南宁天际大夏防雷接地系统设计
摘要:防雷问题一直是世界各国关注的课题。雷击不但直接造成对地面目标物的破坏,而且雷电放电产生的电磁场也会对电气设备,特别是建筑物内部的弱电设备构成威胁。防雷需要通过进一步的调查研究和观测来弄清其特点、找出问题所在,制定有针对性的防雷措施。
本文对南宁天际大厦防雷接地系统进行了总体设计,介绍了防雷接地系统的方案设计和选择,对直击雷采取的是避雷带和避雷网相结合的保护方式。
本文介绍了外部防雷接地系统和内部防雷接地系统两大部分。外部防雷保护接闪器、引下线和接地装置三部分,即通过外部防雷装置吸引雷电并尽快将雷电流引入地中安全泄放。内部防雷主要包括等电位连接、安装SPD浪涌保护器及综合布线等部分,也就是通过这几部分防止雷电和其他形式的过电压侵入设备中造成的毁坏,这是外部防雷系统所无法保证的。
将该工程应用到实践中去,综合大厦内的各项设备在雷雨天气都能够安全正常的运行,可圆满地完成毕业设计任务书中的要求。
关键字: 防雷;大厦;系统
Grounding For Lightening System Design Of
New Campus’ comprehensive Teaching Building
Abstract: Lightning Protection problem has been a major concern in the world. Lightning stroke not only directly destroys the grounding objectives but the Produced electromagnetic field will threaten the electrical equipment especially the electronic equipment by coupling. Lightening protection technology is necessary to investigate the features and laws of lightning stroke so as the corresponding measures can be taken to protect the building and electronic devices in it.
The lightening protection of new campus’ teaching building is designed in this paper. The design and selection of lightning protection and grounding system are introduced, use the combination of lightening protection zone and lightning network to protect the teaching building.
The article describes the external lightning protection system and internal lightning protection system.The external lightning protection system include flash-grounding device,deflectors and grounding. Namely, by using an external lightning protection device to attract lightning, the lighting current is introduced to the ground. The internal lightning protection system include equipotential bonding, common earthing system, surge protective device. The parts prevent lightning and other forms of over-voltage damage, which the external lightning protection system can not be guaranteed. Put it into practice ,the teaching building can used as normal when the weather is bad. This system can meet the requirement of design task book perfectly.
Key Words: lightening ; teaching building; system
目 录
1. 概 述
1.1 课题来源及基本技术要求
1.1.1课题来源
1.1.2基本技术要求
1.2 主要设计内容及设计思路
1.2.1主要设计内容
1.2.2设计思路
1.3 预期成果及其意义
2. 南宁天际大厦防雷接地系统方案的设计论证与选择
2.1综合大厦防雷接地系统总体设计
2.2 方案设计
2.3方案论证
3.南宁天际大厦外部防雷接地系统设计
3.1接闪器
3.2引下线
3.3接地装置设计
3.3.1接地电阻的计算
4.南宁天际大厦内部防雷接地系统及其设计
4.1分区、分级的SPD防护
4.1.1导线截面的选择
4.2等电位连接和共用接地系统
4.2.1等电位连接技术
4.2.2共用接地技术
4.3电子计算机机房及计算机网络的防雷接地保护
4.3.1电子计算机机房的雷电保护
4.3.2传输网络的雷电防护
4.4天馈线路的防雷与接地
4.5综合布线系统
5. 工程概况及安装说明
5.1 工程概况
5.2 具体安装
6. 结束语
参考文献
致 谢
附 录
附录1防雷系统设备清单















