Modeling and Simulation of Hydro Power Plant by Using MATLAB

The demand of electricity increases day by day. The hydropower plant becomes the best source of electricity on the earth. It is produced due to the energy provided by moving or falling water. The cost of electricity remains constant over the year. Because water is a natural source of energy present on the earth. About 71% area of earth is surrounded by the water. So producing electricity with water is the best way to keep environment – ecofriendly. The hydropower plant model was developed using MATLAB/Simulink software. The plant consist of hydro turbine connected to synchronous generator, which is connected to public grid. The dynamic response of the system to the disturbances on the system network was studied. A three phase to ground fault was introduced in the model at 0.2 sec and cleared at 0.4 sec. The simulated result shows that the generated voltage quickly regained its stability on the removal of fault the stator current went into transient after the fault was cleared and become stable at 0.6 sec. The excitation voltage also regain its stability but it was slower and the speed of the rotor was out of stable after the occurrence of the disturbance on the system. The result shows that perfect generation of energy to resist the fault. Key Words —Hydraulic Turbine, Penstock, Governor, Synchronous Generator, System Simulation