A review of flexibility requirement of electric generators in high wind power penetration systems

With blossoming of wind power generation in the grid, many system operators recognize the requirement for additional flexibility to accommodate the variability and uncertainty from wind generation. Because of the high penetration of wind power, power systems are facing great operational challenges in maintaining generation balance. This study reviews the system flexibility requirement in a high wind power penetration system, and summarizes the indices to identify capabilities of new generators to satisfy the flexibility requirements. According to the review results, it presents that a system with more flexible units would accommodate much higher penetration of renewable energy and reduce the operational cost.