An Innovative Operation Strategy of ESS for Capacity Expansion of Renewable Energy and Customer Load with Electric Vehicle Chargers in Low Voltage Distribution Systems

Kyung-Sang Ryu, Dae-Jin Kim, Yang-Hyun Nam, Heesang Ko, Byungki Kim and Ho-Chan Kim
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Kyung-Sang Ryu: Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup 63357, Jeju Specific Self-Governing Province, Korea
Dae-Jin Kim: Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup 63357, Jeju Specific Self-Governing Province, Korea
Yang-Hyun Nam: Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup 63357, Jeju Specific Self-Governing Province, Korea
Heesang Ko: Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup 63357, Jeju Specific Self-Governing Province, Korea
Byungki Kim: Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup 63357, Jeju Specific Self-Governing Province, Korea
Ho-Chan Kim: Department of Electrical Engineering, Jeju National University, 102 Jejudaehak-ro, Jeju-si 63243, Jeju Special Self-Governing Province, Korea

Energies, 2019, vol. 12, issue 24, 1-22

Abstract: This paper proposes an innovative operation strategy to extend the acceptance of EVC (Electric Vehicle Charger) and RES (Renewable Energy Resource) in LVDS (Low Voltage Distribution System) by introducing an ESS (Energy Storage System). In conventional LVDS, the load and RES capacity are designed not to exceed the pole transformer capacity. However, when the ESS is connected to the end of LVDS and the bidirectional power flow becomes possible, the linkable capacity of the load and renewable energy can be improved up to twice the capacity of the pole transformer. In addition, even though the power consumption of the load and the power generation of RES exceed the pole transformer capacity, it is possible to maintain the feeder capacity and grid voltage within the allowable limit by the appropriate operation of the ESS. The simulations are performed in the environment of PSCAD/EMTDC, and the ability of the proposed strategy is assessed and discussed.

Keywords: energy storage system; power control algorithm; capacity expansion; low voltage distribution system; PSCAD/EMDC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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