PROTECTIVE COOPERATION ANALYZING METHOD FOR DC ELECTRIC RAIL ROAD SUBSTATION

摘要

PROBLEM TO BE SOLVED: To display the load characteristic curve indicating the actual load fluctuation on the real-time basis, set the optimum protective cooperation curve, and design various apparatuses without futility. ;SOLUTION: The load power is measured for a prescribed time when an electric car travels, the total time is added for each prescribed measured value, it is displayed by a bar graph, and the load characteristic curve is obtained from the whole change state of the bar graph. The load characteristic curve is compared with the yield curve indicating the capability of a substation facility apparatus, and the protective cooperation curve is set.;COPYRIGHT: (C)1997,JPO