考虑储能动态运行特性的充电站光储容量优化配置模型

光伏和储能技术的快速发展,为"新基建"背景下大规模充电桩接入电网提供了可靠支撑.考虑到城市充电站配置光伏以及储能系统,文章提出了光储容量优化配置方法.首先,基于储能系统的充放电特性,融合储能容量衰减、寿命损耗、动态效率特性,建立了动态的精细化储能模型.然后,在精细化储能模型基础上,以充电站成本最小化为目标建立混合整数非...

Optimal Configuration Model of Photovoltaic and Energy Storage Capacity of Charging Station Considering Battery Dynamic Characteristics

Under the policy of "New Infrastructure", the development of photovoltaic (PV) and battery energy storage (BES) technologies supplies reliable support for large scale charging piles integration into grid. This paper proposes an optimal configuration method for BES and PV in charging station. Firstly, capacity degradation, lifetime loss, and dynamic efficiency are integrated to the discharging and charging characteristics of BES to establish a refined BES model. According to this model, a mixed integer non-linear programming (MINLP) model is developed to minimize the cost of charging station. By separating variables, the MINLP is transferred to a double-layer model. The optimal solution of external layer is determined through genetic algorithm (GA), and the inner layer optimization can be solved by commercial solvers. Lastly, the double-layer model is simulated in a case study, and the simulation results validate the feasibility of the proposed model and solution methods, which could be a reference for PV and BES configuration in electric vehicle charging station.