Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Optimal ESS Investment Strategies for Energy Arbitrage by Market Structures and Participants

  • Lee, Ho Chul (Power Economics Research Office, Korea Power Exchange) ;
  • Kim, Hyeongig (ICT Business Department, Hyundai Electric & Energy Systems Co., Ltd.) ;
  • Yoon, Yong Tae (epartment of Electrical and Computer Engineering, Seoul National University)
  • Received : 2017.05.15
  • Accepted : 2017.08.09
  • Published : 2018.01.01
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Abstract

Despite the advantages of energy arbitrage using energy storage systems (ESSs), the high cost of ESSs has not attracted storage owners for the arbitrage. However, as the costs of ESS have decreased and the price volatility of the electricity market has increased, many studies have been conducted on energy arbitrage using ESSs. In this study, the existing two-period model is modified in consideration of the ESS cost and risk-free contracts. Optimal investment strategies that maximize the sum of external effects caused by price changes and arbitrage profits are formulated by market participants. The optimal amounts of ESS investment for three types of investors in three different market structures are determined with game theory, and strategies in the form of the mixed-complementarity problem are solved by using the PATH solver of GAMS. Results show that when all market participants can participate in investment simultaneously, only customers invest in ESSs, which means that customers can obtain market power by operating their ESSs. Attracting other types of ESS investors, such as merchant storage owners and producers, to mitigate market power can be achieved by increasing risk-free contracts.

Keywords

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Fig. 1. Scheme of ESS ownership and operation for energyarbitrage by market participants

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Fig. 2. Two-period model: effects of energy arbitrage usingESS on price and demand in periods 1 and 2

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Fig. 3. Two-period model under TOU tariff

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Fig. 4. Two-period model under SMP with the assumptionthat ESOs are price-takers

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Fig. 5. Welfare changes in CASE 1 according to theamount of ESS for energy arbitrage by the costs ofstoring: (a) welfare changes, and (b) marginalwelfare changes

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Fig. 6. Best response functions and Nash equilibrium oftwo customers’ non-cooperative game for CASE 2

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Fig. 7. Impacts of risk-free contracts on surplus ofinvestors

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Fig. 8. Best response functions of a customer and tensymmetric MSOs and their Nash equilibria according

Table 1. Representative entities

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Table 2. Value of market and ESS parameters.

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Table 3. Total optimal amounts of ESS investment by each sector by the number of market participants (w =0).

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References

  1. J. G. Kassakian, R. Schmalensee, G. Desgroseilliers, T. D. Heidel, K. Afridi, A. Farid, ..., and I. Perez- Arriaga, The future of the electric grid, Cambridge, MA:MIT, 2011, pp.143-167.
  2. Pierluigi Siano, "Demand response and smart grids - A survey," Renewable and Sustainable Energy Reviews, vol. 30, pp. 461-478, Nov. 2014. https://doi.org/10.1016/j.rser.2013.10.022
  3. Q. Qdr, "Benefits of demand response in electricity markets and recommendations for achieving them," US department of energy, Feb. 2006.
  4. Lee Tsung-Ying, "Operating schedule of battery energy storage system in a time-of-use rate industrial user with wind turbine generators: a multipass iteration particle swarm optimization approach," IEEE Trans. Energy Conversion, vol. 22, no. 3, pp. 774-782, Sep. 2007. https://doi.org/10.1109/TEC.2006.878239
  5. H. Kim, J. H. Heo, J. Y. Park, and Y. T. Yoon, "Impact of Battery Energy Storage System Operation Strategy on Power System: An Urban Railway Load Case under a Time-of-Use Tariff," Energies, vol. 10, no. 1, Jan. 2017.
  6. W. F. Su, S. J. Huang, and C. E. Lin, "Economic analysis for demand-side hybrid photovoltaic and battery energy storage system," IEEE Trans. Industry Applications, vol. 37, no. 1, pp. 171-177, Jan./Feb. 2001. https://doi.org/10.1109/28.903143
  7. R. Sioshansi, P. Denholm, T. Jenkin, and J. Weiss, "Estimating the value of electricity storage in PJM: Arbitrage and some welfare effects," Energy economics, vol. 31, no. 2, pp. 269-277, Mar. 2009. https://doi.org/10.1016/j.eneco.2008.10.005
  8. K. Bradbury, L. Pratson, and D. Patino-Echeverri, "Economic viability of energy storage systems based on price arbitrage potential in real-time US electricity markets," Applied Energy, vol. 114, pp. 512-519, Feb. 2014. https://doi.org/10.1016/j.apenergy.2013.10.010
  9. F. C. Figueiredo, P. C. Flynn, and E. A. Cabral, "The economics of energy storage in 14 deregulated power markets," Energy Studies Review, vol. 14, no. 2, pp. 131-152, 2006.
  10. R. Sioshansi, "Welfare impacts of electricity storage and the implications of ownership structure," The Energy Journal, vol. 31, no. 2, pp. 173-198, 2010.
  11. N. Gast, J. Y. L. Boudec, A. Proutiere, and D. C. Tomozei, "Impact of storage on the efficiency and prices in real-time electricity markets," in Proceedings of the fourth international conference on Future energy systems, Berkeley, USA, Jan. 2013.
  12. K. Bradbury, L. Pratson, and D. Patino-Echeverri, "Economic viability of energy storage systems based on price arbitrage potential in real-time US electricity markets," Applied Energy, vol. 114, pp. 512-519, Feb. 2014. https://doi.org/10.1016/j.apenergy.2013.10.010
  13. S. P. Dirkse, and M. C. Ferris, "The path solver: a nommonotone stabilization scheme for mixed complementarity problems," Optimization Methods and Software, vol. 5, no. 2, pp. 123-156, 1995. https://doi.org/10.1080/10556789508805606
  14. M. C. Ferris, and T. S. Munson, "Complementarity problems in GAMS and the PATH solver," Journal of Economic Dynamics and Control, vol. 24, no. 2, pp. 165-188, Feb. 2000. https://doi.org/10.1016/S0165-1889(98)00092-X