Evaluation of Frequency Modulation Contribution of Wind Turbines with Multiple Types of Control

The analysis focuses on examining the potential and practicality of doubly-fed induction wind turbines participating in active power output regulation and frequency control. The study investigates the frequency response characteristics of wind turbines when multiple links are involved. It defines the contribution of new energy to frequency response and establishes a low-order linearized system's frequency dynamic model. By analyzing how the addition of new energy affects frequency change, it proposes a suitable contribution index for the dynamic process. A simulation system prototype incorporating new energy is developed to address electromagnetic transient simulation results, enabling an analysis of the effectiveness of the contribution index and facilitating enhanced frequency response capabilities for wind turbines.