Ride-through of induction generator based wind park with switched capacitor, SVC, or STATCOM

This paper discusses about the ride-through capability of a large induction-generator based wind park with different reactive power support solutions. Three different solutions have been compared and it has been shown that conventional switching of capacitors is able to help the wind park meet the Nordel gird code requirements on low voltage ride-through. The requirements on rating are shown to be the same for an SVC and for a STATCOM. Two aggregation methods for large wind parks have been studied and an error estimation has been made. It is shown that a two-machine model is the smallest one that gives an acceptable error in reactive-power flow. A single-machine model is not appropriate to assess fault-ride-through.