Performance analysis of high speed power quality disturbance recognition scheme for static transfer switch application

  • Authors:

  • Ramesh Pachar;Harpal Tiwari;Ramesh C. Bansal

  • Affiliations:

  • Elect. Engg. Department, SKIT, M&G, Jaipur, India;Elect. Engg. Department, Elect. Engg. Department, MNIT, Jaipur, India;School of Elect. Engg. & I T, University of Queensland, Australia

  • Venue:
  • WSEAS Transactions on Circuits and Systems
  • Year:
  • 2008

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Abstract

The static Transfer Switch (STS) is a network reconfiguring device and is used for power quality improvement of sensitive loads. It selects, at high speeds, between two or more sources of power and provides the best available power to the sensitive load. This paper presents fundamentals of solid state STS with a detailed emphasis on power quality disturbance recognition scheme, as it is responsible for fast and accurate detection of disturbances, thereby ensuring healthy transfer of load to an alternate source. Extensive simulations are carried out for investigating the performance of rather commonly employed detection scheme. The behavior of detection scheme is analyzed against various types of disturbance scenarios including system transients.