第47卷第2期电网技术Vol.47No.22023年2月PowerSystemTechnologyFeb.2023文章编号：1000-3673（2023）02-0423-12中图分类号：TM721文献标志码：A学科代码：470·40考虑负荷特性的区域电网在线转动惯量快速估计算法曾辉1,2，苏安龙3，葛延峰3，陈晓东3，李正文3，王顺江3，赵鹏3，李卫东1（1．大连理工大学电气工程学院，辽宁省大连市116024；2．国网辽宁省电力有限公司电力科学研究院，辽宁省沈阳市110006；3．国网辽宁省电力有限公司，辽宁省沈阳市110006）FastEstimationAlgorithmforOn-lineMomentofInertiaofRegionalPowerGridConsideringLoadCharacteristicsZENGHui1,2,SUAnlong3,GEYanfeng3,CHENXiaodong3,LIZhengwen3,WANGShunjiang3,ZHAOPeng3,LIWeidong1(1.SchoolofElectricalEngineering,DalianUniversityofTechnology,Dalian116024,LiaoningProvince,China;2.ElectricPowerResearchInstituteofStateGridLiaoningElectricPowerCo.,Ltd.,Shenyang110006,LiaoningProvince,China;3.StateGridLiaoningElectricPowerCo.,Ltd.,Shenyang110006,LiaoningProvince,China)1ABSTRACT:Thesystemmomentofinertiaresourcesisbecomingincreasinglyscarcewiththecontinuousincreaseoftheproportionofrenewableenergycapacity.Itisnecessarytoaccuratelyestimateittoprovideagoodbasisfortheoperationanalysis.Themomentofinertiaofapowersystemiscomposedofthepowergenerationsideoneandtheloadsideone.Themomentofinertiaatthepowergenerationsidecanbeaccuratelyobtainedbystatistics,whiletheoneattheloadsideisdifficulttoobtainduetoitslargenumberanddispersion.Startingfromtheanalysisoftheloadsideinertiamechanism,throughtheanalysisoftheloadpowerandthevoltagechangeratebeforeandafterthedisturbance,theequivalentinertiacharacteristicsoftheconstantimpedance,thesynchronousmotorandtheasynchronousmotorloadaretheoreticallydeducedinthewayofthedisturbancemethod.Then,theinertiacharacteristicsofvariousloadsareclarifiedandanon-linefastestimationoftheoverallmomentofinertiaofthesystemconsideringtheinertiacharacteristicsofbothsidesofthesourceloadisproposed.Thesimulationanalysisverifiesthecorrectnessoftheanalysisconclusionoftheloadsideinertiacharacteristics.Basedonthemeasureddataoftwofrequencyfluctuationev...
