Overhead distribution line pole anti-overturning capability simulation checking method

Abstract

The invention provides a simulation checking method for anti-overturning capability of an overhead distribution line electric pole, and belongs to the field of electric pole stability checking.The method comprises the steps that firstly, geometric dimensions of an electric pole and a foundation computational domain are determined, and a geometric entity model of the electric pole and the foundation is established based on ANSYS software; secondly, determining a grid type and a grid size, establishing an electric pole and foundation numerical value grid model, and importing the model into FLAC3D software; then, selecting a proper constitutive model and a yield criterion, determining physical and mechanical parameters of the electric pole and a foundation rock-soil body, and setting initial conditions and boundary conditions of calculation; and finally, in combination with an external load condition, completing simulation solution of the model based on FLAC3D software, and in combination with a solution result, judging whether the electric pole of the overhead distribution line overturns or not. The method is low in cost, short in time consumption and high in repeatability, can directly observe the deformation and damage process of the rock-soil body, can effectively simulate the actual process of anti-overturning checking of the electric pole, provides a basis for prevention and treatment of electric pole overturning, and improves the extreme weather handling capacity of an urban and rural power distribution network.

Description

technical field [0001] The invention belongs to the field of pole stability checking, in particular to a simulation checking method for the anti-overturning ability of an overhead distribution line pole. Background technique [0002] In recent years, severe or extreme weather such as strong winds, short-term heavy precipitation, and icing have occurred from time to time, posing a great threat to the safe operation of distribution networks, especially urban and rural distribution networks. Among many power distribution equipment, overhead distribution line poles play a pivotal role. This is because once the poles overturn, the tension will be transmitted through the wires, causing the nearby connected poles to collapse, which will affect the local area or even the entire power distribution. The power supply of the line is threatened, which has a huge impact on the normal production and life of residents. Therefore, in the planning and design process of the power distribution...

AI Technical Summary

Problems solved by technology

However, there is still a certain gap in the research on the simulation verification method of the anti-overturning ability of overhead distribution line poles.

[0004] In the prior art, for example, the patent document with the publication number CN112084635A discloses a method and system for overturning stability verification of the transmission pole foundation, and the patent with the authorized announcement number CN109443307B discloses a settlement and inclination angle based on optical measurement of the transmission pole tower. None of the existing measurement systems and methods can provide a basis for the prevention and control of pole overturning by simulating the actual process of pole anti-overturning check

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