Detailed terrain data-based transmission line failure-shielding and lightning-protection performance evaluation method
A technology of transmission lines and terrain data, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problem of small calculation value of shielding trip rate, inability to accurately reflect the influence of terrain shielding lightning protection performance, and ground fluctuations Larger problems, to achieve the effect of refined management of power grids, true and reliable evaluation results, and improved lightning protection performance
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[0026] Hereinafter, the embodiments of the present invention will be further described with reference to the accompanying drawings.
[0027] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Picture 9 As shown, the present invention uses line information that needs to be evaluated for shielding lightning protection performance, including line basic information, line geographic information, line structure characteristics, line insulation characteristics, and uses GIS software to scan the three-dimensional coordinates of the transmission line corridor. The three-dimensional coordinates of the scanning points in the vertical direction of the line corridor determine the landform and ground inclination along the line. The three-dimensional coordinates of the scanning points along the line determine the height change of the ground guide line caused by the ground ups and downs. The fine terrain data extracted based on the three-dimensio...
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