某冶金机械修造厂总降压变电所电气设计.doc

某冶金机械修造厂总降压变电所电气设计 摘要 变电所是用户与发电厂之间中间环节，担负着从电力系统受电，经过变压，然后配电任务。配电所担负着从电力系统受电，然后直接配电任务。显然，变配电所是工厂供电系统枢纽，在工厂中占有特殊重要地位。 本文主要详细介绍了一个冶金机械修造厂总降压变电所电气设计，是针对一个供电的分析和设计主要包括：负荷计算无功功率补偿、变压器台数和容量的确定、电气主接线方案的选择、短路电流的计算、一次设备的选择负荷 Abstract Substation is the intermediate links between users and power plants, to carry electricity from the power system by, through swing, and distribution tasks. Charged with distribution of the electricity from the power system by, and then direct distribution tasks. Obviously, transformation and distribution of the power supply system is the hub of the factory, the factory occupies a special and important position. This paper introduces a Metallurgical Machinery General Factory built step-down substation electrical design, is a secondary load power for the analysis and design. Include: load calculation and reactive power compensation, the choice of location and type substation, transformer station to determine the number and capacity, the choice of main electric connection schemes, short-circuit current calculation, a device of choice plants and high-voltage power line Distribution of choice, protection of the design and schematic drawing. The design of the contents of the realities, by looking for a lot of relevant information, designed to meet the current requirements of the substation. Using high-pressure side of the isolation switch - the main substation circuit breaker substation wiring so stop transmission operation is very flexible, and short-circuit fault occurs, the circuit breaker will automatically trip, if the short-circuit fault has been eliminated, resume closing immediately Power supply. Key words: electrical; calculated load; power supply; compensation; protection 目录 前 言 1 第1章 绪 论 2 1.1 工厂供电系统设计概述 2 1.1.1 工厂供电设计的一般原则 2 1.1.2 工厂供电设计的基本内容 2 1.2 课题内容与设计任务 3 1.2.1 设计任务 3 1.2.2 作为设计依据的原始资料 3 1.3 设计构想 4 第2章 选择车间变电所的位置 5 2.1 选择车间变电所所址的一般原则 5 2.2 车间变电所位置及型式的确定 5 第3章 负荷计算及无功功率补偿设计 6 3.1 负荷计算 6 3.1.1 负荷计算的方法 6 3.1.2 各车间设备的负荷计算 6 3.1