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한문섭(Moon-Seob Han),신효범(Hyo-Bum Shin),창상훈(Sang-Hoon Chang),김주락(Joo-Rak Kim),장동욱(Dong-Uk Jang) 대한전기학회 2012 대한전기학회 학술대회 논문집 Vol.2012 No.5
AC power supply system supplies power to railroad sections. In order to prevent collision of disordered power suppliers, neutral sections are constructed near the substations and sectioning posts. For these reasons, the study on automatic changeover system is in process. Also in order to verify the theory, field experiments on system constructed at Yongpo-ri SSP?which is included in Dae-bule pilot model railroad?is on the stage. In this paper, power transfer experiment results, which conducted by passing practical rolling stock(EL-8200s) through the neutral section where the power supplier is adopted, are presented. In order to measure the inrush current and abnormal phenomenon, the power transfer experiment had conducted with VCB switches and thyristor switches. Also in order to analyze the undergoing phenomenon affected by traction driving.
절연구간 자동절체 통과 현상 규명용 모의시뮬레이터 제작 (Simulator of Automatic Power Switching System)
한문섭(Han Moon-Seob),신효범(Shin Hyo-Bum),장동욱(Jang Dong-Uk) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
On AC railway systems, the neutral sections are installed in front of substations and sectioning posts in order to avoid crash between power that have differing phases. In case railway vehicles pass through these neutral sections, it is necessary for them to switch to coasting driving by notch-off. This may reduce speed of the vehicles, resulting lowered train operation efficiency. The usage of automatic power switching systems makes it possible to pass neutral sections at notch-on, enhancing operation efficiency so that it is appropriate for high-speed railway applications. This paper introduces a simulator that assesses efficiency of automatic power switching systems in neutral sections. The is composed of a power supply system, electric railway vehicles, thyristor switches, and traction motors.
급전선로에 설치되어 있는 피뢰기의 누설전류 측정과 관리방안
한주섭(Han Ju-Seop),서황동(Seo Hwang-Dong),길경석(Kil Gyung-Suk),한문섭(Han Moon-Seob),장동욱(Jang Dong-Uk) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper describes the measurement result of leakage current flowing arresters connected in feeder lines to propose an optimal management method. Twenty seven arresters set in seven areas were analyzed on a regular basis for 4 months. The results showed that the RMS and the peak value of the total leakage currents for soundness arresters were a range of ... respectively. During the period of measurement, the magnitude of the leakage current didn"t show conspicious changes and there were impossible places to analyze arrester"s status due to including high THD rate in a feeder line. From the study, leakage current measurement has to be performed at a condition without running an electric train in the line, and the allowable RMS value of soundness arrester is bellow 600uA.
에너지 효율적인 속도 프로파일 생성을 위한 Simulink 기반 열차 성능 시뮬레이션
강문호(Moon-Ho Kang),한문섭(Moon-Seob Han) 대한전기학회 2010 전기학회논문지 Vol.59 No.10
In this research TPS (Train Performance Simulation) blocks are designed using Simulink and applied to generate speed profiles for energy-efficient train operation. With a train operation mode of maximum powering, coasting, and maximum breaking, a breaking point is calculated from forward-backward running profiles. Then, GA (Genetic Algorithm) is used to solve a running time constraint, and a coasting point is produced from the searching process of GA. With the breaking point and the coasting point a speed profile is plotted. Train performance under a speed limit and gradient variations is simulated and resultant speed profiles are analyzed.
강문호(Kang Moon-Ho),한문섭(Han Moon-Seob) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.10
This paper proposes an optimal algorithm for generating a train speed profile giving optimal energy efficiency based on GA(Generic Algorithm) and shows its effectiveness with simulations. After simplifying the train operation mode to a maximum traction, a coasting and a maximum breaking, adjusting the coasting point to minimize the train consuming energy is the basic scheme. After figuring out consumed energies according to the multiple coasting points, an optimal train speed profile with a coasting point giving the smallest consumed energy has been selected.