A form-finding method for ice-covered transmission lines based on finite particle method

Abstract

The present invention discloses a method for form-finding an ice-covered transmission line based on a finite particle method. The method comprises the following steps: initializing the particle attribute, setting the path unit and solving the motion equation, and finally updating the coordinates and the internal force. According to the method disclosed by the present invention, by solving the motion equation and by carrying out updating iteration on the correlation quantity, the ice-covered position and shape can be finally found; the problem that the modeling is complicated and cumbersome in the transmission line form-finding process in the existing finite element software can be solved, and different complex scenes can be simulated; and the method is applicable to multiple situations such as height difference, no height difference, uniform icing, non-uniform icing, and the like, and has a wide application range.

Description

technical field [0001] The invention belongs to a form-finding method for a transmission line, in particular to a form-finding method for an ice-covered transmission line based on a finite particle method. Background technique [0002] Today, with the rapid economic development, electric energy has become an indispensable resource for social development and people's normal life. China has a vast territory, but the distribution of energy and resources is not balanced. Ensuring the transmission of electricity has become a major issue related to the national economy and people's livelihood. Various mechanical calculations and analyzes of transmission lines are the basis for ensuring the safety and stability of the power grid. As a flexible cable structure, the transmission wire is only subjected to tension but not compression, and its low stiffness is easily affected by the outside world. As one of the common loads on the transmission wire, the icing load has a great impact on ...

AI Technical Summary

Problems solved by technology

However, finite element software has many steps in modeling, and form finding is complex, cumbersome and error-prone. Form finding in different scenarios starts with modeling, and it is not easy to simulate a large number of scenarios

However, although the form-finding of transmission lines using the finite element method self-programming can simulate a large number of complex scenes, it forms a complex nonlinear stiffness matrix during the solution, and the iterative calculation is cumbersome.

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