电力系统及其自动化学报ProceedingsoftheCSU-EPSA第35卷第4期2023年4月Vol.35No.4Apr.2023水电机组并网功率振荡分析和暂态过程验证熊鸿韬1，林进钿1，楼伯良1，项俊猛2（1.国网浙江省电力有限公司电力科学研究院，杭州310014；2.浙江浙能北海水力发电有限公司，杭州310020）摘要：针对浙江省内某水电机组准同期并网后的大幅度有功功率振荡事件，进行了振荡特性的理论分析和验证。结合机组同期并网暂态过程及并网功率振荡的理论，分析了并网电压差、相角差、频差的影响，并在实际电网中进行了试验验证。试验表明机组准同期并网后功率振荡主要是由频差造成，有功功率振荡的峰峰值和并网频差存在较为显著的比例特征。最后，在PSCAD中验证了频差并网后功率振荡的暂态过程机理。关键词：准同期并网；有功功率振荡；事件分析；暂态过程；试验验证中图分类号：TM712文献标志码：A文章编号：1003-8930（2023）04-0026-06DOI：10.19635/j.cnki.csu-epsa.001064PowerOscillationAnalysisandTransientProcessVerificationofHydropowerUnitParallelingXIONGHongtao1，LINJintian1，LOUBoliang1，XIANGJunmeng2（1.ElectricPowerResearchInstitute，StateGridZhejiangElectricPowerCo.，Ltd，Hangzhou310014，China；2.ZhejiangZhenengBeihaiHydropowerCo.，Ltd，Hangzhou310020，China）Abstract:Aimedattheeventoflarge-scaleactivepoweroscillationofahydropowerunitinZhejiangProvinceafterqua⁃si-synchronizationparalleling，thetheoreticalanalysisandverificationofoscillationcharacteristicsarecarriedout.Spe⁃cifically，withthecombinationofthetransientprocessofunitsynchronizationparallelingandthetheoryofparallelpow⁃eroscillation，theparallelinfluencesofvoltagedeviation，phaseangledeviationandfrequencydeviationareanalyzed，whichwerealsoverifiedbytestsinanactualpowergrid.Itisfoundthattheactivepoweroscillationafterquasi-synchro⁃nizationparallelingismainlycausedbyparallelfrequencydeviation，andthepeak-to-peakvalueofactivepoweroscilla⁃tionandparallelfrequencydeviationhaveobviousproportionalcharacteristics.Finally，thetransientprocessmecha⁃nismofpoweroscillationafterparallelfrequencydeviationisverifiedinPSCAD.Keywords:quasi-synchronizationparalleling；activepoweroscillation；eventanaly...
