Battery Degradation Modeling in Hybrid Power Plants: An Island System Unit Commitment Study

Jianqiao Huang, Xin Fang, Xinyang Zhou, Jin Tan, Shuan Dong, Andy Hoke

Research output: Contribution to conferencePaperpeer-review

Abstract

As hybrid power plants (HPPs), such as photovoltaic (PV) and battery combinations, become increasingly important in power systems with high renewable energy penetration to address PV variability and ensure grid stability. This paper focuses on the urgent need to model the coordination between PV and battery systems in HPPs while accounting for battery degradation. We present a generation scheduling model that explicitly incorporates PV-battery hybridization in the unit commitment problem. Moreover, the cost function of the HPP scheduling problem endogenously considers battery degradation with adjustable weights to strike a balance between minimizing production costs and prolonging battery life, particularly when providing energy arbitrage and ancillary services. Using a realistic island system simulation, we demonstrate that accounting for battery degradation in the scheduling problem can significantly extend battery life with only minor additional production costs.

Original languageAmerican English
Number of pages5
DOIs
StatePublished - 2023
Event4th Annual IEEE Kansas Power and Energy Conference, KPEC 2023 - Manhattan, United States
Duration: 27 Apr 202328 Apr 2023

Conference

Conference4th Annual IEEE Kansas Power and Energy Conference, KPEC 2023
Country/TerritoryUnited States
CityManhattan
Period27/04/2328/04/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

NREL Publication Number

  • NREL/CP-5D00-87817

Keywords

  • battery degradation
  • Hybrid power plant
  • optimization
  • PV
  • unit commitment

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