Dynamic reduction of the large-scale power systems using relation factor

H. Kim, G. Jang, K. Song

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


This paper presents a novel algorithm for developing dynamic equivalents of large-scale power systems. Generators are identified to the coherent groups according to the relation factors, which represent the relative coupling degree between the generators. While the groups are identified, participation numbers - which are the measure of the relative participation of the generators in the group - are obtained. All generators and controllers in the group are weighted by participation numbers and aggregated to construct a dynamic equivalent. The proposed algorithm is applied to a 272-machine Korea Electric Power Corporation's system. The results indicate the accuracy and usefulness of the algorithm.

Original languageEnglish
Pages (from-to)1696-1699
Number of pages4
JournalIEEE Transactions on Power Systems
Issue number3
Publication statusPublished - 2004 Aug

Bibliographical note

Funding Information:
Manuscript received March 4, 2004. This work was supported in part by the Advanced Power System Research Center, Korea University, Seoul. H. Kim is with the Power T&D, LG Industrial Systems Co., Seoul, Korea. G. Jang is with the Department of Electrical Engineering, Korea University, Seoul 136-701, Korea (e-mail: gjang@korea.ac.kr). K. Song is with the Department of Electrical Engineering, Soongsil University, Seoul, Korea. Digital Object Identifier 10.1109/TPWRS.2004.831697

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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