Objective

In order to ensure reliable power supply to consumers and facilities, as well as to reduce the risks of emergency situations, the main objective for FEDGC-KEG, JSC was to obtain data required to assess and monitor the technical condition of overhead power lines.

The technical condition monitoring included identifying narrow spots and wood growth in the forest clearance, determining the distances from the electric wires to the vegetation and to other overhead lines and railroad contact grid crossed, determining the accuracy of the overhead line span length, clearance width, distances to buildings and structures in the protective zone.

In order to address these objectives, an aerial survey of 110 kV overhead lines with the total length of 110 line kilometers was required.

The solution

Geoscan specialists performed aerial survey within 2 days, after which they processed the information in Agisoft Metashape Pro software and received an array of spatial data: orthophoto maps, digital terrain models and digital surface models, three-dimensional wire models.

The spatial data was loaded into the “Sputnik LEP” GIS, which automatically produced tables of input data for calculating the maximum current loads and tables with survey data for expanding the overhead line clearances (hereinafter the reports).

Results

The spatial data and reports obtained enabled the customer to assess the condition of the transmission line in terms of determining the parameters and characteristics of the overhead lines, trees and shrub vegetation within the protected area.