| 基于运行电压下泄漏电流的交流污闪电压预测(英文) |
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| 引用本文： | 梅红伟,王黎明,关志成,毛颖科.基于运行电压下泄漏电流的交流污闪电压预测(英文)[J].高电压技术,2012(8):1924-1929. |
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| 作者姓名： | 梅红伟 王黎明 关志成 毛颖科 |
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| 作者单位： | Graduate School at Shenzhen,Tsinghua University;Shanghai Extra High Voltage Power Transmission Company |
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| 基金项目： | supported by National Basic Research Program of China(973 Program)(2009CB724503) |
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| 摘 要： | This paper presented a model to predict the AC flashover voltage of contaminated suspension insulators.The prediction method is based on the maximum leakage current under AC operating voltage.Three kinds of widely used suspension insulators were tested in various contamination states such as pollution layers with different equivalent salt deposit density(ESDD),different composition of the conductive components,different non-soluble deposit density(NSDD) and different pollution distribution states to simulate the contamination states in nature.The effective ESDD was proposed and calculated.Influences of contamination states to maximum leakage current and flashover voltage were studied.Then,the relationships between flashover voltage and leakage current in these states were presented.Finally,considering the difference of insulator profiles,a new parameter is defined and a model to estimate the flashover voltage based on this parameter is developed.The model could be used in all kinds of suspension insulators in different contamination states and was validated by the test results.
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| 关 键 词： | flashover voltage suspension insulators leakage current pollution layers equivalent salt deposit density(ESDD) non-soluble deposit density(NSDD) |
Prediction of Pollution Flashover Voltage Based on Leakage Current Under AC Operating Voltage |
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| MEI Hongwei,WANG Liming,GUAN Zhicheng,MAO Yingke.Prediction of Pollution Flashover Voltage Based on Leakage Current Under AC Operating Voltage[J].High Voltage Engineering,2012(8):1924-1929. |
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| Authors: | MEI Hongwei WANG Liming GUAN Zhicheng MAO Yingke |
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| Affiliation: | 1.Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China;2.Shanghai Extra High Voltage Power Transmission Company,Shanghai 200063,China) |
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| Abstract: | This paper presented a model to predict the AC flashover voltage of contaminated suspension insulators.The prediction method is based on the maximum leakage current under AC operating voltage.Three kinds of widely used suspension insulators were tested in various contamination states such as pollution layers with different equivalent salt deposit density(ESDD),different composition of the conductive components,different non-soluble deposit density(NSDD) and different pollution distribution states to simulate the contamination states in nature.The effective ESDD was proposed and calculated.Influences of contamination states to maximum leakage current and flashover voltage were studied.Then,the relationships between flashover voltage and leakage current in these states were presented.Finally,considering the difference of insulator profiles,a new parameter is defined and a model to estimate the flashover voltage based on this parameter is developed.The model could be used in all kinds of suspension insulators in different contamination states and was validated by the test results. |
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| Keywords: | flashover voltage suspension insulators leakage current pollution layers equivalent salt deposit density(ESDD) non-soluble deposit density(NSDD) |
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