Load flow analysis and future development study for an AC electric railway

Author

Raygani, Saeid Veysi ; Tahavorgar, Amir ; Fazel, Seyed Saeed ; Moaveni, Bijan

Author_Institution

Dept. of Electr. Railway Eng., Iran Univ. of Sci. & Technol., Tehran, Iran

Volume

2

Issue

3

fYear

2012

fDate

9/1/2012 12:00:00 AM

Firstpage

139

Lastpage

147

Abstract

This study presents a forward/backward sweep (FBS) load flow method for AC autotransformer (AT)-fed electrical railway networks considering dynamic movement of trains. Field measurements of Tehran-Golshahr suburban railway are compared with simulation results. Moreover, effects of the time headway reduction on this suburban railway and its transmission power supply system are investigated. Then, to minimise power losses, two methods of the reactive power compensation are studied; the pulse-width-modulated (PWM) trains and a static var compensator (SVC). For the aforementioned cases, fluctuations of the displacement factors (DISF), defined in p-q-r theory are simulated at the point of common coupling (PCC). MATLAB software is used for programming and simulations.

Keywords

autotransformers; compensation; load flow; railway electrification; reactive power control; static VAr compensators; traction power supplies; AC autotransformer; AC electrical railway network; DISF; PCC; PWM train; SVC; Tehran-Golshahr suburban railway; displacement factor; dynamic train movement; forward-backward sweep; load flow analysis; p-q-r theory; point of common coupling; pulse width modulation; reactive power compensation; static var compensator; transmission power supply system;

fLanguage

English

Journal_Title

Electrical Systems in Transportation, IET

Publisher

iet

ISSN

2042-9738

Type

jour

DOI

10.1049/iet-est.2011.0052

Filename

6315733