Parameter estimation and comparison of the load models with considering distribution network directly or indirectly

In order to consider the effect of the distribution network on the load modeling, a synthesis load model (SLM) including the power load and the distribution network has been proposed. Using SLM, the accuracy of the load modeling can be improved. A strategy for parameter estimation of the SLM was proposed in this paper. The proposed parameter estimation strategy was based on the combination of the component based and the measurement based load modeling method. During parameter estimation, only the parameters playing very important roles in the dynamics of the load were estimated, while the other parameters playing limited roles were set as the default values which were obtained by the component based method. The efficiency of the proposed strategy was evaluated by the load modeling based on the field measurements. The SLM was compared with the composite load model (CLM) both in parameter estimation and simulation accuracy.