Effect of Variation of Penstock Parameter on ...

Study of hydraulic transients in hydropower plants especially in hydraulic turbine units with penstock is an important aspect. These transients cause large pressure and sub pressure oscillations in turbine hydraulic system. Hence these must be evaluated to avoid mechanical failure. In this paper, a turbine- penstock model has been analysed to study the effect of water hammer. Also an attempt has been made to analyze the effect of length, diameter and thickness of the penstock on water hammer. The simulation