10KV机械厂总降压变电所及高压配电系统设计
关键词 负荷与短路计算 高压设备选择 继电保护整定计算 主接线图 平面布置图
毕业论文设计说明书（论文）外文摘要
Title General Step-down Substations And High-voltage Distribution System Design of Machinery Factory
Abstract
The topic of this design is ‘total step-down substations and high-voltage distribution system design of machinery’. Design content: the computational load, reactive power compensation. Select the site and type of the substation design of main wiring scheme; determine the transformer number, capacity, and computation short-circuit current, select and validate again equipment; relay protection and automatic devices; lightning protection and grounding design. With electrical CAD drawing wiring diagrams, floor plans, ground plan. In this design, combining the basic theory of system performance and practicality, around the basics of power supply technology to confirm design approaches. Refer to power supply design this design manual, all results comply with electrical design specification.
Keywords Load and short circuit current calculation
Selection of high voltage equipment
Relay protection setting calculation
Main wiring diagram Floor plans
目 录
1 引言 1
1．1 设计要求 1
1．2 原始资料 1
2 负荷计算及功率补偿 2
2．1 负荷计算 2
2．2 无功补偿 4
3 电气主接线的设计 6
3．1 变电所位置、形式的确定 6
3．2 配电电压及接地方式的选择 6
3．3 变压器的选择 6
3．4 电气主接线设计 7
4 短路电流计算 8
4. 1 短路计算 8
4. 2 短路计算原理图及等效图 8
4. 3 短路计算结果 9
5 一次设备的选择校验 10
5．1 主变压器35kV侧一次设备 10
5．2 主变压器10kV侧一次设备 11
6 母线与供配电线路设计 13
6．1 母线选择 13
6．2 变配电所进出线设计 14
7 继电保护和自动装置 17
7．1 电力变压器的保护 17
7.2 10kV电力线路保护 20
7.3 10KV并联电容器保护 22
7.4 10KV母线分段断路器保护 23
7.5 自动重合闸选择 23