ROBUST DECENTRALIZED DESIGN FOR MULTIPLE FACTS DAMPING CONTROLLERS

A systematic robust decentralised design procedure based on the H-infi nity-optimisation technique for tuning multiple FACTS devices is prese nted. The design procedure uses a model-matching robustness formulatio n and requires the design of a parameter to achieve decentralised cont rol. The approach is used to design damping controllers for an SVC and a TCSC to enhance the damping of the interarea modes in a 3-area 6-ma chine system, The feedback signals for the controllers are synthesised from the local voltage and current measurements.