Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization
H-polarization, along with E-polarization, indicates the lateral variations of the Earth conductivity, which influence the induced electric field distribution. The coast effect is a typical H-polarization phenomenon that causes local geoelectric field enhancement in coastal areas and significantly a...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8598868/ |
| _version_ | 1831645356540035072 |
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| author | Chunming Liu Xuan Wang Shuming Zhang Chunze Xie |
| author_facet | Chunming Liu Xuan Wang Shuming Zhang Chunze Xie |
| author_sort | Chunming Liu |
| collection | DOAJ |
| description | H-polarization, along with E-polarization, indicates the lateral variations of the Earth conductivity, which influence the induced electric field distribution. The coast effect is a typical H-polarization phenomenon that causes local geoelectric field enhancement in coastal areas and significantly affects the geomagnetically induced currents (GIC) distributions in power grids. The influences of H-polarization on geoelectric fields and GIC form the basis for further research on power grid disasters resulting from magnetic storms. In this paper, block and thin-shell models of the coast effect are established, and the electric field distribution in the case of H-polarization is calculated using the finite element method. The results demonstrate the effects of the conductivity, frequency, and distance from the interface of a different conductivity on electric field distortion. Additionally, the relationship between H-polarization and GIC in power grids is investigated, demonstrating that the GIC can be influenced within 100 km in the H-polarization case. The methods and results provide a theoretical basis for GIC risk assessment and development of a control strategy for the power grid. |
| first_indexed | 2024-12-19T13:34:13Z |
| format | Article |
| id | doaj.art-8b30d0f914694979a2996811764c5064 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T13:34:13Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-8b30d0f914694979a2996811764c50642022-12-21T20:19:15ZengIEEEIEEE Access2169-35362019-01-0176310631810.1109/ACCESS.2018.28894628598868Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-PolarizationChunming Liu0https://orcid.org/0000-0002-0564-4476Xuan Wang1Shuming Zhang2Chunze Xie3School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, ChinaSchool of Electrical and Electronic Engineering, North China Electric Power University, Beijing, ChinaSchool of Electrical and Electronic Engineering, North China Electric Power University, Beijing, ChinaSchool of Electrical and Electronic Engineering, North China Electric Power University, Beijing, ChinaH-polarization, along with E-polarization, indicates the lateral variations of the Earth conductivity, which influence the induced electric field distribution. The coast effect is a typical H-polarization phenomenon that causes local geoelectric field enhancement in coastal areas and significantly affects the geomagnetically induced currents (GIC) distributions in power grids. The influences of H-polarization on geoelectric fields and GIC form the basis for further research on power grid disasters resulting from magnetic storms. In this paper, block and thin-shell models of the coast effect are established, and the electric field distribution in the case of H-polarization is calculated using the finite element method. The results demonstrate the effects of the conductivity, frequency, and distance from the interface of a different conductivity on electric field distortion. Additionally, the relationship between H-polarization and GIC in power grids is investigated, demonstrating that the GIC can be influenced within 100 km in the H-polarization case. The methods and results provide a theoretical basis for GIC risk assessment and development of a control strategy for the power grid.https://ieeexplore.ieee.org/document/8598868/Finite element method (FEM)geomagnetically induced currents (GIC)coast effect |
| spellingShingle | Chunming Liu Xuan Wang Shuming Zhang Chunze Xie Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization IEEE Access Finite element method (FEM) geomagnetically induced currents (GIC) coast effect |
| title | Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization |
| title_full | Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization |
| title_fullStr | Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization |
| title_full_unstemmed | Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization |
| title_short | Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization |
| title_sort | effects of lateral conductivity variations on geomagnetically induced currents h polarization |
| topic | Finite element method (FEM) geomagnetically induced currents (GIC) coast effect |
| url | https://ieeexplore.ieee.org/document/8598868/ |
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