www.eage.com.cn2023年4月·|1SpecialTopic|特别策划TV铁磁谐振影响因素仿真分析及综合消谐策略研究TV铁磁谐振影响因素仿真分析及综合消谐策略研究李梦娇1,黄亚峰1,周银2,王汝田1(1.东北电力大学电气工程学院,吉林吉林132012;2.国网荆州供电公司,湖北荆州434000)摘要:在中性点不接地的配电网中,极易产生TV铁磁谐振过电压,严重威胁系统安全运行。铁磁谐振影响因素多种多样,常见消谐措施虽简单易行,但会因实际场景的改变导致消谐效果不理想。基于此,利用PSCAD对TV铁磁谐振与常见消谐方法进行模型搭建及仿真计算,分析总结消谐过程中的谐振影响因素及常见消谐方法的适用场景,得出的一系列结论对电力部门治理铁磁谐振具有一定的指导意义。同时提出分阶段实施的综合消谐策略,不仅降低了成本,而且将消谐措施复合,提出改进后的4TV接线法,根据不同场景及谐振类型选择各自适合的消谐方法,经仿真验证该消谐方案的有效性,其消谐效果优于仅使用单一传统消谐措施,可实现迅速消谐。关键词:TV铁磁谐振;谐振影响因素;分阶段消谐策略;改进后4TV法;PSCAD/EMTDCSimulationanalysisofinfluencefactorsofTVferromagneticresonanceandresearchoncomprehensiveharmoniceliminationstrategyLIMengjiao1,HUANGYafeng1,ZHOUYin2,WANGRutian1(1.SchoolofElectricalEngineering,NortheastElectricPowerUniversity,Jilin132012,China;2.StateGridJingzhouPowerSupplyCompany,Jingzhou434000,China)Abstract:Inthedistributionnetworkwithungroundedneutralpoint,TVferroresonanceovervoltageisveryeasytooccur,whichseriouslythreatensthesafeoperationofthesystem.Therearevariousfactorsaffectingferroresonance.Althoughthecommonharmoniceliminationmeasuresaresimpleandeasytoimplement,theeffectofharmoniceliminationisnotidealduetothechangeoftheactualscene.Basedonthis,thispaperanalyzesandsummarizestheinfluencefactorsintheprocessofharmoniceliminationandapplicationscenariosofcommonharmoniceliminationmethodsthroughthemodelbuildingandsimulationcalculationofTVferroresonanceandcommonharmoniceliminationmethodsbyPSCAD,anddrawsaseriesofconclusionsthatcanprovidereferenceforthepowersectortocontrolferroresonance.Atthesametime,acomprehensiveharmoniceliminationstrategyimplementedinstagesisproposed,whichnotonly...