化纤毛纺厂总变电所及配电系统设计_0.doc

化纤毛纺厂总变电所及配电系统设计 毕业设计(论文) 题 目 化纤毛纺厂总变电所及配电系统设计 教学点 专 业 年 级 姓 名 指导教师 定稿日期： 2011 年 6月 1 日 I 摘 要 众所周知，工厂供电就是将电力系统的电能降压再分配电能到各个厂房或车间中去，它由工厂降压变电所，高压配电线路，车间变电所，低压配电线路及用电设备组成。工厂总降压变电所及配电系统设计，是根据各个车间的负荷数量和性质，生产工艺对负荷的要求，以及负荷布局，结合国家供电情况来设计的。 因此，为实现工厂供配电的高效和合理，必须根据各车间的负荷数量和性质，并考虑到电气设备的运行维护以及生产工艺对负荷的要求，进行负荷的统计和短路电流的计算，并最终依此选择高低压设备、输电线路的型号，完成简单避雷措施设计，解决对各部门的安全可靠，经济分配电能的问题！ 关键词：降压，电能，负荷，短路电流，电气设备 II ABSTRACT As we all know ,Factory power supply system of the power system is the redistribution of power step-down power to the various factories or workshops, and its step-down transformer from the factory, high-voltage power distribution lines,substation plant, low-voltage distribution lines and electrical equipment composition. The total step-down substation plant and distribution system design is based on the various workshops the number and nature of the load, the production process on the load requirements as well as load distribution, combined with the national power supply situation. Therefore, in order to achieve the factory for the efficient and rational distribution, the load must be based on the number and nature of the workshop, and taking into account the operation and maintenance of electrical equipment and production process on the load requirements, the load calculation of statistics and short-circuit current, and So select the high and low end equipment, transmission line model, complete the simple design of lightning protection measures to address the safety and reliability of various departments, the problem of economic distribution of power. KEY WORDS: step-down, power, load, short-circuit, electrical equipment III 目 录 前言 ............................................................ 1 第1章 负荷的计算 ............................................. 2 1.1电力系统的负荷 ........................................ 2 1.1.1负荷的概念 ....................................... 2 1.1.2电力负荷的等级 .................................. 2 1.2电力系统的计算负荷 ..................