Coordination Planning of Integrated Energy System and Electric Vehicle Charging Station Considering Carbon Emission Reduction

The energy crisis and increasing concerns about the environment in modern society have fostered the development of integrated energy system (IES) and electric vehicles (EVs). Charging stations (CSs) for electric buses (EBs) with battery swapping technology will be the main energy supply mode of urban electrified green public transport in IESs. This article proposes a coordination planning method for IESs integrated with CSs considering carbon emission reduction. First, this article establishes a load forecasting model of EBs, a carbon emission model of a IES with CSs, and a CS configuration model that describes a CS's operational characteristics. Based on these models, a coordinated planning model is formulated for IESs with CSs. The planning model optimizes the capacity and charging/discharging plans of the CSs and the operation plans of other energy devices in the IES, with the objective of maximizing the net present value of the system. The carbon emission reduction due to the utilization of CSs and distributed renewable energy sources is considered as an equivalent economic profit item in the planning model. The CPLEX solver is adopted to solve the planning model. Case studies are performed on a simulated IES system integrated public EBs to validate the effectiveness of the proposed model.