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时间:2020-05-04
《德宝直流系统与宝二扩建机组SSO仿真分析-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第51卷第16期振模电测与仪表Vo1.5lNO.162014生8月25日ElectricalMeasurement&InstrumentationAug.25,2014德宝直流系统与宝建机组SSO仿真分析张功望1王渝红2,,张超,杨东斌,左坤,欧林(1.陕西省电力公司检修公司,西安710065;2.四川大学电气信息学院,成都610065)摘要:针对德宝~500kV高压直流输电系统可能引起附近汽轮发电机组次同步振荡(sso)的问题,采用机组作用系数法(uiv)和复转矩系数法对宝鸡换流站附近汽轮发电机组进行风险评估。运用综合程序(PSASP)计算了典型运行方式下宝鸡换流站换流母线的短路
2、容量,由机组作用系数法(UIF)分析得出宝二扩机组不会产生次同步荡。鉴于冬小孤岛运行方式下的U~FSH对较大,进而利用复转矩系数法在PSCAD/EMTDC中搭建电磁暂态仿真型进行时域仿真校验,复转矩系数法时域仿真得到的结论与机组作用系数法一致。文中分析对于直流输电系统送端引起附近二火电机组间的次同步振荡问题具有参考价值。关键词:高压直流输电系统;次同步振荡;机组作用系数法;复转矩系数法;孤岛运行中图分类号:TM扩714.3文献标识码:A文章编号:1001—1390(2014)16—0031—06SimulationAnalysisonSub-SynchronousOscillati
3、onbetweenBaojiNo.2PowerPlantExtensionUnitandDe-BaoHVDCSystemZHANGG。ng—wang,WANGYu-h。ng,ZHANGCha。,YANGDong-bin,ZUOKun,OULin(1.MaintenanceCompanyofShaanxiElectricPowerCorporation,Xi’an710065,China.2.SchoolofElectricalEngineeringandInformation,SichuanUniversity,Chengdu610065,China)Abstract:Aiming
4、attheproblemofthesteamtubinegeneratorunitsub——synchronousoscillationcausedbyDe—-Bao~500kVdirectcurrenttransmissionsystem,aunitinteractionfactormethodandcomplextorquecoeficientmethodareadoptedtorealizeriskassessmentforturbine—generatorunitnearBaliconvertorstation.Theshort—circuitcapacitiesunder
5、typicaloperationmodesatBaojiconverterstationACbuswillbecalculatedusingPSASPprogram,andtheUIFshowsthatBaojiNo.2powerplantextensionunitdoesn’tproducesub—synchronousoscillation.SincetheUIFofislandoperationmodeinwinter—basecaseisrelativelylargetoothers,complextorquecoeficientmethodisusedtoperformt
6、ime—domainsimulationforverificationusingelectromagnetictransientsimulationmodelinPSCAD/EMTDC.Theresultsobtainedfromtime—.domainsimulationareconformedtotheresultsfromtheunitinteractionfactormethod.Theanalysisinthispaperwillbeusedasthereferencetosub-synchronousoscillationproblemresultedfromthedi
7、rectcurrenttransmissionsystemandpowerplantunitsnearby.Keywords:HVDCtransmissionsystem,sub—synchronousoscillation,unitinteractionfactor(UIF),complextorquecoeficientmethod,isolatedislandoperation0引言能性一。国内高岭换流站在联调时绥中发电厂机组宝鸡换流站是是国内首座交流750kV
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