考虑柔性负荷的光伏发电网储能灵活规划模型.pdfVIP

Microcomputer Applications Vol.39,No.8,2023 基金项目 文章编号：1007-757X （2023)08-0068-04 考虑柔性负荷的光伏发电网储能灵活规划模型 吴继岩，张怀垠，马鑫，妥平 （国网固原供电公司，宁夏，固原756000） 摘要：为了提高光伏发电网储能利用率，设计一种考虑柔性负荷的光伏发电网储能灵活规划模型。模型根据光伏发电网的 特点建立。分析超级电容器的存储能量与电压数值的关系，求解光伏发电网中电荷状态；根据光伏发电转换电路计算光伏电 网调频备用容量；在考虑用户柔性负荷情况下建立光伏发电规划的目标函数和约束条件并求解，完成储能灵活规划模型的设 计。算例分析结果表明，考虑柔性负荷的规划方法联络线的功率曲线更加平滑，缩小了用电负荷峰谷差，减小了电网储能和 投入成本。 关键词：柔性负荷；光伏发电；储能灵活规划；粒子群算法；调频容量 中图分类号：TM732 文献标志码：A Flexible Planning Model for Energy Storage in Photovoltaic Power Grid Considering Flexible Load WU Jiyan, ZHANG Huaiyin, MA Xin, TUO Ping (State Grid Guyuan Power Supply Company, Guyuan 756000,China) Abstract: In order to improve the utilization rate of energy storage in photovoltaic power generation network, a flexible planning model of energy storage is designed by considering flexible load. According to the characteristics of photovoltaic power genera- tion network, a mathematical model is established, the relationship between the stored energy of supercapacitors and voltage values is analyzed, the charge state in photovoltaic power generation network is solved, the frequency modulation reserve capac- ity of photovoltaic power generation network is calculated according to the photovoltaic power generation conversion circuit, and the objective function and constraint conditions of photovoltaic power generation planning are established and solved consid- ering the flexible load of users, so as to complete the design of the flexible energy storage planning model. The example analy- sis results show that the power curve of tie-line is smoother, the peak-valley difference of power load is reduced, and the energy storage and input cost of power grid are reduced. Key words: flexible load; photovoltaic power generation; flexible planning of energy storage; particle swar