Asymmetrical Fault Analysis at the Offshore Network of HVDC connected Wind Power Plants

Omer Goksu, Nicolaos Antonio Cutululis, Poul Sorensen, Lorenzo Zeni

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Short-circuit faults for HVDC connected Wind Power Plants (WPPs) have been studied mostly for dc link and onshore ac grid faults, while the offshore ac faults, especially asymmetrical faults, have been mostly omitted in the literature. Requirements related to the offshore asymmetrical faults have been kept as future development at national levels in the recent ENTSO-E HVDC network code. In this paper offshore ac faults are studied using the classical power system fault analysis methods. It is shown that suppression of negative sequence current flow is not applicable and negative sequence current has to flow during the asymmetrical offshore faults, which implies that the offshore WPP and the HVDC offshore converter are required to provide flow of negative sequence current. The steady-state fault analysis is verified with time-domain simulations.
Original languageEnglish
Title of host publication PowerTech, 2017 IEEE Manchester
Number of pages5
Publication date2017
Publication statusPublished - 2017
Event12th IEEE Power and Energy Society PowerTech Conference: Towards and Beyond Sustainable Energy Systems - University Place, University of Manchester., Manchester, United Kingdom
Duration: 18 Jun 201722 Jun 2017


Conference12th IEEE Power and Energy Society PowerTech Conference
LocationUniversity Place, University of Manchester.
Country/TerritoryUnited Kingdom
Series2017 Ieee Manchester Powertech


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