Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus
A recurring challenge of a DC SF<inf>6</inf>/N<inf>2</inf>-filled GIS/GIL apparatus is the charge accumulation at DC stress. The conventional design rules and knowledge of AC spacers may not be applicable for this new type of apparatus. A novel design rule is proposed conside...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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China electric power research institute
2024-01-01
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| Series: | CSEE Journal of Power and Energy Systems |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9265438/ |
| _version_ | 1797197380006707200 |
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| author | Hongyang Zhou Guoming Ma Meng Zhang Cong Wang Youping Tu Chengrong Li |
| author_facet | Hongyang Zhou Guoming Ma Meng Zhang Cong Wang Youping Tu Chengrong Li |
| author_sort | Hongyang Zhou |
| collection | DOAJ |
| description | A recurring challenge of a DC SF<inf>6</inf>/N<inf>2</inf>-filled GIS/GIL apparatus is the charge accumulation at DC stress. The conventional design rules and knowledge of AC spacers may not be applicable for this new type of apparatus. A novel design rule is proposed considering the effect of accumulated charge on the threshold of electric field strength being resistant to the superposed voltage. A surface charge accumulation simulation model is introduced, and the key parameters in the simulation model are measured. In addition, an experimental platform for a 100 kV spacer flashover test is established. Spacer flashover tests under superimposed voltage with opposing polarities are carried out, and the withstanding voltage of the spacer is obtained. Finally, based on the proposed model, the threshold of the surface electric field strength (tangential component) on the DC spacer in SF<inf>6</inf>/N<inf>2</inf> mixed gases is discussed. For a reliable insulation design of a DC GIS/GIL apparatus filled with 0.7 MPa SF<inf>6</inf>/N<inf>2</inf>, the threshold of surface electric field strength on the DC spacer is 12 kV/mm. The insulation design rule can be referenced in the design of a high-voltage DC SF<inf>6</inf>/N<inf>2</inf>-filled GIS/GIL apparatus. |
| first_indexed | 2024-04-24T06:43:02Z |
| format | Article |
| id | doaj.art-2febab1dd87f4ede83a196920b390fb6 |
| institution | Directory Open Access Journal |
| issn | 2096-0042 |
| language | English |
| last_indexed | 2024-04-24T06:43:02Z |
| publishDate | 2024-01-01 |
| publisher | China electric power research institute |
| record_format | Article |
| series | CSEE Journal of Power and Energy Systems |
| spelling | doaj.art-2febab1dd87f4ede83a196920b390fb62024-04-22T20:20:29ZengChina electric power research instituteCSEE Journal of Power and Energy Systems2096-00422024-01-0110272773510.17775/CSEEJPES.2020.021009265438Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated ApparatusHongyang Zhou0Guoming Ma1https://orcid.org/0000-0001-5254-3857Meng Zhang2Cong Wang3Youping Tu4Chengrong Li5North China Electric Power University,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing,China,102206North China Electric Power University,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing,China,102206North China Electric Power University,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing,China,102206North China Electric Power University,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing,China,102206North China Electric Power University,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing,China,102206North China Electric Power University,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing,China,102206A recurring challenge of a DC SF<inf>6</inf>/N<inf>2</inf>-filled GIS/GIL apparatus is the charge accumulation at DC stress. The conventional design rules and knowledge of AC spacers may not be applicable for this new type of apparatus. A novel design rule is proposed considering the effect of accumulated charge on the threshold of electric field strength being resistant to the superposed voltage. A surface charge accumulation simulation model is introduced, and the key parameters in the simulation model are measured. In addition, an experimental platform for a 100 kV spacer flashover test is established. Spacer flashover tests under superimposed voltage with opposing polarities are carried out, and the withstanding voltage of the spacer is obtained. Finally, based on the proposed model, the threshold of the surface electric field strength (tangential component) on the DC spacer in SF<inf>6</inf>/N<inf>2</inf> mixed gases is discussed. For a reliable insulation design of a DC GIS/GIL apparatus filled with 0.7 MPa SF<inf>6</inf>/N<inf>2</inf>, the threshold of surface electric field strength on the DC spacer is 12 kV/mm. The insulation design rule can be referenced in the design of a high-voltage DC SF<inf>6</inf>/N<inf>2</inf>-filled GIS/GIL apparatus.https://ieeexplore.ieee.org/document/9265438/Charge accumulationDC spacerflashover voltageSF<inf>6</inf>/N<inf>2</inf>threshold of surface electric field strength |
| spellingShingle | Hongyang Zhou Guoming Ma Meng Zhang Cong Wang Youping Tu Chengrong Li Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus CSEE Journal of Power and Energy Systems Charge accumulation DC spacer flashover voltage SF<inf>6</inf>/N<inf>2</inf> threshold of surface electric field strength |
| title | Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus |
| title_full | Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus |
| title_fullStr | Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus |
| title_full_unstemmed | Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus |
| title_short | Insulation Design Rule for a Spacer in SF<inf>6</inf>/N<inf>2</inf>-filled DC Gas Insulated Apparatus |
| title_sort | insulation design rule for a spacer in sf inf 6 inf n inf 2 inf filled dc gas insulated apparatus |
| topic | Charge accumulation DC spacer flashover voltage SF<inf>6</inf>/N<inf>2</inf> threshold of surface electric field strength |
| url | https://ieeexplore.ieee.org/document/9265438/ |
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