Contents I. Introduction
The performance of the excitation system can have a great influence on the stability of a power system. However, it depends mainly on parameter setting of the excitation system. Proper parameter setting of the excitation system can improve the stability and increase the damping of the power system. On the contrary, improper parameter setting of the excitation system can deteriorate the operation of the power system. In many countries, there are clear criteria for the dynamic performance (including large signal performance and small signal performance) of the excitation systems. In simulating a power system, there exist several problems about the parameter setting of the excitation systems:
In stages of planning and designing of a power system, models and parameters of the excitation systems for the new generators may not be known, therefore, it is necessary to determine the models and the parameters of the excitation systems.
In the routine simulation of power systems for operation, models and parameters of some actual excitation systems may not be available sometimes. Therefore, it is necessary to select some models and parameters for those excitation systems.
In different power system analyzing software, models and parameters for the excitation systems are not unified yet. Therefore, it is necessary to convert the models and parameters in one software to another software in the condition that the excitation system performance remains unchanged.
