A study on determination of interface flow limits in the KEPCO system using modified continuation power flow (MCPF)

Byong Jun Lee, Hwachang Song, Sae-Hyuk Kwon, Gilsoo Jang, Jun Hwan Kim, Venkataramana Ajjarapu

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43 Citations (Scopus)


This paper reports a study on determining steady-state voltage stability limit of interface flow on a set of interface lines between the metropolitan region and the neighboring regions in the Korea Electric Power Corporation (KEPCO). The interface flow limit considering severe contingencies is determined with a concept of interface flow margin, which is the active power flow margin of the key transmission lines between one region and others under a fixed load demand condition. The paper proposes a procedure to determine secure limit of active power flow on a set of specified interface lines. The procedure uses the modified continuation power flow (MCPF) tracing a path of power flow solutions with respect to generation shift to vary interface flow. In simulation, voltage stability limits of the metropolitan interface flow of the KEPCO'98 system are determined.

Original languageEnglish
Pages (from-to)557-564
Number of pages8
JournalIEEE Transactions on Power Systems
Issue number3
Publication statusPublished - 2002 Aug 1



  • Interface flow limit
  • Korea electric power corporation (KEPCO) system
  • Modified continuation power flow (MCPF)
  • Steady-state voltage stability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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