A Bi-level Framework for Optimal Energy Management of Electrical Energy Storage Units in Power Systems

Morteza Nazari-Heris, Behnam Mohammadi-ivatloo, Amjad Anvari-Moghaddam, Reza Razzaghi

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Abstract

This study presents a bi-level framework to obtain optimal energy management of electrical energy storage (EES) units in power systems by minimizing the operation cost of the system to satisfy daily demand and by maximizing the benefit of storage units’ owner. Two agents are considered consisting of the power system operator and the owner of EES units. The former seeks to determine the minimum operation cost of the system in providing the system load, while the latter seeks to provide its maximum profit. The power system operator has the option to supply energy by the thermal generation plants or from the storage units. The proposed bi-level model provides optimal operation strategies for both the EES owner in the outer level and the power system operator in the inner one. In other words, the decision making of the power system operator is taken into account explicitly in optimal charge/discharge scheduling of EES owner in the introduced bi-level framework. The introduced bi-level approach is applied to the IEEE RTS 24-bus network in order to assess the performance of the model.
Original languageEnglish
Article number9261370
JournalIEEE Access
Volume8
Pages (from-to)216141-216150
Number of pages10
ISSN2169-3536
DOIs
Publication statusPublished - 2020

Keywords

  • Bi-level programming
  • energy storage unit
  • operation cost minimization
  • power generation unit
  • power system operator
  • profit maximization

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