Abstract According to the lightning research results, which are based on overhead line (OHL) on the viaduct of Tianjin-Binhai Light Rail Project, this paper summarizes the calculation method of lightning protection design which could be used for OHL engineering design on the ground and viaduct line. In addition, the cases of OHL suffered lightning in different thunderstorm days, different OHL height to the ground, and different protection measures are analyzed. Finally, engineering design guidelines of lightning protection for overhead line are presented by differentiated protection principles, which can be applied in the future in metro’s OHL on the ground and viaduct.


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