基于混杂系统的交直流混联系统轨迹灵敏度分析#单节杉,束洪春,董俊,吕蕾,王岩*51015202530354045(昆明理工大学电力工程学院)摘要:基于混杂系统电力系统的动态行为,虽然适用于处理任意复杂的模型,但是其需要每进行一次仿真,仿真结果都只是针对系统行为的一种场景。因此仿真方法获得的结论并不是非常充分的,即使在系统条件发生了一个很小的变化,仿真结果用系统变化之前的动态来近似都可能产生很大的误差,因此系统参数或条件每发生一次变化,就需要重新进行一次仿真,对电力系统这样大规模的复杂系统,用仿真分析方法来分析各种因素对其动态行为造成的影响,计算费用是相当大的。因此在此本文提出使用轨迹灵敏度分析(或称参数灵敏度分析)为大规模复杂系统仿真提供了理论分析基础,可以大大减少仿真次数,这里详细地分析了混杂系统轨迹灵敏度理论,推导了轨迹灵敏度的计算过程,对混杂电力系统离散事件和参数变化时系统状态轨迹。关键词:混杂系统;仿真;灵敏度分析中图分类号:TM603TrajectorySensitivityAnalysisinAC/DCTransmissionSystemmodelbasedonHybridSystemSHANJieshan,SHUHongchun,DONGJun,LVLei,WANGYan(KunMingUniversityofscienceandtechnology)Abstract:Hybridsystemtheorycanbeusedforpowersystemtostudypowersystemdynamicdescription,analysisandcontrolproblems.ThispaperproposesuseofHybridsystemtheory,Petrinetmethodtopowersystemequipmentastheobject,modelingthehierarchicalstructureofhybridpowersystemandtheelementsofpower,inordertobuildYunnan—Guangzhou±800kVUHVAC/DCHybridTransmissionAbstract:Thedynamicbehaviorofpowersystembasedonhybridsystems,althoughapplicabletohandleanycomplexmodel,butitneedstobeeverysimulationandresultsarejustasceneforthebehaviorofthesystem.Sothesimulationmethodtoobtaintheconclusionisnotveryadequate,eveninasmallsystemconditionschange,thesimulationresultsusingdynamicsystembeforethechangetoapproximatemayresultingreaterrors,sothesystemparametersorconditionsforeverychange,itisnecessarytore-conductasimulation,suchlarge-scalecomplexsystemsofpowersystemswithsimulationanalysismethodtoanalyzetheinfluenceofvariousfactorsonthedynamicbehavioroftheresultingcalculatedcostsareconsiderable.Thereforethispaperproposesuseoftrajectorysensitivityanalysis(orparametersensitivityanalysis)providesthetheoreticfoundationforthelarge-scalecomplexsystemsimulation,whichcangreatlyreducethenumberofsimulation,hereadetailedanalysisofthehybridsystemtrajectorysensitivitytheory,derivedtrajectorysensitivitycalculationprocess,andwhendiscreteeventsandparameterchangethesystemstatetrajectoryforhybridpowersystems。Systemmodel.FusionoftheAC-DChybridPetrinetsasamodelsystem,thepaperhasputforwardamethodthatcombinesPetriNetandExpertSystem,andusesPetriNetasthereasoningmechanismofexpertsystem.Theproposedmethodhasimprovedefficiencygreatlyandcreatedconditionsforrestoringpowersupplyassoonaspossible,improvingthelevelofsafeoperationofpowersystemtothegreatestextent,providinganewwayforanalysing,evaluating,andimprovingthesafetyoflargeinterconnectedpowersystem.Keywords:Hybridsystem;Simulation;SensitivityAnalysis基金项目:高等学校博士学科点专项科研基金(20105314110001)作者简介:单节杉,1979年出生,男,讲师,电力系统保护及控制.736495310@qq.com-1-。因此,分析离散事件发生前后的轨迹灵敏度在初始时刻t0,混杂系统的初始动态由初始模式的动态方程描述RnxRRnuRpRRnx描述了混杂系统初始模式的连n续动态行为::RRnxRRnuRpRRnx为初始模式的复位映射,用nx)nxny指存在初值x0、x0、y0使方程组(1-1)(1-2)(1-3)的解存在。x(1)0t...