From the perspective the characteristic of shunt coefficient (α)of UHV tower,a modified multi-wave imped-ance model was established considering the structural characteristics of UHV tower,and the effects of ground resistance,gear distance and lightning current amplitude on the shunt of UHV tower were analyzed by ATP/EMTP simulation.The results showed that there is a negative correlation between the grounding resistance of UHV tower and α,which is weaker than that of ordinary transmission lines and positively correlated with the span.And when the gear spacing exceeds 400m,the growth trend decreases significantly and tends to be constant.
关键词
特高压/杆塔/分流系数/雷击/波阻抗模型
Key words
ultra-high voltage/tower/shunt coefficient/lightning strike/multi-wave impedance model
维普
万方数据