Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (8): 133-139,150.doi: 10.3969/j.issn.1000-565X.2011.08.025

• Power & Electrical Engineering • Previous Articles     Next Articles

Secondary Voltage Emergency Control Considering Transient Voltage Stability

Liu Ming-bo  Gao Qiang  Lin Shun-jiang  Chao Zhu   

  1. School of Electric Power∥Guangdong Key Laboratory of Clean Energy Technology,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2010-09-25 Revised:2011-01-03 Online:2011-08-25 Published:2011-07-06
  • Contact: 刘明波(1964-) ，男，教授，博士生导师，主要从事电力系统优化、运行与控制研究． E-mail:epmbliu@ scut.edu.cn
  • About author:刘明波(1964-) ，男，教授，博士生导师，主要从事电力系统优化、运行与控制研究．
  • Supported by:

    国家自然科学基金资助项目( 50777021) ; 华南理工大学中央高校基金项目( 2011ZM0021)

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Abstract:

In this paper,a new set of differential-algebraic equations and a secondary voltage control ( SVC) emergency control strategy are proposed to respectively analyze and solve the power system transient voltage stability problem. In this emergency control strategy,the control time constant of SVC is reduced based on normal SVC,the voltage deviation of the bus,which is of the most serious voltage instability after system fault,is introduced in the object function of SVC,and the active set method is adopted to solve the quadratic programming model with the SVC emergency control. Moreover,a simulation model including SVC and primary voltage control ( PVC) is established for the transient voltage stability in power systems in PSAT environment. The correctness and effectiveness of the proposed control strategy and model are verified by the simulation results in the New England 39-bus system.

Key words: transient voltage stability, secondary voltage control, emergency control, quadratic programming