Abstract
In order to achieve a prospective economic effect of renewable energy generations and vehicle to grid (V2G), this paper proposes an optimal dispatch method of wind-PV-battery microgrid considering V2G under time-of-use (TOU) tariffs for those isolated communities in remote islands and mountainous areas. A cooperative dispatch strategy and an optimal dispatch model are both presented for the total operation cost minimization and higher utilization of renewable energy generation. Finally, the simulation results show that the proposed method is effective and feasible.
Highlights
The environmental problems caused by fossil energy are becoming more serious, as it will produce a large amount of harmful gas such as carbon dioxide, sulfur dioxide and other emissions to cause a series of environmental pollution in the process of producing and combustion
Literature [11] makes an analysis of the influence of TOU price on the charging probability of electric vehicle (EV), and gives an optimal dispatch strategy obtained by using PSO algorithm
The microgrid is in a flat valley period under the condition of insufficient wind and PV power supply, giving priority to purchasing electricity from EVs with low electricity prices to make up for the lack of power supply to the system, judging battery capacity, when the battery capacity does not reach the maximum capacity SOCmax, the EV should be used to charge battery energy storage (BS) as much as possible, which is used to prepare for the electric output during peak-time
Summary
The environmental problems caused by fossil energy are becoming more serious, as it will produce a large amount of harmful gas such as carbon dioxide, sulfur dioxide and other emissions to cause a series of environmental pollution in the process of producing and combustion This drives the green renewable energy generations (such as wind turbine (WT), solar photovoltaic (PV), etc.), microgrid (MG) and other advanced energy technologies research and development [1]. Literature [12] presents an optimal operation model for wind-PV-battery household user-side microgrid based on demand response and TOU tariffs These studies have paid more attentions to dispatch economic and environmental aspects, but less for the coordination dispatch strategy among various microgrid DG units and a special flexible load of EV under demand response mechanism. This paper presents an optimal dispatch method as to minimize the total economic cost for a wind-PV-battery hybrid energy microgrid considering V2G under TOU tariffs. The effectiveness and effectiveness of the presented method were verified by simulation results, which show the proposed method can achieve the minimum system operation cost and the maximum renewable energy utilization
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