交直流混合配电网网络重构与无功优化协同的两阶段鲁棒优化模型  

A Novel Two-stage Robust Model for Co-optimization of Reconfiguration and Reactive Power in AC/DC Hybrid Distribution Network

作　　者：张旭 么莉 陈晨 方日升 林济铿[4] ZHANG Xu;YAO Li;CHEN Chen;FANG Risheng;LIN Jikeng(School of Electrical and Information Engineering,Tianjin University,Nankai District,Tianjin 300072,China;State Grid Shanghai Pudong Electric Power Supply Company,Pudong District,Shanghai 200120,China;State Grid Fujian Electric Power Research Institute,Fuzhou 350007,Fujian Province,China;College of Electronic and Information Engineering,Tongji University,Jiading District,Shanghai 201804,China)

机构地区：[1]天津大学电气自动化与信息工程学院,天津市南开区300072 [2]国网上海浦东供电公司,上海市浦东区200120 [3]国网福建省电力有限公司电力科学研究院,福建省福州区350007 [4]同济大学电子与信息工程学院,上海市嘉定区201804

出　　处：《电网技术》2022年第3期1149-1159,共11页Power System Technology

摘　　要：随着电力电子技术的快速发展以及直流负荷的增多,交直流混合配电系统成为配电网发展的最新趋势,如何实现其最优运行成为了备受关注的课题之一。文章提出了交直流混合配电网重构与无功优化协同的两阶段鲁棒优化新模型。模型的第一阶段是以综合成本最小为目标对期望场景下的决策变量进行优化,实现期望场景下的最优性。第二阶段则是基于第一阶段确定的整数变量解以及风机、光伏出力与负荷的预算不确定集,对第一阶段做出的连续型决策变量取值进行最优调整,实现最恶劣场景下的可行性。所构建模型为复杂的非线性混合整数优化模型,无法直接求解,采用锥松弛技术与线性化技术将该模型转化为近似的线性化模型,然后采用列与约束生成算法(column and constraint generation,C&CG)求解该线性化模型。算例证明了所构建模型及算法的有效性及正确性。With the rapid development of power electronic technology and the great increase of DC load, the AC/DC hybrid distribution system has become a new trend of distribution network development. How to realize the optimal operation of such a system is becoming one of the most concerned topics. In this paper, a new two-stage robust co-optimization model for AC/DC hybrid distribution network reconfiguration and reactive power is proposed for the first time. The first stage of the model is to optimize the decision variables under the expected scenario with the objective of minimizing the comprehensive operation cost. In the second stage, based on the integer variable solution determined in the first stage as well as the uncertainty set of load and the output of the wind turbine and photovoltaic, the values of the continuous decision variables obtained in the first stage are optimized to realize the feasibility under the worst scenario.The model established is a complex nonlinear mixed integer optimization model, which cannot be solved directly. It is transformed into an approximate linear model with the cone relaxation method and the linearization method, and then solved by the column and constraint generation(C&CG)algorithm. The results of the examples show the validity and correctness of the model and algorithm proposed.

关 键 词：交直流混合配电网 两阶段鲁棒模型 配电网重构 无功优化 锥松弛技术 

分 类 号：TM721[电气工程—电力系统及自动化]