Formal Verification of Grid Frequency Controllers

Anurag Mohapatra, Vedran S. Peric, Thomas Hamacher

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper proposes a formal verification strategy of grid frequency control using reachability analysis. Reachability analysis calculates reachable sets, which are all possible evolution of system states, or output variables, given a bounded input uncertainty. Contrary to classical grid frequency control schemes that are generally tuned based on multiple simulations, reachability analysis provides a formal guarantee for the performance of the controller in one computation stage. The proposed method is applied on the IEEE 9-Bus system. The accuracy of reachable sets is validated by simulation results with randomized inputs. In addition, the paper analyses the effect of control parameters and input uncertainties on the reachable sets. Thus, the operator can verify if their tuned frequency controller could violate any mandated grid directives without performing large number of simulations.

Original languageEnglish
Title of host publicationProceedings of 2021 IEEE PES Innovative Smart Grid Technologies Europe : Smart Grids: Toward a Carbon-Free Future, ISGT Europe 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Publication date2021
ISBN (Electronic)9781665448758
DOIs
Publication statusPublished - 2021
Event11th IEEE PES Innovative Smart Grid Technologies Europe, ISGT Europe 2021 - Espoo, Finland
Duration: 18 Oct 202121 Oct 2021

Conference

Conference11th IEEE PES Innovative Smart Grid Technologies Europe, ISGT Europe 2021
Country/TerritoryFinland
CityEspoo
Period18/10/202121/10/2021
SponsorIEEE Power and Energy Society
SeriesProceedings of 2021 IEEE PES Innovative Smart Grid Technologies Europe: Smart Grids: Toward a Carbon-Free Future, ISGT Europe 2021

Keywords

  • formal verification
  • frequency control
  • load uncertainty
  • reachability analysis
  • Reachable sets

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