LabVIEW电力系统

国内图书分类号：TM773国际图书分类号.：621.3工学硕士学位论文基于LabVIEW的电力系统继电保护设计硕士研究生导师申请学位级别学科、专业所在单位授予学位单位：：：：：：刘琳荣雅君教授工学硕士电力系统及其自动化电气工程学院燕山大学ClassifiedIndex:TM773U.D.C.:621.3DissertationfortheMasterDegreeinEngineeringDESIGNOFRELAYPROTECTIONINPOWERSYSTEMBASEDONLABVIEWCandidate:Supervisor:AcademicDegreeAppliedfor:Specialty:University:LiuLinProf.RongYajunMasterofEngineeringPowerSystemandAutomationYanShanUniversity燕山大学硕士学位论文原创性声明本人郑重声明：此处所提交的硕士学位论文《基于LabVIEW的电力系统继电保护设计》，是本人在导师指导下，在燕山大学攻读硕士学位期间独立进行研究工作所取得的成果。据本人所知，论文中除已注明部分外不包含他人已发表或撰写过的研究成果。对本文的研究工作做出重要贡献的个人和集体，均已在文中以明确方式注明。本声明的法律结果将完全由本人承担。作者签字：日期：年月日燕山大学硕士学位论文使用授权书《基于LabVIEW的电力系统继电保护设计》系本人在燕山大学攻读硕士学位期间在导师指导下完成的硕士学位论文。本论文的研究成果归燕山大学所有，本人如需发表将署名燕山大学为第一完成单位及相关人员。本人完全了解燕山大学关于保存、使用学位论文的规定，同意学校保留并向有关部门送交论文的复印件和电子版本，允许论文被查阅和借阅。本人授权燕山大学，可以采用影印、缩印或其他复制手段保存论文，可以公布论文的全部或部分内容。保密□，在年解密后适用本授权书。本学位论文属于不保密□。（请在以上相应方框内打“√”）作者签名：日期：年月日导师签名：日期：年月日摘要I摘要继电保护对电力系统的安全稳定运行起着至关重要的作用。电力系统的飞速发展对继电保护不断提出新的要求，电子技术、计算机技术与通信技术的突飞猛进又不断地促进了继电保护技术的发展。继电保护技术未来将向着计算机化，网络化，智能化，保护、控制、测量和数据通信一体化的趋势发展。虚拟仪器(VirtualInstrument，简称VI)是仪器技术与计算机技术深层次的结合。它是运用应用程序将计算机与功能化模块硬件结合起来，用户可以通过友好的图形界面来操作这台计算机，利用计算机来管理仪器、组织仪器系统，最终达到取代传统电子仪器的目的。虚拟仪器实际上是软硬件结合、虚实结合的产物，它充分利用最新的计算机技术实现并扩展了传统仪器的功能。本文将虚拟仪器技术应用于电力系统继电保护中，以计算机和阿尔泰USB2002数据采集卡为主要硬件，以图形化编程软件LabVIEW为开发平台，构建了一个用于实现信号的采集与信号分析的多功能虚拟继电保护系统，并在此系统的基础上对零序保护、距离保护和纵联差动保护进行了仿真实验。实验结果表明该系统具有以下功能：可实现多通道数据的采集，数字滤波，信号分析和计算，以及数据的存储和对历史数据的复现，线路的零序保护、距离保护以及差动保护能够迅速、可靠动作。此外，该系统在减低设备成本的同时，还具有人机界面友好，维护方便和功能扩充容易的优点。该系统在电力系统试验中充分体现了方便、快捷、实用等优势。关键词电力系统；继电保护；虚拟仪器；LabVIEW；数据采集卡燕山大学工学硕士学位论文IIAbstractTherelayprotectionplaysanimportantroleinthepowersystemsecurity.Therapiddevelopmentofpowersystemhasnewrequesttotherelayprotection,andtherapidlyprogressoftheelectronictechnology,computertechnologyandcommunicationpromotesthedevelopmentofrelayprotectionunceasingly.Therelayprotectiontechnologywilltendtocomputerized,networkedandintellectualized,andwillintegrateprotect,control,measurementwithdatacommunication.Thevirtualinstrumentisthedeeplycombinationoftheinstrumenttechnologyandthecomputertechnology.Itcombinescomputerwiththefunctionalmodulehardwareusingapplicationprogram.Usercannotonlymanipulatethecomputerthroughfriendlygraphicalinterface,butalsomanageinstrumentcontrolandorganizationinstrumentsystem.Itcanfinallyachievethegoalofsubstitutiontraditionelectronicinstrument.Infact,thevirtualinstrumentistheunionofsoftwareandhardware,andtheunionofvirtualandactual.Itfullyusesthenewestcomputertechnologytocompleteandexpandthefunctionoftraditionalinstrument.Thispaperappliesthevirtualinstrumenttotherelayprotection.Itsetsupasystemofvirtualrelayprotectionwiththefunctionofdataacquisitionandsignalanalysis,basedoncomputerandArtUSB2002dataacquisitioncardandsoftwareofLabVIEW.Asimulationexperimentofzero-sequenceprotection,distanceprotectionandpilotdifferentialprotectionbasedonvirtualinstrumentisdone.Theexperimentresultsshowthatthesystemincludesthemulti-channelssignalacquisition,digitalfilter,signalprocessingandcalculation,aswellassignalmemoryandrecall.Thelinezero-sequenceprotection,distanceprotectionanddifferentialprotectioncanoperaterapidlyandreliability.Reducingthecostoftheequipment,thesystemcanalsoprovideafriendlyAbstractIIIhuman-machineinterface.Inaddition,itisconvenientforthesystemmaintenanceandfunctionexpansion.Itisalsoconvenienttothesystemmaintenanceandfunctionexpansion.Thesystemhasgotagoodverificationandshowsthesuperiorperformancesintheofthepowersystem.KeywordsPowersystem;Relayprotection;Virtualinstruments;LabVIEW;Dataacquisitioncard燕山大学工学硕士学位论文IV目录V目录摘要················································································································ⅠAbstract·········································································································Ⅱ第1章绪论····································································································11.1继电保护概述·······················································································11.2虚拟仪器概述·······················································································21.2.1虚拟仪器概念·················································································21.2.2国内外发展现状·············································································31.2.3虚拟仪器技术的意义·····································································41.3本课题的研究意义···············································································51.4本文的研究内容···················································································6第2章数字滤波器及计算机算法·································································72.1数字滤波器··························································································72.1.1数字滤波器概述·············································································72.1.2数字滤波器分类·············································································82.1.3数字滤波器的传统设计方法·······················································102.2正弦函数算法·····················································································112