青藏铁路格拉段雷暴活动与防护原则的研究

Study on Thunderstorm Activity and Lightning Protection Principle of Ge'Ermu to Lasa Segment within Qinghai-Tibet Railway

青藏铁路格拉段经过青藏高原腹地,该地区有特殊的地理环境和自然气候,为了掌握格拉段在高原特殊地理、气候条件下电气设备的防雷、接地方式和原则,有必要对铁路沿线的雷暴活动和特点进行深入的研究。文章介绍了高海拔和高原气候情况下青藏线沿线雷暴独特的活动规律,总结分析了沿线的雷暴活动情况和雷电流特性,对该线路防雷工程的设计、施工方式提出了建议,为开展沿线防雷接地工程和雷电防护提供了理论基础。

Qinghai-Tibet railway passes through the Qinghai-Tibetan Plateau. This area has its particular geography circumstance and special climate, which has huge influence on design and realization of power supply system of Qinghai-Tibet railway. It is important to realize the methods of lightning protection and establish the grounding system in Qinghai-Tibetan Plateau. In this paper, the unique thunderstorm regular pattern based on high elevation and local climate is introduced. The thunderstorm condition and characteristics of thunder current are analyzed. Some methods about lightning protection in Qinghai-Tibetan Plateau are also recommended. The analysis results provide a helpful reference to electrical design and engineering of the project.