Estimation of Renewable Energy Volatility and Required Adjustable Speed Pumped Storage Power Generator Capacity Considering Frequency Stability in Korean Power System

  • Min-Su Park
  • Yeong-Han ChunEmail author
  • Yu-Seok Lee
Original Article


The penetration of renewable energy sources in the world is gradually increasing, and the characteristics of the power system are changing drastically. Recently, power system has faced various problems such as reduction of inertia of system, bi-directional power supply due to micro grid, stability problem of transmission and distribution system. The volatility of renewable energy sources such as solar and wind power causes frequency stability problems, which has emerged as a major interest. Using short-term energy storage systems such as BESS and Adjustable Speed Pumped Storage Power Generator has risen as a suitable solution to solve power supply issues caused by renewable energy volatility, and it is evaluated that an adjustable speed pumped storage power generator is an alternative which can be supplied, increasing electrical power systems’ inertia and generator parameters. The study calculated power volatility of new and renewable energy sources in the future power system, and estimated the capacity of adjustable speed pumped storage power generator that is suitable for maintaining frequency within an appropriate range.


Adjustable speed pumped storage power generator Frequency stability Wind power Voltaic power Renewable energy volatility 



  1. 1.
    Ministry of trade, industry and energy. The 8th Basic Plan for Long-term Electricity Supply and Demand. 2017Google Scholar
  2. 2.
    Denholm P, Hand M (2011) Grid flexibility and storage required to achieve very high penetration of variable renewable electricity. Energy Policy 39:1817–1830CrossRefGoogle Scholar
  3. 3.
    Paul D, O’Connell M, Brinkman G, Jorgenson J (2015) Over generation from solar energy in California: a field guide to the duck chart. Tech RepGoogle Scholar
  4. 4.
    Castillo A, Gayme DF (2014) Grid-scale energy storage applications in renewable energy integration: a survey. Energy Convers Manag 87:885–894CrossRefGoogle Scholar
  5. 5.
    REN21 Secretariat, “Renewables 2017 global status report”, REN21, 2017Google Scholar
  6. 6.
    Heier S (2006) Grid integration of wind energy conversion systems, 2nd edn. Wiley, OxfordGoogle Scholar
  7. 7.
    Korean Electric Power Cooperation (2016) A study on the system impact assessment and measures considering volatility of renewable energyGoogle Scholar
  8. 8.
    Nayan MF, Safayet SM (2015) Mathematical model for determining the performance characteristics of multi-crystalline photovoltaic modules. 2015 3rd International Conference on Green Energy and Technology (ICGET)Google Scholar
  9. 9.
    Koller M, Gonzalez Vaya M, Chacko A, Borsche T, Ulbig A (2016) Primary control reserves provision with battery energy storage systems in the largest European ancillary services cooperation. CIGREGoogle Scholar
  10. 10.
    Kuwabara T (1996) Design and dynamic response characteristics of 400 MW adjustable speed pumped storage unit for Ohkawachi Power Station. Energy Convers IEEE Trans 11:376–384CrossRefGoogle Scholar
  11. 11.
    Park Min-Su, Chun Yeong-Han (2014) Effect of adjustable speed pumped storage power generator on the frequency control against the intermittence of wind turbine output. Trans Korean Inst Electr Eng 63(3):338–342CrossRefGoogle Scholar
  12. 12.
    Korean Power Exchange (2019) The Korean Power Market RuleGoogle Scholar
  13. 13.
    Anderson PM, Fouad AA (1999) Power system control and stabilityGoogle Scholar
  14. 14.
    PSSE Program Operation Manual, “Appendix H: Governor data sheet”Google Scholar
  15. 15.
    Korean Power Exchange (2018) Procurement of operation reserve considering characteristics of ESS for frequency regulationGoogle Scholar

Copyright information

© The Korean Institute of Electrical Engineers 2019

Authors and Affiliations

  1. 1.Department of Electrical and Electronic EngineeringHongik UniversitySeoulKorea
  2. 2.Electric Power Research Centre, Korean Power ExchangeNajuKorea

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