Impacts of Large-scale Wind Power Grid Integration on Relay Protection and Countermeasures.pdf

第 36卷 第 8期 电 力 系 统 自 动 化 Vo1．36 No．8 2012年 4月 25 日 Automation ofElectricPowerSystems Apr．25，2012 DOI：10．3969／j．issn．1000—1026．2012．08．025 ImpactsofLarge’scaleW indPowerGridIntegrationon RelayProtectionandCountermeasures ShienHE ’ ，JialeSU0NAN ，XiaoningKANG ，GuobingS0NG (1．SchoolofElectricalEngineering，Xi’anJiaotongUniversity，Xi’an710049，China； 2．W indPowerTechnologyCenter，GansuElectricPowerCorporation，Lanzhou730050，China) Abstract：Several1arge—scalewind turbine tripping accidentsoccurred in Jiuquan wind powerbase in 2011． Accordingtotheon-sitesurveyandanalysisoftheseaccidentsrelatedtorelayprotection，causeswerefoundtobe thecollectionsystem defectsandlow correctoperationrateofsmallcurrentgroundedlineselectorsoftheunearthed neutralpointcollectionsystem ．ByreferringtoboththecharacteristicsofJiuquanwindpowerbaseandarrangement ofrelayprotection，theshort—circuitfeaturesofwindpowerand itsimpactsonrelayprotectionareanalyzed．The collection system and the retrofit of the small current grounded line selector are improved by specific countermeasures．Finally，furtherresearchsubjectsareputforward． Keywords：windpower；tripping；countermeasure；relayprotection 0 Introduction investment．W 1ndpowerdevelopmentisnotincoordination withthegridexpansion，andwindpowercurtailmentaffects Attheendof2O10，therewasatotalof802windfarms notonly the healthy and sustainable developmentofwind with32 400 wind turbineunitsatan installed capacityof power．butalsothesecurityand