Radial Temperature Simulation Method of ACSR Based on ANSYS APDL and ANSYS CFX
A technology of steel-cored aluminum stranded wire and simulation method, which is applied in software simulation/interpretation/simulation, data processing applications, instruments, etc., and can solve problems such as unconsidered and unfavorable 3D sag model establishment.
Active Publication Date: 2019-06-18
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
The radial temperature distribution calculated by this method does not take into account the influence of the existence of the air gap between the conductors on the radial heat transfer of the conductors and the influence of the skin effect on the distribution of the heat source of the conductors, so the final results are consistent with the experimental results There is a large gap between them, which is not conducive to the establishment of a three-dimensional sag model
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[0056] This embodiment combines the LGJ300 / 40 type wire as the simulation object, and proposes a radial temperature simulation method for ACSR based on ANSYS APDL and ANSYSCFX, but this method is not limited to the LGJ300 / 40 type wire, LGJ 300 / 40 The 2D cross-sectional view of the type wire is composed of four layers, from inside to outside, there is a steel core with the center of the circle at the center of radius 1.33mm, and six steel cores with the center of the circle evenly distributed on the circle with the radius of 2.66mm and the radius of 1.33mm. , Nine aluminum cores with a radius of 1.995mm evenly distributed on a circle with a radius of 5.985mm, and fifteen aluminum cores with a radius of 1.995mm evenly distributed on a circle with a radius of 9.975mm. On the basis of the existing wire model, an air layer with a radius of 0.2 meters is added outside.
[0057] The specific method includes the following steps:
[0058] S1, ANSYS APDL finite element model constructi...
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Abstract
The invention discloses a radial temperature simulation method for a steel-cored aluminum strand based on an ANSYS APDL (ANSYS Parametric Design Language) and an ANSYS CFX. The method comprises the following steps of: S1, constructing an ANSYS APDL finite element model, and calculating to obtain a function J(r) of an electric current density varying with r(m) through selecting a unit, setting materials, dividing grids, applying a load and applying a boundary condition; S2, constructing an ANSYS CFX finite element model, and calculating to obtain a temperature K3 of a highest temperature point and a temperature K2 of a lowest temperature point in a lead wire through setting the materials, setting a solution domain, dividing grids, applying the load and applying the boundary condition; and S3, carrying out loop iteration on the ANSYS APDL finite element model and the ANSYS CFX finite element model to obtain a temperature field distribution of the steel-cored aluminum strand.
Description
technical field [0001] The invention relates to the technical field of radial temperature simulation of aluminum-steel stranded wires, in particular to a method for simulating the radial temperature of aluminum-steel stranded wires based on ANSYS APDL and ANSYS CFX. Background technique [0002] With the rapid development of the economy, the electricity consumption has also increased rapidly, which has promoted the construction of the power grid. However, in the current situation, the transmission corridor still limits the construction and development of the power grid to a certain extent. The construction of new transmission corridors requires a lot of money and time, and will not alleviate the shortage of transmission corridors in the short term. Therefore, how to make full use of the power transmission capacity of the existing lines has become a problem of practical significance. [0003] At present, the mainstream technology of transmission line capacity expansion incl...
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IPC IPC(8): G06F9/455G06Q50/06
CPCG06F9/45504G06Q50/06
Inventor 刘刚李炀陈垣陈宇航
Owner SOUTH CHINA UNIV OF TECH