Design & Evaluation of a Protection Algorithm for a Wind Turbine Generator based on the fault-generated Symmetrical Components

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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A protection relay for a wind turbine generator (WTG) based on the fault-generated symmetrical components is proposed in the paper. At stage 1, the relay uses the magnitude of the positive-sequence component in the fault current to distinguish faults on a parallel WTG, connected to the same feeder, or on an adjacent feeder from those on the connected feeder, on the collection bus, at an inter-tie or at a grid. For the former faults, the relay should remain stable and inoperative whilst the instantaneous or delayed tripping is required for the latter faults. At stage 2, the fault type is first evaluated using the relationships of the fault-generated symmetrical components. Then, the magnitude of the positive-sequence component in the fault current is used again to decide on either instantaneous or delayed operation. The operating performance of the relay is then verified using various fault scenarios modelled using EMTPRV. The scenarios involve changes in the position and type of fault, and the faulted phases. Results confirm that the relay can successfully distinguish between faults that require an instantaneous, delayed or non-operation response.
Original languageEnglish
Title of host publication 2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies (ISGT Europe)
Number of pages6
Publication date2011
ISBN (print)978-1-4577-1422-1
ISBN (electronic)978-1-4577-1420-7
StatePublished - 2011


Conference2011 2nd IEEE PES International Conference and Exhibition on "Innovative Smart Grid Technologies"
???event.location???Manchester Central Convention Complex
CountryUnited Kingdom
Internet address
CitationsWeb of Science® Times Cited: No match on DOI


  • Delayed operation, Wind turbine generator protection, Instantaneous operation, Non-operation, Outage section minimization
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ID: 5730432