Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (4): 14-20.doi: 10.3969/j.issn.1000-565X.2013.04.003

• Power & Electrical Engineering • Previous Articles     Next Articles

Cooperatively-Distributed Model Predictive Control of Voltage Based on Trajectory Sensitivity

Liu Shui-ping Liu Ming-bo Xie Min   

  1. School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-07-15 Revised:2012-02-15 Online:2013-04-25 Published:2013-03-01
  • Contact: 刘水平(1977-)，女，博士，东莞职业技术学院讲师，主要从事电力系统优化、运行与控制研究． E-mail:liushuiping2000@yahoo.com.cn
  • About author:刘水平(1977-)，女，博士，东莞职业技术学院讲师，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( 50907023，50777021 ) ; 广东省绿色能源技术重点实验室资助项目( 2008A060301002) ; 广东省自然科学基金博士科研启动基金资助项目( 9451064101003157)

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Abstract:

In order to overcome the limitations in voltage stability of the centralized model predictive control,a cooperatively-distributed model predictive control method based on the system partition and the predictive control modeldecomposition of voltage is constructed for large-scale power systems. In this method,a global objective cost functionis proposed with the convex combination of the objective functions of all subareas,the nodal voltage trajectory is predictedaccording to the trajectory sensitivity,and the objective cost function is transformed into a quadratic programmingfunction relevant to all control variables,thus avoiding the optimization conflicts among the subareas.Simulationson two test systems indicate that the proposed method greatly improves the calculation efficiency and achieves avoltage control performance similar to that of the centralized model predictive control.

Key words: power system, voltage stability, model predictive control, cooperative distribution, trajectory sensitivity