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.........