文档名：计及多重差异的交直流混合多能微网多时间尺度优化调度
摘要：近年来,可再生能源发电、热电联产、储能和电力电子变压器(PET)等技术发展迅速,有利于构建多能互补、清洁高效的交直流混合多能微网(MEMG),但不成熟的PET模型和复杂的不确定性为系统的优化调度带来了挑战.为此,首先构建了一种基于三级式PET的交直流混合MEMG结构,建立了包括PET在内的设备模型和不确定性模型;其次,提出了计及多重差异的MEMG多时间尺度优化调度策略,明确了日前-日内-实时三时间尺度调度的协调机制,其中,多重差异包含需求响应资源、系统调度目标和源荷预测精度在时间尺度上的差异,以及不同能量的响应特性差异;再次,建立了对应的多时间尺度优化调度模型,包括日前鲁棒机会约束优化模型、日内随机优化模型和实时分层滚动修正模型,并在日前调度中,改进了传统储能和电热耦合设备的备用模型,设计了基于PET的交直流系统备用共享机制,将调度模型转换为混合整数线性规划模型,给出了利用CPLEX求解器求解多时间尺度调度模型的步骤;最后,通过算例分析表明,所提调度策略可以通过逐级修正调度计划应对不确定性,且所设计备用方案兼具可靠性和灵活性.
Abstract：Inrecentyears,technologiessuchasrenewableenergygeneration,combinedheatandpower,energystorage,andpowerelectronictransformer(PET)havedevelopedrapidly,whichisconducivetoconstructamulti-energycomplementary,clean,andhigh-efficiencyAC-DChybridmulti-energymicrogrid(MEMG)system.However,immaturePETmodelsandcomplexuncertaintiesbringchallengestoitsoptimalscheduling.Somemulti-time-scaleoptimalschedulingmethodsarepresentedtoachievethesafeandeconomicoperationoftheMEMGunderuncertainties.Butthedifferencesofthedemandresponseresourcesandthegenerationandloaduncertaintiesindifferenttimescales,andtheenergyresponsecharacteristicdifferencearenotfullyconsideredintheseschedulingmodels.Furthermore,whenthereserveallocationmethodisusedtodealwiththeuncertainties,thereservemodelsofenergystorageequipmentandelectrothermalcouplingequipmentareunsatisfactory.Therefore,thispaperaimstoproposeamulti-time-scaleoptimalschedulingmodelconsideringmultipledifferencesfortheAC-DChybridmulti-energymicrogridwiththeemploymentofPET,andimprovethereservemodelsofitsinternalequipment.Firstly,anAC-DChybridMEMGstructurewithathree-stagePETisconstructed,andthemodelsofthedevicesincludingPETandtheuncertaintiesareestablished.Secondly,themulti-time-scaleoptimalschedulingstrategyoftheMEMGisproposed,whichconsidersthemultipledifferences,includingthedifferencesofdemandresponseresources,systemschedulingobjectivesandpredictionaccuracyofgenerationandloadsindifferenttimescales,andthedifferenceofenergyresponsecharacteristic.Thecoordinationmechanismoftheday-ahead,intradayandreal-timeschedulingispresentedbytheproposedstrategy.Then,thecorrespondingmulti-time-scaleoptimalschedulingmodelisestablished,whichincludesday-aheadrobustchance-constrainedoptimizationmodel,intradaystochasticoptimizationmodelandreal-timehierarchicalrollingmodificationmodel.Intheday-aheadscheduling,thereservemodelsoftraditionalenergystorageandelectrothermalcouplingequipmentareimproved,andthereservesharingmechanismofACandDCsystemsbasedonthePETisdesigned,andtheschedulingmodelistransformedintoamixed-integerlinearprogrammingmodel.Intheintradayscheduling,themixedtimeresolutionschemeisadoptedtoreducereal-timeadjustmentpressure.Inaddition,thedetailedstepsofsolvingthemulti-time-scaleoptimalschedulingmodelwithCPLEXsolveraregiven.Finally,thefeasibilityandeconomyoftheproposedschedulingstrategy,aswellasthereliabilityandflexibilityofthedesignedday-aheadreservescheme,areverifiedbyacasestudy.Thefollowingconclusionscanbedrawnfromthesimulationanalysis:(1)Theimplementoftheday-ahead,intradayandreal-timeschedulinginsequencecanobtainaneconomicalandreasonableschedulingscheme.Thedemandresponsestrategiesunderdifferenttimescalescanfurtherpromotethebalancebetweensupplyanddemand,andreduceschedulingcosts.(2)Theproposedreserveallocationmethodcanensureenergysupplyreliabilityundertheextremescenario,andachievetheflexiblechoiceoftheriskpreferenceaccordingtothedecisionmaker'sdemand.(3)Theinfluenceofgenerationandloaduncertaintiescannotbeignoredintheday-aheadorintradayscheduling.Boththeday-aheadreserveallocationandintradaystochasticoptimizationstrategiescanreducethereal-timemodificationcostcausedbythefluctuationsofrenewableenergygenerationandloaddemands.
作者：蔡瑶 卢志刚 潘尧 何良策 周长磊 Author：CaiYao LuZhigang PanYao HeLiangce ZhouChanglei
作者单位：燕山大学电力电子节能与传动控制河北省重点实验室秦皇岛066004济宁曲阜机场有限公司济宁272000
刊名：电工技术学报 ISTICEIPKU
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(11)
分类号：TM732
关键词：电力电子变压器 交直流混合多能微网 多重差异 多时间尺度优化调度
Keywords：Powerelectronictransformer AC-DChybridmulti-energymicrogrid multipledifferences multi-time-scaleoptimalscheduling
机标分类号：TM73TM41TP391.9
在线出版日期：2024年6月18日
基金项目：国家自然科学基金，河北省高等学校科学技术研究项目计及多重差异的交直流混合多能微网多时间尺度优化调度[
期刊论文] 电工技术学报--2024, 39(11)蔡瑶 卢志刚 潘尧 何良策 周长磊近年来,可再生能源发电、热电联产、储能和电力电子变压器(PET)等技术发展迅速,有利于构建多能互补、清洁高效的交直流混合多能微网(MEMG),但不成熟的PET模型和复杂的不确定性为系统的优化调度带来了挑战.为此,首先构建了...参考文献和引证文献
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