Dynamic Composite Load Model Priority Placement Based on Electrical Centrality

Dynamic load models are an integral part of transient stability analysis. Due to the non-linearity of realistic demand factors, developing accurate load models is a challenging process. A variety of methods have been developed to reduce the number of parameters to identify and estimate within the models, and methods exist for determining more accurate load models. An alternative to reduce the effort to develop and implement dynamic load models is to reduce the number of models in the system that need to be created and by creating priority placement guidelines of load models in the system. This paper develops preliminary guidelines for priority placement of the composite load model based on electrical centrality. Using a 2383-bus version of the Poland Test Case, we group buses and their loads into quartile levels based on their magnitude of electrical centrality. A statistically significant trend is identified highlighting priority placement of developing composite load models in certain quartile levels. These findings are useful to utilities and balancing authorities that need to prioritize their efforts to develop dynamic load models.