600MW的凝汽式火电厂电气Word格式.docx

600MW的凝汽式火电厂电气Word格式.docx

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前言...............................................................................................................................................1

摘要...............................................................................................................................................2

第一章电力工业的发展概况：

.........................................................................................3

第二章发电机，变压器的选择与计算............................................................................3

2.1发电机,变压器的选择原理:

....................................................................................................3

2.1.1发电机的选择原则.........................................................................................................................3

2.1.2主变压器的选择原则........................................................................................................................4

2.1.3厂用变压器容量选择的基本原则和应考虑的因素..............................................................4

2.2确定变压器台数及容量...........................................................................................................4

2.2.1主变的选择............................................................................................................................................4

第三章电气主接线...............................................................................................................6

3.1主接线的设计原则和要求......................................................................................................6

3.2主接线方案的选择....................................................................................................................6

3.2.1初定方案................................................................................................................................................6

3.2.2比较并确定主接线方案...................................................................................................................8

3.3厂用电系统的设计....................................................................................................................8

3.3.1厂用电接线的选择..............................................................................................................................8

3.3.2厂用变压器选择.................................................................................................................................8

第四章短路电流分析计算：

..............................................................................................9

4.1短路电流计算目的及规则：

..................................................................................................9

4.2短路等值电抗电路及其参数计算.........................................................................................10

4.2.1电抗计算：

..........................................................................................................................................10

4.3各短路点短路电流计算：

...................................................................................................11

4.2.1短路点k1的计算（220Kv母线侧）.......................................................................................11

4.2.2短路点k2的计算（发电机端18KV）....................................................................................12

4.2.3短路点k3的计算..............................................................................................................................15

4.4短路电流计算结果......................................................................................................................16

第五章电气设备的选择：

...............................................................................................16

5.1电气设备选择的一般原则及短路校验..................................................................................16

5.1.1设备选择的一般原则.......................................................................................................................16

5.1.2按短路条件进行校验.......................................................................................................................17

5.2主要电气设备的选择............................................................................................................19

5.2.1隔离开关的选择.................................................................................................................................19

5.2.2断路器的选择.....................................................................................................................................20

5.2.3导体的选择..........................................................................................................................................20

5.2.3避雷器的选择.....................................................................................................................................21

5.2.4电压互感器的选择...........................................................................................................................22

5.2.5电流互感器的选择.........