110kV变电站一次部分设计成稿Word文件下载.docx

110kV变电站一次部分设计成稿Word文件下载.docx

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This paperdesigns a110kVsubstation.Firstly,according tothegivenmaterial,electricitylineandtheparametersoftheload

whichisprovidedbytheassignmentbook,throughconsideringthe

would-besubstation,analyzing electrical data,confirming theMainelectricalbusformationof110kV 、35kV、10kVsidebasedon

security,economyandreliability,under theguideofdispilineN-1thenconformthenumbers,volumeandtypeofthemaintransformerthroughcircuitcalculationandsupplydistrict,thusgettingthe

parametersofallthecomponent,atthesametimewiththeuseofdisplineN+1,mypaperdesignstheconsumeofsubstation,simplifyelectriccircuit,selectshortpointtocarryonshortcircuitcalculationsoperationcircuit,selectandcheckoutelectrical

equipment,includingbus,breaker,disconnectswitch,voltagetransformer,currenttransformerandsoon,sothatconformthedistributionapparatus.Configuratingrelayprotectionand

setting-calculationfortheelectricityline,transformerandbus

according totheloadandshortcalculations.At thesametime,thispaperanalysessimplylightningprotectionandgrounding

system.Finally,twopicturesaregivenincludingmainelectricalwiringdiagramand110kVpowerdistributionequipmentsectional

drawing

Keywords:

Substationdesign,Transformer,Mainelectricalwiring,Equipmentelection

目录

摘 要

第1章 绪论................................................. 1

1.1变电站概述........................................... 1

1.1.1变电站在电力系统中的地位........................ 1

1.1.2负荷对变电所供电的要求.......................... 2

1.1.3电力系统的额定电压.............................. 2

1.2我国变电站及其设计的现状、发展趋势及新变化........... 3

1.3变电站设计的主要原则................................. 5

第2章电气主接线设计......................................... 6

2.1电气主接线设计基础................................... 6

2.1.1对电气主接线的基本要求.......................... 6

2.1.2变电站电气主接线的设计原则...................... 7

2.1.3电气主接线设计步骤.............................. 8

2.2电气主接线的基本形式................................ 10

2.3电气主接线选择...................................... 11

第3章 变电站主变压器选择.................................. 15

3.1主变压器台数的选择................................... 15

3.2无功补偿措施......................................... 16

3.2.1无功功率补偿的必要性........................... 16

3.2.2无功功率补偿的方法............................. 16

3.3主变压器容量的选择................................... 16

3.4主变压器型号的选择................................... 18

3.5主变压器选择型号.................................... 20

3.6变电所所用电设计..................................... 20

3.6.2 直流系统...................................... 21

3.6.3 所用电选择....................................

21

第4章

短路电流计算.........................................

22

4.1

短路形成原因.........................................

4.2

短路的危害及预防办法................................

23

4.3

短路电流计算的目的...................................

4.4

短路电流计算方法....................................

4.5

24

4.5.1110kV 侧母线短路计算..........................

27

4.5.235kV 侧母线短路计算...........................

29

4.5.310kV 侧母线短路计算...........................

31

第5章

电气设备的选择......................................

34

5.1

导体的选择和校验....................................

5.1.1110kV 母线选择及校验..........................

36

5.1.235kV 母线选择及校验...........................

38

5.1.310kV 母线选择及校验...........................

39

5.2

断路器和隔离开关的选择及校验........................

40

5.2.1110kV 侧断路器及隔离开关的选择及校验..........

41

5.2.235kV 侧断路器及隔离开关的选择及校验...........

43

5.2.310kV 侧断路器及隔离开关的选择及校验...........

46

5.2.410kV 侧母联断路器的选择和校验.................

48

5.3

互感器的选择........................................

50

5.3.1 电流互感器的选择..............................

5.3.2电流互感器的校验...............................

52

5.3.3电压互感器的选择...............................

54

第6章

防雷保护.............................................

56

6.1

直击雷保护...........................................

6.2

侵入波保护.........................................

57

6.3变电所接地装置....................................... 57

第7章配电装置.............................................. 58

7.1配电装置概述......................................... 58

7.1.1配电装置的类型及其特点......................... 58

7.1.2配电装置型式的选择............................. 59

7.2对配电装置的基本要求和设计步骤...................... 60

7.3屋内配电装置........................................ 61

7.4屋外配电装置