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Method of testing wind load of 1000kV ultra-high voltage substation framework through wind tunnel experiment

A technology of wind tunnel test and substation structure, which is applied in the field of civil engineering, can solve the problems of poor calculation accuracy of wind load, etc., and achieve the effect of comprehensive and detailed steps, simple process and accurate wind tunnel test results

Inactive Publication Date: 2019-09-06
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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Problems solved by technology

[0003] The present invention aims to solve the technical problem of poor calculation accuracy of wind load of 1000kV UHV substation structure, and provides a method for testing wind load of 1000kV UHV substation structure through wind tunnel test

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  • Method of testing wind load of 1000kV ultra-high voltage substation framework through wind tunnel experiment
  • Method of testing wind load of 1000kV ultra-high voltage substation framework through wind tunnel experiment
  • Method of testing wind load of 1000kV ultra-high voltage substation framework through wind tunnel experiment

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Embodiment 1

[0081] Embodiment 1: The method for testing the wind load of the 1000kV UHV substation frame through the wind tunnel test of the present embodiment is carried out according to the following steps:

[0082] Step 1: Prepare a rigid model according to the actual shape of the 1000kV UHV substation frame. The photo of the model is as follows figure 1 As shown, the linear structure of the model is as follows figure 2 As shown, the horizontal structure is as image 3 shown. The model is made of SLA polymer photosensitive resin as raw material and 3D printing technology. The overall model is divided into five segment models: I, II, III, IV, and V; middle truncation, such as Figure 4 As shown, the segmentation diagram of the five segment models I, II, III, IV, and V is as follows Figure 5 As shown, 1 is the I-segment model, and its photo is shown in Image 6 as shown; 2 is the segment II model, and its photos are shown in Figure 7 as shown; 3 is the segment III model, and its...

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Abstract

Disclosed is a method of testing a wind load of a 1000kV ultra-high voltage substation framework through a wind tunnel experiment, which relates to a method of testing a wind load and aims to solve the technical problem of low accuracy in calculating the wind load of the 1000kV ultra-high substation framework. The method comprises: preparing a model satisfying a blocking ratio of a wind tunnel, and comparing a cross section of an average wind speed measured at a section of the wind tunnel experiment and a cross section of a turbulivity respectively with code values in Load Code for the Designof Building Structures to determine accuracy of a simulated wind field; checking accuracy of a high-frequency force measuring balance through absolve values of a base shear force of the model in directions X and Y at 0 or 90 DEG of the high-frequency force measuring balance, then performing the wind tunnel experiment under each wind direction angle, representing the measured base shear force of the model and bending moment with dimensionless coefficients and obtaining a pneumatic force coefficient and a shape coefficient so as to calculate the value of the wind load. Using a section model, themethod can determine distribution ratio of the wind load of the overall framework and improve calculation accuracy, such that it can be applied in the design of a lattice form high-rise tower structure.

Description

technical field [0001] The invention relates to a test and calculation method for wind load, belonging to the field of civil engineering. Background technique [0002] In recent years, with the improvement of residents' living standards and the continuous increase in the demand for power resources in industrial production, the power transmission volume has continued to increase, and the substation structure in the power transmission system has become higher and higher, and its safety and reliability have attracted widespread attention from the society. Compared with the traditional building structure, in addition to overcoming the dynamic characteristics of the wind load itself, the substation structure also needs to consider the complex force generated by the interaction between the wind and the structure. Wind vortex shedding, turbulence, and torsion along the height direction may also produce significant vibration, which increases the complexity of wind load distribution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/08G01M9/02
CPCG01M9/02G01M9/08
Inventor 商文念翟彬刘建秋王慧慧甘露韩文庆盖超魏珍中刘勇王玉宝宋嘉庆李林李洪旺李治国穆德君阴琪翔
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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