计及风电及电动汽车接入影响的配电网风险评估分析-risk assessment and analysis of distribution network considering the influence of wind power and electric vehicle access.docxVIP

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计及风电及电动汽车接入影响的配电网风险评估分析-risk assessment and analysis of distribution network considering the influence of wind power and electric vehicle access.docx

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计及风电及电动汽车接入影响的配电网风险评估分析-risk assessment and analysis of distribution network considering the influence of wind power and electric vehicle access

独接入以及两者同时接入系统造成负荷损失风险影响，对不同容量的风电、不同渗透率下的电动汽车以及不同时段风电和电动汽车共同接入的场景进行了计算，得到当前系统运行状态的风险水平，为风电和电动汽车入网的合理规划提供了重要的理论价值和现实意义。关键词：风电；电动汽车；随机潮流；半不变量；风险评估AbstractInrecentyears,withChinasstrongandsmartgridconstructioncontinuouslypushforwardtheimplementationofthepolicyaswellasenergysaving,newenergytechnologiesbecomeanimportanttrendforthedevelopmentofpowersystem,windpowerandelectricvehicleshasbeenthestrongsupportofthenationaldevelopmentofthepowerindustry.However,withmoreandmorewidespreadapplicationofwindpowerandelectricvehicles,andthenegativeimpacttothepowersystemcannotbeignored.Naturalfluctuationcharacteristicsofwindenergyitselfisrandom,intermittentanduncontrollablecreatingwindpower,windpowerandthegrowingscaleofthenetworkonthegridintermsofarandomperturbationalsoincreasesthereliabilityandsecurityofthepowergrid,bringThethreatisalsogrowing.Electricvehiclebytheuservehiclesusedaswellasenvironmentalimpact,makingtheelectricvehicleasthechargingloadontheuncertaintyofthetimeandspace,theaccessdistributionnetworkoftheelectricvehiclewilllikelyleadtothegridduringperiodsofpeakloadisincreased,sothatthegridoperationbecomescomplicated.Fromthepointofviewoftheurbandistributionnetwork,alarge-scalewindpowerandelectricvehiclesaccessisagreatopportunitytopromotethedevelopmentofthegridtendsefficient,cleanandintelligent,andmoreseverechallenges,thestudywindpowerandelectricvehiclechargingbehavioruncertaintyoftheimpactofthepowersystem,toreducethethreatposedbywindpowerandelectricvehiclesandtheGridwillimprovegridreliabilityandsecurity,andhasaveryimportanttheoreticalandpracticalsignificance.Forwindpowerandelectricvehiclesandthenetworkoftheimpactofthedistributionnetwork,themainanalysisandgridnodevoltageandlineflowtwoaspectsofrisk.First,usingathree-parameterWeibulldistributiondescribetherandomnessofthewindspeed,combinedwiththecharacteristicsofthepoweroutputofthewindturbineandwindturbine-basedinternalsimplifiedequivalentcircuitthePQiterativemodeltobuildwindturbineactiveandreactiveprobabilitydistributionmodel.Thesa