Comparisons between 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. At the same time, a strategy of the parameter estimation of the SLM is proposed in this paper. The proposed parameter estimation strategy is 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 composite load model are estimated, while the other parameters playing limited role are set as the default values which is obtained by the component based method. The efficiency of the proposed strategy is verified by the load modeling based on the field measurements.