WIT Press


Transient Stability Analysis Of Low Frequency Railway Grids

Price

Free (open access)

Paper DOI

10.2495/CR160201

Volume

162

Pages

11

Page Range

213 - 223

Published

2016

Size

1,403 kb

Author(s)

J. Laury, M. H. J. Bollen, L. Abrahamsson

Abstract

This paper investigates the replacement of Rotary Frequency Converters (RFCs) with Static Frequency Converters (SFCs) in the Swedish synchronous-synchronous Railway Power Supply System (RPSS) operating at 16⅔ Hz. There is a need to investigate how such a system behaves when RFCs are partly replaced with SFCs, as the SFCs do not have any physical inertia.

Most of the transient stability studies published for synchronous-synchronous RPSS address the behaviour of a single RFC or SFC against an infinite bus. However, there are very few studies investigating a system with several RFCs, SFCs or a mix of both in the same converter station. This paper presents the results of a transient stability study with both RFCs and SFCs. The investigated cases consist of faults at different locations, and present the results when an RFC is replaced with an SFC in a converter station.

Keywords

rotary frequency converters, static frequency converters, 16⅔ Hz AC railways, transient stability