Effect of hydraulic system models on power system transient stability analysis

Abstract

The dynamic models of hydraulic system used in power system transient stability analysis are presented. The dynamic characteristic of turbines and conduits are studied in detail. Different models taking elastic or rigid water-hammers into consideration are established. Together with the conventional models of the power system, the power system transient stability analytical software is improved. Using the updated software, the dynamic process of Three Gorges power station and the power system interconnected with it is analyzed for disturbance. The effect of different hydraulic system models in transient stability is compared and discussed.link_to_subscribed_fulltex