紫峰大厦雷电流全波测量研究

雷电流是描述闪电放电最重要的物理量,对于雷电防护相关研究意义重大,因此,雷电流测量一直是雷电研究领域的基础性工作。为了获得自然雷电流全波波形,在南京第一高楼紫峰大厦(约450 m)楼顶的避雷针处安装了一套雷电流全波测量系统,用于长期检测雷击建筑物回击电流和建筑物上行先导电流。该系统包含两套子系统,分别由雷电流传感器、数据传输系统、数据采集系统、远程控制系统构成,能够同时测量回击电流和建筑物上行先导电流,对国内特别是华东地区高塔自然雷电流研究具有重大意义。首先对所安装的雷电流测量系统进行了介绍,对测得的两组上行先导电流波形进行了全面分析,得出高建筑物上行先导电流波形的相关特征。

Research on Zifeng Tower Lightning Current Full Wave Measurement

The lightning current is the most important physical quantity to describe the lightning discharge and is significant to the relative research of lightning protection, so, the measurement of lightning current is always the fundamental work in the lightning research area. To adopt the natural lightning current full wave shape, a set of lightning current full wave measurement system at the lightning rod of Zifeng Tower (about 450 m) is installed to monitor the stroke current of lightning stroke to building and lightning upward leader current of the building for long time. This system includes two subsystems, which consist of lightning current sensor, data transmit system, data collection system and long-distance control system re-spectively, and can measure stroke current and upward leader current of the building and have significance to the research of high tower natural lightning current in East China. In this paper, we introduce the installed lightning current measurement system firstly, and then analyze two sets of measured lightning upward leader current data comprehensively to adopt the relative characteristics of lightning upward leader current waveform of high building.