Enhanced Energy Management System with Corrective Transmission Switching Strategy - Part I: Methodology

Xingpeng Li, Kory W. Hedman

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


The flexibility in transmission networks is not fully utilized in existing energy management systems (EMSs). Corrective transmission switching (CTS) is proposed in this two-part paper to enable EMS to take advantage of the flexibility in transmission systems in a practical way. This paper proposes the following two EMS procedures: first, Procedure-A connects real-time security-constrained economic dispatch (RT SCED) with real-time contingency analysis (RTCA), which is consistent with industrial practice; and second, Procedure-B, an enhanced version of Procedure-A, includes CTS in EMS with the proposed concept of branch pseudo limit used in RT SCED. Part-I of this paper presents the methodology, whereas Part-II includes detailed results analysis. It is demonstrated that Procedure-A can effectively eliminate the base case overloads and the potential post-contingency overloads identified by RTCA, and Procedure-B can achieve significant congestion cost reduction with consideration of CTS in RT SCED. Numerical simulations also illustrate that integrating CTS into RT SCED would improve social welfare.

Original languageEnglish (US)
Article number8736407
Pages (from-to)4490-4502
Number of pages13
JournalIEEE Transactions on Power Systems
Issue number6
StatePublished - Nov 2019


  • Corrective transmission switching
  • energy management systems
  • power system reliability
  • real-time contingency analysis
  • real-time security-constrained economic dispatch

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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