Control concepts to enable increased wind power penetration

This paper addresses problems encountered in planning and operation of wind farms in areas with favorable wind conditions, but long distances to load centers and relatively weak transmission systems. The paper presents an overview of several control problems and challenges to he considered in order enabling increased wind power penetration. This includes control objectives related to voltage/reactive power control and active power control, including management of network constraints. Realistic examples are provided to illustrate proposed solutions with respect to coordinated control of wind farms and their interactions with the existing transmission and generation system. Results from computer analyses of a simplified, yet realistic, electrical power system model are used to illustrate two possible control concepts to achieve increased wind power integration. These are reactive power control and coordinated generation control.