转子绕组短路故障时发电机转子不平衡电磁力分析

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Abstract The rotor winding turn-to-turn short circuit fault is one of the main electrical faults of turbo-generators, which can cause the rotor vibration, and greatly affect the security of the generator and the power system. In this paper, firstly, the magnetomotive force superposition method of the unbalanced electromagnetic force acting on the rotor is proposed, and the equivalent magnetic flux method is improved. Then the rotor interturn short circuit fault of a QFR—400—2—20 type generator in a power plant is investigated, and the value of the unbalanced electromagnetic force is respectively calculated by the equivalent magnetic flux method and the magnetomotive force superposition method. The result shows that when the interturn short circuit turns are near the Q-axis, the unbalanced electromagnetic force that obtained by the equivalent magnetic flux method is larger than the value that calculated by the magnetomotive force superposition method because the former method doesnot consider the effect of the interturn short circuit position on the unbalanced electromagnetic force.

Key words： Generator rotor interturn short circuit unbalanced electromagnetic force equivalent magnetic flux method magnetomotive force superposition method

Received: 22 November 2011 Published: 20 March 2014

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TM351

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	Zhou Guowei
	Li Yonggang
	Wan Shuting
	Zhang Yu
	Li Heming

Cite this article:

Zhou Guowei,Li Yonggang,Wan Shuting等. Analysis on Rotor Unbalanced Electromagnetic Force of Generator under Rotor Interturn Short Circuit Fault[J]. Transactions of China Electrotechnical Society, 2012, 27(10): 120-127.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I10/120

[1] Albright D R. Interturn short-circuit detector for turbine-generator rotor windings[J]. IEEE Transactions on Power Apparatus and Systems, 1971, PAS-90(2): 478-483.
[2] Ramirez Nino J, Pascacio A. Detecting interturn short circuits in rotor windings[J]. IEEE Computer Applications in Power, 2001, 14(4): 39-42.
[3] 刘庆河, 蔡维铮, 徐殿国. 汽轮发电机转子绕组匝间短路在线检测方法的研究[J]. 中国电机工程学报, 2004, 24(9): 234-237.
Liu Qinghe, Cai Weizheng, Xu Dinaguo. Study of on-line detection of interturn short circuit in turbogenerator rotor windings[J]. Prodeedings of the CSEE, 2004, 24(9): 234-237.
[4] 阮羚, 周世平, 周理兵. 大型汽轮发电机转子匝间短路在线监测方法的研究及应用[J], 中国电机工程学报, 2001, 21(supp): 60- 63.
Ruan Ling, Zhou Shiping, Zhou Libing. The research and application of the on-line monitor method of large steam generator rotor winding inter turn short- circuit[J]. Proceedings of the CSEE, 2001, 21(supp): 60-63.
[5] 张超, 夏立, 吴正国, 等. 同步发电机转子绕组匝间短路故障特征规律分析[J]. 高电压技术, 2010, 36(6): 1506-1512.
Zhang Chao, Xia Li, Wu Zhengguo, et al. Analysis on fault characteristics law of interturn short circuit in synchronous generator rotor winding[J]. High Voltage Engineering, 2010, 36(6): 1506-1512.
[6] 李永刚, 李和明, 赵华. 汽轮发电机转子绕组匝间短路故障诊断新判据[J]. 中国电机工程学报, 2003, 23(6): 112-116, 169.
Li Yonggang, Li Heming, Zhao Hua. The new criterion on inter turn short-circuit fault diagnose of steam turbine generator rotor winding[J]. Proceedings of the CSEE, 2003, 23(6): 112-116, 169.
[7] 李之昆, 马宏忠. 基于ANN的发电机转子绕组匝间短路诊断方法[J]. 高电压技术, 2004, 30(1): 31-32, 38.
Li Zhikun, Ma Hongzhong. Diagnosis for turn-to-turn short circuit of rotor windings in turbo generator[J]. High Voltage Engineering, 2004, 30(1): 31-32, 38.
[8] 党晓强, 刘俊勇, 雷霞.水轮发电机转子绕组故障的智能在线识别[J]. 高电压技术, 2007, 33(8): 160-164.
Dang Xiaoqiang, Liu Junyong, Lei Xia. Intelligent method of on-line identifying fault of hydro-generator rotor windings[J]. High Voltage Engineering, 2007, 33(8): 160-164.
[9] 黄顺礼, 黄春阳. 定子相绕组横联电势分析及励磁绕组匝间短路故障监测[J]. 东方电气评论, 1998, 12(3): 142-145.
Huang Shunli, Huang Chunyang. Analysis of transverse electromotance in stator phase-windings and monitoring fault of shorted turns in field winding[J]. Dongfang Electric Review, 1998, 12(3): 142-145.
[10] 李和明, 万书亭, 李永刚. 基于定子绕组并联支路环流特性的发电机故障识别方法[J]. 电力系统自动化, 2005, 29(6): 75-78, 107.
Li Heming, Wan Shuting, Li Yonggang.The generator fault diagnosis method based on stator winding parallel branches circulating current[J].Automation of Electric Power Systems, 2005, 29(6): 75-78, 107.
[11] 李和明, 侯纪勇, 李俊卿, 等. 汽轮发电机励磁绕组短路多回路数学模型及电感系数[J] .高电压技术, 2010, 36(10): 2576-2581.
Li Heming. Hou Jiyong. Li Junqing, et al. Multiloop mathematical model and lnductance of lurbo-generator with field winding lnter-turn short circuits[J]. High Voltage Engineering, 2010, 36(10): 2576-2581.
[12] 朱玉壁, 洪水盛. 平圩电厂1号发电机10号轴振动分析[J].中国电力, 2000, 33(10): 45-47.
Zhu Yubi, Hong Shuisheng. Vibration analysis of shaft No.10 for generator No.1 in Pingwei power plant[J]. Electric Power, 2000, 33(10): 45-47.
[13] 李鹏, 张秀阁, 代国超. 转子匝间短路引起发电机组振动的分析及处理[J]. 华中电力, 2008, 21(2): 8-10, 13.
Li Peng, Zhang Xiuge, Dai Guochao. Analysis and treatment of vibration of turbo generator unit induced by turn-to-turn short circuit of rotor windings[J]. Central China Electric Power, 2008, 21(2): 8-10, 13.
[14] 万书亭, 李和明, 李永刚. 转子匝间短路对发电机定转子振动特性的影响[J].中国电机工程学报, 2005, 25(10): 122-126.
Wan Shuting, Li Heming, Li Yonggang. Analysis of generator vibration characteristic on rotor winding inter-turn short circuit fault[J]. Proceedings of the CSEE, 2005, 25(10): 122-126.
[15] 武玉才, 李和明, 李永刚.在线检测发电机转子绕组匝间短路的新方法[J].高电压技术, 2009, 36(12): 2698-2704.
Wu Yucai, Li Heming, Li Yonggang. New on-line diagnosis method for generator rotor winding inter-turn short circuit[J]. High Voltage Engineering, 2009, 36(12): 2698-2704.
[16] 渡边孝. 汽轮发电机转轴的热振动平衡法(热振动的解析方法)[J].国外大电机, 1997(6): 14-21.
Watanabe, Takashi. Thermal vibration balancing method for turbine generator rotor (rotor vibration analysis method due to thermal unbalance[J]. External Big Motor, 1997(6): 14-21.