60MW汽轮发电机继电保护设计

I摘要本次设计的课题是60MW汽轮发电机变压器二次保护设计，本次设计内容通过计算出短路电流选择发电机以及变压器的保护类型，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情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保护设计。根据本电厂主接线的型式和容量需要对发电机和变压器分别设置主保护和后备保护，使得保护范围缩小，保护能够相互配合，最大程度让电厂供电和输电的可靠性提高，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保护装置IIAbstractThedesignofthesubjectis60MWturbinegeneratortransformerprotectiondesign,thedesigncontentthroughthecalculatedshortcircuitcurrenttransformerprotectionandchoosegeneratortypes,andsettingcalculation,.Fromensuringgeneratortransformercanappearinfaultandnotthenormaloperationconditionscanmaketheequipmentrunningorjumpouttosignalconsideredthedesignscheme,thuscompleting60MWturbinegeneratorandtransformerprotectiondesign.Accordingtothepowerplanttypeandcapacityoftheconnectiontogeneratorsandtransformerssetrespectivelymainprotectionandbackupprotection,makingthescopeofprotection,theprotectioncancooperatewitheachother,thegreatestdegreetothereliabilityofpowersupplyandpowertransmissionimprove,guaranteethestabilityofthepowersupply.KeywordsPowerplantTransformerGeneratorCalculationofshort-circuitcurrentProtectorIII目录摘要............................................................IAbstract..........................................................II第1章绪论.......................................................11.1设计背景..................................................11.2设计意义..................................................21.3国内外发展情况............................................2第2章原始数据分析...............................................42.1系统主接线和发电机变压器参数...............................42.1二次回路设计方案的拟定.....................................5第3章系统参数及短路电流计算.....................................83.1系统参数计算...............................................83.2电流互感器的选择..........................................83.3电压互感器的选择.........................................103.4短路电流计算的目的和意义.................................103.5短路电流的计算...........................................113.5.1d1点短路电流计算...................................113.5.2d2点短路电流计算...................................12第4章发电机保护................................................144.1发电机纵差保护...........................................144.1.1发电机纵差保护的配置................................144.1.2发电机纵差保护的整定计算............................164.2反应发电机零序电压的匝间短路保护.........................174.2.1发电机零序电压匝间短路保护的配置....................174.2.2发电机零序电压匝间短路保护的整定....................184.3发电机定子绕组单相接地保护...............................184.3.1发电机定子绕组单相接地保护的配置....................184.3.2发电机定子绕组单相接地保护的整定计算................194.4发电机励磁回路接地保护...................................20IV4.4.1发电机励磁回路接地保护..............................204.5发电机定子绕组定时限过负荷保护...........................214.5.1发电机定子绕组定时限过负荷保护的配置................214.5.2发电机定子绕组定时限过负荷保护的整定计算............224.6发电机过电压保护.........................................224.6.1发电机过电压保护的配置..............................224.6.2发电机过电压保护的整定计算..........................234.7发电机复合电压起动过电流保护.............................234.7.1发电机复合电压起动过电流保护的配置..................234.7.2发电机复合电压起动过电流保护的整定计算..............244.8发电机定时限负序电流保护.................................254.8.1发电机定时限负序电流保护的配置......................254.8.2发电机定时限负序电流保护的整定计算..................26第5章变压器保护................................................275.1变压器电流速断保护.......................................275.1.1变压器电流速断保护的配置............................275.1.2变压器电流速断保护的整定计算........................285.2变压器纵差保护...........................................285.2.1变压器纵差保护的配置................................285.2.2变压器纵差保护的整定计算............................295.3变压器零序电流保护.......................................305.3.1变压器零序电流保护的配置............................305.3.2变压器零序电流保护的整定计算........................315.4变压器过负荷保护.........................................325.4.1变压器过负荷保护的配置..............................325.4.2变压器过负荷保护的整定计算..........................325.5变压器复合电压起动过电流保护.............................335.5.1变压器复合电压起动过电流保护的配置..................335.5.2变压器复合电压起动过电流保护的整定计算..............345.6变压器非电量保护.........................................355.6.1瓦斯保护............................................355.6.2瓦斯保护整定值......................................37V第6章发变组保护................................................386.1发变组纵联差动保护的配置.................................386.2发变组纵联差动保护的整定计算.............................39第7章断路器的控制回路..........................................407.1控制回路.................................................407.1.1控制开关............................................407.1.2控制回路............................................40第8章指挥信号..................................................448.1发电机指挥信号介绍.......................................448.2发电机指挥信号回路图.....................................45结论...........................................................46致谢...........................................................47参考文献.........................................................48VIContentsAbstract(chinese)..........................................................................................................IAbstract.........................................................................