文档名：全国统一电力市场演进过程下省间省内市场出清及定价模型
摘要：为了促进电力资源在省间的余缺互济和在全国范围内的优化配置,我国正有序推进电力市场改革,逐步实现省间-省内市场的耦合和全国统一市场的演进.根据省间-省内市场耦合程度的不同,该文将演进过程划分为三个阶段:分层阶段、松耦合阶段和紧耦合阶段.进一步考虑跨区、跨省以及省内输电的输电费回收问题,跨区直流输电线路与区域内交流输电线路按照传输电量收费,省内线路按照用户负荷用电量收费.构建了面向不同输电费收取方式的出清模型与定价机制,分层阶段采用顺序出清,松耦合阶段采用双层迭代出清,紧耦合阶段采用统一出清,定价机制均采用节点电价定价机制.最后,利用IEEE39节点和118节点系统进行仿真计算,验证了出清模型和定价机制的有效性,并分析了输电费对出清和定价结果的影响.
Abstract：Atpresent,China'sinter-andintra-provincialmarketsystemisstillinitsinfancy,andmarketmechanisms,operationmethodsandclearingmodelsareyettobeexplored.Thecommonlyusedmodelingapproachesintheexistingliteratureincludepath-basedandsensitivity-basedoptimalclearingapproaches.Thepath-basedapproachincreasesthedimensionalityofdecisionvariablesinthehigh-lowmatchingdiscountingprocess,resultinginalargemodelsize.And,thesensitivity-basedapproachadoptsanintegratedclearingmethodbutdoesnotprovideanapplicablepricingmechanism.Toaddresstheseissues,thispaperconstructsasensitivity-basedinter-andintra-provincialelectricitymarketclearingmodelthatconsidersdifferentwaysofcollectingtransmissionfees.Furthermore,thenonlinearityintroducedbythetransmissionfeesislinearizedandthelocationalmarginalprice(LMP)methodisusedtosolvetheproblemofunclearpricingofthesensitivity-basedmodel.China'stransmissionlinesincludeinter-regionaltransmissionlines,intra-regionalinter-provincialtransmissionlinesandintra-provincialtransmissionlines.Theirtransmissionpricingmechanismsareintroducedandtheirimpactonthesupplyanddemandbalanceintheelectricitymarketareanalyzed.Astheevolutionofthenationalunifiedelectricitymarket,theinter-andintra-provincialelectricitymarketwillgothroughthreestagesofbi-levelstage,loosely-coupledstageandtightly-coupledstage.Thedegreeofcouplingbetweeninter-provincialandintra-provincialmarketsvariesatdifferentstages,withthelowestdegreeofcouplingatthebi-levelstageandthehighestdegreeofcouplingatthetightly-coupledstage.Theclearingmodelandthepricingmodelwereconstructedforthethreestages.AndtheproposedpricingmechanismderivesthepriceforeachnodeadoptingtheLMPmethod,whichhasgoodcharacteristicssuchasincentivecompatibilityandnon-discrimination.Toverifytheeffectivenessoftheproposedclearingmodelandpricingmodel,simulationswereconductedintheIEEE39-busand118-bussystems.Theclearingresultsshowthatthesocialwelfareinthebi-levelstage,loosely-coupledstage,andtightly-coupledstageis27028061￥,30543641￥,and31874432￥,respectively.Also,thetransmissionpowerofcross-regionaltie-linesisthehighestinthetightly-coupledstageindicatinghighutilizationofthecross-regionaltie-lines.Besides,thepricingresultsshowthattheimbalancefundsinthebi-levelstage,loosely-coupledstage,andtightly-coupledstageare2801963￥,2051259￥,and0￥,respectively.And,thepriceateachnodeisdifferentduetothetransmissionfeesofintra-regionalinter-provincialACtie-lines.Further,theimpactoftransmissionfeesonclearingresultsandpricingresultswasanalyzed.Asthetransmissionpriceofinter-regionaltransmissionlinesincreases,boththetransmissionvolumeandsocialwelfaredecrease,andtheaveragepriceinthereceivingprovincesincreaseswhiletheaveragepriceinthesendingprovincesdecreases.Asthetransmissionpriceofintra-regionalinter-provincialtransmissionlinesincreases,thedifferenceinelectricitypricesbetweenthenodesbecomesmorepronounced.Assumingthattheintra-provincialtransmissionpriceinboththesendingandreceivingprovincesdecreasesby10￥/(MW·h),thebidsforgeneratorsandloadsinthesendingprovincesincreaseby456MW·hand481MW·h,respectively,whilethebidsforgeneratorsandloadsinthereceivingprovincesincreaseby3804MW·hand3781MW·h,respectively.Thefollowingconclusionscanbedrawnfromthesimulationanalysis:(1)Inter-provincialtransmissioncanincreasesocialwelfareandpromoteoptimalresourceallocation.Andthetightly-coupledstageclearingisbestabletomaximisesocialwelfare.(2)TheproposedpricingmechanismremainsapplicablewhenconsideringmultipletransmissionfeesandhastheadvantagesofLMP.Andthepricingmechanismprovidesareasonablepricingmethodologyforsensitivity-basedclearingmodels.(3)Transmissionfeeschargedaccordingtotheactualpowerflowoftransmissionlinesresultinadifferentialpriceateachnode.Thesensitivityofthenodetothelineinthesamedirectionasthepowerflowwillresultinalowerpriceforthenode,andviceversa.
作者：陈熠 王晗 严正 冯凯 刘子杰 Author：ChenYi WangHan YanZheng FengKai LiuZijie
作者单位：电力传输与功率变换控制教育部重点实验室上海交通大学上海200240;上海非碳基能源转换与利用研究院上海交通大学上海200240中国电力科学研究院有限公司南京210037
刊名：电工技术学报
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(7)
分类号：TM732
关键词：省间-省内电力市场 输电费 出清模型 定价模型 松耦合阶段
Keywords：Inter-andintra-provincialelectricitymarket transmissionfee clearingmodel pricingmodel loosely-coupledstage
机标分类号：TM73F123.9TM315
在线出版日期：2024年4月12日
基金项目：国家电网有限公司总部科技项目全国统一电力市场演进过程下省间-省内市场出清及定价模型[
期刊论文] 电工技术学报--2024, 39(7)陈熠 王晗 严正 冯凯 刘子杰为了促进电力资源在省间的余缺互济和在全国范围内的优化配置,我国正有序推进电力市场改革,逐步实现省间-省内市场的耦合和全国统一市场的演进.根据省间-省内市场耦合程度的不同,该文将演进过程划分为三个阶段:分层阶段...参考文献和引证文献
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