Electromagnetic Radiation Characteristics of Potential Transfer Arc During Live Working on 1 000 kV AC Transmission Line Tension Tower

被引：0
|
作者：
Li P. [1 ,2 ]
Xiong S. [1 ,2 ]
Li W. [3 ]
Wu T. [1 ,2 ]
Pu Z. [1 ,2 ]
Peng Y. [4 ]
机构：
[1] College of Electrical Engineering & New Energy, China Three Gorges University, Yichang
[2] Hubei Provincial Engineering Technology Research Center for Power Transmission Line, China Three Gorges University, Yichang
[3] Jingzhou Power Supply Company, Grid Hubei Electric Power Co., Ltd., Jingzhou
[4] State Key Laboratory of Power Grid Environmental Protection, China Electric Power Research Institute, Wuhan
来源：
Gaodianya Jishu/High Voltage Engineering | 2022年 / 48卷 / 11期
基金：
中国国家自然科学基金;
关键词：
electromagnetic radiation characteristic; live working; potential transfer current; spectral characteristic; transmission line;
D O I：
10.13336/j.1003-6520.hve.20211002
中图分类号：
学科分类号：
摘要：
There will be obvious intermittent arc discharge (potential transfer arc) in the process of equipotential live working of UHV transmission lines. The electromagnetic radiation generated by the arc may affect the normal and stable operation of the surrounding intelligent equipment. Therefore, it is of great significance to study the electromagnetic radiation characteristics of potential transfer arc. Based on the measured waveform of potential transfer current in live working of 1 000 kV AC transmission line tension tower, the frequency spectrum of potential transfer current is analyzed by Hilbert transform, and the frequency band distribution of potential transfer current is obtained. According to the antenna theory, the simulation model of electromagnetic radiation characteristics of potential transfer arc in live working is established. The radiation electromagnetic field of transfer arc is calculated, and the radiated electromagnetic field distribution of the transfer arc is obtained. The results show that the potential transfer arc current presents high-frequency oscillation with a peak value of about 1 000 A, and the main frequency is distributed in 13~20 MHz. The peak of the radiated electric field intensity generated by the transfer arc is much greater than the magnetic field intensity, both of which decay rapidly with the increase of distance, and are more concentrated near the metal conductor. When the frequency is 16.5 MHz, the maximum electric field and magnetic field intensity near the tower are about 1.5 kV/m and 1.9 A/m, respectively. © 2022 Science Press. All rights reserved.
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页码：4628 / 4637
页数：9
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