Virtual Inertial Control of a Wind Power Plant using the Frequency Deviation and the Maximum Rate of Change of Frequency

Abstract

Conventionally, a frequency of a power system is recovered to the nominal value by the inertial, primary, and secondary responses of the synchronous generators (SGs) after a large disturbance such as a generator tripping. For a power system with high wind penetration, the system inertia is significantly reduced due to the maximum power point tracking control based operation of variable speed wind generators (WGs). This paper proposes a virtual inertial control for a wind power plant (WPP) based on the frequency deviation and maximum rate of change of frequency loops to release more kinetic energy stored in the WGs. The performance of the algorithm is investigated in a model system, which consists of a doubly fed induction generator-based WPP and SGs using an EMTP-RV simulator. The results indicate that the algorithm can improve the frequency drop after a generator tripping.