Daily Economic Optimal Dispatch of Energy Router Considering the Voltage of Distribution Network

With the development of distributed generation and the emergence of flexible loads such as energy storage (ES) and electric vehicle (EV), the control variables of power flow in low voltage distribution network have been increasing. In this paper, the optimal control of a multiport “PV -ES-EV” energy router (ER) is analyzed. Based on its operation characteristics and the power usage requirements, a daily economic optimal dispatch model is established, which takes minimum cost of the whole system as the objective function while considering the voltage regulation of the distribution network. Finally, a study case is constructed based on actual time of use (TOU) price. And the proposed ER based optimal dispatch strategy is compared with the traditional peak load shifting strategy based on common energy storage system in several aspects. It is proved that the proposed strategy can fully utilize the potential of flexible loads, guarantee the power quality of the distribution network and promote the economy of energy consumption.