A New Modeling Method Considering Load Frequency Characteristics

Abstract

Practice shows that the frequency characteristics of the load have important influence on analysising the safety and stability of the power grid. In order to improve the accuracy of the load model, a comprehensive load model considering load frequency characteristics is established based on the static load frequency factor and the frequency dependent part of induction motor model. For the parameter of the load model, a new composite modeling method based on the combination of statistical comprehensive method and measurement-based modeling approach is proposed to calculate and check the parameters of the model. Finally, a simulation example is given to illustrate the effectiveness of the proposed composite modeling method considering load frequency characteristics