事故区間の需要家の停電復旧と持続可能な電力供給のためのEV交替運用

抄録

The purchase of electric vehicles (EVs) has been encouraged from the perspective of global environmental protection, and they have been increasing in recent years. With the spread of EVs, Vehicle-to-Grid (V2G) has been studied extensively in the power system. In many V2G studies, the batteries of EVs are mainly used at the steady state of the grid without power outages, and the charging and discharging are repeated to contribute the electricity supply-demand balancing considering the user benefits in terms of cost. This paper focuses on the automated driving, which is becoming popular increasingly. A new V2G method is proposed that the “automatically controlled EVs” contribute to restore the power outages and supply electricity sustainably at the “emergency state” of the distribution grid. The distribution grid is divided into two sections namely the failure section and the healthy section. A microgrid with EVs and a power supply vehicle, which is called Vehicle-to-Microgrid (V2MG) in this paper, is stationed in the healthy section, whereas the EVs individually supply electricity to the houses by Vehicle-to-Home (V2H) in the failure section. Thus, the EVs must continue to trip between the failure and healthy sections to supply electricity sustainably to the failure section. In this paper, the trip schedule of the EVs for the restoration is formulated as a mixed integer linear programming (MILP), and the effectiveness on the restoration and the sustainable power supply is evaluated by numerical simulations.