摘要
文章按雷击杆塔顶部时所产生的雷电过电压的作用顺序,将线路避雷器与杆塔绝缘子串的并联安装方式分为雷电过电压先后作用于两者、同时作用于两者及先作用于后者,再作用于前者等3种安装方式,分析了3种安装方式对线路避雷器防雷效果的影响。文中还建议改进线路避雷器的安装方式,提出了新的安装方式,使雷电直击杆塔或绕击导线时所产生的雷电过电压先作用线路避雷器,或同时作用于线路避雷器与杆塔绝缘子串,以有效发挥线路避雷器的防雷保护作用。
According to sequence of producing lightning over-voltage when the lightning on top of tower, the parallel connection for line lightning arrester and tower insulator string can be divided into 3 kinds of installation way, first is the lightning over-voltage to line lightning arrester then to tower insulator string, second is in two at the same time, third is to tower insulator string then to line lightning arrester. The influence of 3 kills of installation way on effect of lightning protection was analyzed. The paper suggested to improve the installation way of line lightning arrester, and put forward the new installation way, which make lightning over-voltage go to line lightning arrester ftrstly, or at the same time to line lightning attester and tower insulator string in order to make the effect of lightning protection of line lightning arrester efficiently.
出处
《电力设备》
2007年第5期65-66,共2页
Electrical Equipment
关键词
输电线路
防雷保护
线路避雷器
电力系统
transmission line
lightning protection
line arrester
power system
