A study on results of TPS according to the optimum traction power supply system of Urban MAGLEV railway No . 66
The main purpose of this study is to conduct correlation factor analysis in both headway time and power capacity by means of analytical approach to results of power property in terms of headway time of Urban MAGLEV from the standpoint of headway time of Urban MAGLEV on the Incheon international airport maglev railway, in the process of construction at the moment, in Korea. Railroad track, as a fundamental condition of service simulation, is set up with double track, and it is therefore that the three patterns of headway time of Urban MAGLEV on the track. TPS is performed by Urban MAGLEV operation consisted of three separated patterns in headway time on the double railroad track or the trial track. As a result of such simulation, three types of characteristics listed below were obtained. 1) The peak power capacity related to transportation demand on the trial track compared to the result given. 2) The optimum capacity of substation is determined based on the analysis. 3) The location of substations is determined based on the analysis. The result of research performance, therefore, enables us to reflect the power supply system design for the stabilized and economized Urban MAGLEV operation
A review of simulation models for railway systems
The objective of this paper is to review the development of a number of approaches to computer simulation models of railway systems. Attention is, in particular, given to models of train movement, power supply systems and traction drives. These models have been successfully used to enable various 'what-if' issues to be resolved effectively in a wide range of applications, such as speed profiles, energy consumption, run times etc.
Quick evaluation of voltage surge in electrical power systems
The lattice diagram has been widely recognized and adopted to analyze the voltage surges produced at a particular location in an electrical system. These transient surges are caused by traveling waves induced by lightning strikes or switching operations. The lattice diagram can be used effectively, but the required computations are tedious. A simplified approach for computing induced voltage surges based on mathematical derivation is presented. This method permits a quick evaluation of both an initial and crest surge magnitude and wave shape based on a given incoming surge and the surge impedances of the electrical elements involved. Sample calculations from the lattice diagram and the proposed quick evaluation are compared.<<ETX>>