Evaluation and Analysis of Transfer Flexibility of Distribution Network with Electric Energy Routers

In order to improve the flexibility of power system, power electronic devices represented by the electric energy router (EER) have been considered to be used to deal with the influence of the fluctuation and uncertainty of the photovoltaic and wind power or the load in the distribution network. This paper puts forward the evaluation index of the transfer flexibility of the distribution network, and establishes the corresponding optimization model of the distribution network considering network reconfiguration, and the integration of the distributed generation and the electric energy router. In this paper, the selected 94-bus AC distribution network is as the base case to evaluate the transfer flexibility index, and the influence of the electric energy router and the integration of schedulable/unschedulable distributed generation (DG) on the transfer flexibility of the distribution network is analyzed. The results show that the EER can improve the transfer flexibility of distribution network efficiently.