Research on decomposition algorithm of DC optimal power flow in large scale interconnection power grids

  • Keyan Liu*
  • , Wanxing Sheng
  • , Yunhua Li
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This paper investigated an optimal method of optimal power flow in large scale interconnected power grids. A decomposition collaborative model based on partial duality is analyzed, and a parallel algorithm based on DC optimal power flow model is presented in multi-region decomposition of interconnected power grids. The OPF computation of large power grid is decomposed into multi regions subproblems, which is a quadratic programming problem used to solve a DC optimal power flow. The condition of multi-region optimal convergence is discussed. The information of interchanging between regions is export price and boundary nodal bus phase angle. The IEEE RTS-96 systems with two, three and four interconnected regions are studied to illustrate the effect of the proposed approach and prove to have a great future in real time OPF computation of interconnected power system.

Original languageEnglish
Pages (from-to)21-25
Number of pages5
JournalZhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
Volume26
Issue number12
StatePublished - 16 Jun 2006

Keywords

  • Area decomposition
  • Interconnected area power grid
  • Optimal power flow
  • Parallel computation
  • Partial duality
  • Quadratic programming

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