摘要:电能是现代企业生产的主要能源和动力。企业供电就是要很好地为企业生产服务,切实保证企业生产和生活用电的需要。原变电所已不能满足用电需求,为改善供电质量,提高供电可靠性,并根据发展规划及负荷现状,设计10kv变电所。
本设计根据XX企业所能取得的供电电源和该厂用电负荷的实际情况,并适当考虑到生产发展,按工厂供电的基本要求,对各车间进行了负荷计算和无功补偿;确定出了各变电所的位置及各变电所变压器的台数、容量和型式;计算了短路电流;选择了各线路导线截面和变电所高低压设备;配置了继电保护装置、防雷和接地装置;绘出设计图样,完成了XX企业的低压供配电系统设计。8352
关键词:10KV变电所、短路电流、低压配电系统、继电保护、防雷与接地
毕业设计说明书(论文)外文摘要
Title XX enterprise 10 KV substation and low voltage distribution system graduation design
Abstract
The electricity is modern enterprise production of the main sources of energy and motive force. The power supply enterprise is to be good for enterprise production services, really ensure enterprise production and living power needs. The original substation already cannot satisfy the needs, to improve the quality of power supply, improve the power supply reliability, and according to the development planning and load current situation, design 10 kv substation.
This design according to the XX enterprise can get the power supply and power supply and the actual situation of the electrical load, and appropriate consideration of production development, according to the basic requirements of power plant, the workshop of the load calculation and reactive compensation; To determine the position of each substation and the transformer substation of sets, capacity and type; The short-circuit current calculation; Choose each line of high and low voltage equipments and wire section substation; The relay protection device, with the lightning protection and grounding device; Draw design pattern, the completion of the XX enterprise of the power supply system design.
Keywords 10 KV substation、short circuit current 、 low voltage power distribution system、 relay protection, lightning protection and grounding
目 次
1 引言1
2 主接线设计1
2.1 电气主接线的基本要求1
2.2 主接线的设计2
3 负荷计算4
3.1 负荷计算的目的和方法4
3.2 负荷计算5
4 无功功率补偿8
4.1 无功功率补偿的基本知识8
4.2 无功功率补偿8
5 低压电网短路电流计算12
5.1 短路电流计算12
6 电气设备选择与校验20
6.1 一次测设备选择与校验20
6.2 二次测设备选择与校验25
6.3 母线选择与校验28
7 变电所的建设30
7.1 变电所形式的确定30
7.2 箱式变电站32
7.3 一号独立变电站33
7.4 二号独立变电站36
7.5 三号独立变电站39
8 10KV变电所电力变压器的继电保护41
8.1 电力变压器的故障形式41
8.2 电力变压器的继电保护42
9 10KV变电所的防雷与接地设计45
9.1 变电站直击雷过电压保护46
9.2 雷电侵入波过电压保护48
9.3 变电所公共接地装置的设计49
10确定车间低压配电系统布线方案50
10.1车间配电电压的选择50
10.2车间配电级数的选择50
10.3低压配电线路的选择50
10.4车间配电系统接线方案的选择50
11选择低压配电系统的导线及控制保护设备51 企业10KV变电所及低压配电系统的设计:http://www.youerw.com/zidonghua/lunwen_6642.html