最优化技术在海上风电规划与电力市场定价中的应用

ApplicationofOptimization Techniquesin Offshore Wind PowerPlanningand ElectricityMarket Pricing FengGao TsinghuaSichuan EnergyInternetResearchInstituteNov.022024 Evaluationand PlanningfortheCarryingCapacityofLarge ScaleOffshore WindPowerintheReceivingGrid 1.Background Rapid development of offshore wind power:By the end of 2o22,the total installed capacity ofoffshore wind powerinthe world reached 57.6GW,andthe cumulative installed capacityofoffshorewindpowerinChinareached25.6GW. Thekeyareaof offshorewindpowerdevelopment inChina:Bytheendof2022,Jiangsuhadatotal installedcapacityof 11.8GW,rankingfirst.By2025,the installedcapacityofoffshorewindpowerin East China willfurther increase to 32.2GW,and the annual powergeneration will exceed 90 billionkWh. 2.Technical Difficulties Lackofefficientanalysismethodsforstudyingwide-bandoscillationcharacteristics between offshorewindgenerationand thereceiving grid The interaction between offshore wind farms and the receiving AC grid iscomplex, and the risk of wide-band oscillation of the power grid is aggravatedso it is necessary to evaluate it in the planning stage; Lack of comprehensiveand systematic assessmentand planning schemesforoffshorewindpowercarrying capacity Thetraditional planning methodologyevaluates the carrying capacityof windpower with some typical & deterministic scenarios, but lacks ofcomprehensive researchontheinteraction between wind generation andthereceivingpowergrid; Traditional planning schemes often use strengthening the grid as the maindilemma of diminishing marginal benefits of investment with offshore windincreasing. 3.ResearchTopics Fastfrequencyscreeningmethodologyforsystemwide-bandoscillationcharacteristics Theevaluationand planningmethodologyfor carryingcapacity ofreceivingpower gridwithlarge-scale offshorewind powerpenetration Forplanningscenarios,thewide-band characteristicsoftheoffshorewindpower and the receiving power grid are analyzed bythe electromagnetictransient simulationandfastfrequency screeningalgorithm. Comprehensive assessment strategy for the carrying capacity ofoffshore windpower Establisha mathematical modelthat comprehensively considers,such asflexibilityof thermal powerunits,newtransmission element, stabilitycriteriasystem wide-band frequency characteristics, to evaluate the carryingcapacity of the receiving power grid for offshore wind. Increaseflexibilityofthermalpowerunits.Heat&Powerdecoupling,Coordinatedcontrolsystemoptimizationetc. 3.1AComprehensivePlanningModel Objective: Minimize the total cost-building convertor station for offshore wind integration, building newtransmission elements,andrenovatingthermalpowerplantsfordeeppeakshaving:Constraint:Considertheconstraintsofoffshorewindpoweraccessiblestations,network expansion limits,thermal plantsflexibilitylimits,windpowerabandonedrate,powerflowequation(pre/afternetworkupgrade),security;Decision Variable:Selection ofoffshorewind generationaccessible sites,newtransmissionelementsquantityand location,thermalunits'additionalcapacityforpeakshaving; Probabilistic securityassessmentandaccessiblestationoptimization Step1:BasePlanningModel 3.1Result For Jiangsu,themodel gives the planning and optimization plans for offshore wind farms,transmission elementsupgrade,andthermal plants'flexiblerenovation.JiangsuPowerGridconsidersincreasingoffshorewindpowercapacitybyabout5.6GW,totallyabout17GWby2025. 江苏射阳100万干瓦海上风电项目获核准 Morkets to Watch China rinduatrial boses (key provinces ond ctes) 致敬伟大的时代和一路同行的你 2023年9月25日，国制阳100万下直上风电日依准：这8江苏海上老速新能有限公司今年数得的量型价限得 温房，也量江然“十四五“期族准的角一个海上风电货日，项日的族准标志看龙界电力在项口量芯源电力温的单体票量器大的海上风电项口，是江影品极的票一个中价需上风单上风电班模化开能方面文通出了学文一步， 1000MW，配费速设两密220kV海上开压站和家220kV能上第控中心风电机8发出电用通通成m用60km2话区中心西用e65km港-9m-20m费机客的35kVEmDA用上B，841220kV用EmA220kV上用心 推限诊预用已进行的招，中国电理器用华东西彩设计明究服有用公品成动中标PC总限包工程：西受品源有限公司务负责会付风力发电机明设备（高备商）华电第工图份有用公司，天净港航工程有限公司将分别免房风机基制作，典工及风机序装一标级、二标级：江芯专通高压%有限公尚负准220kV，35kV编及时样设需量购 换下来，通公将重点照进正事批夏意见和报决批复，全力以是学取量日开工 3.2CarryingCapacityAssessmentModel Carrying CapacityAssessmentModel Planning Model Carrying Capacity Assessment Model isNonlinearandDiscrete;Proposed solutions are: Bi-section and“ExactLinearizationofMINLPintoMILP Given the forecastingamount of offshore windinjection,powerthealgorithmgivestheoptimalplanning decisions withthemosteconomiccost. Giventhebudgetofgridexpansion,themaximumoffshorewindpower carrying capacity ofthereceivinggridiscalculated. Method1Bi-section:Performmultipleroundofsimulationcontinuously Theplanningmodelismaintained.Theamountofoffshorewindpoweriscontinuouslyvaried,theminimumcapacity"curveisplotted. Method2MILP:"Exact"LinearizationofMINLP By addinga series of“auxiliary"constraints,the originalmixed integernonlinearmodelof“carrying capacityoptimization"can be linearized and the targetcarryingcapacitycanbedirectly obtained. 3.2CarryingCapacityAssessmentModel Method 1: Bi-section Given that theplanning model remainsunchanged, the amount of offshore windpoweris continuouslyvaried and theminimumpl