The parameter identification of power system and its application for transient stability analysis

Mathematical models of power system elements are fundamental to power system studies such as planning, design, operation and control. It is necessary to improve the accuracy of power system simulation by means of identification techniques to obtain more realistic parameters of the elements in real power systems. In this paper, field tests to obtain the parameters and field tests to validate the models and their parameters are briefly described with emphasis on the comparison of test and simulation results. Transient stability studies show that the dynamic characteristics of power systems can be more exactly represented by using the models and parameters obtained from field test data. They also show that the total power output of the concerned power plant can be increased by 4-6 percent. Thus the economic benefit is considerable.<>