考虑动态频率支撑的储能选址定容规划方法  

Energy Storage Location and Capacity Planning Method Considering Dynamic Frequency Support

作　　者：张智 周明 武昭原 刘建琴 刘斯伟 郭尊 ZHANG Zhi;ZHOU Ming;WU Zhaoyuan;LIU Jianqin;LIU Siwei;GUO Zun(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China;State Grid Economic and Technological Research Institute Co.,Ltd.,Changping District,Beijing 102209,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京市昌平区102206 [2]国网经济技术研究院有限公司,北京市昌平区102209

出　　处：《中国电机工程学报》2023年第7期2708-2720,共13页Proceedings of the CSEE

基　　金：国家自然科学基金项目(U1866204);国家电网公司科技项目(SGLNDK00KJJS2100227)。

摘　　要：“双碳”目标的提出加快以风光为代表的新能源发电并网,高比例电力电子接口新能源发电并网将导致电力系统的频率响应及灵活调节能力下降。以电化学为主的新型储能有望在提供安全支撑和灵活性方面发挥重要作用。文章提出考虑动态频率支撑的电池储能规划方法,建立电池储能提供快速频率响应的系统动态频率安全模型,并将其嵌入典型日运行模拟的储能规划模型,通过评估系统惯量分布指导储能选址,进而以投资和系统运行成本最小为目标规划储能容量。为准确掌握高比例新能源电力系统的动态频率变化和灵活性需求,引入典型日运行模拟,并将其建模为考虑频率安全约束和新能源不确定性的鲁棒模型。规划模型考虑不确定场景下的储能工作模式切换,采用嵌套列约束生成算法求解。算例分析表明,所提方法能够合理规划储能的选址,提高系统运行时的频率安全,促进新能源消纳。The goal of“carbon peak and carbon neutrality”accelerates the grid connection of new energy generation represented by wind and solar energy.A high proportion of power electronic interface and grid connection of new energy generation would lead to the decline of frequency response and flexible regulation capacity of power systems.The new energy storage based on electrochemistry is expected to play an important role in providing security support and flexibility.An energy storage planning method considering dynamic frequency support is proposed.The dynamic frequency security model of fast frequency response provided by battery energy storage is established,which is embedded into the energy storage planning model of typical daily operation simulation,and the energy storage location is guided by evaluating the system inertia distribution,to plan the energy storage capacity with the minimum investment and operation cost.To accurately grasp the dynamic frequency variation and flexibility requirements of high proportion new energy power system,the operation layer is modeled as a robust model considering frequency security constraints and new energy uncertainty.The planning model considers the working mode conversion of energy storage in uncertain scenarios and uses the nested column-and-constraints generation(C&CG)algorithm to solve it.Case studies show that the proposed method can reasonably plan energy storage and improve the frequency security of system operation,and promote the accommodation of new energy generation.

关 键 词：储能规划 惯量分布 频率约束 不确定性 鲁棒优化 

分 类 号：TM46[电气工程—电器]