Model study of transient stability calculation in power systems

Power systems are undergoing improvements and development in computing technology and assessment tools. For a multi-machine power system, transient stability simulation has been believed as an indispensable tool for planning, design, operation and research. The model of a synchronous generator is considered the most important factor which influence the simulation result. In this paper, two types of synchronous generator model are discussed according to their complexity. Digital simulation of an actual system of North China Power System is fulfilled to study the different characteristics of the two models and a comparison is also made.