Analysis of Long‐Term GIC Measurements in Transformers in Austria
Abstract Geomagnetically induced currents (GICs), a result of solar wind interaction with the Earth's magnetic field and the resistive ground, are known to flow in power transmission grids, where they can lead to transformer damage and grid operation problems. In this study we present an analys...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2021SW002912 |
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| author | D. Albert P. Schachinger R. L. Bailey H. Renner G. Achleitner |
| author_facet | D. Albert P. Schachinger R. L. Bailey H. Renner G. Achleitner |
| author_sort | D. Albert |
| collection | DOAJ |
| description | Abstract Geomagnetically induced currents (GICs), a result of solar wind interaction with the Earth's magnetic field and the resistive ground, are known to flow in power transmission grids, where they can lead to transformer damage and grid operation problems. In this study we present an analysis of five years of continuous GIC measurements in transformer neutral points in Austria. Seven self‐designed stand‐alone measurement systems are currently installed in the Austrian 220 and 380 kV transmission levels, measuring currents up to 25 A. We identify recurrent geomagnetic activity in the measurements, and also find man‐made sources of low frequency currents using frequency analysis. In order to support the transmission grid operators, two GIC simulation approaches are used to simulate GICs in the power grid. The first model uses measurements to derive the sensitivity of the location to northward and eastward geoelectric field components (which requires no detailed grid data), and the second model uses the detailed grid model to compute GICs from a geoelectric field. We evaluate two geomagnetic storms from September 2017 and May 2021 to discuss the effects of GICs on the power transmission grid and its assets. |
| format | Article |
| id | doaj-art-2c1dce4835c24bc9b5bb381097dd67f1 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-2c1dce4835c24bc9b5bb381097dd67f12025-01-14T16:35:20ZengWileySpace Weather1542-73902022-01-01201n/an/a10.1029/2021SW002912Analysis of Long‐Term GIC Measurements in Transformers in AustriaD. Albert0P. Schachinger1R. L. Bailey2H. Renner3G. Achleitner4Institute of Electrical Power Systems Graz University of Technology Graz AustriaInstitute of Electrical Power Systems Graz University of Technology Graz AustriaConrad Observatory Zentralanstalt für Meteorologie und Geodynamik Vienna AustriaInstitute of Electrical Power Systems Graz University of Technology Graz AustriaAustrian Power Grid AG Vienna AustriaAbstract Geomagnetically induced currents (GICs), a result of solar wind interaction with the Earth's magnetic field and the resistive ground, are known to flow in power transmission grids, where they can lead to transformer damage and grid operation problems. In this study we present an analysis of five years of continuous GIC measurements in transformer neutral points in Austria. Seven self‐designed stand‐alone measurement systems are currently installed in the Austrian 220 and 380 kV transmission levels, measuring currents up to 25 A. We identify recurrent geomagnetic activity in the measurements, and also find man‐made sources of low frequency currents using frequency analysis. In order to support the transmission grid operators, two GIC simulation approaches are used to simulate GICs in the power grid. The first model uses measurements to derive the sensitivity of the location to northward and eastward geoelectric field components (which requires no detailed grid data), and the second model uses the detailed grid model to compute GICs from a geoelectric field. We evaluate two geomagnetic storms from September 2017 and May 2021 to discuss the effects of GICs on the power transmission grid and its assets.https://doi.org/10.1029/2021SW002912geomagnetically induced currenttransformerGICpower system simulation |
| spellingShingle | D. Albert P. Schachinger R. L. Bailey H. Renner G. Achleitner Analysis of Long‐Term GIC Measurements in Transformers in Austria Space Weather geomagnetically induced current transformer GIC power system simulation |
| title | Analysis of Long‐Term GIC Measurements in Transformers in Austria |
| title_full | Analysis of Long‐Term GIC Measurements in Transformers in Austria |
| title_fullStr | Analysis of Long‐Term GIC Measurements in Transformers in Austria |
| title_full_unstemmed | Analysis of Long‐Term GIC Measurements in Transformers in Austria |
| title_short | Analysis of Long‐Term GIC Measurements in Transformers in Austria |
| title_sort | analysis of long term gic measurements in transformers in austria |
| topic | geomagnetically induced current transformer GIC power system simulation |
| url | https://doi.org/10.1029/2021SW002912 |
| work_keys_str_mv | AT dalbert analysisoflongtermgicmeasurementsintransformersinaustria AT pschachinger analysisoflongtermgicmeasurementsintransformersinaustria AT rlbailey analysisoflongtermgicmeasurementsintransformersinaustria AT hrenner analysisoflongtermgicmeasurementsintransformersinaustria AT gachleitner analysisoflongtermgicmeasurementsintransformersinaustria |