Parameter Value Selection of Wind Turbines Frequency Controller

Frequency control of the power system with high penetration level of converter connected renewable power generation has become a challenge to system operators. In order for reliable operation of power system, variable speed wind turbines(WT) are required to provide frequency control to power system. This paper focuses on the frequency controller parameter value selection of the variable speed WTs. The WTs are controlled to have both the inertial response and primary frequency control capability which is similar to the synchronous generators. The de-load level of the WT is discussed, according to the operation curves, the value for the frequency controller gains is discussed. Matlab/Simulink is adopted to demonstrate the frequency control performances with different controller parameter values, the results show the variable speed WTs can be controlled to have similar frequency response as the synchronous generators, through proper controller value selection the WTs can have a better frequency control performance, which is helpful for the safe operation of the power system.