[1]吴彦霖,谭向宇,马 仪,等.电场分布以及匝数偏差暂态电动力对干式空心并联电抗器影响的研究[J].高压电器,2016,52(10):99-107.[doi:10.13296/j.1001-1609.hva.2016.10.017]
 WU Yanlin,TAN Xiangyu,MA Yi,et al.Study of the Influence of Electric Field Distribution and Turns Deviation Transient Electrodynamic Force on Dry-type Air-core Shunt Reactor[J].High Voltage Apparatus,2016,52(10):99-107.[doi:10.13296/j.1001-1609.hva.2016.10.017]
点击复制

电场分布以及匝数偏差暂态电动力对干式空心并联电抗器影响的研究()
分享到:

《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第52卷
期数:
2016年10期
页码:
99-107
栏目:
研究与分析
出版日期:
2016-10-03

文章信息/Info

Title:
Study of the Influence of Electric Field Distribution and Turns Deviation Transient Electrodynamic Force on Dry-type Air-core Shunt Reactor
作者:
吴彦霖12 谭向宇2 马 仪2 王 科2 钱国超2 张 轩2 王 岩2 郭小兵2 王永红3
1. 昆明理工大学, 昆明 650000; 2. 云南电网有限责任公司电力科学研究院, 昆明 650217; 3. 哈尔滨理工大学电气与电子工程学院, 哈尔滨 150080
Author(s):
WU Yanlin12 TAN Xiangyu2 MA Yi2 WANG Ke2 QIAN Guochao2 ZHANG Xuan2 WANG Yan2 GUO Xiaobing2 WANG Yonghong3
1. Kunming University of Science and Technology, Kunming 650000, China; 2. Electric Power Research Institute of Yunnan Power Grid Companies, Kunming 650217, China; 3. Electrical and Electronic Engineering College, Harbin University of Science and Technology, Harbin 150080, China
关键词:
干式空心并联电抗器 电场分布 沿面放电 匝数偏差 暂态电动力
Keywords:
dry-type air-core shunt reactor electric field distribution surface discharge turns deviationtransient electrodynamic force
DOI:
10.13296/j.1001-1609.hva.2016.10.017
文献标志码:
A
摘要:
为了研究干式空心并联电抗器绝缘开裂、树枝状放电导致的干式空心电抗器匝间短路事故,文中采用Ansys场—路耦合有限元分析方法,对一台BKDK-20000/35大型电抗器建立仿真模型,通过对干式空心并联电抗器进行电场分布仿真并对电动力数值解析,讨论了因匝数偏差对该电抗器绝缘被破坏的可能性。研究结果表明:内部绝缘匝间电场最大场强比包封端部高;根据计算匝间场强最大值,气隙场强达到2.04 kV/mm,足以发生沿面放电;发现投入电抗器时的暂态电动力增大,并且接近稳态电动力的4倍;匝数偏差造成有偏差层线圈投入暂态电动力的相位发生横向改变,电动力最大值也明显增加。因沿面放电和暂态电动力对匝间绝缘材料起老化和破坏作用,因此会造成干式空心电抗器匝间短路事故,这为干式空心电抗器的事故分析提供依据。
Abstract:
In order to study the inter-turn short circuit accident of dry type air core reactor, which is caused by insula-tion cracking and branch discharge of dry type air core shunt reactor, this paper using Ansys field circuit coupled fi-nite element analysis method, a BKDK-20000/35 large reactor simulation model is established, through the simulation of the electric field distribution and the numerical analysis of the electrodynamic force for dry-type air-core shunt reac-tor,the insulation destroyed possibility caused by inter-turns deviation of the reactor is discussed. The results show that the maximum electric field strength in internal insulation inter-turn is higher than that in packet blocking. According to the calculation value of inter-turn maximum electric field strength, the air gap field strength reaches 2.04 kV/mm, which is sufficient to occur the surface discharge. It is found that the transient electrodynamic force increases when the reactor is input, and it is close to 4 times of the steady state electrodynamic force.Turns deviation will cause the phase lateral changed of the transient electrodynamic force in the deviation layer coil, the maximum value of the transient electrodynamic force is also increased significantly. The surface discharge and the transient electrodynamic force will be aging and failure to inter-turn insulation material. Therefore, it will cause the inter-turn short circuit accident of dry-type air-core reactor, which provides the basis for the accident analysis of dry-type air-core reactor.

参考文献/References:

[1] 汪泉弟,张 艳,李永明,等. 干式空心电抗器周围工频磁场分布[J]. 电工技术学报,2009,24(1):8-13. WANG Quandi, ZHANG Yan, LI Yongming, et al. The power frequency magnetic field distribution around dry-type air-core reactor[J]. Transactions of China Electrotech-nical Society, 2009, 24(1):8-19.
[2] 王建民,景崇友,武卫革,等. 特高压干式平波电抗器电流分布和漏磁场特性的数值分析[J]. 变压器,2010,47(8):20-23. WANG Jianmin, JING Chongyou, WU Weige, et al. Nu-merical analysis of current distribution and leakage mag-netic field characteristics of EHV dry-type smoothing reac-tor[J]. Transformer, 2010, 47(8):20-23.
[3] 徐林峰,林一峰,王永红,等. 干式空心电抗器匝间过电压试验技术研究[J]. 高压电器,2012,48(7):71-75. XU Linfeng,LIN Yifeng,WANG Yonghong,et al. Study on the technology of inter turn over voltage test of dry type air core reactor[J]. High Voltage Apparatus, 2012,48(7):71-75.
[4] NAKATA T,TAKAHASHI N,FUJIWARA K,et at.Finite element analysis of induced currents in axisymetric multi-conductors connected in parallel to voltage sources[J]. IEEE Transactions on Magnetics,1990,26(2):968-970.
[5] 朱东柏,林连山,周满秋. 户外干式空心并联电抗器沿面放电的探讨[J]. 变压器,1998,35(7):7-10. ZHU Dongbai, LIN Lianshan, ZHOU Manqiu. Discussion of creeping discharge in outdoor air-core shunt reactor[J]. Transformer, 1998, 35(7):7-10.
[6] 路宝民. 关于户外干式空心电抗器的树和匝间短路问题的探讨[J]. 电工技术杂志,2000(10):17-19. LU Baomin. Study about trees and between turn short cir-cuit of the outdoor dry-type air-core reactor[J]. Electro-tech-nical Journal ,2000(10):17-19.
[7] 李禀坚. 35 kV干式空心并联电抗器运行故障分析[J]. 科技信息,2012(27):129-185. LI Bingjian. Fault analysis of 35 kV dry type air core shunt reactor[J]. Scientific and Technological Information, 2012(27):129-185.
[8] 崔志刚,谭向宇. 35 kV干式空心并联电抗器运行情况分析[C]//2012年云南电力技术论坛论文集. 昆明:云南电网公司,云南省电机工程学会,2012:4-8. CUI Zhigang,TAN Xiangyu. Analysis on operation of 35 kV dry type hollow shunt reactor[C]//2012 Yunnan Electric Power Technology Forum. Kunming: Yunnan Power Grid Co.,Electric Engineering Society,2012:4-8.
[9] SALAMA.A calculation method for voltage distribution in a large air core power reactor[J]. IEEE Transactions on Magnetics,1981,100(4):1752-1758.
[10] TADASU T,TADASHI K. Recent development in electric field calculation[J]. IEEE Transactions on Magnetics,1999,33(2):1155-1160.
[11] 崔志刚. 干式空心并联电抗器故障原因分析探讨[J]. 变压器,2012,49(3):61-63. CUI Zhigang, Analysis and discussion on fault in dry-type shunt reactor with air core[J]. Transformer, 2012, 49(3):61-63.
[12] 钱之银,杨凌辉,朱 峰,等. 并联干式电抗器故障原因分析[J]. 华东电力,2000(12):10-13. QIAN Zhiyin, YANG Linghui, ZHU Feng, et al. Discussion on fault in dry-type shunt reactor with air core[J]. East China Electric Power, 2000(12):10-13.
[13] 聂喜玲,黎大健,赵 坚. 干式空心电抗器损坏原因分析及对策[J]. 广西电力,2013,36(2): 29-31. NIE Xiling,LI Dajian,ZHAO Jian.Analysis and counter-measures of dry type air core reactor damage[J]. Guangxi Electric Power,2013,36(2): 29-31.
[14] 王耀龙. 干式空心并联电抗器多起损坏原因分析[J]. 电气技术,2012(7):55-57. WANG Yaolong. Analysis of dry-type air core shunt reactor fault cases[J]. Electrical Engineering,2012(7):55-57.
[15] 沈宏伟,马 仪,崔志刚,等. 干式空心并联电抗器投入瞬态电动力研究[J]. 哈尔滨理工大学学报,2014(6):93-97. SHEN Hongwei, MA Yi, CUI Zhigang, et al. Study on transient electric power of dry type air core shunt reactor[J], Journal of Harbin University of Science and Technol-ogy,2014(6):93-97.
[16] 赵延山. 空心电抗器电场及电动力问题分析[D]. 济南:山东大学,2012. ZHAO Yanshan.Analysis on electric field and electromag-netic force of air-core reactor[D]. Jinan:Shandong Univer-sity,2012.
[17] STEINBIGLER H,HALLER D,WOLF A.Comparative analysis ofmethods for computing 2D and 3D electric fields[J]. IEEE Transactions on Electrical Insulation . 1991,26(3):529-536.
[18] 倪学锋,林 浩,沈 静,等. 干式并联电抗器包封进水对运行可靠性影响的试验研究[J]. 电力设备,2006,7(12):4-6. NI Xuefeng,LIN Hao,SHEN Jing,et al.Research of influence of watered sealing of dry-type shunt reactor on operation reliability[J]. Electrical Equipment,2006,7(12):4-6.
[19] 叶占刚. 干式空心电抗器的温升试验与绕组温升的计算[J]. 变压器,1999,36(9):6-12. YE Zhangang. Temperature rise test of dry-type air-core reactor and calculation of its winding temperature rise[J]. Transformer, 1999, 36(9):6-12.
[20] CRISTINA D A,CAIUBY A D,ROBERTO D C,et al. Electromagnetic environment measurement under steady-state conditions in utility substations[C]// Transmission & Dis-tribution Conference and Exposition. Latin America[s.n.]:2006:1-6.

备注/Memo

备注/Memo:
收稿日期:2016-02-25; 修回日期:2016-04-21 吴彦霖(1991—),女,硕士,研究方向为变压器以及配网技术。 谭向宇(1980—),男,博士,从事高压试验研究工作。
更新日期/Last Update: 1900-01-01