电力防雷系统的设计概述.doc

PAGE PAGE 3 电力防雷系统的设计 摘要 面对科技化的社会、国际化的中国，电力事业所占比重越来越大。电在日常生活中愈来愈重要。面对科技化的社会、国际化的中国，电力事业所占比重越来越大。电在日常生活中愈来愈重要。但自然现象雷电却威胁着世界上所有的高层建筑物和供电系统，不仅会使电力系统设备损坏，有时甚至还可能让整个电力系统瘫痪，造成难以估量的损失，会给人们的生活工作出行带来极其严重的影响。 直到现在，为了减少雷电事故的发生，提高供电的安全性和稳定性，人们积极采用多种防雷措施对电力系统进行保护。常用的措施有架设避雷线、安装避雷针和避雷器或采用接地保护，限制、降低、转移雷电事故发生时所产生的雷电过电压或过电流，从而保护建筑物和电力系统免遭雷击毁坏。 在高层建筑物上安装避雷装置不仅增加了其安全性还提高了土地的利用率，对于电力系统的防雷，不同的电力设备采用的相对应的防雷措施，既保证各设备安全稳定运行，又避免了各种雷击事故。提供优质、可靠、安全稳定的电能，为社会的进步、国家的发展奠定了良好的基础。 关 键 词：雷电；雷电过电压；防雷保护装置；电力系统； Design of lightning protection system for electric power system abstract In the face of science and technology society, the internationalization of China, the proportion of the power industry is growing. Electricity is becoming more and more important in our daily life. In the face of science and technology society, the internationalization of China, the proportion of the power industry is growing. Electricity is becoming more and more important in our daily life. But natural lightning phenomenon is a threat to the world all high-rise buildings and power supply system, it will not only damage the power system equipment, and sometimes may even paralyze the whole power system and cause incalculable loss, will bring very serious influence to peoples life and work travel. Until now, in order to reduce the occurrence of lightning accidents, improve the security and stability of power supply, people actively use a variety of lightning protection measures for the protection of the power system. Commonly used measures have erected overhead ground wire, and lightning arrester installation or use grounding protection limit, reduce, transfer lightning accident arising from lightning overvoltage or overcurrent, so as to protect the buildings and power system from lightning damage. Lightning protection device is arranged on the high-rise buildings not only increases the safety but also improve the utilization rate of land, for lightning protection of power system, different power equipment