LIU Bao-xuan, CHEN Tang-long, PU Wen-xu, et al. Analysis on arc current based on pantograph-catenary arc detection system[J]. 2014, 33(3): 15-18+22. DOI: 10.13873/j.1000-97872014.03.012.
基于弓网电弧检测系统的电弧电流分析
摘要
基于弓网放电机理
提取电弧发生时刻放电特征量—(250±10)nm波段的紫外光
作为在线检测目标
研制出了一种非接触式紫外弓网电弧检测系统。利用该检测系统对广州地铁二号线弓网电弧现象
进行现场检测
利用经验模态分解(EMD)方法筛除电弧电流的趋势信号
对处理后的电流信号进行分析
结果表明:电弧的发生导致牵引电流中0
5
0 Hz谐波幅值明显增加。
Abstract
Based on discharge mechanism of the pantograph and catenary
extract the characteristic quantity—( 250 ±10) nm wave band ultraviolet light of arcing discharge occurring
as online testing goals
and develops a kind of non-contact UV detection system for pantograph-catenary arcing.Detect the arc phenomenon for Guangzhou Metro Line 2 by this detection system
screen the tendentious signal of current by the way of empirical mode decomposition method and analyze the processed current signal
results show that the arcing causes the 0
50 Hz harmonic amplitude in traction current increased significantly.
The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis [J] . Huang Norden E.,Shen Zheng,Long Steven R.,Wu Manli C.,Shih Hsing H.,Zheng Quanan,Yen Nai-Chyuan,Tung Chi Chao,Liu Henry H.. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences . 1998 (1971)