某纺织厂10KV总变电所设计.doc

摘要 电能是现代工业生产的主要能源和动力.随着现代文明的发展与进步，社会生产和生活对电能供应的质量和管理提出了越来越高的要求。工厂供电系统的核心部分是变电所。因此，设计和建造一个安全、经济的变电所，是极为重要的。此工厂供电设计包括：负荷的计算及无功功率的补偿；变电所主变压器台数和容量、型式的确定；变电所主接线方案的选择；进出线的选择；短路计算和开关设备的选择；二次回路方案的确定及继电器保护的选择和整定；防雷保护与接地装置的设计；车间配电线路布线方案的确定；线路导线及其配电设备和保护设备的选择；以及电气照明的设计，还有电路图的绘制。 关键词：电能?? 变电所?? 变压器??? 继电器??? 接地装置 ABSTRACT  Electric energy is the main energy and dynamism of modern industry? production．With development and progress of modern civilization, social production and is it put forward high request more and more to quality and management that electric energy supply to live．The system nucleus of factory supplies power is transformer．It is very important to design and build one safe economical substation．This factory supplies power and designs including: Calculation of load and compensation of the inactive power; Transformer substation main voltage transformer platform count and capacity , sureness of pattern; Mainly wire the choice of the scheme in the transformer substation; Pass in and out the choice of the thread; Choice of shorting out and calculating and switchgear ; Two return circuit sureness and choice that relay protect of scheme exactly make; Defend the thunder and protect the design with the earth device ; The workshop distribution line connects up the sureness of the scheme; Circuit wire and distribution equipment and protecting the choice of the equipment; And the electric design that lighted, there is drawing of circuit diagram. Keyword:Electricenergy? Substation?Transformer??? Tnterruptor?The design with the earth device 目录 前言 1 1原始资料及设计任务 2 1.1基础资料 2 2变电所所址的选择 5 2.1变电所简介 5 2.2变电所选址 5 3负荷统计及无功补偿计算 7 3.1负荷等级划分 7 3.2电力负荷计算 7 3.3无功补偿计算 12 4 变电所主变压器台数和容量的确定 14 4.1变压器的分类及型号 14 4.2变电所变压器的台数和容量的选择 15 5变电所主接线的选择 17 5.1主结线的基本要求 17 5.2变电所的主结线方式 18 6短路电流计算 21 6.1 短路电流的基本概念 21 6.2 短路计算的常用公式 22 6.3 本设计短路电流的计算 27 7电气设备选择 28 7.1 电气设备选择的原则 28 7.2 母线的选择 29 7.3 仪用互感器选择 29 7.4 本变电所电气设备选择 29 8变电所的布置与结构 3