| 采用温差法的10kV交联聚乙烯电缆水树老化评估 |
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| 引用本文： | 杜伯学,马宗乐,高宇,程欣欣,杨林,李宏博.采用温差法的10kV交联聚乙烯电缆水树老化评估[J].高电压技术,2011,37(1):143-149. |
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| 作者姓名： | 杜伯学 马宗乐 高宇 程欣欣 杨林 李宏博 |
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| 作者单位： | 1. 天津大学电气工程与自动化学院电力系统仿真控制教育部重点实验室,天津,300072
2. 石家庄供电公司,石家庄,050051 |
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| 基金项目： | 国家自然科学基金(50777048)~~ |
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| 摘 要： | 交联聚乙烯(XLPE)电力电缆在运行过程中受到电场、温度、水分等因素的共同影响而发生老化,引发事故,给电网的安全运行带来隐患.为此,选取水树老化10 kV XLPE电缆为研究对象,采用温差法研究了温差电流与试样老化时间的关系.实验结果表明,温差电流幅值随着试样老化时间的增加而增大;温差电流与直流电压的幅值正相关;随着电...
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| 关 键 词： | 交联聚乙烯 电力电缆 老化 温差法 内热法 外冷法 空间电荷 评估 |
Insulation Evaluation of Water-tree Aged 10 kV XLPE Cables Using Thermal Step Method |
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| DU Bo-xue
,
MA Zong-le
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GAO Yu
,
CHENG Xin-xin
,
YANG Lin
,
LI Hong-bo.Insulation Evaluation of Water-tree Aged 10 kV XLPE Cables Using Thermal Step Method[J].High Voltage Engineering,2011,37(1):143-149. |
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| Authors: | DU Bo-xue MA Zong-le GAO Yu CHENG Xin-xin YANG Lin LI Hong-bo |
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| Affiliation: | DU Bo-xue1,MA Zong-le1,GAO Yu1,CHENG Xin-xin1,YANG Lin1,LI Hong-bo2(1.Key Laboratory of Power System Simulation and Control of Ministry of Education,School of Electrical Engineering and Automation,Tianjin University,Tianjin 300072,China,2.Shijiazhuang Power Supply Company,Shijiazhuang 050051,China) |
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| Abstract: | A new diagnostic method called thermal step method(TSM) was proposed based on the correlation between degradation of XLPE cable and space charge accumulation.Two variants of the TSM were used: the inner heating technique(IHT) and outer cooling technique(OCT).10 kV XLPE cables were employed as specimens in the experiment,which were aged by accelerated water-tree test(AWTT) in a curved water-filled tube.Then the specimens were tested by the IHT and OCT,so that the correlation between the thermal step current ... |
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| Keywords: | XLPE power cable degradation diagnosis thermal step method inner heating technique(IHT) outer cooling technique(OCT) space charge evaluation |
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