| 35kV绝缘子雷电冲击下闪络特性实验分析 |
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| 引用本文： | 田洪,陈天翔,孙园,张辑.35kV绝缘子雷电冲击下闪络特性实验分析[J].厦门理工学院学报,2012,20(3):51-56. |
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| 作者姓名： | 田洪 陈天翔 孙园 张辑 |
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| 作者单位： | 厦门理工学院电子与电气工程系,福建厦门,361024 |
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| 基金项目： | 福建省教育厅科技项目(JB11183);厦门市重大科技项目(3502Z20111008) |
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| 摘 要： | 用盐水浓度模拟污秽物导电特性,用400 kV冲击电压发生器对35 kV陶瓷支柱绝缘子和复合支柱绝缘子进行了1000余次雷电冲击电压下的干闪、湿闪和人工污秽试验,对起始闪络电压和伏秒特性曲线的变化规律进行了探索.实验结果表明,陶瓷绝缘子的起始闪络电压比复合绝缘子更容易受到污秽物的影响,但其闪络形成时间受盐水浓度和表面湿度的变化影响不大,而复合绝缘子则会受到较大影响,这在电力系统绝缘配合设计方面需要重视.本文对35 kV陶瓷绝缘子和复合绝缘子在雷电冲击电压下的闪络特性开展了实验研究.
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| 关 键 词： | 陶瓷绝缘子 复合绝缘子 雷电冲击电压 闪络 |
Experimental Study on Flashover Features of 35 kV Insulators Caused by Lightning Surge Voltage |
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| TIAN Hong,CHEN Tian-xiang,SUN Yuan,ZHANG Ji.Experimental Study on Flashover Features of 35 kV Insulators Caused by Lightning Surge Voltage[J].Journal of Xiamen University of Technology,2012,20(3):51-56. |
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| Authors: | TIAN Hong CHEN Tian-xiang SUN Yuan ZHANG Ji |
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| Affiliation: | (Faculty of Electronic and Electrical,Xiamen University of Technology,Xiamen 361024,China) |
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| Abstract: | 400 kV surge voltage simulating lightning strike were applied to a 35 kV porcelain insulator and a 35 kV polymeric insulator.Thousands of flashover tests on condition of dry,wet and artificial polluted surface were conducted,with salt solution at different concentration simulating different conductivity.Test results show that the initial flashover voltage of porcelain insulator is more liable to the conductivity of the pollutions than polymeric insulator,while the voltage-time curve is more invariable than polymeric insulator.This should be carefully treated in power system design regarding insulation cordination. |
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| Keywords: | porcelain insulator polymeric insulator lightning surge voltage flashover |
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