60MW汽轮发电机继电保护设计.docx

本次设计的课题是60MW汽轮发电机变压器：次爱护设计，本次设计内容通过计第出短路电流选择发电机以及变压器的爱护类型，以及整定计算。从保证发电机变压器能够在出现故障及不正常运行状况下可以使设备跳出运行或发出信号考虑设计方案,从而完成60MW汽轮发电机及变压器爱护设计。依据本电厂主接线的型式和容量须要对发电机和变压器分别设置主爱护和后备爱护，使得爱护范围缩小，爱护能够相互协作，最大程度让电厂供电和输电的牢靠性提高，保证供电的稳定。关键词发电厂变压器发电机短路电流计算爱护装置AbstractThedesignofthesubjectis60MWturbinegeneratortransformerprotectiondesign,thedesigncontentthroughthecalculatedshortcircuitcurrenttransformerprotectionandchoosegeneratortypes,andsettingcalculation,.Fromensuringgeneratortransformercanappearinfaultandnotthenormaloperationconditionscanmaketheequipmentrunningorjumpouttosignalconsideredthedesignscheme,thuscompleting60MWturbinegeneratorandtransformerprotectiondesign.Accordingtothepowerplanttypeandcapacityoftheconnectiontogeneratorsandtransformerssetrespectivelymainprotectionandbackupprotection,makingthescopeofprotection,theprotectioncancooperatewitheachother,thegreatestdegreetothereliabilityofpowersupplyandpowertransmissionimprove,guaranteethestabi1ityofthepowersupply.KeywordsPowerplantTransformerGeneratorCalculationofshort-circuitcurrentProtector目录摘要借谀!未定义书釜.Abstract第1章绪论O1.1 设计背景O1.2 设计意义21.3 国内外发展状况3第2章原始数据分析52.1 系统主接线和发电机变压器参数52.2 1二次回路设计方案的拟定6第3章系统参数及短路电流计算83.1系统参数计算82.3 2电流互感器的选择82.4 电压互感器的选择112.5 短路电流计算的目的和意义122.6 短路电流的计算133.5.1d点短路电流计算133.5.2d?点短路电流计算14第4章发电机爱护14发电机纵差爱护的配置14发电机纵差爱护的整定计算164.2 反应发电机零序电压的匝间短路爱护184.2.1发电机零序电压匝间短路爱护的配置18发电机零序电压匝间短路爱护的整定194.3 发电机定子绕组单相接地爱护20发电机定子绕组单相接地爱护的配置20发电机定子绕组单相接地爱护的整定计算214.4 发电机励磁回路接地爱护224.4. 1发电机励磁回路接地爱护224.5 发电机定子绕组定时限过负荷爱护23发电机定了绕组定时限过负荷爱护的配置23发电机定子绕组定时限过负荷爱护的整定计弊244.6 发电机过电压爱护254.7 发电机复合电压起动过电流爱护26发电机复合电压起动过电流爱护的配置26发电机复合电压起动过电流爱护的整定计算284.8 发电机定时限负序电流爱护29发电机定时限负序电流爱护的配置29发电机定时限负序电流爱护的整定计算30第5章变压器爱护305.1 变压器电流速断爱护30变压器电流速断爱护的配置30变压器电流速断爱护的整定计算315.2 变压器纵差爱护32变压器纵差爱护的配置32变压器纵差爱护的整定计算335.3 变压器零序电流爱护345.4 变压器过负荷爱护35变压器过负荷爱护的配置35变压器过负荷爱护的整定计算365.5 变压器复合电压起动过电流爱护37变压器复合电压起动过电流爱护的配置37变压器复合电压起动过电流爱护的整定计算375.6 变压器非电量爱护39瓦斯爱护395.6.2瓦斯爱护整定值41第6章发变组爱护416.1 发变组纵联差动爱护的配置416.2 发变组纵联差动爱护的整定计算42第7章断路器的限制回路437. 1限制回路43限制开关437.1.2限制回路44第8章指挥信号478.1 发电机指挥信号介绍478.2 发电机指挥信号回路图错误!未定义书签.结论49致谢49参考文献50ContentsAbstract(chinese)1tti*未定义书签.AbstractChapter1Preface01.1Designbackground01. 2Designsignificance22. 3Thedomesticandforeigndevelopmentsituation.3Chapter 2 Theoriginaldataanalysis52.1 Systemparameters52.2 Thesecondarycircuitscheme6Chapter 3 Systemparametersandshort-circuitcurrentcalculation83.1 Systemparametercalculation83.2 Currenttransformerchoice83.3 Thevoltagetransformerchoice113.4 Shortcircuitcurrentsignificance123.5 Thecalculationofshort-circuitcurrent133.5.1dlpointthecalculationofshort-circuitcurrent133.5.2(12pointthecalculationofshort-circuitcurrent14Chapter4Generatorprotection144.1Generatorlongitudinaldifferentialprotection.144.1.1Protectionconfiguration144.2Zerosequencevoltagegeneratorturn-to-turnprotection184.2.1 Protectionconfiguration184.2.2 Settingvaluecalculation194. 3Generatorstatorwindingsinglegroundingprotection20Protectionconfiguration20Settingvaluecalculation214.4Thegeneratorexcitationloopgroundingprotection224.4.1Thegeneratorexcitationloopgroundingprotection224. 5Generatorstatorwindingsettimeloadprotection23Protectionconfiguration23Settingvaluecalculation244.6Generatorovervoltageprotection25Settingvaluecalculation264.7Generatorcompositevoltagestartingovercurrentprotection26Protectionconfiguration26Settingvaluecalculation284.8Generatorstatortimelimitnegativesequencecurrentprotection29Protectionconfiguration29Settingvaluecalculation30Chapter5Transformerprotection305. 1Transformerelectricityflowvelocitybrokenprotection30Protectionconfiguration30Settingvaluecalculation315. 2Transformerdifferentialprotection32Settingvaluecalculation335. 3Transformerzerosequencevoltageprotection.34Protectionconfiguration34Settingvaluecalculation355.4Transformeroverloadprotection35Protectionconfiguration355.4.2Settingvaluecalculation365. 5Transformercompositevoltagestartingovercurrentprotection37Protectionconfiguration37Settingvaluecalculation375.6Thepowertransformerprotection39Gasprotection395.6.2Thegasprotectionsettingcalculation41Chapter 6 Generatortransformerprotectiongroup41416.2Generatortransformerprotectiongroupsettingcalculation42Chapter 7 Thecontrolcircuitbreaker43Chapter7Thecontrolcircuitbreaker43Controlswitch437.1.2Controlcircuit44Chapter7Commandsignal478.1Commandsignalgeneratorareintroduced478.2CommandsignageneratorCirCUit.错误!未定义书签.Conclusions49Acknowledgements49References50第1章绪论1.1 设计背景电力系统飞速发展的同时对继电爱护不断提出新的要求，而电了技术、计算机技术及通信技术的飞速发展又为继电爱护技术的发展注入了新的活力。因此，继电爱护技术得天独厚，在40余年的时间里完成了发展的4个阶段。即从电磁式爱护装置到晶体管式继电爱护装置、到集成电路批电爱护装置、再到微机继电爱护装置。随着电