With the progress of power electronic devices in electric railway, harmonics in power systems become increasingly of concern. This paper presents a case study on harmonics in a traction power supply system. The study was based on measurements realized in an electrical drive station using a data acquisition system and a computer. It was analyzed the main power quality indicators: the power facto...

It was made clear that many railway customers thought the major important factors which influence comfort of stations were “odors” and “clearness of air”. We also found that there was a high correlation between the evaluation of customers about odors and the amount of fungi floating in the air at several points of stations. So we consider that microbial volatile organic compounds (MVOCs) genera...

There are few information at French railway station. People have to take attention to the visual sign to get the information of train departure time, corridor number, change the train etc. However, some stations of SNCF, which is the national railway company, are very large and have many lines, for instance, TGV, domestic, international line, so that it takes long time to find the right way to ...

The purpose of the thesis was to further investigate the possibility to complement the rotary converters with a phase shifting device as a continuation of the work done in the master thesis; Load flow control and optimization of Banverkets 132 kV 16 2/3 Hz high voltage grid. With this modification, rotating converters can be used almost as flexible as static converters. The earlier thesis has c...

INTRODUCTION Underground stations can broadly be divided into two methods of construction: cut and cover (i.e. excavating a trench and recovering) and tunnelling. The station layout is mostly comprised of the areas that are common to all stations and their spatial planning must be set out with a thorough understanding of passenger circulation patterns. The station components, namely the ticket ...