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Internal electrical protection of wind turbine with doubly fed induction generator
Internal protection system of Doubly Fed Induction Generator (DFIG) wind turbine (WT) is one of the most challenging issues in the operation of distributed generation systems especially when penetration level and capacity of them are increasing. Due to a tendency to increase the capacity of wind turbine up to 10 MW with penetration of more than 20% of total power generation in the close future, some standardization and revision should be inspected in this area. The most important reason is that the protection of wind turbines has been considered mainly by manufacturers without significant considerations and requirements from grid system.
This paper deals with the internal protection of DFIG-WTs and shows overall view of internal protection functions of them; and three new scheme: differential protection for inter-turn fault protection, new startup and synchronization method and protection coordination of over current protection with FRT requirements have been proposed.
Publication titleRenewable and Sustainable Energy Reviews
Department/SchoolSchool of Engineering
Place of publicationUnited Kingdom
Rights statementCopyright 2015 Elsevier Ltd.