Assessment of frequency performance by wind integration in a large‐scale power system

Abstract

AbstractLarge‐scale grid integration of wind energy particularly in the southeastern portion of the Mexican interconnected power system has affected available transfer capability and imposed additional uncertainty on power system operation. Integrating large amounts of wind energy into the system is challenging because of the variability in power system dynamics and a more complex active and reactive power dispatch.Wind plants have been installed in the Mexican systems during the past few years. The total installed wind energy capacity of the system is around 2.5 GW; the total wind energy generation represents 4% of current installed generation in the Mexican system. Increase of the wind power is expected to have an impact on power system control and transient behavior, especially as the amount of wind generation represents a significant portion of the local generation and wind farms grow in size and complexity.Using recent planning and operation wind data, detailed studies on the effects of new wind generation on power system dynamic behavior are carried out. Analyses of the dynamic impact of large wind parks on power system dynamic performance are conducted. Operating impact studies include frequency behavior and the response of wind farms to major disturbances.Simulation studies on a realistic 4000‐bus dynamic model of the Mexican interconnected system show that large wind generating plants have a significant effect on system dynamic behavior.