KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
권호 표지
DOI QR코드

DOI QR Code

A Study on Optimal Configuration Method of Hybrid ESS using Lead-acid and Lithium-ion Batteries for Supply of Variation Loads

변동부하 공급을 위한 하이브리드 ESS의 연축전지와 리튬이온전지의 최적구성방안에 관한 연구

  • Received : 2016.02.01
  • Accepted : 2016.03.14
  • Published : 2016.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

The large scaled lead-acid battery is widely used for efficient operation of the photovoltaic system in many islands. However, lithium-ion battery is now being introduced to mitigate the fluctuation of wind power and to replace lead-acid battery. Therefore, hybrid ESS (Energy Storage system) that combines lithium-ion battery with lead-acid battery is being required because lithium-ion battery is costly in present stage. Under this circumstance, this paper presents the optimal algorithm to create composition rate of hybrid ESS by considering fixed and variable costs in order to maximize advantage of each battery. With minimization of total cost including fixed and variable costs, the optimal composition rate can be calculated based on the various scenarios such as load variation, life cycle and cost trend. From simulation results, it is confirmed that the proposed algorithms are an effective tool to produce a optimal composition rate.

현재 대부분의 도서지역에서는 태양광발전을 효율적으로 운용하기 위하여 대용량 연축전지가 많이 사용되고 있지만, 풍력발전의 도입, 축전지 교체로 인하여 리튬이온전지의 도입이 증가하고 있다. 따라서 본 논문에서는 기존에 많이 보급되어 사용되고 있는 연축전지와 리튬이온전지의 장점을 최대한 활용하기 위하여, 연축전지와 리튬이온전지용 하이브리드 ESS의 최적 운용평가를 할 수 있는 알고리즘을 제시하였다. 상기의 알고리즘을 이용하여 시뮬레이션을 수행한 결과, 각 전지의 도입비용과 운용비용이 최소화 되는 운용조건에서 최적구성비를 산출하였다. 이에 따라 본 논문에서 제안한 하이브리드 ESS의 최적구성 알고리즘에 대한 유용성을 확인하였다.

Keywords

References

  1. Jongyun Jung and Daeseok Rho, "A Study on the Optimal Design of Hybrid-typed Electrical Energy Storage System(EESS)", Journal of KAIS (Korea Academia-Industrial Cooperation Society), Vol 15, No 1, pp. 45-47, May, 2014.
  2. Seungtaek Oh and Daeseok Rho, "A Study on the Operation Algorithm of Hybrid-typed Energy Storage System(ESS)", Journal of KAIS, Vol 15, No 1, pp. 48-50, May, 2014.
  3. KBIA (Korea Battery Industry Association), "2013 the large scale lithium-ion secondary battery cost trends and forecast", Mar, 2013.
  4. Sooyoung Park and Daeseok Rho, "A Study on the Optimal Design of Hybrid Battery Management System for Lead-acid and Li-ion Battery", Journal of KAIS, Vol 15, No 1, pp. 48-50, May, 2014.
  5. Daeseok Rho, "A Study on Load leveling effect of the distribution system using the Battery Energy Storage Systems", Fall Conference for Society A of KIEE (Korean Institute of Electrical Engineers), pp. 111-113, Oct, 2012.
  6. "SMART GRID ESS (Electric Energy Storage System)", KSGA (Korea Smart Grid Association), Sep, 2012.
  7. Jukwang Lee and Daeseok Rho, "A Study on the Current Status of Standardization in Electrical Energy Storage System", Journal of KAIS, Vol 14, No 2, pp. 557-559, May, 2013.
  8. Jaebum Park and Daeseok Rho, "A Study on the BMS Design of Lithium-ion Battery for Energy Storage System", Journal of KAIS, Vol 14, No 2, pp. 157-159, May, 2013.
  9. IEEE 308-1991, "IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations".
  10. IEEE 323-1983, "IEEE Standard for Qualifying Class 1E Equipment for Nuclear Power Generating Stations".
  11. IEEE 494-1974, "IEEE Standard Method for Identification of Documents Related to Class 1E Equipment and Systems for Nuclear Power Generating Stations".
  12. IEEE 535-1986, "IEEE Standard for Qualification of Class 1E Lead Storage Batteries for Nuclear Power Generating Stations.