Evaluating inertia estimation methods in low-inertia power systems: a comprehensive review with analytic hierarchy process-based ranking

Mohamed Abouyehia*, Agustí Egea-Àlvarez, Khaled H. Ahmed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This paper provides a comprehensive review of inertia estimation methods, with a particular emphasis on the challenges posed by the integration of renewable energy sources (RESs). It examines a broad spectrum of inertia estimation methods, ranging from traditional swing equation-based methods to cutting-edge advancements such as machine learning and real-time analytics. These estimation methods are systematically categorised and evaluated based on key performance metrics including accuracy, simplicity, computational efficiency, and robustness against noise. The analytic hierarchy process (AHP) is used to identify the most suitable methods for low-inertia systems with high renewable energy penetration. The evaluation also includes an assessment of the temporal operational modes and the implementation requirements for the estimation methods. This leads to detailed recommendations on the most appropriate application environments for each method, considering factors such as system scale and generation mix. Existing challenges and future directions related to inertia estimation are also discussed.
Original languageEnglish
Article number115794
Number of pages20
JournalRenewable and Sustainable Energy Reviews
Volume217
Early online date28 Apr 2025
DOIs
Publication statusE-pub ahead of print - 28 Apr 2025

Funding

This work was funded by the Energy Technology Partnership (ETP) and Scottish Power.

Keywords

  • inertia estimation
  • low-inertia system
  • data-driven estimation methods
  • RoCoF
  • PMU

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