Journal
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume 494, Issue -, Pages 246-249Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physc.2013.04.033
Keywords
Superconducting flywheel energy storage (SFES); Electric railway system; Peak power reduction; Regenerative energy
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Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2012R1A1A1017114]
- National Research Foundation of Korea [2012R1A1A1017114] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This paper proposes an application of the 100 kWh superconducting flywheel energy storage systems to reduce the peak power of the electric railway system. The electric railway systems have high-power characteristics and large amount of regenerative energy during vehicles' braking. The high-power characteristic makes operating cost high as the system should guarantee the secure capacity of electrical equipment and the low utilization rate of regenerative energy limits the significant energy efficiency improvement. In this paper, it had been proved that the peak power reduction and energy efficiency improvement can be achieved by using 100 kWh superconducting flywheel energy storage systems with the optimally controlled charging or discharging operations. Also, economic benefits had been assessed. (C) 2013 Elsevier B.V. All rights reserved.
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