Phase Shifting Transformer Application with Considering the Economic and Reliable Operation of the Grid

Razi Rezvanfar, Hassan Ghasemi, Mohammad Ehsan Mosayebian, Mohammad Ghomi, Filipe Miguel Faria da Silva, Claus Leth Bak

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review


It is widely accepted that the Flexible AC Transmission Systems (FACTS) such as phase shifting transformer (PST) can be a long-term solution in order to address the transmission congestion. In order to guarantee the good performance of the PSTs, this paper proposes a new two-stage methodology to find the optimal locations for PSTs. In the first stage, some candidate locations are selected aiming to minimize the overall system operation cost and investment costs considering N-1 contingency security criterion. In the second stage, the multi-attribute decision making (MADM) technique has been devised to evaluate and then rank the candidate locations based on some important system performance indices. The speculated indices suitably represent the power system security and reliability, transmission congestion, and power transfer capability. The outcome is the best locations to site the PSTs with regards to both technical and economic aspects.
Original languageEnglish
Title of host publicationProceedings of CIGRE Symposium Aalborg 2019
Number of pages17
PublisherCIGRE (International Council on Large Electric Systems)
Publication dateJun 2019
Publication statusPublished - Jun 2019
EventCIGRE Symposium Aalborg 2019 - Aalborg, Denmark
Duration: 4 Jun 20197 Jun 2019


ConferenceCIGRE Symposium Aalborg 2019


  • Phase shifting transformer
  • Congestion
  • Reliability assessment
  • Location optimization

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