APPARATUS AND METHOD FOR HIGH SPEED FAULT DISTINCTION AND FAULT LOCATION ESTIMATION USING THE DATABASE BASED ON INDUCTIVE ANALYSIS IN HIGH SPEED AC RAILWAY FEEDING SYSTEM

摘要

The present invention relates to an apparatus and a method for fault distinction with which fault distinction calculation using only the current measuring equipment installed in a substation, parallel division, and a feeding division included in an electric railway power supply system can be accurately performed and expedited. The fault distinction apparatus according to the present invention includes a sensor unit outputting current data by sensing current the electric line and feeder line of up and down lines; a data storage unit storing equations for fault point determination and fault distinction calculation; a fault determination unit determining whether the fault point is a substation-parallel division section or a parallel division-feeding division section by means of the current data value output from the sensor unit and substitution in the equation for fault point determination; a fault distinction unit calculating the fault point as the distance ratio to the substation-fault with respect to the substation-parallel division distance or the distance ratio to the parallel division-fault with respect to the parallel division-feeding division distance by means of the current data value output from the sensor unit and substitution in the equation for fault point calculation; and a breaker control unit outputting a control signal to the breaker so that the lane determined to be faulty based on the distance ratio by the fault distinction unit is isolated.