1、 I 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，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 软件绘制电气图，进一步完善
2、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 II ABSTRACT 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 au
3、tomation 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,
4、 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
