Zhelong, Jiang Jianguo, Cao Haixiang, et al. Measurement of large AC electrical machine stator windings parameters at high frequency[J]. Proceedings of the CSEE, 2004, 24(1): 65-70.
[14] 彭迎, 阮江军, 张宇, 等. 脉冲变压器特快速暂态电压分布计算. 中国电机工程学报[J], 2005, 25(11): 140-145.
Peng Ying, Ruan Jiangjun, Zhang Yu, et al. Calculation of very fast transient voltage distribution in pulse transformer[J]. Proceedings of the CSEE, 2005, 25(11): 140-145.
[15] 梁贵书. 陡波前过电压下变压器的建模及快速仿真算法研究[D]. 北京：华北电力大学博士学位论文, 2007.
[16] Gustavsen B, Semlyen A. Rational Approximation of Frequency Domain Responses by Vector Fitting. IEEE Transactions on Power Delivery, 1999, 14(3): 1052-1061.
[17] 王晓晖, 董华英, 梁贵书, 等. VFTO下变压器绕组的EMTP模型[J]. 高电压技术, 2006, 32(3): 4-6.
Wang Xiaohui, Dong Huaying, Liang Guishu, et al. High-frequency EMTP model of transformer windings [J]. High Voltage Engineering. 2006, 32(3): 4-6.