35kV power transmission line comprehensive lightning protection method
A technology for transmission lines and comprehensive lightning protection, which is applied in the installation of electrical components, varistors, cables, etc., and can solve problems such as narrow application scope, no consideration of line operating conditions, and large limitations of lightning protection measures.
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[0024] figure 1 A comprehensive lightning protection method for a 35kV transmission line is shown, including the following steps:
[0025] (1) Obtain the lightning density, topography, and historical operation records of each tower in the 35kV transmission line in the past five years, and divide the towers into light mine areas, medium mine areas, multiple mine areas, and strong mine areas according to the risk of lightning damage . specifically:
[0026] When the lightning density of the tower is less than or equal to 0.78 times / (km 2 .a) or the tower is located in a valley, then the tower is directly in the light minefield;
[0027] When the lightning density of the tower > 0.78 times / (km 2 .a), and the line connected to the tower is not in the suburbs or rural areas, it is determined that the tower is in the middle minefield;
[0028] When the lightning density of the tower > 0.78 times / (km 2 .a), and the line connected to the tower is in the suburbs or rural areas, b...
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