新型透波接闪杆在X波段天气雷达防护中的应用
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

秦岭和黄土高原生态环境气象重点实验室项目(2019M-4)资助


Application of New Wave-Transparent Lightning Rod in Protection of X-band Weather Radar
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    针对X波段天气雷达受金属接闪杆或金属引下线干扰时出现反射率、差分反射率等参数劣化的问题,本文采用精细设计的非连续片段式金属箔片阵列作为引下线的导流结构,与高性能复合材料杆相结合设计了新型透波接闪杆,成功解决了透波与雷电通流的难题:接闪杆导流结构接闪时受雷电电场激发形成连续等离子体通道,成为承载雷电流通路;非连续的金属箔片大幅降低了雷达反射率。为验证新型透波接闪杆防护与透波能力,开展了试验测试:①高压附着接闪与冲击通流能力测试,结果表明新型透波接闪杆平均击穿阈值为4.45 kV/cm,冲击通流能力大于150 kA(±10%,10/350 μs波形),满足GB50057和QX/T2-2016标准规定的第二类建筑雷电防护要求;②实地安装试验测试,结果表明相较于金属接闪杆,新型透波接闪杆对雷达反射率、差分反射率等关键参数的影响大幅降低。本文研究的新型透波接闪杆能够降低避雷系统对雷达探测性能的影响,可以在类似相控阵雷达直击雷防护中进一步应用和推广。

    Abstract:

    To solve the deterioration problem of the reflectance, differential reflectance and other parameters when the X-band phased array weather radar is interfered with by metallic lightning rods and metallic down-conductor systems, the segmented metal foil array is used as the guiding structure of the down-conductor system, and a new type of wave-transmitting lightning rod is designed in combination with a high-performance composite rod, successfully solving the problem of wave transmittance and lightning current: a continuous plasma channel is formed by the lightning electric field, which can be used as a lightning flow path; the radar reflectivity is greatly reduced by the discontinuous special metal foil. In order to verify the protection and transmission capability of the wave-transparent lightning rod, tests are carried out: (1) the test of the high voltage attachment point and impulse discharge capacity, the average breakdown threshold of the wave-transparent lightning rod is 4.45 kV/cm, and the impulse discharge capacity is greater than 150 kA (±10%, 10/350 μs), which meets the requirements of the second level lightning protection stipulated in the GB50057 standard; (2) the field installation test, the test results show that the influence of the new type of beam on radar reflectance and differential reflectance is greatly reduced. The new wave-transparent lightning rod can greatly reduce the negative influences of the lightning protection system on radar detection performance and can be further applied and popularised in direct lightning protection of similar phased array radar.

    参考文献
    相似文献
    引证文献
引用本文

杨碧轩,毛峰,邓凤东,白水成,何征,王策,何相勇.新型透波接闪杆在X波段天气雷达防护中的应用[J].气象科技,2024,52(6):898~904

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-11-02
  • 定稿日期:2024-10-09
  • 录用日期:
  • 在线发布日期: 2024-12-25
  • 出版日期:
您是第位访问者
技术支持:北京勤云科技发展有限公司