Coordinated preventive control of transient stability with multi-contingency in power systems using trajectory sensitivities

Y. H. Li, W. P. Yuan, Ka Wing Chan, M. B. Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)


In this paper, the challenging multi-contingency transient stability constrained optimal power flow problem is partitioned into two sub-problems, namely optimal power flow (OPF) and transient stability control, solved in turn with conventional well trusted power system analysis tools instead of tackling it directly using a complicated integrated approach. Preventive multi-contingency transient stability control is carried out with generation rescheduling based on trajectory sensitivities using results obtained from a conventional transient stability simulation. A new iterative approach is proposed to optimally redistribute the generation from the critical machines to noncritical machines with the help of conventional OPF. Results on the New England 10-machine 39-bus systems demonstrate that the proposed method is capable of handling multiple contingencies and complex power system models effectively with solution quantity and time comparable with conventional integrated approaches.
Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalInternational Journal of Electrical Power and Energy Systems
Issue number1
Publication statusPublished - 1 Jan 2011


  • Generation rescheduling
  • Multi-contingency
  • Optimal power flow
  • Trajectory sensitivity
  • Transient stability

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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