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发电机差动保护与模拟论文.doc

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发电机差动保护与模拟论文.doc

毕业设计说明书发电机差动保护与模拟学生姓名班级学号院、系、部专业电气工程及其自动化(继电保护)指导教师张阳发电机差动保护与模拟1摘要发电机的安全运行对保证电力系统的正常工作和电能质量起着决定性作用,同时发电机本身也是十分贵重的电气设备,因此,应针对各种不同的故障和不正常运行状态,装设性能完善的继电保护装置。发电机纵差保护是发电机定子绕组及其引出线相间短路的主保护,它能快速切断内部所发生的故障,同时在正常运行及外部故障时,又能保证动作的选择性和工作的可靠性。在保护范围内发生相间短路时,应瞬间断开发电机断路器和自动灭磁开关。本文介绍了发电机差动保护原理并利用MATLAB仿真软件对发电机差动保护进行了仿真,验证了发电机差动保护。关键词发电机故障差动保护MATLAB仿真张阳发电机差动保护与模拟1AbstractToensuresafeoperationofthegeneratorpowersystemofpowerqualityworkandplayadecisiverole,andgeneratorisalsoveryexpensiveitself,therefore,shouldbeelectricalequipmentindifferentkindsoffaultandnotnormaloperationcondition,furnishperfectprotectiondevice.Longitudinaldifferentialprotectionisgeneratorstatorwindingsandleadwirewithmainprotection,itcanquicklycutinsidewhathappenedinnormaloperation,faultfault,andtheexternalcanensuretheactionofthereliabilityofselectivityandwork.Intheprotectionscope,shouldoccurwithgeneratorcircuitbreakerautomaticallydisconnectinstantlydestroyedandmagneticswitch.Thepaperintroducesthedifferentialprotectionprinciple,generators,MATLABsimulationsoftwareanddifferentialprotectionforgeneratorissimulated,andverifiesthegeneratordifferentialprotection.KeyWordsgenerator,fault,differentialprotection,matlabsimulation目录摘要.................................................................................................................................1Abstract...........................................................................................................................11绪论.............................................................................................................................11.1本毕业设计所要解决的问题.................................................................................21.2本次毕业设计的成果............................................................................................22发电机差动保护原理....................................................................................................32.1引言....................................................................................................................32.2发电机的故障和异常运行状态..............................................................................42.3发电机差动保护装设的原则.................................................................................82.4发电机几种纵差动保护的原理..............................................................................62.4.1比率制动式差动保护的原理.............................................................................62.4.2标积制动式差动保护的原理.............................................................................92.5不完全差动保护.................................................................................................102.6发电机相间短路分析..........................................................................................133对RCS985系列发电机保护装置的整定计算..............................................................163.1RCS985发电机保护装置简介............................................................................163.4技术参数............................................................................................................183.5对RCS985发电机保护装置的整定计算.............................................................183.5.1纵差动保护灵敏度系数的定义与校验...............................................................183.5.2纵差动保护的整定...........................................................................................193.5.3对RCS985的整定计算.....................................................................................204模拟仿真....................................................................................................................234.1微机保护算法.....................................................................................................244.1.1傅里叶算法.....................................................................................................25东南大学成贤学院毕业设计(论文)24.1.2全周波傅里叶算法...........................................................................................264.1.3半周波傅里叶算法...........................................................................................284.2电力系统仿真模型..............................................................................................304.3数据采样计算....................................................................................................304.4M语言编程.........................................................................................................305结论...........................................................................................................................31谢辞...............................................................................................................................33参考文献........................................................................................................................33附录1外文资料翻译.........................................................................错误未定义书签。A1.1发电机保护代理技术的应用研究.............................................错误未定义书签。A1.2ResearchonApplicationofAgentinGeneratorProtection.................................37

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