Abstract:

Contrary to the problem of mining machine into line overhead line lightning,lightning protection standards from the differences and intensification of into line with protect clearance and line insulator insulation coordination,maked out reform measures that reducing line lightning arrester grounding resistance grounding body and replace the wind machine room with double zigzag lightningproof transformer .When lighting current takes 5mA,the line side fan room impulse voltage 81.33 kV reduced to 12.56 kV.At the same time,using ATPEMTP transient simulation software to simulation the line insulator parallel gap and line lightning arrester grounding resistance,validation the effect of lightning protection measures .

Key words: ray waves;the wind machine room;insulator;lightning arrester;grounding resistance;ATP EMTP