Overhead transmission ground wire strand contact effect analysis method and system

Abstract

The invention discloses an overhead transmission ground wire strand contact effect analysis method and system. The method comprises the following steps: determining a total stiffness matrix for overall analysis of the overhead ground wire, establishing a tension analysis method during the overall analysis of the overhead ground wire; The method comprises the following steps: determining the stresscondition under the action of dead weight and external load, establishing a fine stiffness matrix and an external load vector of the strand, establishing a nonlinear contact analysis method of the strand, determining the contact force between the strand, establishing a nonlinear iteration algorithm of the contact force of the strand, determining the stress balance equation of the whole ground wire, and analyzing and calculating the contact force of each strand of the ground wire. The system comprises an overhead ground wire parameter analysis module, an overhead ground wire stiffness matrix analysis module, an overhead ground wire tension analysis module, a braided wire stiffness matrix and external load analysis module, a braided wire stress equation analysis module and a braided wire contact stress analysis module. According to the method provided by the invention, the contact stress of each strand of the overhead ground wire can be accurately and effectively analyzed, and the finerequirement of actual engineering analysis is completely met.

Description

technical field [0001] The invention relates to a method and system for analyzing the contact effect of strands of an overhead power transmission ground wire, belonging to the technical field of overhead ground wires. Background technique [0002] Transmission line is an important lifeline project and energy transmission infrastructure, which has been widely used at home and abroad. Since transmission lines have been in field service for a long time and pass through many areas with complex terrains and climates, they are prone to damage and destruction under strong external loads such as strong winds, earthquakes, and icing, which will cause serious economic losses and secondary disasters. Therefore, it is of great scientific significance and engineering value to carry out the corresponding disaster prevention and mitigation and service performance evaluation in combination with the actual situation of my country's transmission line engineering catastrophe. The overhead gro...

AI Technical Summary

Problems solved by technology

One of the key problems is that there is still a lack of analysis methods and systems for the contact effect of overhead ground wire strands

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