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Method for verifying aerodynamic damping of power transmission line under deicing vibration in combination with reduced scale test

A verification method and aerodynamic damping technology, applied in the fields of electrical digital data processing, instrumentation, design optimization/simulation, etc., can solve the problems of not combining scaled model tests, etc.

Active Publication Date: 2018-05-29
ELECTRIC POWER SCI RES INST OF STATE GRID XINJIANG ELECTRIC POWER +3
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Problems solved by technology

[0006] Most of the existing transmission line deicing vibrations are limited to the vibration method research, and the aerodynamic damping of the transmission line deicing vibration is not calculated in combination with the scale model test. There is no relevant literature on the calculation of the aerodynamic damping of the transmission line deicing vibration

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  • Method for verifying aerodynamic damping of power transmission line under deicing vibration in combination with reduced scale test
  • Method for verifying aerodynamic damping of power transmission line under deicing vibration in combination with reduced scale test
  • Method for verifying aerodynamic damping of power transmission line under deicing vibration in combination with reduced scale test

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Embodiment Construction

[0062] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] combine figure 1 It can be seen that the present invention provides a method for verifying the aerodynamic damping of the transmission line deicing vibration scale test, the key of which is to proceed in accordance with the following steps:

[0064] Step 1: According to the actual icing load of the transmission line, according to the set scale ratio, build a physical model of the simulated scale de-icing transmission line. For details, see figure 2 . At the same time, establish the actual transmission line software model Z;

[0065] Step 2: According to the physical model of the simulated scaled-scale deicing transmission line in step 1, establish a scaled-scale transmission line software model B; for details, see image 3 .

[0066] In this embodiment, the software model Z of the actual ...

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Abstract

The invention discloses a method for verifying aerodynamic damping of a power transmission line under deicing vibration in combination with a reduced scale test. The method is implemented by the following steps of building a simulated reduced scale deiced power transmission line physical model and an actual power transmission line software model according to an actual power transmission line; building a reduced scale power transmission line software model; importing a motion equation of longitudinal vibration of the reduced scale power transmission line to obtain a vibration air resistance expression of the reduced scale power transmission line; and importing an air resistance energy consumption expression E in a unit cycle to obtain a vibration equivalent damping expression F of the reduced scale power transmission line and a vibration equivalent damping ratio expression G of the reduced scale power transmission line, and performing verification. The method has the beneficial effectsthat by utilizing an aerodynamic damping parameter, numerical simulation calculation of the deicing vibration of the power transmission line can be performed, so that a numerical simulation calculation result of the deicing vibration of the power transmission line is more accurate.

Description

technical field [0001] The invention relates to the technical field of high-voltage power transmission, in particular to a method for verifying aerodynamic damping in a transmission line deicing vibration scale test. Background technique [0002] my country has a vast territory and complex meteorological conditions, and transmission lines are often damaged or directly collapsed under icing and deicing conditions, causing serious social impact and economic losses. At present, most studies on the dynamic characteristics of transmission line deicing use full-scale model tests, but full-scale model tests have high requirements for the site, and in the face of more and more large-scale transmission lines that require theoretical demonstration before construction, full-scale model tests are used. The model method is too expensive to conduct experiments. In contrast, the scaled-scale aeroelastic model test is more widely used, and can complete the test of a more complex and large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 游溢何成晏致涛杨小刚王欣欣赵建平刘阳崔晓东徐凯李勇杰马勤勇李伟刘欣鹏庄文兵王建
Owner ELECTRIC POWER SCI RES INST OF STATE GRID XINJIANG ELECTRIC POWER
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