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2021 Vol.41, Issue 6 Preview Page

Research Article

The Methodology of Calculating the Optimal ESS Capacity according to PV Power Generation for Grid-Connected PV-ESS System through Optimal Operation

최적 운용을 통한 연계형 PV-ESS 시스템의 PV 발전량에 따른 최적 ESS 용량 산정 방법론

Yong-Ha Kim1
,
Gyu-Rim Han2
,
Sang-Hwa Han3
,
Hye-Seon Lee3
,
Jong-Min Park3
,
Yu-ri Kim2*
김 용하1
,
한 규림2
,
한 상화3
,
이 혜선3
,
박 종민3
,
김 유리2*
1Professor, Department of Electrical Engineering, Incheon National University
2BS Candidate, Department of Electrical Engineering, Incheon National University
3Ph.D. Candidate, Department of Electrical Engineering, Incheon National University
1인천대학교 전기공학과, 교수
2인천대학교 전기공학과, 학사과정
3인천대학교 전기공학과, 박사과정
*Corresponding Author
30 December 2021. pp. 85-95
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Abstract

In this study, the method of calculating the Energy Storage System (ESS) capacity according to the amount of photovoltaic (PV) power generation was proposed, to construct a grid-connected PV-ESS system with the best economic efficiency. That is, the model was proposed to calculate the ESS capacity as the cumulative PV power generation amount in the time zone in which 1 h is added to the time of day when the weight of REC is small. To this end, scenarios for each ESS capacity were constructed based on the PV power generation of the system. In addition, a methodology was developed to determine the ESS capacity of the scenario with the minimum payback period as the optimal capacity through the establishment of an optimal operation plan for each scenario.

Keywords
Energy storage system
Optimal capacity
Optimal operation
PV-ESS system
Photovoltaic power generation
Payback period
키워드
에너지 저장 시스템
최적 용량
최적 운용
PV-ESS 시스템
태양광 발전량
투자회수기간
References
1
Lee, S. I., Economic Analysis and Policy Suggestion of Energy Storage System, Korea Energy Economics Institute (Energy Focus), Vol. 12, No. 4, p. 74, 2015.
2
Yoo, J. G., National Assembly Research Service (NARS Current Issues and Analysis), No. 140, p. 3, 2020.
3
Baek, M. K., Park, J. B., Son, S. Y., Shin, H. S., and Park, Y. G., A Study of Optimum Capacity of Battery Energy Storage System Linked PV, The Korean Institute of Electrical Engineers, Vol. 67, No. 1, pp. 38-45, 2018.
4
Lee, Y. J., Kim, S. Y., and Han, S. K., A Study on the Energy Saving Capacity of Solar Power Generation System using Economic Evaluation, The Korean Institute of Electrical Engineers, Vol. 67P, No. 1, pp. 21-26, 2018.
5
KEPCO Distribution Planning Department, Korean Grid Code for Interconnection of Distributed Energy Resources into Distribution Network, 2021.
6
Renewable One-Stop Business Information Integrated Portal, Today’s REC Market, 2021. https://onerec.kmos.kr/portal/selectBbsNttList.do?bbsNo=477&key=1970. last accessed on the 23rd April 2021.
7
KMA Weather Data Service Open MET Data Portal, Horizational Radiation in Seoul (108) observed with the Automated Synoptic Observing System, 2019-2021. https://data.kma.go.kr/data/grnd/selectAsosList.do?pgmNo=34. last accessed on the 23rd April 2021.
8
Electric Power Statistics Information System, Hourly SMP, 2020. http://epsis.kpx.or.kr/epsisnew/selectEkmaSmpShdChart.do?menuId=040202. last accessed on the 23rd April 2021.
Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 41
  • No :6
  • Pages :85-95
  • Received Date : 2021-11-05
  • Revised Date : 2021-11-18
  • Accepted Date : 2021-11-19
  • DOI :https://doi.org/10.7836/kses.2021.41.6.085
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