Elastic modulus frequency sensitivity analysis method and system of transmission wire
A technology for sensitivity analysis and transmission wire, which is applied in design optimization/simulation, special data processing applications, etc., can solve the problems of no development of transmission wire nonlinear cable unit, no transmission wire parameter sensitivity analysis, etc., and achieve the effect of high calculation accuracy
Inactive Publication Date: 2020-08-25
WUHAN UNIV OF TECH
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However, these conventional finite element software have not developed nonlinear cable elements for transmission lines, let alone parameter sensitivity analysis functions for transmission lines
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[0053] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0054] Such as figure 1 Shown, a kind of elastic modulus frequency sensitivity analysis method of transmission wire of the present invention,
[0055] First determine the coordinates of the transmission line and other information. Further determine the physical parameters and load parameters such as the self-weight and external load of the transmission wire. The element coordinate system and strain expression of the transmission wire are established, and the elastic modulus sensitivity of the stiffness of the transmission wire is established. Further deduce and establish the sensitivity matrix of elastic stiffness, the s...
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Abstract
The invention discloses an elasticity modulus frequency sensitivity analysis method and system for a transmission conductor. The method comprises the steps as follows: geometrical information of nodecoordinates of the transmission conductor is determined firstly, and elasticity modulus, self-weight, external load and other physical parameters and load parameters of the conductor are determined; astiffness matrix of the transmission conductor unit is represented as the sum of an elastic stiffness matrix, an initial displacement stiffness matrix and an initial stress stiffness matrix; elasticity modulus frequency sensitivity of elastic stiffness, elasticity modulus frequency sensitivity of initial displacement stiffness and elasticity modulus frequency sensitivity of initial stress stiffness are established, an elasticity modulus frequency sensitivity calculation method for the transmission conductor is established, and the effects of the elasticity modulus of a material on power performance of the transmission conductor are analyzed and calculated. The method has the advantages of wide application range, high analysis accuracy and convenience and quickness in calculation.
Description
technical field [0001] The invention relates to a technology for evaluating the structural performance of a power transmission line, in particular to a method and system for analyzing the elastic modulus frequency sensitivity of a power transmission wire. Background technique [0002] Transmission wires, an important power infrastructure, have been in open-air service for a long time and are subject to wind, sun, and various environmental effects, so they are prone to damage accumulation and failure damage under external loads. In recent years, there have been many accidents of damage and destruction of transmission wires under the action of strong wind, high temperature and corrosive environment at home and abroad. Damage to transmission wires will lead to interruption of power transmission, resulting in serious economic losses and secondary disasters. Therefore, it is of great scientific significance and practical engineering value to carry out the service performance eva...
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IPC IPC(8): G06F30/23
CPCG06F30/23Y02E60/00
Inventor 陈波陈国华程海峰陈家鑫
Owner WUHAN UNIV OF TECH