城区小区供配电设计论文.doc

内蒙古科技大学 本科生毕业设计说明书(毕业论文) 题 目：城区小区供电系统的设计 学生姓名：****** 学 号：*********** 专 业：电气工程及其自动化 班 级：电气2011-2班 指导教师：*** 副教授 城区小区供电系统的设计 摘要 随着社会的进步，供电系统越来越完善，人们对供配电的安全可靠要求越来越高，社会也有能力给居民提供安全可靠、统一规格的供电设施。本次设计针对中型高层小区的供配电，旨在设计完善、可靠、方便检修、节约投资的小区供配电系统，使居民用电安全、可靠，设计具有普遍意义的小区供配电系统。 本次设计把四个接线图作为重点，前面四章都是为了它准备的。设计流程如下：首先收集小区资料，确定小区规模，统计小区电气系统都有那几个部分，进行负荷预算，负荷预算使用需要系数法，从而选择变压器的数量与型号，接下来就可以确定无功补偿容量；然后计算三相短路电流，短路电流计算采用标幺值法，通过这一步选择电气设备，并进行校验；最终主接线和配电箱的配线就可以确定了，另外加了变压器保护、母线保护、接地保护的内容。 最终我的设计画出开闭站主接线图、0.4KV主接线图、照明配电图、动力配电图、小区电缆走向图。设计出了小区供配电系统，能很好地说明小区供配电系统的组成、运行与布局，统一了电气设备，利于检修维护，设计具有普遍意义。 关键词：电气主接线；电气设备；负荷分析。 The design of the power supply system of urban residential area Abstract With the progress of the society, the power supply system is more and more perfect, people is higher and higher requirement for the safety and reliability of power supply and distribution system, social residents also have the ability to provide safe and reliable, unified specifications of the power supply facilities. The design for power supply and distribution of medium-sized high-level residential area, aims to improve design, reliable, convenient maintenance, saving investment area power supply and distribution system, make the residents electricity safe, reliable, universal design of power supply and distribution system. In front of the design of the four wiring diagram, as the key of chapter four is for the it services. Community information collected design process is as follows: first of all, determine the plot scale, the statistical village electrical systems have that a few parts, to load the budget, load coefficient method, the budget use need to choose the number and type of transformer, you can determine the reactive power compensation capacity; And then calculate the three-phase short-circuit current, short circu