Dynamic analysis of a grid-linked small-hydro induction generation system

In this paper, the dynamic performance of a small-hydro induction generation system integrated into grid is studied. The mathematical models including hydraulic turbine prime mover model, induction generator model, electromechanical model, power factor correction capacitor bank model are employed to cater for the dynamic behavior of the system operating under load importing, exporting, sequentially starting, and three-phase balanced fault situations. Simulation results show that the system operates satisfactorily under those conditions. The dynamic study at preliminary planning stage is essential for a small hydro project prior to construction.