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Impact of difference of feeder impedances on the performance of a static transfer switch

Mokhtari, H ; Sharif University of Technology | 2004

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  1. Type of Document: Article
  2. DOI: 10.1109/TPWRD.2004.825125
  3. Publisher: 2004
  4. Abstract:
  5. Conventionally, control system of a static transfer switch (STS) is designed based on the assumption that the STS terminal voltages are in-plane. This paper investigates the impact of phase difference of the STS terminal voltages on the STS transfer time and cross current. The phase difference is assumed to be a result of the difference of the feeder impedances. The paper shows that phase differences of even up to 4.5°, which are accompanied by up to 5% voltage drop at the STS terminal, can noticeably increase the transfer time and the cross current magnitude. The studies are conducted on the IEEE STS-1 benchmark system using the PSCAD/EMTDC software
  6. Keywords:
  7. Load transfer ; Power quality ; Sensitive loads ; Static transfer switch
  8. Source: IEEE Transactions on Power Delivery ; Volume 19, Issue 2 , 2004 , Pages 679-685 ; 08858977 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/1278426