Traction power system supplies of railway

A traction power system for railway is provided to safely perform the system operation by connecting an electric power system related to an upward path with and electric power system related to a downward path by a circuit breaker. The traction power system for railway comprises the upward path and downward path, and the rail(100a) and administration means. The administration means comprises the parallel breaker. The parallel breaker connects the electric power system related to the upward path and the electric power system related to the downward path in the shear of each autotransformer. The administration means operates in the open of the parallel breaker to the secondary sectioning post(SSP). The administration means operates in the short circuit of the parallel breaker to the parallel feed minor.