ABSTRACT
This chapter describes some system models for analytical purposes. It turns the attention to models for transient or dynamic operational studies. The chapter gives a discussion of a model of the prime mover and governor system. It introduces the models for hydraulic turbines and governing systems as well as steam turbines and their governing systems. Load models are traditionally classified into two broad categories: static models and dynamic models. The prime sources of electrical energy supplied by utilities are the kinetic energy of water and the thermal energy derived from fossil fuels and nuclear fission. Comparing the turbine models for hydraulic turbine and steam turbine, it is clear that the response of a steam turbine has no peculiarity such as that exhibited by a hydraulic turbine due to water inertia. The chapter concentrates on models for power system stability in the time domain. It discusses electric excitation model as well as prime mover and governor system models.
