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Impact of Weather Extremes on the Swedish Power System
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air, Water and Landscape Sciences. Swedish Centre for Impacts of Climate Extremes (climes), Uppsala, Sweden.ORCID iD: 0000-0002-6779-4082
RISE Research institutes of Sweden; Swedish Centre for Impacts of Climate Extremes (climes) .ORCID iD: 0000-0002-7020-8275
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air, Water and Landscape Sciences. Swedish Centre for Impacts of Climate Extremes (climes), Uppsala, Sweden.ORCID iD: 0000-0002-2032-5211
2025 (English)In: 2025 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), Institute of Electrical and Electronics Engineers (IEEE), 2025Conference paper, Published paper (Refereed)
Abstract [en]

Extreme weather events increasingly challenge the reliability and resilience of modern power systems. This study presents a novel methodology for assessing weather-related disruptions by integrating two large-scale datasets: outage statistics from Swedish energy companies and meteorological hazard data from the Swedish Meteorological and Hydrological Institute (SMHI). A key contribution is the use of large language models to extract and structure relevant information from unstructured SMHI weather reports, creating a structured hazard database. The datasets are merged and analyzed in Power BI, with a focus on wind-related events. The analysis identifies over 123 000 outages linked to wind and wind-induced treefall, offering valuable insights into spatial and temporal patterns of disruption. A multi-day event window is introduced to improve event-outage matching, and the IEEE Major Event Day (MED) methodology is applied to classify extreme disruption days. The results contribute to a deeper understanding of the impact of weather on power systems and lay the groundwork for future research.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2025.
Keywords [en]
Power System Outages, Data Analysis, NLP, Power BI, Power System Resilience, Climate Extremes
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Climate Science
Identifiers
URN: urn:nbn:se:uu:diva-576287DOI: 10.1109/ISGTEurope64741.2025.11305246ISI: 001685173600014Scopus ID: 2-s2.0-105032507257ISBN: 979-8-3315-2504-0 (print)ISBN: 979-8-3315-2503-3 (electronic)OAI: oai:DiVA.org:uu-576287DiVA, id: diva2:2028470
Conference
2025 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), 20-23 October, 2025, Valletta, Malta
Part of project
Centre of excellence on Impacts of Climate Extremes under global change (ICE), Swedish Research Council
Funder
Swedish Research Council, 2022-06599Available from: 2026-01-14 Created: 2026-01-14 Last updated: 2026-06-04Bibliographically approved

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Duvnjak Zarkovic, SanjaMessori, Gabriele

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Duvnjak Zarkovic, SanjaKurfali, MurathanMessori, Gabriele
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