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 sta ... 전체 초록 보기