Designing epoxy insulators in SF6-filled DC-GIL with simulations of ionic conduction and surface charging.
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| Title: | Designing epoxy insulators in SF6-filled DC-GIL with simulations of ionic conduction and surface charging. |
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| Authors: | Ma, Guo-ming1, Zhou, Hong-yang1, Li, Cheng-rong1, Jiang, Jun1, Chen, Xue-wei1 |
| Source: | IEEE Transactions on Dielectrics & Electrical Insulation. Dec2015, Vol. 22 Issue 6, p3312-3320. 9p. |
| Subjects: | Epoxy insulators, Computer simulation, Ionic conductivity, Surface charging, Electric lines, Charge density waves, Charge carrier mobility |
| Abstract: | The problem of surface charge accumulation on gas-insulator interface is one of the critical factors for the development of DC Gas Insulated transmission Lines (GIL). In order to solve this problem, researchers have proposed a variety of mathematical models in which the volume conductivity of SF6 was assumed to be constant for calculating the distribution of surface charge. However, the conductivity of SF6 was inconstant, affected by electric field strength. In this paper, a gas model is developed, taking into account the generation, recombination and motion of charge carriers in SF6 of DC-GIL. The surface charge density and the electric field distribution on the insulator surface under DC voltage were simulated. Afterwards, the electric conduction through the volume of the insulator was proved to be the dominating accumulation mechanism. In order to improve the insulation performance, the influence of practical insulator shape on the electric field distribution in DC-GIL was studied. Three different shapes of insulator which were disc insulator, conical insulator and obtuse conical insulator were introduced and compared. The simulation results indicate the obtuse conical insulator was the most suitable configuration for DC-GIL. [ABSTRACT FROM AUTHOR] |
| Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 112245891 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Designing epoxy insulators in SF6-filled DC-GIL with simulations of ionic conduction and surface charging. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ma%2C+Guo-ming%22">Ma, Guo-ming</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Hong-yang%22">Zhou, Hong-yang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Cheng-rong%22">Li, Cheng-rong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Jun%22">Jiang, Jun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Xue-wei%22">Chen, Xue-wei</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Dielectrics+%26+Electrical+Insulation%22">IEEE Transactions on Dielectrics & Electrical Insulation</searchLink>. Dec2015, Vol. 22 Issue 6, p3312-3320. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Epoxy+insulators%22">Epoxy insulators</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+conductivity%22">Ionic conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+charging%22">Surface charging</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+lines%22">Electric lines</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+density+waves%22">Charge density waves</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+carrier+mobility%22">Charge carrier mobility</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The problem of surface charge accumulation on gas-insulator interface is one of the critical factors for the development of DC Gas Insulated transmission Lines (GIL). In order to solve this problem, researchers have proposed a variety of mathematical models in which the volume conductivity of SF6 was assumed to be constant for calculating the distribution of surface charge. However, the conductivity of SF6 was inconstant, affected by electric field strength. In this paper, a gas model is developed, taking into account the generation, recombination and motion of charge carriers in SF6 of DC-GIL. The surface charge density and the electric field distribution on the insulator surface under DC voltage were simulated. Afterwards, the electric conduction through the volume of the insulator was proved to be the dominating accumulation mechanism. In order to improve the insulation performance, the influence of practical insulator shape on the electric field distribution in DC-GIL was studied. Three different shapes of insulator which were disc insulator, conical insulator and obtuse conical insulator were introduced and compared. The simulation results indicate the obtuse conical insulator was the most suitable configuration for DC-GIL. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of IEEE Transactions on Dielectrics & Electrical Insulation is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1109/TDEI.2015.005031 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 3312 Subjects: – SubjectFull: Epoxy insulators Type: general – SubjectFull: Computer simulation Type: general – SubjectFull: Ionic conductivity Type: general – SubjectFull: Surface charging Type: general – SubjectFull: Electric lines Type: general – SubjectFull: Charge density waves Type: general – SubjectFull: Charge carrier mobility Type: general Titles: – TitleFull: Designing epoxy insulators in SF6-filled DC-GIL with simulations of ionic conduction and surface charging. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ma, Guo-ming – PersonEntity: Name: NameFull: Zhou, Hong-yang – PersonEntity: Name: NameFull: Li, Cheng-rong – PersonEntity: Name: NameFull: Jiang, Jun – PersonEntity: Name: NameFull: Chen, Xue-wei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 10709878 Numbering: – Type: volume Value: 22 – Type: issue Value: 6 Titles: – TitleFull: IEEE Transactions on Dielectrics & Electrical Insulation Type: main |
| ResultId | 1 |
