Fault recovery strategy of distribution networks with multiple EHs for reliability improvement

It has become a trend that user-side electricity/heat/gas energy supplies and loads are connected to the distribution network with energy hubs (EHs). The integrations of EHs bring new opportunities for the improvement of power supply reliability of distribution networks. For the distribution network with multiple EHs, a fault recovery strategy for the improvement of power supply reliability is proposed in this paper. Combining the models of EHs and radial distribution network, the typical structure of distribution network with multiple EHs is analyzed. Considering the scope of the fault and EH optimal dispatching, a failure recovery strategy for reliability improvement of distribution network with multiple EHs is proposed. With the objective of minimum power outage losses and operating costs, an optimal scheduling model for multiple EHs island operation is established. The analysis of the calculation example shows that the grid-connected operation of EH can improve the reliability of distribution network, and the optimal dispatch of the EH can effectively reduce the loss of power outage during the failure.