基于IEC61850标准的继保测试仪关键技术研究

硕士学位论文基于IEC61850标准的继保测试仪关键技术研究RESEARCHONKEYTECHNOLOGIESOFRELAYTESTDEVICEBASEDONIEC61850莫文科2010年6月国内图书分类号：TM733学校代码：10213国际图书分类号：621.31-密级：公开工学硕士学位论文基于IEC61850标准的继保测试仪关键技术研究硕士研究生：莫文科导师：郭志忠教授申请学位：工学硕士学科：电气工程所在单位：电气工程及自动化学院答辩日期：2010年6月授予学位单位：哈尔滨工业大学ClassifiedIndex:TM733U.D.C:621.31DissertationfortheMasterDegreeinEngineeringRESEARCHONKEYTECHNOLOGIESOFRELAYTESTDEVICEBASEDONIEC61850Candidate：MoWenkeSupervisor：Prof.GuoZhizhongAcademicDegreeAppliedfor：MasterofEngineeringSpeciality：ElectricalEngineeringAffiliation：SchoolofElectricalEngineeringandAutomationDateofDefence：June,2010Degree-Conferring-Institution：HarbinInstituteofTechnology哈尔滨你工业大学工学硕士学位论文I摘要数字化变电站是新一代变电站的技术发展趋势，继电保护作为自动化系统的重要部分，受电子式互感器、计算机网络通讯技术和IEC61850通讯标准的影响，也上升为数字化保护。对继电保护的测试工作也要相应的跟上数字化的步伐。目前国内外对数字式继电保护测试技术、测试仪的研究较少，且缺乏全面性和深入性。针对这一情况，论文根据数字化保护的特点、现有测试装置的状况，找出继保测试仪研发的三大关键技术：过程层的61850通讯技术、高精度的暂态计算、全自动化的继保测试技术，然后分别研究、提出方案，并进行验证。首先研究继保测试仪目前昀急需解决，也是昀基础的问题——与被测继保装置的61850通讯：先分析SV、GOOSE通讯原理和实现细节，解决测试仪因缺乏信息模型而产生的一系列问题。在编写程序验证实现方案正确性后，分析提出一种数字式测试仪新的工作模式：PC对发送的报文预处理，降低下位机工作量，简化处理过程。然后从系统故障和互感器两个计算模块着力提高测试仪暂态计算的精度，以适应继电保护未来的发展需要。论文改进现有测试仪模拟系统故障过程的不足之处外，还重点研究目前4类典型电子式互感器的传感原理，推导传递函数，分析各自暂态特性，为测试仪的高精度计算做好理论基础。昀后基于IEC61850通讯特点，提出全自动继保测试的想法。研究全自动化测试所需信息和操作过程后，分析所涉及的通讯原理。然后在IEC61850通讯仿真平台上对一台数字式保护装置的信息模型进行仿真操作，证明全自动继保测试的可行性。关键词：数字化变电站；继电保护测试仪；IEC61850；暂态计算；自动化测试哈尔滨你工业大学工学硕士学位论文IIAbstractDigitalsubstationisanewgenerationsubstation’stechnologytrend.Asanimportantpartofsubstationautomationsystem,therelayprotectionindigitalsubstationisaffectedbyelectronictransformers,computernetworkcommunicationtechnologyandIEC61850standards.Nowdigitalprotectionisusedandpromotedasanewfeatureofdigitalsubstation.ItforcestherelaytestingbecomedigitalandbasedonIEC61850communicationsystem.Neverthelessthereislackofresearchondigitalrelaytesttechnologyorrelateddevice,andthefewresearchresultsarenotcomprehensiveandthorough.Inviewofthesesituations,thekeytechnologiesofdigitalrelaytestingdevicebasedonIEC61850areresearchedinthisthesis.Accordingtothenewfeaturesofdigitalrelayandthetestingcircumstanceinengineeringprojection,keytechnologiesofthenewtestequipmentincludethe61850communicationfunction,transientcalculationandautomaticrelaytest.Thesepointsareproposedandresearchedrespectivelyindifferentchapter.Alsotheimplementationschemeandverificationaregivensubsequently.Themostimportantandfundamentalpartindigitalrelaytestingdevice—communicationalfunctionisanalyzedfirstlyinthisthesis.ThecommunicationaltheoriesofSVandGOOSEaredefinedwellin61850.Buttheactualfactthatrelaytestingdoesn’thavemodelbringssomecommunicationaldifficulties.Afterdetailedanalysis,thesolutiontotheseproblemsandthecorrectiveverificationofcommunicationalprogramaregivensubsequently.Onthebasisofanalysis,anewworkingmodeofrelaytestdeviceisproposed:PCpre-processingthesentmessagereducestheworkloadoflowermachineandsimplifiestheprocess.Thedigitalprotectiontestneedsimprovingtransientcalculation’saccuracytomeetdigitalrelay’sfutureneeds.Twopartofrelayprotectiontest’saccuratecalculationisanalyzedrespectively.Afewflawsaboutpowersystemfaultsimulationintraditionalrelaytestingareindicatedwiththeirimprovement,andthemeasuringtheories,transferfunctions，transientfeaturesof4kindsofcommonelectronictransformersarewellresearched.Alltheseworklaidatheoreticalfoundationfortestdevice’scomputing.Atlastthethinkingoffullyautomaticrelaytestingisposedandresearched.All哈尔滨你工业大学工学硕士学位论文IIIinformationandoperationneededinthefullyautomaticrelaytestingprocessaresummarized.Then61850communicationalprocessesinvolvedareintroducedbriefly.Finallythethinkingoffullyautomaticrelaytestingisprovedfeasiblebytheresultoftestoperatedon61850communicationsimulationsystem.Keywords:digitalsubstation,relaytestingdevice,IEC6150,transientcalculation,automaticrelaytest哈尔滨你工业大学工学硕士学位论文III目录摘要.............................................................................................................................IAbstract......................................................................................................................II第1章绪论...............................................................................................................11.1课题来源及研究的目的和意义.......................................................................11.2国内外的研究现状与分析...............................................................................21.2.1数字化变电站发展现状............................................................................21.2.2数字化继电保护的特点............................................................................31.2.3数字式继保测试仪的研究现状.................................................................71.3本文研究的主要内容.....................................................................................10第2章继保测试仪基于61850通讯的测试技术研究...........................................122.1IEC61850通讯原理研究.................................................................................122.2继保测试仪61850通讯的实现.....................................................................162.2.1测试仪的信息模型....................................................