考虑换电储备的电动汽车光伏换电站动态功率分配方法

发布时间：2019-07-20 08:41

【摘要】：功率分配方式是电动汽车光伏换电站实际运行中的关键问题。本文首先给出光伏换电站的系统结构及其基本组成单元的功能模型。为评价光伏换电站的运行性能,构建体现换电服务可用性和可再生能源就地消纳利用情况的运行性能评价指标。在此基础上,提出了考虑换电储备的光伏换电站动态功率分配方法:一方面,引入短期换电需求预测的结果,建立换电服务模型;另一方面,根据每时段站内可用的动力电池总量及光伏输出功率,建立功率分配模型。通过对实际光伏换电站运行算例的仿真求解,从系统功率平衡、运行性能指标分析等方面验证了所建模型的合理性和正确性。仿真结果证实了该方法在保障换电服务可用性的前提下有效提高了光伏就地消纳利用比例。本文所提方法将为我国示范城市换电站的优化运行提供理论依据和技术支撑。
[Abstract]:Power distribution is the key problem in the actual operation of photovoltaic power station of electric vehicle. In this paper, the system structure of photovoltaic power station and the functional model of its basic components are given. In order to evaluate the operation performance of photovoltaic power station, the operation performance evaluation index reflecting the availability of power exchange service and the local absorption and utilization of renewable energy is constructed. On this basis, a dynamic power allocation method of photovoltaic power station considering power exchange reserve is proposed: on the one hand, the short-term demand prediction results are introduced to establish the power exchange service model; on the other hand, according to the total amount of power cells and photovoltaic output power available in each period of time, the power distribution model is established. Through the simulation solution of the actual photovoltaic power station operation example, the rationality and correctness of the model are verified from the aspects of system power balance, operation performance index analysis and so on. The simulation results show that the method can effectively improve the local absorption ratio of photovoltaic under the premise of ensuring the availability of power exchange services. The method proposed in this paper will provide theoretical basis and technical support for the optimal operation of demonstration urban power stations in China.
【作者单位】：华北电力大学新能源电力系统国家重点实验室;
【基金】：国家自然科学基金(51277067) 国家高技术研究发展(863)计划重大项目(2011AA11A280) 首都科技条件平台项目(Z131110000613053)资助
【分类号】：TM615;U469.72

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