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ID:36474490
大小:350.55 KB
页数:53页
时间:2019-05-11
《上海西郊变STATCOM的测控技术研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、上海交通大学硕士学位论文上海西郊变statcom的测控技术研究姓名:李珅申请学位级别:硕士专业:电力系统及其自动化指导教师:邰能灵;吴均20070701上海交通大学工程硕士学位论文《上海西郊变statcom的测控技术研究》接方式对所有的链节两两进行试验。实验结果表明,主电路单元、控制与保护单元、检测与故障诊断单元及冷却系统在试验期间都应无异常现象发生。论文最后对上述研究成果进行了总结,指出发展STATCOM装置具有巨大的社会效益,对国民经济发展有积极的意义,代表了现阶段无功补偿、电能质量控制的发展方向。关键词:上海西郊变,STATCOM,电压稳定,测控技术,主电路单元,控
2、制与保护,监测与故障诊断,链式结构II上海交通大学工程硕士学位论文《上海西郊变statcom的测控技术研究》Researchofthemeasurementandcontrolsystemfor±50MVAcascadedSTATCOMABSTRACTThe220kvXijiaosubstationislocatedatthecentralareaofnorthwestdistinctinShanghai,whichisthecoresubstationinHuangdusubzoneofShanghaielectricpowergrid.Theloadinthisare
3、aisconcentratedlargeandthevolumeofpowerexchangeisnumerous.Thechangerateofbusvoltagealongwiththeloadisalsoquick.Thecurrentreactivepowercompensationequipmentcannotprovidethedynamicvoltagesupportingwhenthereisthesystemfailure.Eventuallyitcannotguaranteetheoperationalstabilityofthepowernetwor
4、kinthearea.Itisdeservedtopayacloseattentiontotheprojectthathowtocontrolthebusvoltageinwestsuburbinasafe,reliable,effectiveway,especiallyinthecaseofsystemfailure.TheStaticSynchronousCompensator(STATCOM)belongstothepowerflowcontrolequipmentofFlexibleACTransmissionSystems(FACTS).Thereactivec
5、urrentoutputcanbestablewhenthevoltagefluctuatesinalargerange.Itcanstillprovideapowerfulreactivepowersupportingwhenthevoltageislow,andcanbecontinuousfromcapacitivestatustoinductivestatus.STATCOMcanalsorestraintvoltageflickerandincreasesystemtransientstability.Consideringourcountry’sbasicco
6、nditionandcurrenttechnology,developingSTATCOMisaneffectivemethodtosolveproblemofthevoltagestabilityinourcountry.Thispaperconcludestheauthor’sresearchworksonSTATCOM,themaincontentsarestatedbelow:1.Itproposesageneraldesignof50MVASTATCOMproject.Aftercomparisonandanalysisofseveralversionsandt
7、heexperienceof20MVASTATCOM,themaincircuitof50MVASTATCOMusechainpatterninverter,andthepowerdeviceuseIGCT.STATCOMmainlyconsistofsinglephaseinverterwiththreephaseschainpattern,6connectedreactors,highvoltageswitchboard,boostingtransformer,control/supervisorunits,protect
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