An experimental test of a theory of lightning-induced voltages on an overhead wire
An experimental test of a theory of lightning-induced voltages on an overhead wire
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DOI：
10.1109/15.43631
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发表时间：
1989-11
影响因子：
2.1
通讯作者：
M. Rubinstein;A. Tzeng;M. Uman;P. Medelius;E. M. Thomson
中科院分区：
文献类型：
--
作者：
M. Rubinstein;A. Tzeng;M. Uman;P. Medelius;E. M. Thomson
给出了距离线路大于5公里处的雷击在无电架空线路上感应电压的测量值和计算值。该实验于1985年夏天在美国国家航空航天局肯尼迪航天中心进行，涉及同时测量三相电力线顶相一端的感应电压和入射在该线上的返回冲程磁场的两个水平分量。有效的地面电导率是由之前同时测量的垂直和水平电场确定的。实验分为两种情况：(1)电力线各相开路；(2)顶线一端在600 ω处终止，另一端开路，另外两相两端开路。测量电压和计算电压的波形相当一致，并讨论了观察到的差异的原因。>
Measured and calculated voltages induced on an unenergized overhead power line by lightning return strokes at distances greater than 5 km from the line are presented. The experiment was performed at the NASA Kennedy Space Center during the summer of 1985 and involved the simultaneous measurement of the voltage induced at one end of the top phase of a three-phase power line and the two horizontal components of the return-stroke magnetic field incident on the line. The effective ground conductivity was determined from previous simultaneous measurements of the vertical and horizontal electric fields. Experiments were performed for two cases: (1) all phases of the power line open-circuited, and (2) one end of the top line terminated at 600 Omega with the other end open-circuited and the other two phases open-circuited at both ends. The waveshapes of the measured and calculated voltages are in reasonably good agreement, and the reasons for observed discrepancies are discussed. >