Static frequency converters: a flexible and cost efficient method to supply single phase railway grids in Australia

This paper presents the results of a study showing the potential benefits of installing static frequency converter systems instead of the more traditional single phase transformer solution for 25 kV 50Hz traction power supply. The static frequency converter (SFC) solution is already well established for railway systems with lower frequencies like 16.7 Hz and 25 Hz. A detailed analysis will emphasize the technical setup possibilities and benefits of this solution compared with the conventional transformer supply solution for 50 Hz substations. Although the power supply by means of single phase transformers connected to the three-phase domestic grid seems to be obvious and simple at a first glance, several disadvantages (e.g., unbalanced loading of the three-phase grid, harmonic current injection from the railway into the feeding grid and the need for neutral sections in the catenary system) can be eliminated by using SFC. Results will show that a traction power supply concept based on SFC solution reduces installation, operation and maintenance costs, while increasing system efficiency and reliability in addition to generating extra revenue in the form of reactive power compensation on the public grid. The paper will also introduce the reference project,Wulkuraka, one of the new static frequency converter feeder stations of Queensland Rail near Brisbane.

Media Info

  • Pagination: 12p. ; PDF
  • Monograph Title: AusRAIL PLUS 2015, doing it smarter. People, power, performance, 24-26 November 2015, Melbourne, Victoria, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01601946
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Jun 17 2016 9:45AM