电力系统自动化2025，Vol.49Issue(7)：91-102,12.DOI:10.7500/AEPS20240413002
考虑多目标全场景的大规模光伏集群送端系统无功优化配置
Optimal Configuration of Reactive Power for Large-scale Photovoltaic Cluster Sending-end System Considering Multiple Objectives and All Scenarios
摘要
Abstract
Large-scale photovoltaic(PV)clusters collects through multi-level AC transmission lines and transmits via flexible DC lines.They face the challenges such as long-distance transmission,frequent power flow fluctuations,and the lack of support from conventional synchronous power sources.The reactive power generation configuration becomes one of keys to ensure the stable operation of systems.Based on this,aiming at the sending-end system of large-scale PV clusters without synchronous power source support,the optimal configuration problems of reactive power compensation in substations at all levels in a multi-voltage level,high-capacity,long-distance AC transmission system are studied.To meet the requirements for the all-scenario adaptability of reactive power sources in reactive power planning,an envelope-based scenario set extraction method of the representative days is proposed,and a scenario decomposition and combination method is adopted to form a reactive power optimization and compensation sequence of the representative days quickly.Additionally,to improve the dynamic regulation capability of the system after disturbances,a multi-objective optimization model that considers the reactive power-voltage control margin of converter stations is proposed.Addressing the switching-state coupling issues of static reactive compensation devices caused by the fluctuations in the power output sequence of renewable energy,a dynamic clustering smoothing(DCS)method for grouping the configuration of reactive power compensation is proposed.Finally,the case verification is conducted on a practical large-scale PV sending-end system in the western region of China,and the verificaiton results demonstrate that the proposed method can comprehensively cover all the reactive power-voltage demands of operation scenarios and effectively improve the system stability while significantly reducing the computational complexity,and has good generality and efficiency.关键词
光伏集群/送端系统/无功优化配置/静态无功补偿/动态聚类平滑/场景分解与组合/新能源Key words
photovoltaic cluster/sending-end system/optimal reactive power configuration/static reactive power compensation/dynamic clustering smoothing/scenario decomposition and combination/renewable energy引用本文复制引用
蔡锱涵,管霖,张野,唐王倩云,黄磊,胡诗俊..考虑多目标全场景的大规模光伏集群送端系统无功优化配置[J].电力系统自动化,2025,49(7):91-102,12.基金项目
国家自然科学基金资助项目(U22B6007) （U22B6007）
中国南方电网有限责任公司科技项目(ZBKJXM20232278). This work is supported by National Natural Science Foundation of China(No.U22B6007)and China Southern Power Grid Company Limited(No.ZBKJXM20232278). （ZBKJXM20232278）
