집전성능에 따른 차세대고속열차의 전력품질 분석

The quality of electric power supplied to high-speed trains" electronics becomes very important because the performance on current collection is known to be important generally to obtain good power quality. In this paper, the effect of high-speed trains" current collection performance on the power quality of vehicles is analyzed and the correlation is proposed for next-generation high-speed train (HEMU-430X). For the quantitative analysis of power quality, the analysis of total harmonic distortion (THD) rate and equivalent disturbing(ED) value for trolley voltage were utilized. Through the study, the following results were obtained. As train speed was increasing, the standard deviation of contact force increased, power quality became unstable. It was confirmed to have similar trends if catenary tension was low or in tunnels. However, in catenary tension up period and open section area, as the standard deviation of contract force becomes stable, power quality was stable. As a result, power quality"s relationship depending on the current collection performance was verified.