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정상기(Chung Sanggi),박현준(Park Hyun Joon),권삼영(Kown Sam Young),배창한(Bai Chang Han) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
DC traction power system is operated ungrounded to minimize the stray current. This causes rail potential increase and makes hazardous condition to the person in touch with running rails. To prevent the hazardous condition, maximum allowable limits on rail potential rise are set by regulations in advanced foreign countries. In this paper, the simplified calculation methods for the rail potential rise and the stray currents are discussed.
장동욱(Donguk Jang),정상기(Sanggi Chung),이수길(Sugil Lee),송용수(Yongsu Song) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.11
전기철도차량에서 사용하는 전력변환장치에 의해서 부하전류에 다양한 고조파가 포함되고 이러한 고조파는 전력품질에 영향을 미치게 된다. 틸팅열차는 현재 6량 1편성의 시제차량이 개발되어 호남선에서 시험을 실시하고 있다. 본 논문에서는 틸팅열차가 운행되는 동안 차량의 전력시스템을 평가하기 위해서 차량의 전압, 부하전류, 전력, 고조파를 측정한 결과에 대해서 서술하였다.
정호성(Hosung Jung),한문섭(Moonseob Han),박영(Young Park),정상기(Sanggi Chung),권삼영(Samyoung Kwon),이재봉(Jeabong Lee) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.11
DC traction system generates leakage current because running rails are used in return circuit. And it is very important to estimate the leakage current to the train operation situation. Therefore this paper presents dynamic simulation technique that is very similar to the real operation situation using TPS and PSCAD/EMTDC. For this we model DC traction system included in DC substation, variable feeding circuit model and variable train model. And we extract train location and power using TPS program and use these data for dynamic simulation. Finally we can estimate leakage current to the various operation condition using dynamic simulation.
직류 급전시스템에서의 지락고장에 따른 전압상승 시뮬레이션
정호성(Hosung Jung),한문섭(Moonseob Han),박영(Young Park),정상기(Sanggi Chung),권삼영(Samyoung Kwon) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
DC traction system can damage human and other facilities due to the rising of rail potential. Therefore the earth fault detection relay protects system using rail potential induced in train operation and ground fault. However the conventional protection system cannot operate due to the fault resistance and might operate unwanted voltage rising due to the other substation ground fault. So this paper models DC traction system using PSCAD/EMTDC and simulates the rail potential rising. We can estimate the rail potential rising in DC traction system through the various simulation.