A study on advanced operation technique of reactance type Fault locator in AT feeding system

초록

To estimate fault location, reactance type fault locator is adopted in Korean high speed rail. It calculates the magnitude of reactance from substation to the fault location and estimates fault distance using preset values. Therefore for the more accuracy of fault locator, we proposed an advanced operation technique. It modeled AT feeding system precisely using PSCAD/EMTDC program and calculated reactance through fault simulation. And we verified the accuracy of proposed technique compared with the equivalent circuit technique and measurement data extracted field test. As a result, the proposed technique improved the accuracy of fault locator and enhanced the reliability of AT feeding system protection.