Characteristic band of arcing between pantograph-catenary system in urban rail detection system by UV method

摘要

One of the key steps for arcing detection by UV method is to select characteristic bands reasonably. In this paper, the spectral data of arcing between the pantograph and contact line is obtained by experimental method. It can be seen from the results that although the external factors of each arcing are not exactly the same, the spectral distribution seems similar. The positions of several peaks are basically the same, and the band of 275-285 nm is particularly prominent in the solar-blind area. In the six arcs, the proportion of integral value of radiation intensity is relatively stable, accounting for about 18%. The integral value in the whole arcing increases linearly with the rising intensity of arcing. Therefore, the waveband between 275-285 nm can be determined as the characteristic one for arcing detection system.