The requirement specification in chapter 9 has clearly shown, that the uncoordinated use of FACTS-devices involves some negative effects and interactions with other devices, which leads to an endangerment of the steady-state and dynamical system security. This chapter shows one approach to overcome these difficulties and provides a solution for a coordinated control system fulfilling the specified requirements.
An autonomous control system for electrical power systems with embedded FACTS-devices is developed that provides the necessary preventive coordination. With methods of computational intelligence the system automatically generates specific coordinating measures from specified abstract coordinating rules for every operating condition of the power system without human intervention or control. This guarantees an optimal utilization of the technical advantages of FACTS-devices as well as the steady-state and dynamical system security. Interactions between the autonomous system and other existing controllers in electrical power systems are taken into consideration so that the autonomous system can completely be integrated into an existing conventional network control system.