Integral-based inertia estimation method for power systems with high renewable integration

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The increasing integration of renewable energy sources in recent power systems has markedly altered the dynamics of system inertia. As a result, precise inertia estimation becomes essential for robust stability assessment and enhancing decision-making for grid operators. Traditional estimation methods, which primarily rely on the swing equation, frequently encounter numerical instabilities and inaccuracies, especially under conditions characterized by low or near-zero frequency derivatives. This paper proposes a novel inertia estimation method that employs an advanced integral-based formula to dynamically map and quantify inertia response across the grid. The proposed method functions independently of disturbance magnitudes and locations, and it achieves enhanced numerical stability while maintaining computational efficiency. Moreover, the integral approach employed in this method allows for a comprehensive capture of the inertia response, including both the inertia constant and the transient dynamics associated with inertia. Validation is performed on an IEEE 9-bus system that includes both traditional synchronous generators and non-traditional converter-based resources. The results reveal the superior accuracy and reliability of the proposed method, as it successfully identifies zones of weak inertia within the grid.
Original languageEnglish
Title of host publication2024 9th IEEE Workshop on the Electronic Grid (eGRID)
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages6
ISBN (Electronic)9798331505493
DOIs
Publication statusPublished - 23 Jan 2025

Publication series

NameIEEE Workshop on the Electronic Grid (eGRID)
PublisherIEEE
Volume2024
ISSN (Electronic)2831-3658

Funding

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

Keywords

  • inertia estimation
  • inertia response analysis
  • swing equation
  • low-inertia system
  • converter-interfaced generators

Fingerprint

Dive into the research topics of 'Integral-based inertia estimation method for power systems with high renewable integration'. Together they form a unique fingerprint.

Cite this