Design of Lightning Protection Devices under High Soil Resistivity
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Abstract:
In order to identify the difference of the lightning protection device design of radar station under high soil resistivity condition, the lightning protection devices for new generation weather radar stations in Sanming of Fujian Province are discussed, based on the location analysis in combination with the characteristic of high soil resistivity. The common grounding system is used, and the design value of grounding resistance is less than 4 Ω. In order to fill the design requirements, the project took such methods as the loose ground net, steel grounding, deep well grounding device, external ring grounding device, etc. for grounding device construction. The deep well method and cage type discharge pit grounding can be applied in the high soil resistivity area. The zero potential drift method can be used in the grounding resistance test of complex soil environments. The practice shows that the lightning protection devices of this station have been running more than a year without damaged by thunders and lightning, and have reached the requirements of lightning protection and grounding protection. This study can be used as a reference in other designs and construction of high soil resistivity grounding devices.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.