Wide Area Protection Scheme Preventing Cascading Events based on Improved Impedance relay

Zhou Liu, Zhe Chen, Haishun Sun, Yanting Hu

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

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Load flow transferring after an initial contingency is regarded as one of the main reasons of causing unexpected cascading trips. A multi agent system (MAS) based wide area protection strategy is proposed in this paper to predict the load flow transferring from the point of view of impedance relays, and prevent the unexpected relay operations accordingly. The variations of node injections during the post fault transient period will be also considered in the prediction algorithm. The power system of Eastern Denmark modeled in real time digital simulator (RTDS) will be used to demonstrate the proposed strategy. The simulation results indicate this strategy can successfully predict and prevent the unexpected relay operation caused by load flow transferring.
Original languageEnglish
Title of host publicationProceedings of the 2013 China-Korea Relay Protection Forum
Number of pages5
PublisherTsinghua University
Publication date2013
Publication statusPublished - 2013
Event2013 China-Korea Relay Protection Forum - Urumqi, China
Duration: 14 Aug 201320 Aug 2014


Conference2013 China-Korea Relay Protection Forum


  • Cascading trips
  • Load flow transferring
  • Multi agent system
  • Wide area protection

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