DFIG-based Windfarm Starting Connected to a Weak Power Grid

摘要

Starting and energization of windfarms has always been done under strong grid conditions. With the increase in blackouts and desire to run parts of the system in island mode, it is necessary to examine the starting of windfarms under different system conditions. This work provides an analysis into the starting of DFIG based windfarms under weak grid conditions including using a diesel gen-set and a hydropower plant. The starting procedure of the DFIG based wind turbine has been explored afterwhich multiple wind turbines have been started simultaneously. It is assumed that the windfarm substation will have a dump load to absorb excess power produced by the windfarm. The above study is conducted using MATLAB/SIMULINK. Results shows that the type and strength of source influences the starting process of windfarm and this is necessary in determining the appropriate moment to energize a windfarm after a wide scale blackout.