武广高速铁路轨旁电磁干扰实测及分析

研究了GB/T 24338-2标准中关于分辨率带宽(RBW)的规定。通过实验对比了标准推荐的RBW及实地测试使用的RBW的测试效果,结果证明两者测量干扰峰值效果相同,但后者扫描速度更快,更适宜测试现今高速铁路的电磁干扰。并在武广高速铁路咸宁段电分相处实地测试运行中的CRH3型高速列车的弓网离线电弧电磁干扰,获得其在30 MHz~1 GHz的频谱。通过频谱分析了高速列车弓网离线电弧电磁干扰的幅频特性,为评估弓网离线电弧电磁干扰对高速列车的影响提供依据。

Measurement and Analysis of Wayside EMI on Wuhan- Guangzhou High-speed Electrical Railway

This paper studies the provisions about resolution bandwidth( RBW) stipulated in GB /T24338- 2. The comparison between the effect of RBW recommended by the standard and the effect obtained proves that both test effects are the same as far as the peak value of interference is concerned.But the latter one has a faster scan speed,is more suitable to test the EMI of current high-speed railways.The field test is conducted on the phase-break section of Wuhan- Guangzhou high-speed railway to get the EMI of offline catenary arc on the running CHR3 high speed train and obtain the spectrum of the EMI from 30 MHz to 1 GHz. The amplitude-frequency characteristics of offline catenary arc EMI on the running high-speed train is analyzed through spectrum to provide the basis for assessing the interference of the offline pantograph arc EMI on high-speed trains.