Power Quality Solutions for Light Rail Public Transportation Systems Fed by Medium-Voltage Underground Cables

Terciyanli A., Acik A., Cetin A., ERMİŞ M., ÇADIRCI I., Ermis C., ...More

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol.48, no.3, pp.1017-1029, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 3
  • Publication Date: 2012
  • Doi Number: 10.1109/tia.2012.2190569
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1017-1029
  • Keywords: Active filters, current source converter (CSC), harmonic distortion, harmonics, power quality (PQ)
  • Middle East Technical University Affiliated: Yes


In this paper, the combination of a thyristor-switched shunt reactor and a current source converter-based active power filter has been proposed for mitigation of power quality (PQ) problems of Light Rail public Transportation Systems (LRTSs) fed by long medium-voltage underground cables. A case study has been carried out on a typical LRTS to assess the performance of the proposed solution for both capacitive reactive power compensation of underground cables and harmonic filtering of 12-pulse catenary rectifiers. It has been shown by extensive field tests carried out that this solution meets the requirements satisfactorily, thus constituting a complete solution to the PQ problems of LRTS. Conventional PQ solutions have been also assessed, and the corresponding theoretical results are given in comparison with the proposed system.