Abstract:
The increasing penetration of electric vehicles has significantly strengthened the coupling between urban transportation systems and power systems. Comprehensively considering the multi-stakeholder characteristics of the coupled power-transportation system and the optimal dispatch requirements on multiple objectives such as economic costs and carbon emissions, a coordinated operation model of the power-transportation system based on multi-objective optimization is proposed. Firstly, the mixed user equilibrium model and the second-order cone Dist Flow model are adopted to describe the distribution of traffic flow and power flow. Secondly, the function models describing economic costs and carbon emissions are established, and three groups of multiobjective optimal dispatch models are established according to different stakeholders and dispatch objectives. Thirdly, the enhanced epsilon-constrained method combined with several linearization methods is adopted to efficiently derive the Pareto frontier of each multi-objective optimization. A method for capturing a fair compromise solution is proposed to balance the interest of each stakeholder. Finally, based on a 12-bus ring transportation network and a modified IEEE 33-bus distribution network, the dispatch results of each group of multi-objective problems are thoroughly analyzed.