Experimental research on radiated electroma gnetic noise of pantograph arc

Zhiyong Wang, Fengyi Guo, Xili Wang, Yanli Zhang, Baowei Wang, Xiaoming Yan
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引用次数: 10

Abstract

In recent years, with the continuous increasing of electric locomotive running speed, electromagnetic noise of pantograph arc gets more and more serious and has become a kind of security risk of electric railway's operation. To study the electromagnetic noise and suppression methods of pantograph arc, an electromagnetic noise experimental system was developed. The experimental system is composed of an echoic chamber, pantograph arc generator and pantograph arc detection system. With the experimental system, 64 groups of radiation electromagnetic noise experiments were conducted under different contact force, contact current and sliding speed conditions. The experimental materials are metal impregnation carbon slide and Cu contact wire respectively. The radiated electromagnetic noise of pantograph arc is mainly electric field noise. Most of the electric field noise is distributed in the frequency ranges from 30MHz to 500MHz. And the maximum interference is between 30MHz and 80 MHz. With the increase of contact current, the distribution of the electric field noise becomes denser and the disturbance level increases. With the increase of contact pressure or sliding speed, the distribution of the electric field noise firstly becomes thinner and then denser.
受电弓电弧辐射电磁噪声的实验研究
近年来,随着电力机车运行速度的不断提高,受电弓电弧电磁噪声日益严重,已成为电力铁路运行的一种安全隐患。为研究受电弓电弧的电磁噪声及抑制方法,研制了受电弓电弧电磁噪声实验系统。实验系统由回波室、受电弓电弧发生器和受电弓电弧检测系统组成。利用实验系统进行了64组不同接触力、接触电流和滑动速度条件下的辐射电磁噪声实验。实验材料分别为金属浸渍碳滑块和铜接触丝。受电弓电弧的辐射电磁噪声主要是电场噪声。电场噪声大部分分布在30MHz ~ 500MHz的频率范围内。最大干扰在30MHz ~ 80mhz之间。随着接触电流的增大,电场噪声的分布更加密集,干扰程度增大。随着接触压力或滑动速度的增大,电场噪声的分布先变薄后变密。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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