Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid
Abstract Geomagnetically induced current (GIC) in utility systems such as electric power grids occurring during extreme geomagnetic storms can exceed the tolerance limit of the systems, which can cause serious system damages. It has therefore been important to evaluate the GIC levels in the utility...
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| Format: | Article |
| Language: | English |
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Wiley
2021-04-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2020SW002615 |
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| author | Han Wang Zan‐Yang Xing Nanan Balan Yan‐Ling Wang Qing‐He Zhang Li‐Kai Liang |
| author_facet | Han Wang Zan‐Yang Xing Nanan Balan Yan‐Ling Wang Qing‐He Zhang Li‐Kai Liang |
| author_sort | Han Wang |
| collection | DOAJ |
| description | Abstract Geomagnetically induced current (GIC) in utility systems such as electric power grids occurring during extreme geomagnetic storms can exceed the tolerance limit of the systems, which can cause serious system damages. It has therefore been important to evaluate the GIC levels in the utility systems. This study presents the simulation and analysis of GIC levels in the Shandong 500 kV power grid system consisting of 34 substations under a variety of uniform induced geoelectric fields. The line type, substation grounding resistance, and other influencing factors are included in the simulations. The results show that the GIC level varies largely in the 34 substations. In 11 substations, the GIC exceeds 100 A and it reaches up to ∼200 A in two substations for an assumed 1 V/km induced electric field. The changes in the GIC distribution are found consistent with the direction changes of the electric field. Utilizing the directional sensitivity, we calculate the maximum GIC level for the optimum direction for all substations. By combining this information with statistical tools, we propose a method for identifying the key substations which are most vulnerable. The result can provide suggestions for GIC disaster prevention and mitigation, substation site selection, monitoring equipment installation, and so on, in Shandong province. |
| format | Article |
| id | doaj-art-01f485af93d14ba4933b65486023f4ca |
| institution | OA Journals |
| issn | 1542-7390 |
| language | English |
| publishDate | 2021-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-01f485af93d14ba4933b65486023f4ca2025-08-20T02:35:51ZengWileySpace Weather1542-73902021-04-01194n/an/a10.1029/2020SW002615Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power GridHan Wang0Zan‐Yang Xing1Nanan Balan2Yan‐Ling Wang3Qing‐He Zhang4Li‐Kai Liang5School of Mechanical, Electrical and Information Engineering Shandong University Weihai ChinaShandong Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment School of Space Science and Physics Institute of Space Sciences Shandong University Weihai ChinaShandong Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment School of Space Science and Physics Institute of Space Sciences Shandong University Weihai ChinaSchool of Mechanical, Electrical and Information Engineering Shandong University Weihai ChinaShandong Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment School of Space Science and Physics Institute of Space Sciences Shandong University Weihai ChinaSchool of Mechanical, Electrical and Information Engineering Shandong University Weihai ChinaAbstract Geomagnetically induced current (GIC) in utility systems such as electric power grids occurring during extreme geomagnetic storms can exceed the tolerance limit of the systems, which can cause serious system damages. It has therefore been important to evaluate the GIC levels in the utility systems. This study presents the simulation and analysis of GIC levels in the Shandong 500 kV power grid system consisting of 34 substations under a variety of uniform induced geoelectric fields. The line type, substation grounding resistance, and other influencing factors are included in the simulations. The results show that the GIC level varies largely in the 34 substations. In 11 substations, the GIC exceeds 100 A and it reaches up to ∼200 A in two substations for an assumed 1 V/km induced electric field. The changes in the GIC distribution are found consistent with the direction changes of the electric field. Utilizing the directional sensitivity, we calculate the maximum GIC level for the optimum direction for all substations. By combining this information with statistical tools, we propose a method for identifying the key substations which are most vulnerable. The result can provide suggestions for GIC disaster prevention and mitigation, substation site selection, monitoring equipment installation, and so on, in Shandong province.https://doi.org/10.1029/2020SW002615electric power gridsgeoelectric fieldGIC |
| spellingShingle | Han Wang Zan‐Yang Xing Nanan Balan Yan‐Ling Wang Qing‐He Zhang Li‐Kai Liang Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid Space Weather electric power grids geoelectric field GIC |
| title | Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid |
| title_full | Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid |
| title_fullStr | Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid |
| title_full_unstemmed | Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid |
| title_short | Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid |
| title_sort | simulation and analysis of geomagnetically induced current levels in shandong power grid |
| topic | electric power grids geoelectric field GIC |
| url | https://doi.org/10.1029/2020SW002615 |
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