高压自耦变压器肺叶磁屏蔽特性的数值计算与分析

doi:10.19595/j.cnki.1000-6753.tces.L70587

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (29289 KB)
输出: BibTeX | EndNote (RIS)

摘要针对一种新型的器身磁屏蔽——肺叶磁屏蔽自身以及其在变压器中的设计问题,以一台容量为334MV•A、带有肺叶磁屏蔽的单相自耦变压器为研究对象,首先应用三维频域非线性有限元法分析了肺叶磁屏蔽对变压器结构件、绕组区域漏磁场以及杂散损耗的影响;然后,以漏磁场分析以及杂散损耗计算为手段,以变压器油箱、夹件、拉板、油箱屏蔽以及肺叶磁屏蔽的磁感应强度（或损耗密度）作为观测目标,研究肺叶磁屏蔽安装位置以及尺寸对变压器漏磁场的影响,并通过负载损耗试验将有限元计算所得结果与实验值进行对比,验证分析的有效性;最后,针对肺叶磁屏蔽自身可能出现的局部过热问题,设计三种不同的肺叶磁屏蔽油路结构,基于有限体积法对比分析不同油路结构下肺叶磁屏蔽的油流、温升特性。对肺叶磁屏蔽特性的系统分析可为其设计以及其在变压器中的设计提供指导,具有重要工程意义。

	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
	李龙女
	李岩
	刘晓明

关键词 ：自耦变压器, 肺叶磁屏蔽, 有限元法, 漏磁场, 杂散损耗, 油路

Abstract：In this paper, a 334MV•A single-phase auto-transformer with lobe-type magnetic shielding is used as the prototype model, aiming at the design problem of a novel body magnetic shielding lobe-type magnetic shielding. Firstly, the influences of the lobe-type magnetic shielding on structure parts, leakage fields in windings and stray losses are examined using three-dimensional (3-D) non-linear frequency-domain finite element method (FEM). Taken the magnetic densities (loss densities) of tank, yoke clamp, tie plate, tank shielding and lobe-type magnetic shielding as the observation targets, the influences of lobe-type magnetic shielding location and size on the leakage fields of transformer are analyzed by the leakage field analysis and stray losses calculation. The load loss experiment has verified the analysis through comparing the calculation results with the experiments. Finally, three kinds of cooling oil models about lobe-type magnetic shielding are presented, regarding the local overheating problem on lobe-type magnetic shielding itself. The analysis of the lobe-type magnetic shielding characteristics provides important guidance and engineering significance of its own design in transformer.

Key words： Auto-transformer, lobe-type magnetic shielding, finite element method, leakage magnetic field, stray losses, cooling oil

收稿日期: 2016-08-20 出版日期: 2017-12-05

PACS:

TM411.3

基金资助:国家自然科学基金（51177103）和2017年度博士后创新人才支持计划（BX201700169）资助项目

通讯作者: 李岩 1962年生,男,教授,博士生导师,研究方向为变压器、永磁电机以及工程电磁场问题。E-mail: liyanty@yahoo.com。

作者简介: 李龙女 1988年生,女,博士,讲师,研究方向为电力变压器漏磁场、短路力及热问题。E-mail: lilongnv620@163.com。

引用本文:

李龙女, 李岩, 刘晓明. 高压自耦变压器肺叶磁屏蔽特性的数值计算与分析[J]. 电工技术学报, 2017, 32(22): 134-143. Li Longnu, Li Yan, Liu Xiaoming. Numerical Calculation and Analysis of Lobe-Type Magnetic Shielding in High Voltage Auto-Transformer. Transactions of China Electrotechnical Society, 2017, 32(22): 134-143.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L70587 https://dgjsxb.ces-transaction.com/CN/Y2017/V32/I22/134

[1] 郭满生, 梅桂华, 张喜乐, 等. 直流偏磁条件下单相三柱电力变压器的损耗计算[J]. 电工技术学报, 2010, 25(7): 67-71.
Guo Mansheng, Mei Guihua, Zhang Xile, et al. Calculation of losses in single phase three limb transformer under DC-biasing[J]. Transactions of China Electrical Society, 2010, 25(7): 67-71.
[2] 王建民, 王浩名, 周少静, 等. 移相整流变压器漏磁场及电磁参数的工程算法[J]. 电工技术学报, 2015, 30(1): 8-14.
Wang Jianmin, Wang Haoming, Zhou Shaojing, et al. Engineering methods of leakage magnetic field and electromagnetic parameters for phase shifting rectifier transformers[J]. Transactions of China Electrical Society, 2015, 30(1): 8-14.
[3] 金亮, 邱运涛, 杨庆新, 等. 基于云计算的电磁问题并行计算方法[J]. 电工技术学报, 2016, 31(22): 5-11.
Jin Liang, Qiu Yuntao, Yang Qingxin, et al. A parallel computing method to electromagnetic problems based on cloud computing[J]. Transactions of China Electrical Society, 2016, 31(22): 5-11.
[4] 张艳丽, 李强, 王洋洋, 等. 谐波磁场下硅钢片磁致伸缩特性分析[J]. 电工技术学报, 2015, 30(14): 545-550.
Zhang Yanli, Li Qiang, Wang Yangyang, et al. Analysis on magnetostrictive properties of silicon steel sheet under harmonic magnetic field[J]. Transactions of China Electrical Society, 2015, 30(14): 545-550.
[5] 朱占新, 谢德馨, 张艳丽, 等. 大型电力变压器三维漏磁场与结构件损耗的时域分析[J]. 中国电机工程学报, 2012, 32(9): 156-160.
Zhu Zhanxin, Xie Dexin, Zhang Yanli, et al. Time domain analysis of 3D leakage magnetic fields and structural part losses of large power transformer[J]. Proceedings of the CSEE, 2012, 32(9): 156-160.
[6] Ho S L, Li Y, Wong H C, et al. Numerical simulation of transient force and eddy current loss in a 720-MVA power transformer [J]. IEEE Transactions on Magnetics, 2004, 40(2): 687-690.
[7] Tang Renyuan, Wang Shenghui, Li Yan, et al. Transient simulation of power transformer using 3D finite element model coupled to electric circuit equations[J]. IEEE Transactions on Magnetics, 2000, 36(4): 1417-1420.
[8] Ho S L, Li Y, Tang R Y, et al. Calculation of eddy current field in the ascending flange for the bushings and tank wall of a large power transformer [J]. IEEE Transactions on Magnetics, 2008, 44(6): 1522-1525.
[9] 康雅华, 白保东, 郭源成. 场路耦合方法在大型电力变压器三维瞬态有限元分析中的应用[J]. 电工技术学报, 2014, 29(9): 219-224.
Kang Yahua, Bai Baodong, Guo Yuancheng. Application of field-circuit coupling method of 3D transient finite element analysis for large power transformer[J]. Transactions of China Electrical Society, 2014, 29(9): 219-224.
[10] 赵志刚, 程志光, 刘福贵, 等. 基于漏磁通补偿的导磁钢板直流偏磁杂散损耗特性模拟[J]. 电工技术学报, 2015, 30(8): 38-44.
Zhao Zhigang, Cheng Zhiguang, Liu Fugui, et al. Modeling of the DC-biased stray-field loss of magnetic steel plate based on compensator of leakage flux[J]. Transactions of China Electrical Society, 2015, 30(8): 38-44.
[11] Li Longnü, Fu Weinong, Ho S L, et al. Numerical analysis and optimization of lobe-type magnetic shielding in a 334MVA single-phase auto- transformer[J]. IEEE Transactions on Magnetics, 2014, 50(11): 8500504.
[12] 胡岩. 大型电力变压器磁分路及低压引线电流漏磁效应和局部过热的研究[D]. 沈阳: 沈阳工业大学, 2001.
[13] 刘东升, 张俊杰, 赵峰, 等. 特高压特大容量变压器三维涡流场计算和防止局部过热技术的研究[J]. 变压器, 2009, 46(9): 1-5.
Liu Dongsheng, Zhang Junjie, Zhao Feng, et al. 3D eddy current field calculation and partial overheat protection technology research of UHV large transformer[J]. Transformer, 2009, 46(9): 1-5.
[14] 井永腾, 李岩, 额尔和木巴亚尔. 高压自耦变压器的涡流损耗计算与屏蔽措施[J]. 高电压技术, 2012, 38(8): 1988-1994.
Jing Yongteng, Li Yan, Eerhemubayaer. Eddy current losses calculation and shields of high voltage auto-transformer[J]. High Voltage Engineering, 2012, 38(8): 1988-1994.
[15] 程志光, 高桥则雄, 博扎德·弗甘尼, 等. 电气工程电磁热场模拟与应用[M]. 北京: 科学出版社, 2009: 340-345.
[16] 额尔禾木巴亚尔, 李岩, 孙昕, 等. 电力变压器三维涡流场计算与屏蔽问题分析[J]. 高压电器, 2011, 47(10): 69-74.
Eerhemubayaer, Li Yan, Sun Xin, et al. Calculation of 3D eddy current field and analysis of shielding in power transformer[J]. High Voltage Apparatus, 2011, 47(10): 69-74.
[17] 李琳, 崔翔, 张元禄, 等. 电力变压器三维漏磁场及铁芯拉板涡流损耗的计算[J]. 中国电机工程学报, 1999, 19(6): 33-36.
Li Lin, Cui Xiang, Zhang Yuanlu, et al. Calculation of the 3d nonlinear magnetic field and eddy current loss of the plate in transformer [J]. Proceedings of the CSEE, 1999, 19(6): 33-36.
[18] 杜永, 程志光, 颜威利, 等. 电力变压器全斜接缝叠片铁心工作条件下的磁性能模拟[J]. 电工技术学报, 2010, 25(3): 14-19.
Du Yong, Cheng Zhiguang, Yan Weili, et al. Working magnetic property modeling of the power transformer laminated core with mitred joints[J]. Transactions of China Electrical Society, 2010, 25(3): 14-19.
[19] 张俊杰, 李琳, 刘兰荣, 等. 进入硅钢叠片内的漏磁通和附加损耗的模拟实验与仿真[J]. 电工技术学报, 2013, 28(5): 148-153.
Zhang Junjie, Li Lin, Liu Lanrong, et al. Measurement and 3D FEM analysis of additional loss in laminated silicon sheets caused by leakage flux[J]. Transactions of China Electrical Society, 2013, 28(5): 148-153.
[20] 张凤阁, 杜光辉, 王天煜, 等. 兆瓦级高速永磁电机通风系统设计与转子表面风摩耗研究[J]. 电机与控制学报, 2014, 18(2): 50-55.
Zhang Fengge, Du Guanghui, Wang Tianyu, et al. Ventilation system design and research on wind friction loss of rotor surface of MW high-speed permanent magnet motor[J].Electric Machines and Control, 2014, 18(2): 50-55.