Transient Stability Analysis Of Low Frequency Railway Grids
Free (open access)
213 - 223
J. Laury, M. H. J. Bollen, L. Abrahamsson
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.
rotary frequency converters, static frequency converters, 16⅔ Hz AC railways, transient stability