Publication

Abstract : Health monitoring of a smart grid is very important to ensure reliability of the grid. This can be achieved by developing various indicators for the components of the grid. These indicators are very powerful if they are model based as they can be used in real time without need for extra hardware provided the model of the systems and the model parameter values are available. This work presents a novel H∞ filter based fault indicator. The fault chosen here is the stator interturn fault of a wound rotor synchronous generator. It will be proved that (1) the indicator sensitive to fault and is insensitive to other kinds of spurious effects like load imbalance. (2) The indicator can be used to find the magnitude of fault. (3) The indicator can function irrespective of the type of uncertainties assumed in modelling the system. As far as the knowledge of the author goes this is the first time H-∞ filter based indicators are used for stator interturn fault of a wound rotor synchronous generator.