A countermeasure for preventing flexibility deficit under high-level penetration of renewable energies: A robust optimization approach

Jinwoo Jeong, Heewon Shin, Hwachang Song, Byong Jun Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An energy paradigm shift has rapidly occurred around the globe. One change has been an increase in the penetration of sustainable energy. However, this can affect the reliability of power systems by increasing variability and uncertainty from the use of renewable resources. To improve the reliability of an energy supply, a power system must have a sufficient amount of flexible resources to prevent a flexibility deficit. This paper proposes a countermeasure for protecting nonnegative flexibility under high-level penetration of renewable energy with robust optimization. The proposed method is divided into three steps: (i) constructing an uncertainty set with the capacity factor of renewable energy, (ii) searching for the initial point of a flexibility deficit, and (iii) calculating the capacity of the energy storage system to avoid such a deficit. In this study, robust optimization is applied to consider the uncertainty of renewable energy, and the results are compared between deterministic and robust approaches. The proposed method is demonstrated on a power system in the Republic of Korea.

Original languageEnglish
Article number4159
JournalSustainability (Switzerland)
Volume10
Issue number11
DOIs
Publication statusPublished - 2018 Nov 12

Keywords

  • Deficit
  • Energy storage systems
  • Flexibility
  • Flexible resource
  • Renewable energy
  • Robust optimization
  • Uncertainty

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Management, Monitoring, Policy and Law

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