전기철도 AT급전계통 전력해석을 통한 실계통의 단락전류 분석

초록

In this paper, we perform a modeling for the AT Feeder system in AC electric railway and we utilize thepower EMTDC program to implement about AT feeder system modeling. In addition, we study the impedancecharacteristics of the AT feeder system and calculated fault current and impedance according to the distance due to faultaccident. Based on it’s result, fault current are compared between calculating the value and simulation value in EMTDC modeling. Impedance of power system is Largest at the middle point of the system and is smallest near autotransformer, and thenshowed that the fault current is inversely proportional to impedance characteristics.

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