Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions
This study conducted experiments and simulations to examine the DC corona-generated space charge characteristics and understand the performance of high-voltage direct current (HVDC) transmission lines. In experimental studies, various gradient temperatures are tested on a standard model of the poten...
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MDPI AG
2025-05-01
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| Online Access: | https://www.mdpi.com/1996-1073/18/11/2872 |
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| _version_ | 1849331008773554176 |
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| author | Jules Simplice Djeumen Hendrick Musawenkosi Langa Trudy Sutherland |
| author_facet | Jules Simplice Djeumen Hendrick Musawenkosi Langa Trudy Sutherland |
| author_sort | Jules Simplice Djeumen |
| collection | DOAJ |
| description | This study conducted experiments and simulations to examine the DC corona-generated space charge characteristics and understand the performance of high-voltage direct current (HVDC) transmission lines. In experimental studies, various gradient temperatures are tested on a standard model of the potential HVDC transmission line in Southern Africa using an indoor corona cage. Initial tests on the single-line model of aluminium TERN conductors measured the DC corona inception voltages (CIVs) as the ambient temperature increased from 25 °C to 42 °C. A daylight ultraviolet corona camera (CoroCam8) has been used for measurements and visualisation; the measurements record temperatures for positive and negative direct current (DC) voltages. Experimental investigations are supplemented by simulations utilising the finite element method (FEM)-based software COMSOL Multiphysics. Following the creation of 3D models of the corona cage and potential conductor arrangement, the electric field distribution on the surfaces of the conductors was examined. The CIV observations and modelling findings determine the setups’ corona inception electric field strengths. The study effectively integrated experimental data from a corona cage with FEM models to assess DC corona properties across different air temperatures thoroughly. The inception voltage levels of corona are significantly influenced by ambient temperature and the space charge generated by corona. The outcomes of the discussion will inform the design of the proposed HVDC transmission line in Southern Africa. |
| format | Article |
| id | doaj-art-2e9a267ef55440c68c5b675d2db532c1 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-2e9a267ef55440c68c5b675d2db532c12025-08-20T03:46:46ZengMDPI AGEnergies1996-10732025-05-011811287210.3390/en18112872Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature ConditionsJules Simplice Djeumen0Hendrick Musawenkosi Langa1Trudy Sutherland2Department of Electrical Engineering, Faculty of Engineering and Technology, Vaal University of Technology, Vanderbijlpark 1900, South AfricaDepartment of Electrical Engineering, Faculty of Engineering and Technology, Vaal University of Technology, Vanderbijlpark 1900, South AfricaDepartment of Electrical Engineering, Faculty of Engineering and Technology, Vaal University of Technology, Vanderbijlpark 1900, South AfricaThis study conducted experiments and simulations to examine the DC corona-generated space charge characteristics and understand the performance of high-voltage direct current (HVDC) transmission lines. In experimental studies, various gradient temperatures are tested on a standard model of the potential HVDC transmission line in Southern Africa using an indoor corona cage. Initial tests on the single-line model of aluminium TERN conductors measured the DC corona inception voltages (CIVs) as the ambient temperature increased from 25 °C to 42 °C. A daylight ultraviolet corona camera (CoroCam8) has been used for measurements and visualisation; the measurements record temperatures for positive and negative direct current (DC) voltages. Experimental investigations are supplemented by simulations utilising the finite element method (FEM)-based software COMSOL Multiphysics. Following the creation of 3D models of the corona cage and potential conductor arrangement, the electric field distribution on the surfaces of the conductors was examined. The CIV observations and modelling findings determine the setups’ corona inception electric field strengths. The study effectively integrated experimental data from a corona cage with FEM models to assess DC corona properties across different air temperatures thoroughly. The inception voltage levels of corona are significantly influenced by ambient temperature and the space charge generated by corona. The outcomes of the discussion will inform the design of the proposed HVDC transmission line in Southern Africa.https://www.mdpi.com/1996-1073/18/11/2872corona dischargecorona inception voltageelectric fieldspace chargecorona cage |
| spellingShingle | Jules Simplice Djeumen Hendrick Musawenkosi Langa Trudy Sutherland Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions Energies corona discharge corona inception voltage electric field space charge corona cage |
| title | Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions |
| title_full | Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions |
| title_fullStr | Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions |
| title_full_unstemmed | Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions |
| title_short | Corona-Generated Space Charge Characteristic in an Indoor HVDC Corona Cage Under Atmospheric Temperature Conditions |
| title_sort | corona generated space charge characteristic in an indoor hvdc corona cage under atmospheric temperature conditions |
| topic | corona discharge corona inception voltage electric field space charge corona cage |
| url | https://www.mdpi.com/1996-1073/18/11/2872 |
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