Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal
In this study, a simulation model of surface charge accumulation has been established. The model considers three accumulation ways, i.e. electrical conduction within the gas, through insulator volume and along the insulator surface. The generation, diffusion, drift and recombination of charge carrie...
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doaj-dd5a7d2cf2f9439aa8bafdfb46c8c1e42021-04-02T13:26:59ZengWileyHigh Voltage2397-72642020-02-0110.1049/hve.2019.0217HVE.2019.0217Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversalYi Luo0Ju Tang1Ju Tang2Cheng Pan3Zijun Pan4Yi Li5Zhaolun Cui6Zhaolun Cui7School of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversitySchool of Electrical Engineering and Automation, Wuhan UniversityIn this study, a simulation model of surface charge accumulation has been established. The model considers three accumulation ways, i.e. electrical conduction within the gas, through insulator volume and along the insulator surface. The generation, diffusion, drift and recombination of charge carriers are also taken into account. Based on it, the influence of polarity reversal, reversal time on surface charge and electric field distribution on a basin-type insulator are studied. The polarity of the surface charges and the direction of the electric field change after the voltage polarity reversal. When the preload voltage is equal to reversal voltage, the surface charge and the electric field distributions at steady state before and after voltage polarity reversal are all the same with opposite sign, and not affected by the reversal time. However, the time to reach the steady state varies with different reversal time. The steady-state surface charge and electric field increased with the rise of reversal voltage. The transient normal and tangential electric field would not exceed the value of the steady state, which means voltage polarity reversal has no additional influence on insulation performance. This research can provide guidance to the design and manufacture of DC GIS/GIL.https://digital-library.theiet.org/content/journals/10.1049/hve.2019.0217electrical conductivitysurface chargingelectric fieldsgas insulated switchgeargas insulated transmission linesinsulatorsbasin-type insulatorvoltage polarity reversalsurface charge accumulationelectrical conductioninsulator surfacecharge carrierselectric field distributionelectric field changereversal voltagesteady statedifferent reversal timesteady-state surface chargetangential electric field |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yi Luo Ju Tang Ju Tang Cheng Pan Zijun Pan Yi Li Zhaolun Cui Zhaolun Cui |
spellingShingle |
Yi Luo Ju Tang Ju Tang Cheng Pan Zijun Pan Yi Li Zhaolun Cui Zhaolun Cui Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal High Voltage electrical conductivity surface charging electric fields gas insulated switchgear gas insulated transmission lines insulators basin-type insulator voltage polarity reversal surface charge accumulation electrical conduction insulator surface charge carriers electric field distribution electric field change reversal voltage steady state different reversal time steady-state surface charge tangential electric field |
author_facet |
Yi Luo Ju Tang Ju Tang Cheng Pan Zijun Pan Yi Li Zhaolun Cui Zhaolun Cui |
author_sort |
Yi Luo |
title |
Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal |
title_short |
Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal |
title_full |
Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal |
title_fullStr |
Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal |
title_full_unstemmed |
Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal |
title_sort |
dynamics of surface charge and electric field distributions on basin-type insulator in gis/gil due to voltage polarity reversal |
publisher |
Wiley |
series |
High Voltage |
issn |
2397-7264 |
publishDate |
2020-02-01 |
description |
In this study, a simulation model of surface charge accumulation has been established. The model considers three accumulation ways, i.e. electrical conduction within the gas, through insulator volume and along the insulator surface. The generation, diffusion, drift and recombination of charge carriers are also taken into account. Based on it, the influence of polarity reversal, reversal time on surface charge and electric field distribution on a basin-type insulator are studied. The polarity of the surface charges and the direction of the electric field change after the voltage polarity reversal. When the preload voltage is equal to reversal voltage, the surface charge and the electric field distributions at steady state before and after voltage polarity reversal are all the same with opposite sign, and not affected by the reversal time. However, the time to reach the steady state varies with different reversal time. The steady-state surface charge and electric field increased with the rise of reversal voltage. The transient normal and tangential electric field would not exceed the value of the steady state, which means voltage polarity reversal has no additional influence on insulation performance. This research can provide guidance to the design and manufacture of DC GIS/GIL. |
topic |
electrical conductivity surface charging electric fields gas insulated switchgear gas insulated transmission lines insulators basin-type insulator voltage polarity reversal surface charge accumulation electrical conduction insulator surface charge carriers electric field distribution electric field change reversal voltage steady state different reversal time steady-state surface charge tangential electric field |
url |
https://digital-library.theiet.org/content/journals/10.1049/hve.2019.0217 |
work_keys_str_mv |
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