摘要
为评估设备信息系统的雷击风险,提出了一套计算天线阵列受到直击雷、绕击雷和感应雷等3种情况下年雷击损坏次数和雷击损坏概率的方法,直击雷计算直接采用《建筑物防雷设计规范》(GB50057-1994)中的算法,绕击雷借用输电线路的计算方法,感应雷则通过计算雷电电磁场来算出感应电压。依据该法借助ATP仿真软件评估了某通信基站大线阵列的雷击风险,并给出了一套3级保护方案。
This article presents a method, which can be used to evaluate the risk of lightning strike on equipment information systems, to calculate the stroke-incidence rate under the condition of direct lightning strike, shielding failure and indirect lightning strike for antennae array. The calculation of direct lightning strike directly adopt the method introduced in the 《Design code for protection of structures against lightning》（GBSO057-1994）. The calculation of shielding failure uses the method integrating the Electro-geometric Model （EGM） and the Alternative Transients Program （ATP） simulation analysis, regarding the outside line of antennas as a ground wire. To evaluate the stroke-incidence rate under the condition of indirect lightning, the inductive voltage should be worked out first. The electromagnetic field produced by return strike of lightning is used to gain the value in this article. The ATP simulation analysis is still used then to get the last stroke-incidence rate. The method has been used for an actual antenna array system to design a three-step protection project, which has worked successfully and has been listed in the article.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2006年第4期28-30,共3页
High Voltage Engineering
关键词
天线阵列
雷击损坏概率
评估
保护
方案
antennae array
stroke-incidence rate
evaluation
protection
scheme
