A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids
The geomagnetically induced currents (GIC) caused by geomagnetic storms can inflict the anomalous operation of power systems, damaging electrical equipment, or even resulting in a large-area blackout of power systems. Therefore, to reduce the impact of GIC and avoid severe disasters has been a major...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9050721/ |
| _version_ | 1819176185582583808 |
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| author | Shu-Ming Zhang Lian-Guang Liu |
| author_facet | Shu-Ming Zhang Lian-Guang Liu |
| author_sort | Shu-Ming Zhang |
| collection | DOAJ |
| description | The geomagnetically induced currents (GIC) caused by geomagnetic storms can inflict the anomalous operation of power systems, damaging electrical equipment, or even resulting in a large-area blackout of power systems. Therefore, to reduce the impact of GIC and avoid severe disasters has been a major challenge for the development of large-scale power grids. Considering the fact that geoelectric field may have random orientation in mid-low-latitude areas, this paper employs GIC-Benchmark model, to calculate the GIC of East-China 1000kV ultra-high voltage (UHV) and 500kV extra-high voltage (EHV) power grids under a uniform geoelectric-field of 1V/km. We further analyze the characteristics and the pattern of GIC in UHV power grid and identify high-risk nodes which can be vulnerable to GIC encroachment. Then we propose installing additional resistors in the transformer neutral points of high-risk nodes to even the GIC distribution in whole networks, and make the theoretical calculation of GIC in East-China 1000kV power grid after installation. The results show that the principle of GIC-even distribution can reduce edge effect remarkably, which works well in mid-to-low- latitude areas at least, thus we expect to avoid space weather disaster in power grids with power operation scheduling and other mitigation methods. |
| first_indexed | 2024-12-22T21:06:45Z |
| format | Article |
| id | doaj.art-9d404615a8ec4d0084750645b402300a |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-22T21:06:45Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-9d404615a8ec4d0084750645b402300a2022-12-21T18:12:38ZengIEEEIEEE Access2169-35362020-01-018650966510310.1109/ACCESS.2020.29842629050721A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power GridsShu-Ming Zhang0https://orcid.org/0000-0001-9794-6465Lian-Guang Liu1State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Beijing, ChinaState Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Beijing, ChinaThe geomagnetically induced currents (GIC) caused by geomagnetic storms can inflict the anomalous operation of power systems, damaging electrical equipment, or even resulting in a large-area blackout of power systems. Therefore, to reduce the impact of GIC and avoid severe disasters has been a major challenge for the development of large-scale power grids. Considering the fact that geoelectric field may have random orientation in mid-low-latitude areas, this paper employs GIC-Benchmark model, to calculate the GIC of East-China 1000kV ultra-high voltage (UHV) and 500kV extra-high voltage (EHV) power grids under a uniform geoelectric-field of 1V/km. We further analyze the characteristics and the pattern of GIC in UHV power grid and identify high-risk nodes which can be vulnerable to GIC encroachment. Then we propose installing additional resistors in the transformer neutral points of high-risk nodes to even the GIC distribution in whole networks, and make the theoretical calculation of GIC in East-China 1000kV power grid after installation. The results show that the principle of GIC-even distribution can reduce edge effect remarkably, which works well in mid-to-low- latitude areas at least, thus we expect to avoid space weather disaster in power grids with power operation scheduling and other mitigation methods.https://ieeexplore.ieee.org/document/9050721/Geomagnetically induced currentsEHV power gridUHV power gridGIC-even distribution |
| spellingShingle | Shu-Ming Zhang Lian-Guang Liu A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids IEEE Access Geomagnetically induced currents EHV power grid UHV power grid GIC-even distribution |
| title | A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids |
| title_full | A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids |
| title_fullStr | A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids |
| title_full_unstemmed | A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids |
| title_short | A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids |
| title_sort | mitigation method based on the principle of gic even distribution in whole power grids |
| topic | Geomagnetically induced currents EHV power grid UHV power grid GIC-even distribution |
| url | https://ieeexplore.ieee.org/document/9050721/ |
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