【摘要】 特高压输电线路操作过电压的波前时间 tf 比 50 0k V输电线还长 ,可能达数 ms,故试验研究了典型棒 -板间隙和真型特高压拉 V塔相对地间隙的长波头操作冲击放电特性 ,发现按 >3 ms长波头冲击试验所得间隙小于按标准操作冲击试验所得更多还原

【Abstract】 Front time of switching impulse overvoltage in the UHV is longer line than that in 500 kV line and it maybe 200 ms. Typical rod-plate gap and UHV tower gap have been tested with long-front switching impulse. Testing result can be referenced for the equipment manufactures.更多还原