Simulation on Fault Diagnosis of Brush and Slip Ring System in Doubly-Fed Induction Generators Based on Temperature Field

doi:10.11930/j.issn.1004-9649.2015.12.173.5

Abstract

Abstract: A temperature field model of brush and slip ring system in doubly-fed induction generator is established in this paper by using the ANSYS software based on the principle of thermoelectric coupling. The temperature field of brush and slip ring system is calculated with the finite element method under normal operating condition, and the temperature field and current density vector distribution of the various components in the system are obtained in the paper. Then, the uneven distribution fault of brush current is simulated by loading different currents onto different brushes, and a transient simulation analysis is carried out on the brush and slip ring system under fault state. The temperature field and electric field under fault condition are compared with that under normal condition. Finally, relevant conclusions are given, which can guide the state monitoring of the temperature field and overheating fault forecast of the brush and slip ring system.

Key words: DFIG, brush, slip ring, temperature field, finite element analysis, fault diagnosis

CLC Number:

TM614

CHEN Taotao, MA Hongzhong. Simulation on Fault Diagnosis of Brush and Slip Ring System in Doubly-Fed Induction Generators Based on Temperature Field[J]. Electric Power, 2015, 48(12): 173-178.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2015.12.173.5

https://www.electricpower.com.cn/EN/Y2015/V48/I12/173

References

[1] WURFEL M, HOFMANN W. Monitoring of the transmission properties of the rotor slip ring system of doubly-fed induction generators [J]. IEEE International Conference on Electric Machines and Drives, USA, San Antonio, 2005: 295-299.
[2] 马宏忠,陈涛涛,时维俊,等. 风力发电机电刷滑环系统三维温度场分析与计算[J]. 中国电机工程学报,2013,33（30）：98-107.
MA Hongzhong, CHEN Taotao, SHI Weijun, et al . Analysis and calculation on three-dimensional temperature field of brush and slip ring systems for wind generators[J]. Proceedings of the CSEE, 2013, 33(30): 98-107.
[3] 王晓庆,毛云娇,邓亚军. 发电机滑环电刷发热的原因分析及处理方法的分析[J]. 科技创新与应用,2013,（25）：136.
[4] 王绍平. 发电机滑环电刷发热的原因分析及处理方法[J]. 华电技术,2012,34（6）：51-53.
WANG Shaoping. Reason analysis and treatment method of temperature rise of generator slip ring electric brush [J]. Huadian Technology, 2012, 34(6): 51-53.
[5] NOBORU M, TAKAHIRO U. Comparison of brush dynamic operation characteristics for turbine generator steel collector ring[J]. IEEE holm conference on Electrical contacts, USA, Pittsburgh, 2007: 205-210.
[6] 朱宝亮,杨兆雄,刘家浚. 滑动接触中摩擦温度的测定及其影响[J]. 固体滑动,1989,1：23-29.
ZHU Baoliang, YANG Zhaoxiong, LIU Jiajun. The friction temperature measurement and its effect during slip contact[J].Solid Sliding, 1989, 1: 23-29.
[7] LIU W P, ROBER W C, JOHN H G. Measurement and prediction of brush interface temperature at sliding electrical contacts[C]//Proceedings of the Thirty-Eighth IEEE Holm Conference on 1992: 143-148.
[8] GABRIELLI G, SCHWEITZER G. Thermoelastic effects on slip ring surface leading to brush vibrations [J]. IEEE Trans on Energy Conversion, 1991, 6(3): 522-528.
[9] 陈碧辉,曾旭. 发电机滑环温度的红外在线监测[J]. 云南水力发电,2006,22（5）：80-82.
CHEN Bihui, ZENG Xu. The infrared-online monitoringgenerator slip ring temperature[J]. YunNan Hydroelectric Power, 2006, 22(5)：80-82.
[10] 马宏忠. 电机状态监测与故障诊断[M]. 北京：机械工业出版社,2007：403-404.
[11] 唐德尧,曾承志,李合林. 双馈风力发电机电刷滑环故障信息分析及维修建议[J]. 风能技术,2010,6：60-65.
TANG Deyao, ZENG Chengzhi, LI Helin. The fault information analysis and maintenance suggestion of brush and slip ring in DFIG[J]. Wind Energy, 2010, 6: 60-65.
[12] 陶文铨. 传热学[M]. 西安：西北工业大学出版社,2006：180-188.
[13] BOGLIETTI A, CAVAGNINO A, LAZARRI M, et al . A simplified thermalmodel for variable-speed self-cooled induction motor[J]. IEEE Trans on Industry Applications, 2003, 39(4): 945-952.
[14] BOGLIETTI A, CAVAGNINO A, STATON D A. TEFC induction motors thermal models: a parameter sensitivity analysis[J]. IEEE Trans on Industry Applications, 2005, 41(3): 756-763.
[15] 耿道波. 发电机励磁碳刷滑环发热的分析预防和应急处理措施[J]. 电力科学与工程,2006,3：68-71.
GENG Daobo. Analysis and prevention of fever of carbon brush and slip ring for generator excitation and countermeasure[J].Electric Power Science and Engineering, 2006, 3: 68-71.
[16] 辛文彤,李志尊,胡仁喜. ANSYS 13.0热力学有限元分析[M].北京：机械工业出版社,2011：313.
[17] 陈涛涛,马宏忠.双馈异步发电机电刷滑环电阻变化理论与仿真研究[J]. 中国电力,2013,46（12）：83-89.
CHEN Taotao, MA Hongzhong. Theoretical and simulation study on resistance variations of brush and slip ring of a double-fed induction generator [J]. Electric Power, 2013, 46(12): 83-89.
[18] 雷虹云,郑超,汪宁渤,等. 基于变频器受控源模拟的双馈风机等效仿真[J]. 中国电力,2012,45（6）：82-86.
LEI Hongyun, ZHENG Chao, WANG Ningbo, et al . Equivalent simulation of doubly-fed induction generators based on controlled source models of converters [J]. Electric Power, 2012, 45(6): 82-86.