标准厂冷镦车间10千伏车间变电所及低压配电系统设计

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摘 要

本次设计是关于标准厂冷镦车间10千伏车间变电所及低压配电系统的设计。最先从车间的布局考虑，参考了现在很多工厂的平面设计图，从各部分布局的合理性和经济性入手，对工厂厂区的供电进行了设计。先从接线方式和各部分的计算入手，其中包括负荷计算和短路电流的计算、一次设备稳定度的效验。接下来进行了对变电所高压进线和低压出线的选择，车间配电线路的设计。在变电所二次回路设计及继电保护整定当中，考虑了各方面的保护及对保护器具的选择，防雷以及接地保护，考虑到了车间布局的实际情况进行了对防雷接地设备的选择和设计。

关键词 负荷统计 变压器选择 短路电流 设备选择 图纸设计

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Abstract

This standard is designed for Cold Heading Plants workshop low-voltage distribution systems and substations in the design workshop. From the first workshop to consider the layout, reference to the many factories graphic design plans for the layout of the various parts of the economy and the availability of research. Next entered the factory premises of the power supply design. Start with the start of the calculation, including the computational load and short-circuit current calculation of equipment and a stable of well-tested. and low-voltage distribution screen choices. Next, a pair of high voltage substations and low-voltage lines into the choice of wit, workshops distribution line design. Substation in the secondary circuit design and relay setting which I consider various aspects of the protection and the protection of equipment choices. Substation design to the natural missed Lightning protection and grounding design. Taking into account the actual layout of the workshop of the grounding of mine equipment selection and design.

Keywords : load statistics choice of transformer short-circuit current equipment selection drawing design

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目录

摘 要 ........................................................... I Abstract ................................................................................................................... II 1绪论 ................................................................................................................................. 1

1.1电力系统基础 ..................................................................................................... 1 1.2车间变电所的设计原则 ..................................................................................... 2 1.3本次设计 ............................................................................................................. 2 2 设计任务 ...................................................................................................................... 3

2.1 车间平面布置图 ................................................................................................ 3 2.2 车间生产任务及产品规格 ................................................................................ 3 2.3 车间设备明细表 ................................................................................................ 3 2.4 车间变电所的供电范围 .................................................................................. 4 2.5 车间负荷性质 .................................................................................................. 5 2.6 供电电源条件 .................................................................................................. 5 2.7 车间自然条件 .................................................................................................. 5 3 负荷计算和无功功率补偿 ............................................ 5

3.1负荷计算的目的和方法 ..................................................................................... 5 3.2车间的负荷计算 ................................................................................................. 6 3.3无功功率补偿 ..................................................................................................... 9

3.3.1功率因数补偿的目的和方案 ................................................................. 9 3.3.2无功补偿的计算及设备选择 ................................................................. 9 3.3.3无功补偿计算 ....................................................................................... 10

4 变电所位置和形式的选择 ........................................... 13

4.1变电所位置选择原则 ....................................................................................... 13 4.2车间变电所主要类型 ....................................................................................... 13 5 变电所主变压器台数、容量、与类型的选择 ........................... 14

5.1确定车间变电所主变压器型式 ....................................................................... 14 5.2总降压变电所主变压器台数和容量的确定 ................................................... 13 6 变电所主接线方案的设计 ........................................... 15

6.1主接线基本要求 ............................................................................................... 15 6.2 电气主接线的设计原则 ................................................................................ 16 6.3主接线的方案与分析 ....................................................................................... 15

6.3.1．单母线接线 ........................................................................................ 15 6.3.2．单母线分段主接线 ............................................................................ 17

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7 短路电流的计算 .................................................... 19

7.1短路电流的分析及计算方法 ........................................................................... 19 7.2 短路电流的计算 ............................................................................................ 21

7.2.1短路计算 ............................................................................................... 21 7.2.2 点三相短路时的短 …… 此处隐藏：17518字，全部文档内容请下载后查看。喜欢就下载吧 ……