Method for co-ordinating application of FACTS-based stabilisers in multimachine power system using fuzzy output feedback controller

A new fuzzy proportional action is introduced to enhance the performance of output feedback controllers. This fuzzy system has a simple structure and acts as a nonlinear function so that the gain of the controller is not constant but changes according to the error value. To show the effectiveness of the proposed fuzzy output feedback controller computer simulations for co-ordination application of two thyristor controlled series capacitor-based stabilisers are performed.