A study of protective operation strategy for a distributed generation system with wind turbines

A control strategy for a wind power system may have to consider the real-time operation status of all components in generation system, transmission system, distribution system and demanding side if such a wind turbine plays an important role in a power system, for example, standalone operation. The real-time operational information of wind turbines (WT) may be utilized for coordinative control and protection. This paper studies the impacts of different execution time of protective operations, e.g. load shedding in a distribution system, on fixed speed wind turbine (FSWT) stability under various fault duration situations. The characteristics of induction generator based FSWTs is analyzed, and the influences of different wind speeds is considered.