UV imaging detection on transmission line of different defect types

被引：0
|
作者：
Zhang, Zhijin [1 ]
Zhang, Wei [1 ]
Li, Zhenyu [1 ]
Xiao, Yao [2 ]
Deng, Jun [2 ]
Xia, Gulin [2 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Shapingba District, Chongqing
[2] Test Center of China Southern Power Grid EHV Transmission Company, Guangzhou, 448000, Guangdong Province
来源：
Dianwang Jishu/Power System Technology | 2015年 / 39卷 / 09期
关键词：
Corona discharge; Different defects; Transmission line; Ultraviolet imager;
D O I：
10.13335/j.1000-3673.pst.2015.09.041
中图分类号：
学科分类号：
摘要：
The transmission line plays an important role in the power delivery. Some faults of transmission lines are found in the practical operation, such as burr, protuberance on the conductive surface and broken strands. There will be corona discharge at the location of the defect conductor. The corona discharge will cause the waste of power energy, radio interference and audible noise. These defects are great threats to the safety and stability of power system. Using appropriate method to detect the operational state of transmission line is always significantly concerned by operation department. In this paper, the burr, protuberance and broken strands defects are manually simulated while the photon numbers of corona discharge under different defects are measured by the ultraviolet imager. The corona discharge characteristics of transmission line under different defect types are analyzed based on the measured photon numbers. Result shows that: the photon number increases with the rising of the applied voltage. The discharge inception voltage decreases with the rising of the defect degree. By applying same voltage, the detected photon number varies with different kinds of defects. Under the operation condition simulated in this paper, ultraviolet imager can effectively detect wire burrs and broken strands defects. The ultraviolet imager shows excellent performance in the detection of conductor defects and thus it can be prospectively used in the operation state detection of transmission lines. ©, 2015, Power System Technology Press. All right reserved.
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页码：2647 / 2652
页数：5
相关论文
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