考虑灵活性的交直流混合配电网储能双层规划  

Two-Level Planning of ESS in AC/DC Hybrid Distribution Network Considering Flexibility

作　　者：宫建锋 周宗川 靳盘龙 张斌 韩一鸣 冯雪 GONG Jianfeng;ZHOU Zongchuan;JIN Panlong;ZHANG Bin;HAN Yiming;FENG Xue(Economic and Technical Research Institute of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan 750000,China)

机构地区：[1]国网宁夏电力有限公司经济技术研究院,银川市750000

出　　处：《电力建设》2022年第7期48-56,共9页Electric Power Construction

基　　金：国网宁夏电力有限公司科技项目(5229JY20000D)。

摘　　要：多类型分布式电源接入配电网对系统灵活性要求越来越高。基于交直流混合配电网的高灵活性和高可控性,提出了一种考虑灵活性的交直流混合配电网储能双层规划方法。首先,分析系统灵活性需求与灵活性资源运行特性,建立系统灵活性评估指标;然后,采用K-means聚类算法建立配电网中分布式电源和负荷的典型运行场景集合;其次,建立考虑灵活性的交直流混合配电网储能双层规划模型,上层以其年综合成本最小为优化目标,下层以其综合运行成本最少和系统运行灵活性最优为目标,采用非线性化主成分分析法,并结合遗传算法求解规划模型。最后,基于改进IEEE 33节点配网系统验证双层规划模型和储能最优配置方案的合理性与有效性。The AC/DC hybrid distribution network has the characteristics of high flexibility and high controllability, and will be widely used in the future distribution network. A two-level planning method for energy storage in AC/DC hybrid distribution network considering flexibility is proposed in this paper. Firstly, this paper analyzes the flexibility requirements in the AC/DC hybrid distribution network and the operating characteristics of the flexible resources considered, and then establishes a quantitative calculation index to measure the flexibility in the operation of the distribution network. Then, K-means clustering algorithm is used to establish the collection of typical operation scenarios for the output and daily load of distributed power generation in distribution network. Secondly, a two-level planning model for energy storage in AC/DC hybrid distribution network is established, which takes into account flexibility. The goal is to minimize the comprehensive operation cost of the distribution network and the optimal level of system flexibility, and the genetic algorithm is used to solve the optimal planning scheme. Finally, on the basis of the improved IEEE 33-node distribution network system, the rationality and effectiveness of the two-level planning model and the optimal configuration of energy storage are verified.

关 键 词：交直流混合配电网 灵活性 双层规划 遗传算法 非线性化主成分分析法 

分 类 号：TM731[电气工程—电力系统及自动化]