doi:

DOI: 10.3724/SP.J.1201.2011.01148

South-to-North Water Diversion and Water Science & Technology (南水北调与水利科技) 2011/9:1 PP.148-150

Lightning Protection and Grounding of Building in the First Phase in Handan-Xingtai Section of the Middle Route of South-to-North Water Diversion Project


Abstract:
Based on the condition of the South-to-North Water Diversion Project,this paper introduces the lightning protection principles of hydrostructure and electrical equipments according to the reasons of lightning from three aspects,namely using air-termination and earth-termination system to discharge lightning current,protecting against lightning surging on incoming services and limiting over-voltage on equipments.There are five primary protection measures:distributaries,voltage sharing,shield,grounding and clamp protection.In the design of lightning protection,natural earth electrode is adopted with priority supplemented by artificial earth electrode in order to reduce the cost.Double or treble-deck grounding grid is designed for flumes,hoist chambers,transformer substations and other buildings so as to protect the equipments and discharge lightning current through grounding.

Key words:the South-to-North Water Diversion Project,building,lightning protection,measures

ReleaseDate:2014-07-21 15:59:15



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