Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (4): 95-103 125.doi: 10.3969/j.issn.1000-565X.2015.04.014

• Power & Electrical Engineering • Previous Articles     Next Articles

SVC-MERS-Based Voltage Control ofAsynchronous Generator Set in Wind Power Generation System

Wei Ye-wen Kang Long-yun Huang Zhi-zhen Qi Ru-jun   

  1. New Energy Center，School of Electric Power∥Guangdong Key Laboratory of Clean Energy Technology，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2014-06-30 Revised:2014-12-10 Online:2015-04-25 Published:2015-03-03
  • Contact: 魏业文(1987-)，男，博士生，主要从事电网无功补偿技术研究． E-mail:weiyewen8@126.com
  • About author:魏业文(1987-)，男，博士生，主要从事电网无功补偿技术研究．
  • Supported by:

    Supported by the National Natural Science Foundation for Young Scholars of China(61104181)

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Abstract: Although asynchronous generator is of simple structure，low cost and high operation reliability，its output voltage is sensitive to load fluctuation． In order to solve this problem，the voltage unbalance caused by the output power change of asynchronous generator is analyzed，the conventional phase shift control and indirect voltage con-trol schemes are improved，and a direct voltage control scheme，which adopts a novel continuous reactive power compensator SVC-MERS to stabilize the output voltage，is proposed． Then，some simulations are performed to veri-fy the effectiveness of the proposed scheme in broadening the running range and improving the current quality． Fi-nally，a simulated SVC-MERS test platform，which supplies a reactive power up to 7． 66kvar，is constructed to test the voltage stabilization performance of the asynchronous generator set． As compared with STATCOM，the proposed device is of simpler structure and less switching loss benefited from the adoption of power frequency control．

Key words: wind power generation system, voltage control, asynchronous generator, SVC-MERS, continuous re-active power compensation