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)02-0510-07中图分类号:TM712文献标志码:A学科代码:470·40考虑不同水电比例的多机系统调速器优化策略杨若朴1,陈亦平1,李崇涛2,张勇1,佘盛景2,肖亮1(1.中国南方电网电力调度控制中心,广东省广州市510663;2.西安交通大学电气工程学院,陕西省西安市710049)OptimizationStrategyofGovernorforMulti-machineSystemConsideringDifferentHydropowerRatiosYANGRuopu1,CHENYiping1,LIChongtao2,ZHANGYong1,SHEShengjing2,XIAOLiang1(1.PowerDispatchingandControlCenterofChinaSouthernPowerGrid,Guangzhou510663,GuangdongProvince,China;2.SchoolofElectricalEngineering,Xi’anJiaotongUniversity,Xi’an710049,ShaanxiProvince,China)ABSTRACT:Ultra-lowfrequencyoscillationsareapttooccurinasystemwithhighproportionofhydropowerformedonthehydropowerDCislandorasynchronousinterconnectionproject,threateningthesafeandstableoperationofthepowergrid.Firstly,thispaperstudiestheinfluenceofthechangesofhydropowerratiosonthedampinglevelinthesystem.Secondly,itanalyzestheselectionandsensitivitycalculationmethodsofthestrongnegativedampingunitsinamulti-machineprimaryfrequencysystem.Finally,theoptimizationstrategyofthemulti-machinesystemgovernorisproposed.Combinedwiththetransientfrequencyindex,thebalancebetweenthestabilityandthespeedoftheprimaryfrequencyregulationindifferenthydropowerproportionalsystemsisrealized,whichprovidesareferenceforengineeringapplications.KEYWORDS:hydropowerratios;primaryfrequencycontrol;turbinegovernorparameters;transientfrequencyevaluationindex摘要:在水电直流孤岛或异步互联工程形成的含高比例水电的大系统中,易发生超低频振荡问题,影响了电力系统的安全稳定运行。首先研究了系统中水电比例的变化对阻尼水平的影响;其次分析了多机一次调频系统中,强负阻尼机组的选择和灵敏度计算方法;最后提出了多机系统调速器优化策略,结合暂态频率指标,实现了不同水电比例系统的一次调频在稳定性和动作速度之间的平衡,并对超低频振荡模式阻尼比的强弱进行了讨论,可为相关给工程应用提供参考。关键词:水电比例;一次调频;水轮机调速器参数;暂态频率评价指...