A risk assessment method for icing of overhead transmission lines based on gis model

Abstract

The present invention provides a GIS model-based icing risk assessment method for overhead transmission lines, comprising: (1) acquiring geographical outlines in transmission line corridors and equipment cloud data of tower lines, generating a three-dimensional visualization model of digital line corridors and determining line types; (2) Obtain the icing radius of the line; (3) Obtain the average height and the minimum sag height of each conductor; (4) Use the results of (2) and (3) to determine the amount of icing per unit cross-sectional area of ​​the transmission line; ( 5) Using the above results combined with the line route information, use the ansys mechanical analysis module to output the calculation report of the icing force of the transmission line; (6) determine the icing risk level of the transmission line in different regions according to the calculation report of the icing force and the design stress value of the corresponding equipment . The invention is used for icing risk assessment of overhead lines and transmission lines, can greatly reduce the input of manpower and material resources in related measurement work, and can simultaneously acquire on-site real-time data quickly, safely and accurately.

Description

technical field [0001] The technical field of disaster prevention and mitigation of transmission lines of the present invention is specifically a GIS model-based method for assessing the risk of icing on overhead transmission lines, which utilizes drones equipped with 3D dual cameras combined with GIS to obtain overhead transmission line corridor data, and realizes it through a series of algorithms Real-time automatic assessment of icing risks on overhead transmission lines. Background technique [0002] In recent years, overhead transmission lines have been significantly affected by typical regional natural disasters of ice and snow, resulting in frequent tripping of lines and even accidents of broken towers, resulting in large-scale power outages and affecting the safe and stable operation of the power grid. Therefore, preventing the occurrence of typical disasters has become a key problem urgently needed to be solved on transmission lines, and how to evaluate the impact o...

AI Technical Summary

Problems solved by technology

At present, the simple evaluation method based on operation inspection information is mainly used to evaluate transmission lines. Due to the large amount of information on the status characteristics and mechanical properties of line equipment, the workload of equipment analysis and evaluation is also large, and the accuracy of evaluation results is not high. Very high, unable to truly and accurately reflect the actual state of the transmission line

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