Risk Assessment on Factors Leading to Inter-Area Resonance

Tomi Perttula*, Janne Seppänen, Mahdi Pourakbari Kasmaei

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

This paper studies factors which may have a critical effect on the inter-area resonance phenomenon. Inter-area resonance is caused by an interaction between forced oscillation and electromechanical inter-area mode, and under certain circumstances, may lead to instability in a power system. The phenomenon is analyzed under various conditions in a Nordic 57 model which represents a simplified model of the Nordic power system. The studied factors are the location, frequency, power component, and amplitude of the forced oscillation source. The main finding is that while most studied factors affect the phenomenon, not all cause critical effects independently. However, when combined with other unfavorable factors and system operating conditions, these factors may cause severe consequences in a power system. Extensive analysis suggests that a combination of different unfavorable factors may, in fact, lead to broad power outages. Based on the results, this paper offers a risk matrix that can be used to evaluate the combined effects of different factors that may lead to high-risk situations. The risk matrix can be used by transmission system operators when evaluating inter-area resonance risks in their system.

Original languageEnglish
Title of host publication2024 IEEE Power and Energy Society General Meeting, PESGM 2024
PublisherIEEE
Number of pages5
ISBN (Electronic)979-8-3503-8183-2
DOIs
Publication statusPublished - 2024
MoE publication typeA4 Conference publication
EventIEEE Power and Energy Society General Meeting - Seattle, United States
Duration: 21 Jul 202425 Jul 2024

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Conference

ConferenceIEEE Power and Energy Society General Meeting
Abbreviated titlePESGM
Country/TerritoryUnited States
CitySeattle
Period21/07/202425/07/2024

Keywords

  • Forced oscillation
  • Inter-area oscillation
  • Inter-area resonance
  • Small-signal stability

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