Smoothing Control of Grid-Connected Wind Power by VRB-Based Energy Storage Systems

doi:10.11930/j.issn.1004-9649.2013.8.48.5

Abstract

Abstract: In order to smooth the output of wind farms, a vanadium redox flow battery (VRB) based energy storage system (ESS) is equipped at the grid bus, in which a bi-directional AC/DC converter is used as the power regulator with the transient mathematic model derived in the synchronous rotating d-q coordinate system. Considering the characteristics of strong coupling and nonlinearity of the mathematic model, the linear transformation is conducted on the model with the state feedback exact linearization method. Then, the variable exponent reaching law of the variable structure control is used to design the close-loop controllers of the linear system. The simulation results indicate that the VRB-based energy storage system can smooth the fluctuation of wind farm outputs through fast charge and discharge process when the wind speed changes rapidly. And compared with the PI control, the variable structure controller shows better dynamic performance. In addition, the independent adjustability of active and reactive power of the VRB-based energy storage system can decouple the wind power control.

Key words: wind power integration, energy storage, vanadium redox flow battery (VRB), power control, variable structure control

CLC Number:

TM614

LIU Xiang-xiang, WANG Ben, ZHANG Xiang, MA Ming-zhi. Smoothing Control of Grid-Connected Wind Power by VRB-Based Energy Storage Systems[J]. Electric Power, 2013, 46(8): 48-53.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.8.48.5

https://www.electricpower.com.cn/EN/Y2013/V46/I8/48

References

[1] 迟永宁,刘燕华,王伟胜,等. 风电接入对电力系统的影响[J].电网技术,2007,31（3）：76-81.
CHI Yong-ning, LIU Yan-hua, WANG Wei-sheng, et al . Study on impact of wind power integration on power system[J]. Power System Technology, 2007, 31(3): 76-81.
[2] 裴哲义,董存,辛耀中. 我国风电并网运行最新进展[J]. 中国电力,2010,43（11）：78-82.
PEI Zhe-yi, DONG Cun, XIN Yao-zhong. Review of operation and management of integrating wind power in China[J]. Electric Power, 2010, 43(11): 78-82.
[3] 李善颖,石庆鑫. 大规模风电场并网运行无功补偿研究[J]. 中国电力,2010,43（9）：71-74.
LI Shan-ying, SHI Qing-xin. Study on reactive power compensation for the integration and operation of large-scale wind farms[J].Electric Power, 2010, 43(9): 71-74.
[4] LUO Chang-ling, BANAKAR H, SHEN B, et al . Strategies to smooth wind power fluctuations of wind turbine generator [J]. IEEE Trans on Energy Conversion, 2007, 22(2): 341-349.
[5] SENJYU T, SAKAMOTO R, URASAKI N, et al . Output power leveling of wind turbine generator for all operating regions by pitch angle control[J]. IEEE Trans on Energy Conversion, 2006, 21(2): 467-475.
[6] 廖勇,何金波,姚骏,等. 基于变桨距和转矩动态控制的直驱永磁同步风力发电机功率平滑控制[J]. 中国电机工程学报,2009, 29（18）：71-77.
LIAO Yong, HE Jin-bo, YAO Jun, et al . Power smoothing control strategy of direct permanent magnet synchronous generator for wind turbine with pitch angle control and torque dynamic control[J]. Proceedings of the CSEE, 2009, 29(18): 71-77.
[7] 党存禄,林国富. 基于超导储能的直驱风电系统功率平滑控制[J]. 中国电力,2013,46（1）：21-25.
DANG Cun-lu, LIN Guo-fu. Smoothing control of directly-driven wind power system with superconducting magnetic energy storage[J]. Electric Power, 2013, 46(1): 21-25.
[8] 王文亮,葛宝明,毕大强. 储能型直驱永磁同步风力发电控制系统[J]. 电力系统保护与控制,2010,38（14）：43-48,78.
WANG Wen-liang, GE Bao-ming, BI Da-qiang. Energy storage based direct-drive permanent magnet synchronous wind power control system[J]. Power System Protection and Control, 2010, 38(14): 43-48, 78.
[9] 李国杰,唐志伟,聂宏展,等. 钒液流储能电池建模及其平抑风电波动研究[J]. 电力系统保护与控制,2010,38（22）：115-119,125.
LI Guo-jie, TANG Zhi-wei, NIE Hong-zhan, et al . Modelling and controlling of vanadium redox flow battery to smooth wind power fluctuations [J]. Power System Protection and Control, 2010, 38(22): 115-119, 125.
[10] MUYEEN S M, ALI M H, TAKAHASHI R, et al . Wind generator output power smoothing and terminal voltage regulation by using STATCOM/ESS[C]// IEEE Conference of Power Tech. Lausanne,Switzerland, 2007: 1232-1237.
[11] 周雪松,权博,马幼捷,等. 超导磁储能装置在风电系统控制中的应用[J]. 中国电力,2010,43（6）：5-9.
ZHOU Xue-song, QUAN Bo, MA You-jie, et al . Applications of a super-conducting magnetic energy storage system in a wind power system [J]. Electric Power, 2010, 43(6): 5-9.
[12] 金一丁,宋强,陈晋辉,等. 大容量电池储能电网接入系统[J].中国电力,2010,43（2）：16-20.
JIN Yi-ding, SONG Qiang, CHEN Jin-hui, et al . Power conversion system of large scaled battery energy storage[J]. Electric Power,2010, 43(2): 16-20.
[13] 张步涵,曾杰,毛承雄,等. 电池储能系统在改善并网风电场电能质量和稳定性中的应用[J]. 电网技术,2006,30（15）：54-58.
ZHANG Bu-han, ZENG Jie, MAO Cheng-xiong, et al . Improvement of power quality and stability of wind farms connected to power grid by battery energy storage system[J]. Power System Technology, 2006, 30(15): 54-58.
[14] CHAHWAN J, ABBEY C, JOOS G. VRB modeling for the study of output terminal voltages, internal losses and performance[C]//Proceedings of IEEE Electrical Power Conference. Montreal, Canada: 387-392.
[15] 姚骏,廖勇,瞿兴鸿,等. 直驱永磁同步风力发电机的最佳风能跟踪控制[J]. 电网技术,2008,32（10）：11-15,27.
YAO Jun, LIAO Yong, QU Xing-hong, et al . Optimal wind-energy tracking control of direct-driven permanent magnet synchronous generators for wind turbines[J]. Power System Technology, 2008, 32(10): 11-15, 27.
[16] 刘向向,李新宇,王奔,等. 变结构控制策略在直驱永磁同步风力发电机中的应用[J]. 电网技术,2013,37（2）：520-525.
LIU Xiang-xiang, LI Xin-yu, WANG Ben, et al . Application of variable structure control strategy in direct-drive permanent magnet synchronous wind turbine generator[J]. Power System Technology, 2013, 37(2): 520-525.
[17] 毕大强,葛宝明,王文亮,等. 基于钒电池储能系统的风电场并网功率控制[J]. 电力系统自动化,2010,34（13）：72-78.
BI Da-qiang, GE Bao-ming, WANG Wen-liang, et al . VRB energy storage system based power control of grid-connected wind farm [J]. Automation of Electric Power Systems, 2010, 34(13): 72- 78.
[18] 邓卫华,张波,丘东元,等. 三相电压型PWM 整流器状态反馈精确线性化解耦控制研究[J]. 中国电机工程学报,2005,25（7）：97-103.
DENG Wei-hua, ZHANG Bo, QIU Dong-yuan, et al . The research of decoupling state variable feedback linearization control method of three-phase voltage source PWM rectifier [J]. Proceedings of the CSEE, 2005, 25(7): 97-103.