风–光可再生能源场站群分层分区并网规划方法  

Planning Method for Layered and Partitioned Integration of Wind-Solar Renewable Energy Clusters

作　　者：袁振华 刘晓明 曹永吉 张恒旭[2] 杨金叶 田鑫 YUAN Zhenhua;LIU Xiaoming;CAO Yongji;ZHANG Hengxu;YANG Jinye;TIAN Xin(Economic and Technological Research Institute,State Grid Shandong Electric Power Company,Jinan 250021,Shandong Province,China;Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education(Shandong University),Jinan 250061,Shandong Province,China)

机构地区：[1]国网山东省电力公司经济技术研究院,山东省济南市250021 [2]电网智能化调度与控制教育部重点实验室(山东大学),山东省济南市250061

出　　处：《现代电力》2023年第5期660-668,共9页Modern Electric Power

基　　金：国家自然科学基金资助项目(52177096);国网山东省电力公司科技资助项目(5206002000QD)。

摘　　要：在碳达峰、碳中和目标的驱动下,风电、光伏等新能源发电快速发展,大规模、集群化和分层分区并网是重要的发展方向。针对新能源大规模并网造成的电力系统潮流波动和电压偏移等问题,提出一种风–光新能源场站群分层分区并网规划方法。考虑电网拓扑结构和输电线路阻抗,基于图论对电网进行分区,构建包含电压偏移、潮流波动和经济运行指标在内的新能源接入电网多指标评估体系,以弃风弃光量最小为目标建立新能源分层分区并网规划模型。采用交流潮流二阶锥近似方法对模型进行简化,求解各项评估指标,结合TOPSIS综合评价法对所有可行方案进行评估,确定最优接入方案。最后,以IEEE 39节点系统为基础算例,验证了所提规划方法的有效性和实用性。Driven by achieving the target of carbon peak and carbon neutrality,such new energies as wind power and photovoltaic(abbr.PV)generation rapidly develop,and large-scale,clustered,partitioned and stratified grid connection become the key development direction.In allusion to power system power flow fluctuation and voltage excursion due to large-scale grid-connection of new energy,a layered and partitioned grid-connection planning method for wind and PV power station clusters was proposed.Considering the topology of power grid and the impedance of transmission lines,based on the graph theory the power grid was partitioned,and a multi-indices assessment system to connect new energy into power grid,in which the voltage excursion,power flow fluctuation and the indices of economic operation were included,was constructed.Taking the minimized curtailment of wind power and PV power as the objectives,a layered and partitioned grid-connection planning model for new energy was established.The estab-lished model was simplified by the second-order cone approx-imation method of AC power flow,thus each assessment index was solved,and combined with TOPSIS comprehensive evalu-ation method all feasible schemes were assessed to determine the optimal grid-connecting scheme.Finally,using IEEE 39-bus system as computing example,both effectiveness and practic-ability of the proposed planning method are verified.

关 键 词：可再生能源 分层分区 电压偏移 潮流波动 并网规划 

分 类 号：TM72[电气工程—电力系统及自动化]