Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2004.06a
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- Pages.1280-1285
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- 2004
A New Protection Algorithm for DC Railway Systems
새로운 직류급전계통 보호 알고리즘
Abstract
ADC railway system has low feeder voltage, The fault current can be smaller than the current of load starting. So it is important to discriminate between the small fault current and the load starting current. The load starting current increases step by step but the fault current increases all at once. As for the load starting current, the time constant of load current at each step is much smaller than that of the fault current. First, to detect faults in DC railway systems, an algorithm using the time constant calculated by the method of least squares is presented in this paper.
Keywords