文档介绍：摘要
毕业设计是对所学知识的一次综合性运用,能够加深我们对基础知识的理解,为以后的工作打下良好基础。本设计严格遵循发电厂电气部分的设计原则,主要介绍了发电厂电气一次部分设计的基本知识,包括设计原则、步骤和计算方法等。通过对电气主接线的设计和计算、厂用电的设计、短路电流的计算、电气设备的选择和校验以及配电装置的设计,简要完成了对所给(3×100MW)凝汽式发电厂的电气一次部分的设计。
关键词:火力发电厂;电气部分;供配电;主接线设计。
ABSTRACT
The graduation project is to studies the knowledge prehensive utilization, can deepen us to the elementary knowledge understanding;will build the good foundation for the later work. A power plant wiring refers is to the user power supply part. Among them, foreign power supply partial names primarily wiring. The part which supplies power to in is called the factory for the power plant production and staff's life (to stand) uses electricity the wiring. Therefore, carries on the science to it the design to have the necessity very much. This design strictly follows the power plant electricity partial principle of design, mainly introduced power plant electricity partial designs elementary knowledge, including principle of design, step putational method and so on. Through design putation, short-circuit putation, electrical equipment choice and verification as well as power distribution equipment design which to the electrical host wiring design and putation, the factory uses electricity, pleted to has given (3×100MW) power plant electrical partial designs.
KEY WORDS: Thermal power plant; The electricity are partial; For power distribution; Main wiring design.
目录
摘要 Ⅰ
ABSTRACT Ⅱ
第1章引言 1
第2章原始资料 2
第3章电气主接线的设计 3
电气主接线的设计 3
电气主接线的叙述 3
给出两种方案 4
厂用电的设计 6
厂用电负荷分类 6
厂用电设计原则 6
第4章主变压器的选择 9
主变压器台数的确定 9
主变压器的容量确定 9
变压器型式的选择 9
第5章短路电流计算 12
短路电流计算的目的 12
短路电流计算条件 12
第6章电气设备的选择 31
断路器和隔离开关的选择 31
220KV侧高压断路器的选择 31
110KV侧高压断路器的选择 35
隔离开关的选择 38
220KV侧隔离开关的选择 38
110KV侧隔离开关的选择 41
电流互感器的选择 43
220KV侧电流互感器的选择 44
110KV侧的CT的选择 46
电压互感器的选择 49
第7章防雷保护的规划 58
雷电过电压的形成与危害 58
电气设备的防雷保护 58
发电厂和变电所的防雷保护 58
架空输电线路的防雷保护