• 한국철도학회논문집
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• 제18권6호
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• pp.533-542
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• 2015

본 논문은 도시철도 전동차 정차 시에 발생하는 회생전력으로 인해 전차선 가선전압 상승 시에 Converter(Forward)에서 Inverter(Reverse)로 mode 변환하여 상승된 가선전압을 AC 모선으로 환류하여 전차선 전압을 일정하게 유지하고 전동차 정차 시에 발생하는 회생전력을 재사용할 수 있는 부산도시철도의 더블 컨버터 직류 변전설비를 제안하며 전차선 직류전압 품질향상을 위해 부산도시철도 더블 컨버터 직류 변전설비에서 발생하는 Converter/Inverter mode 변환 시의 undershoot와 overshoot를 최소화할 수 있는 최적의 사이리스터 점호각을 시뮬레이션을 통하여 제시하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.499-504
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• 2008

DC substation of urban transit supplies a suitable DC power on electricity vehicles by being supplied from KEPCO. DC substation is verified electrical safety of system through pre-operation inspection on electrical installations to be supplied power from KEPCO. However, because test items and method for DC traction system are unprepared on pre-operation inspection, the general safety and performance verification of DC traction system are very insufficient. Therefore this paper analyze the overseas test examples such as factory equipment tests, factory combined tests and railway tests for the safety and performance verification of DC traction system and present a suitable test items and test standard in domestic.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2001년도 추계학술대회 논문집
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• pp.343-349
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• 2001

In this study we examined the method to estimate numerically the amount of the regenerated power and the excess regenerated power produced in the DC electric power supply system for the urban light rail transit system. And their economic feasibilities are also studied. For this study DC electric power supply system is simulated and the numerical analysis of the regenerated power and the excess regenerated power are conducted. The study result on the sample system shows that the facility to consume the excess regenerated power or the inverting equipment to reuse the excess regenerated power in the electric substation is feasible economically.