Reliability evaluation considering operational active power variation of wind power converter

被引：0
|
作者：
Li, Hui [1 ]
Ji, Haiting [1 ]
Qin, Xing [1 ]
Chen, Yaojun [1 ]
Liu, Shengquan [1 ]
Hu, Yaogang [1 ]
Ran, Li [1 ]
Tang, Xianhu [2 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
[2] Chongqing KK-QIANWEI Wind Power Equipment Co. Ltd., Chongqing
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2015年 / 35卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Electric converters; Evaluation; Failure rate; Multi-state; Power fluctuation; Probability model; Reliability; Wind power;
D O I：
10.16081/j.issn.1006-6047.2015.05.001
中图分类号：
学科分类号：
摘要：
As the operational active power variation of wind power converter may decrease its reliability, a multi-state probability evaluation model of converter reliability is proposed, which considers the effect of active power magnitude and fluctuation. Based on the multi-state probability analysis method and with the power magnitude and fluctuation as 2-D state allocation factors, corresponding to the thermal stress factor and temperature cycling factor, a unified component failure rate calculation model is proposed for wind power converter. Combined with the rain-flow method, the junction temperature calculation method is applied to extract the information of junction temperature cycling and a multi-state probability evaluation model of subsystem reliability is thus established for wind power converter. With the SCADA information of a wind farm as an example, the convergency of proposed reliability evaluation model is compared to that of another evaluation method and the effect of active power magnitude and fluctuation on the failure rates of generator- side and grid-side converters is analyzed, which show that, the proposed reliability evaluation model can better reflect the effect of power variation on the average junction temperature and junction temperature fluctuation of components, the failure rate of generator-side converter is higher than that of grid-side converter, and the converter failure rate increases along with the increase of power fluctuation. ©, 2015, Electric Power Automation Equipment Press. All right reserved.
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页码：1 / 8
页数：7
相关论文
共 21 条
  • [1] Blaabjerg F., Liserre M., Ma K., Power electronics converters for wind turbine systems, IEEE Transactions on Industry Applications, 48, 2, pp. 708-719, (2011)
  • [2] Amirat Y., Benbouzid M., Ahmar E.A., Et al., A brief status on condition monitoring and fault diagnosis in wind energy conversation systems, Renewable and Sustainable Energy Reviews, 13, 9, pp. 2629-2636, (2009)
  • [3] Zhou L., Wu J., Du X., Et al., Status and outlook of power converter's reliability research, Journal of Power Supply, 45, 1, pp. 1-15, (2013)
  • [4] Zhao J., Yuan Y., Fu Z., Et al., Reliability assessment of wind-PV hybrid generation system based on Copula theory, Electric Power Automation Equipment, 33, 1, pp. 124-129, (2013)
  • [5] Yang J., Jin X., Wu X., Et al., Power stack design of MW-level full-power grid-connected converter for wind power generation, Electric Power Automation Equipment, 33, 10, pp. 21-27, (2013)
  • [6] Spinato F., Tavner P.J., Van Bussel G.J.W., Et al., Reliability of wind turbine subassemblies, IET Renewable Power Generation, 3, 4, pp. 1-15, (2009)
  • [7] Tavner P., Offshore Wind Turbines Reliability Availability & Maintenance, (2012)
  • [8] Yang S., Xiang D., Bryant A., Et al., Condition monitoring for device reliability in power electronic converters: a review, IEEE Transactions on Power Electronics, 25, 11, pp. 2734-2752, (2010)
  • [9] Zou G., Zhao Z., Yuan L., Et al., Systematic safe operating area of dual-PWM converter and its application, Electric Power Automation Equipment, 34, 3, pp. 82-88, (2014)
  • [10] Chen G., Gurgos R., Liang Z., Et al., Reliability-oriented design considerations for high-power converter modules, 35th Annual IEEE Power Electronics Specialists Conference, pp. 419-425, (2004)
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