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http://dx.doi.org/10.7836/kses.2020.40.3.021

Analysis of Energy Saving Effect of the Residential BESS Connected to the Balcony-PV in Apartment Houses  

Kim, Cha-Nyeon (Department of Living and Built Environment Research, Korea Institute of Civil Engineering and Building Technology)
Eum, Ji-Young (Department of Living and Built Environment Research, Korea Institute of Civil Engineering and Building Technology)
Kim, Yong-Ki (Department of Living and Built Environment Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korean Solar Energy Society / v.40, no.3, 2020 , pp. 21-31 More about this Journal
Abstract
The government mandates gradually zero energy building and Photovoltaic power generation systems installed in buildings are emerging as the most realistic alternative to increase the independence rate of building energy. In this study, we propose a method to reduce the power consumption of households by increasing the PV capacity of balconies and applying the method used the charged electric power stored in batteries after sunset. In order to evaluate the electric power energy savings of the residential BESS, a balcony PV 1.2 kW and a battery pack 2 kWh were installed for 9 houses in 4 apartments in Seoul and Gyeonggi-do. The BESS is charged when the balcony PV is generated electric power, and when solar power generation is finished, it supplies power to the electric appliances connected to the load. As a result of installing the solar PV module 1.2 kW and 2 kWh class BESS for 3 households located in Seoul and Gyeonggi-do, the average electric power consumption saving rate was 40%. The reduction in electricity consumption in the case of zero generation surplus power by maximizing the utilization rate of BESS has been improved to about 53%. Therefore, in order to increase the self-sufficiency rate of electric energy in apartment houses, it is effective to increase the solar photovoltaic capacity of the balcony and apply the residential BESS. In the future, it is believed that the balcony PV and home BESS will play a key role in achieving mandatory zero-energy housing.
Keywords
Balcony photovoltaic power system; Battery energy storage system, BESS; Surplus power; LiFePO4 battery; Zero energy building;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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3 Eum, J. Y. and Kim, Y. K., Economical Analysis of the PV-linked Residential ESS using HOMER in Korea, Journal of the Korea Academia-Industrial cooperation Society, Vol. 20, No. 2, pp. 36-42, 2019.   DOI
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