Abstract:
In the post-disaster fault scenario,the decentralized large-scale electric vehicles in the city have considerable discharge potential,which can support the restoration of critical loads in the distribution system and reduce the loss of power outage.However,since electric vehicle users do not belong to the power grid or enterprises,it is vital to study how to guide electric vehicle users in order to maximize recovery benefits.A load restoration method is proposed for a distribution system,considering electric vehicle guidance and network reconfiguration.First,the process of EV users’ participation in distribution network fault recovery is analyzed,and then the key factors affecting EV users’ participation in restoration are proposed,and a guiding decisionmaking model considering EV users’ preferences is established.Then,combined with the distribution network reconstruction and restoration method,considering the power flow constraint,generation resource constraint and electric vehicle discharge constraint,a distribution system fault restoration model is established taking electric vehicle guidance and network reconstruction into account.Finally,the modified IEEE 33 node test system verifies that the proposed method can effectively solve the restoration strategy,ensure the power supply of critical loads during the restoration period,thus enhancing the resilience of the grid.