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- W4220978052 abstract "<div> <div> <div> <p>It is well documented that space weather can impact electricity infrastructure, and several incidents have been observed in recent decades and directly linked to large geomagnetic storms (e.g. the Hydro Quebec incident in 1989). However, less is understood aboutthe impact of lower-level geomagnetically induced currents (GICs) on the health of transformers in the long term. In this study, the long term impact of geomagnetic activity&#160; on 13 power station transformers in the UK is investigated. Dissolved gas measurements&#160;from 2010&#8211;2015 were used to look for evidence of a link between degradation of the transformer and heightened levels of the global SYM-H index and dB as measured at Eskdalemuir magnetometer station in southern Scotland. First, case studies of the most significant storms in this time period were examined using dissolved gas analysis (DGA) methods, specifically the Low Energy Degradation Triangle (LEDT). These case studies were&#160;then augmented with a statistical survey, including Superposed Epoch Analysis (SEA)&#160;of multiple storm events. No evidence of a systematic space weather impact can be found&#160;during this time period, likely owing to the relatively quiet nature of the Sun during this&#160;epoch and the modernity of the transformers studied.</p> </div> </div> </div>" @default.
- W4220978052 created "2022-04-03" @default.
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- W4220978052 date "2022-03-27" @default.
- W4220978052 modified "2023-10-18" @default.
- W4220978052 title "Assessing the impact of weak and moderate geomagnetic storms on UK power station transformers" @default.
- W4220978052 doi "https://doi.org/10.5194/egusphere-egu22-3218" @default.
- W4220978052 hasPublicationYear "2022" @default.
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