SYSTEM FOR CALCULATING RATIO OF POWER COLLECTION BETWEEN ELECTRIC RAILWAY VEHICLE AND CATENARY USING MEASURING OF POINT OF INFLECTION

摘要

The present invention relates to a system for calculating a power collection ratio between an electric railway vehicle and a catenary by measuring an inflection point, and is to provide a system for collecting the power collection ratio between an electric railway vehicle and a catenary by measuring the inflection point according to analysis of a waveform of current when an electric railway vehicle is operated on a catenary by electric energy supplied from a catenary. The system comprises: a current measuring unit which measures the current of a catenary; an arc determining unit which analyzes the waveform of current of the catenary measured through the current measuring unit, and determines an arc according to its current state; an inflection point extracting unit which extracts an inflection point at which current starts falling, in a section of determining that the arc occurs through the arc determining unit; and a power collection ratio calculating unit which extracts the total contact loss arc occurrence time on the basis of the inflection point information extracted in the section of determining that the arc occurs, and calculates a power collection ratio as the ratio of the extracted total contact loss arc occurrence time and the total current measurement time.