Watt-Hour Metering Characteristics at Scott Transformer in AC Electric Railway Systems

  • Lee, Hansang (BK21+ Humanware IT Program, Korea University) ;
  • Lee, Kyebyung (Eco-friendly Transfer System Research Center, Pukyung National University) ;
  • Kim, Kisuk (School of Electrical Engineering, Korea University) ;
  • Park, Yong-Up (Power Distribution Laboratory, KEPRI) ;
  • Jeon, Young-Soo (Power Distribution Laboratory, KEPRI) ;
  • Joo, Sung-Kwan (School of Electrical Engineering, Korea University) ;
  • Jang, Gilsoo (School of Electrical Engineering, Korea University) ;
  • Park, Chang-Hyun (Dept. of Electrical Engineering, Pukyong National University)
  • Received : 2017.12.27
  • Accepted : 2018.02.02
  • Published : 2018.05.01


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.


Supported by : National Research Foundation of Korea (NRF)


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