SYSTEM FOR CONTROLLING DIGITAL PROTECTION RELAY UNIT

摘要

PURPOSE: A system for controlling a digital protection relay unit is provided to secure the reliability of a power grid system by enabling the double operation time of an auxiliary relay to generate a trip signal delay. CONSTITUTION: A receiving unit(110) receives the input signal of a digital high speed output expansion relay. A selection instruction unit(120) performs according to a selection instruction. A select instruction correction unit(130) corrects a predetermined instruction selection signal. A trip signal output unit(140) outputs a trip signal through an output contact point.