实际报价结算下的灵敏度矩阵消除阻塞的算法.pdf

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1、第32卷第11期高电压技术Voi.32No.112006年11月HighVoitageEngineeringNov.2006·135·实际报价结算下的灵敏度矩阵消除阻塞的算法李林川，赵森林，顾丽梅，杨理（天津大学电气与自动化工程学院，天津300072）摘要：为了保证系统运行的安全性提出了一种基于灵敏度矩阵的阻塞消除算法，在按机组实际报价结算时，针对出现阻塞的支路，形成相应的灵敏度系数矩阵，以调整费用最小为目标函数，整体解决过载支路的阻塞。它以过载支路的过载量和相应的发电机组的灵敏度系数和调整量的乘积形成等式约束，并和目标函数构成拉格朗日函数，采用拉格朗日求极值的方法，通过推导得出各发电机的调整

2、量。整个计算过程只需求解一个线性方程组，计算较为简单快捷。通过对IEEE9和IEEE30节点系统两个算例的计算，验证了所提算法的正确性和有效性。关键词：电力市场；实际报价结算；阻塞管理；灵敏度矩阵；拉格朗日函数中图分类号：TM734文献标识码：A文章编号：1003-6520（2006）11-0135-04EliminatingCongestionAlgorithmBasedonthePractical(uotedPriceSettlementbyAnalyzingtheMatrixofSensitivityLILinchuan；ZHAOSeniin，GULimei，YANGLi（Schooio

3、fEiectricaiEngineeringandAutomation，TianjinUniversity，Tianjin300072，China）Abstract：Thispaperispresentedtostudyhowtopurchaseeiectricityfrompowerpiantswithminimizecostonthepremiseofsatisfyingsecurityconstraints，eiectricenergyguaiityandusers'reguirementsintheGenerationMarket.Thisissuehassometheoreticai

4、andpracticaimeaning.Theobjectiveoftheproposedaigorithmistoeiiminatecongestionwiththeminimaicostofpurchasingeiectricityfrompowerpiants.ItisproposedbasedonthepracticaiguotedpriceandmakeuseoftheMerit-orderMethodtosoivetheUnitCommitmentprobiem.ThefeatureoftheMerit-orderMethodisfastandbrief.Afterwards，Po

5、werDispatchisdeterminedbyadoptingEguaiBiddingPriceMethodconsideringtheimpactofpowerioss.ButthisPowerDispatchmaycauseoverioadinginiinesortransformers（ItiscaiiedCongestionunderPowerMarketcondition）.Toensureamorese-curepowersystem，congestionmustbeeiiminated.Anaigorithmofeiiminatingcongestionbaseonthema

6、trixofsensitivityisproposedinthispaper.Theaigorithmprovidesasoiutionaccordingtoaiitheoverioadingiines.Itseguaiityconstraintsaretheoverioadsofthebranchesandthesummationofthesensitivityoftheeiementmuitipiyingcorrespondingadjustment.Itsine-guaiityconstrainsaretheupperandioweriimitsoftheunits.Theaigorit

7、hmusethemethodoffindingextremevaiueofLa-grangianfunctionandtheadjustmentofeachunitcanbeobtainedbysoivingaiineareguationsetoniy，thecaicuiationisfastandsimpie.Theresuitsofthecaicuiationexampieofthesyste