| 交联聚乙烯电缆局部放电在线监测系统研制 |
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| 引用本文： | 赵中原,吕征宇,段乃欣,邱毓昌.交联聚乙烯电缆局部放电在线监测系统研制[J].电力系统自动化,2004,28(5):59-62,84. |
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| 作者姓名： | 赵中原 吕征宇 段乃欣 邱毓昌 |
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| 作者单位： | 浙江大学电力电子技术国家专业实验室,浙江省,杭州市,310027;国电西北公司调度处,陕西省,西安市,710004;西安交通大学电气工程学院,陕西省,西安市,710049 |
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| 摘 要： | 监测局部放电是评价电力电缆绝缘状况的重要手段,而目前国内对电力电缆局部放电进行测量所用的系统频率较低,为此文中研究了用宽频带电磁耦合法来检测交联聚乙烯(XLPE)电力电缆的局部放电.它由Rogowski线圈型电流传感器、放大器、滤波器和数字示波器组成,带宽为1 MHz～20 MHz,符合宽频带检测的要求.对不同模拟缺陷和电缆上人为缺陷的检测表明,该方法与IEC 60270的方法相比具有一定的灵敏度,可以有效检测到局部放电信号,并且可以很好地识别出不同典型缺陷的局部放电.
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| 关 键 词： | 交联聚乙烯电力电缆 绝缘监测 局部放电 电磁耦合法 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
RESEARCH AND DEVELOPMENT OF ON-LINE MONITORING SYSTEM WITH PARTIAL DISCHARGE IN XLPE POWER CABLES |
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| Zhao Zhongyuan,Lu Zhengyu,Duan Naixin,Qiu Yuchang.RESEARCH AND DEVELOPMENT OF ON-LINE MONITORING SYSTEM WITH PARTIAL DISCHARGE IN XLPE POWER CABLES[J].Automation of Electric Power Systems,2004,28(5):59-62,84. |
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| Authors: | Zhao Zhongyuan Lu Zhengyu Duan Naixin Qiu Yuchang |
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| Abstract: | Monitoring partial discharge (PD) is an important means to assess the electrical insulation condition ot XLPE, power cables. In China, the frequency of the method used in PD detection of the XLPE power cables is low. Hence an electromagnetic coupling method with wide frequency bandwidth is presented in this paper. The electromagnetic coupling system consists of Rogowski coil, amplifier, filter and digital oscillograph. Detection of several simulated defects and XLPE cables with artificial defects shows that this method provides fairly high sensitivity compared with the IEC 60270 method. This detection system can effectively detect PD signal and recognize different defects. |
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| Keywords: | XLPE power cable insulation-condition monitoring partial discharge electromagnetic coupling method |
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