| 二次施压对XLPE电缆电树枝生长特性的影响 |
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| 引用本文： | 周湶,陈仕军,廖瑞金,安文斗,叶笛.二次施压对XLPE电缆电树枝生长特性的影响[J].高压电器,2010,46(1). |
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| 作者姓名： | 周湶 陈仕军 廖瑞金 安文斗 叶笛 |
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| 作者单位： | 1. 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆,400044
2. 煤炭科学研究总院重庆研究院,重庆,400037 |
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| 基金项目： | 国家杰出青年科学基金项目(50425722);;煤炭科学研究总院技术创新基金项目 |
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| 摘 要： | 为了研究二次施压下XLPE电缆中电树枝的生长特性,采用短电缆金属针缺陷试验装置,研究XLPE电缆在12 kV作用下生长的电树枝受二次施压(15 kV)作用后新树枝的生长特性。研究结果发现,受二次施压电压和升压速度的影响,XLPE电缆绝缘层中会出现一种奇特的"丛-枝"状电树枝,且二次施压下,生长出的新树枝具有引发时间短、生长速度快、放电通道窄等特点。结果表明,二次施压对XLPE电缆中电树枝的二次引发和生长有较大影响,是加速电缆老化和击穿的重要因素。
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| 关 键 词： | XLPE电缆 电树枝 二次施压 放电通道 生长特性 |
Electrical Trees Growth Characteristic in XLPE Cables under Secondary Voltage |
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| ZHOU Quan,CHEN Shi-jun,UAO Rui-jin,AN Wen-dou,YE Di.Electrical Trees Growth Characteristic in XLPE Cables under Secondary Voltage[J].High Voltage Apparatus,2010,46(1). |
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| Authors: | ZHOU Quan CHEN Shi-jun UAO Rui-jin AN Wen-dou YE Di |
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| Affiliation: | 1.State Key Laboratory of Power Transmission Equipment & System Secunity and New Technology;Chongqing University;Chongqing 400044;China;2.Chongqing Branch of China Coal Research Institute;Chongqing 400037;China |
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| Abstract: | In order to understand the secondary growth characteristic of electrical trees in XLPE cables,we adopted the needle defects testing device to simulate partial discharge(PD) of XLPE cables,and to investigate the growth characteristic of the primary electrical trees under 15 kV secondary voltage.The primary electrical trees were originally formed under 12 kV.The results show that in the insulating layer of the XLPE cable strange bush-branch shape electrical trees appear due to the effects of secondary voltage... |
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| Keywords: | XLPE cable electrical tree secondary voltage discharge channel growth characteristic |
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