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Measurement and Analysis of Regenerative Energy in DC 1500V Electric Traction Substation  

Bae, Chang-Han (한국철도기술연구원 도시교통기술개발센터)
Jang, Dong-Uk (한국철도기술연구원)
Kim, Ju-Rak (한국철도기술연구원)
Han, Moon-Seub (한국철도기술연구원)
Kim, Yong-Ki (한국철도기술연구원)
Publication Information
Journal of the Korean Society for Railway / v.10, no.6, 2007 , pp. 717-722 More about this Journal
Abstract
Most of DC 1500V electric railway substations have adopted diode rectifiers to supply stable DC power. However, the diode rectifiers operate in the first quadrant of the voltage-current plane and thus need regenerative inverters which transfer the surplus regenerative power caused by regenerative braking of electric train sets into the grid. In order to select the proper capacity and installation position of regenerative inverter, it needs to investigate the consumed and regenerative energy of the electric traction substations in advance. This paper presents an analysis of regenerative energy in two substations operating in Seoul Seolleung and Kwangju Yangdong substations. DC line voltage and feeder currents are measured for a day to calculate consumed and regenerative power far four feeders. We calculated an amount of regenerative energy consumed in other feeders and estimated the cost reduction in energy consumption due to the reuse of regenerative energy
Keywords
DC electric railway substation; regenerative energy; regenerative braking; regenerative inverter;
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  • Reference
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