Watt-hour metering characteristics at scott transformer in AC electric railway systems

Hansang Lee, Kyebyung Lee, Kisuk Kim, Yong Up Park, Young Soo Jeon, Sung Kwan Joo, Gilsoo Jang, Chang Hyun Park

Research output: Contribution to journalArticlepeer-review


Owing to the consistent increase in accurate analysis issue for energy consumption of the AC electric railway systems, there is controversy about the adequacy of the present watt-hour metering configuration. Due to the unusual load characteristics and facilities, the discussions have not been active. Therefore, in order to achieve more accurate watt-hour metering for AC electric railway system, this paper proposes numerical formulas for watt-hour metering that reflects the highly-varying characteristics of the railway load and the structural characteristics of the Scott transformer. The proposed formulas have been verified by comparison with site-measured data, and a more suitable metering configuration for AC railway system has been proposed.

Original languageEnglish
Pages (from-to)1398-1406
Number of pages9
JournalJournal of Electrical Engineering and Technology
Issue number3
Publication statusPublished - 2018 May


  • AC electric railway system
  • Highly-varying load characteristics
  • Regenerative power
  • Scott connection
  • Scott transformer
  • Watt-hour metering

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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