Characteristics of Radio Frequency Interference from Pantograph Arcing in Car of Traction Stock
In electric railway system, the main radio frequency interference (RFI) effects arise from the highvoltage spark breakdown when the pantograph is raised or lowered and high current arcing during operation. The paper focuses on the characteristics of RFI effects in car of traction stock. Through the experiment in a test line, the pulses of spark breakdown are recorded with high analog bandwidth oscilloscope and analyzed with Fast Fourier Transform (FFT). The analysis shows that the interference spectrum is very wide and the frequencies of main interference energy are below 600MHz. Furthermore, a time-domain technology is introduced for the measurement of car quality factor (Q) which is used to evaluate resonance effects of car. The technology provides an estimate of average Q by calculating the decay time of the spectrum components of the pulse response. The analysis manifests that the car has little effect on the characteristics of the pulse of spark break.
Pantograph Spark RFI Quality Factor
Wang Guodong
EMC Lab., School of Elec.and Infor.Eng.Beijing Jiao Tong University Beijing, China
国际会议
北京
英文
214-217
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）