(完整版)火电厂电气一次部分毕业设计论文

题目：火电厂电气一次部分毕业设计

学院：信息电子技术学院年级：

专业：电气工程及其自动化姓名：

学号：

摘要

发电厂是电力系统的重要组成部分，也直接影响整个电力系统的安全与运行。

在发电厂中，一次接线和二次接线都是其电气部分的重要组成部分。

本设计是电气工程及其自动化专业学生毕业前的一次综合设计，它是将本专业所学知识进行的一次系统的回顾和综合的利用。设计中将主要从理论上在电气主接线设计，短路电流计算，电气设备的选择，配电装置的布局，防雷设计，发电机、变压器和母线的继电保护等方面做详尽的论述，并与三河火力发电厂现行运行情况比较，同时，在保证设计可靠性的前提下，还要兼顾经济性和灵活性，通过计算论证该火电厂实际设计的合理性与经济性。在计算和论证的过程中，结合新编电气工程手册规范，采用CAD软件绘制了大量电气图，进一步完善了设计。

关键字主接线设计；短路电流；配电装置；电气设备选择；继电保护

Power plants is an important part of power system, and also affect the safety of the whole power system with operation. In power plant, a wiring and secondary wiring is the important part of electrical part.

This design is the electrical engineering and automation of professional students before graduation design, it is a comprehensive professional knowledge learnt this a systematic review and comprehensive utilization. Design mainly from theory will in the main electrical wiring design, short-circuit current calculation, electrical equipment choice, power distribution equipment layout, lightning protection design, generator, transformer and busbar protection etc, and a detailed discussion with the current operation sanhe coal-fired power plants, meanwhile, in comparison to ensure that the design reliability premise, even give attention to two or morethings economy and flexibility, through calculation demonstrates that the practical rationality of the design of power with economy. In the process of calculation and argumentation, combined with the new electric engineering manuals, using CAD software standard drawing a lot of electrical diagrams, further improve the design.

Keywords Lord wiring design; Short-circuit current; Distribution device; Electrical equipment selection; Relay protection

摘要........................................................................................................................................................ Abstract...................................................................................................................................................第 1 章绪论....................................................................................................................................

1.1课题背景 .......................................................................................................................................

1.1.1社会背景.................................................................................................................................

1.2课题研究的目的和意义................................................................................................................

1.3国内外研究现状 ...........................................................................................................................

1.4课题的主要研究工作 ...................................................................................................................第 2 章电气主接线设计..................................................................................................................

2.1电气主接线的设计原则及要求....................................................................................................

2.1.1明确任务和设计原理.............................................................................................................

2.2方案的设计、论证和选择............................................................................................................

2.3本章小结 .......................................................................................................................................第 3 章短路电流的计算..................................................................................................................

3.1短路的原因、后果及形式............................................................................................................

3.2短路的物理过程及计算方法........................................................................................................

3.3短路电流的计算数据和计算结果................................................................................................第 4 章电气设备的选择..................................................................................................................

4.1主变压器和发电机的选择............................................................................................................

4.2高低压电气设备的选择................................................................................................................

4.3导体的设计和选择 .......................................................................................................................第 5 章配电装置..............................................................................................................................

5.1屋外配电装置 ...............................................................................................................................