Analysis and Application of New Lightning Protection Equipment of Distribution Lines in Shaanxi Province

Abstract

Based on the operation situation of the lightning arresters commonly used in Shaanxi Province, a lightning arrester with multi-short-gaps is developed, which has excellent ability in extinguishing arc. It is determined through testing that the lightning arrester can act reliably with parameters of 26 in series number, 8 mm in electrode diameter, 1 mm in electrode gap clearance and 45 mm in main gap clearance; and the power frequency wet withstand voltage, the 50% lightning impulse withstand voltage, the volt-second characteristics of lightning impulse and the current cut-down ability all meet the requirements of standard. The newly developed lightning arrester operates well in typical lines in Shaanxi Province with good lightning protection performance.

Keywords

• lightning protection equipment
• continuous current
• distribution line
• lightning arrester
• lightning protection performance