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A method and device for determining the return period of extreme wind speed considering the extreme wind speed

A technology for determining the method and return period, applied in design optimization/simulation, geometric CAD and other directions, can solve the problems of inaccurate design wind speed, difficult to verify the return period of extra-large value, etc., and achieve the effect of wide applicability

Active Publication Date: 2022-06-07
CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the difficulty of verifying the return period of the extra-large value when using the maximum 10-min average wind speed sequence over the years containing the extra-large value to carry out frequency analysis and calculation of the design wind speed at present, or to directly eliminate the extra-large value and ignore the influence of the return period on the sample frequency distribution , leading to the problem that the frequency distribution model uses the annual maximum wind speed extreme value sequence to analyze and design the wind speed inaccurately, a method and device for determining the return period of the extreme wind speed considering the extreme wind speed value are proposed

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  • A method and device for determining the return period of extreme wind speed considering the extreme wind speed
  • A method and device for determining the return period of extreme wind speed considering the extreme wind speed
  • A method and device for determining the return period of extreme wind speed considering the extreme wind speed

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[0058] The present invention will be further described below in conjunction with the accompanying drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0059] The present invention selects a meteorological station as a case. The meteorological station was built in 1959. From 1960 to 2014, the measured average wind speed at a height of 10m above the ground and the maximum 10min is as follows: figure 1 As shown in Table 1, the average wind speed of the maximum 10min over the years at a height of 10m above the ground is shown in Table 1.

[0060] Table 1 The maximum 10min average wind speed sequence of a meteorological station at a height of 10m above the ground

[0061]

[0062]

[0063] (1) Select the extra-large value sequence

[0064] The maximum 10min average wind speed sequence over the years is arranged in d...

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Abstract

The invention discloses a method and a device for determining the return period of the extreme wind speed considering the extremely large value of the wind speed. The method of the present invention checks and selects the extra-large value in the sequence of the maximum 10-min average wind speed over the years; by constructing the calculation method of expectation and mean square error in the case of containing the extra-large value, on the basis of empirical frequency calculation, the Gumbel extremum is estimated The location parameters and scale parameters of the distribution model, and iteratively try to calculate the return period of the super large value until the error requirements are met, and the final return period and distribution model parameters are obtained. The method of the invention can effectively solve the problem of unreliable design wind speed values ​​caused by inaccurate estimation of the return period of extra large values ​​when the frequency distribution model is used to analyze the maximum 10-min average wind speed sequence over the years. The method of the invention provides a reliable method for estimating the return period of the extra-large value, and the design wind speed obtained on this basis can ensure reliable engineering wind resistance.

Description

technical field [0001] The invention relates to the technical field of structural wind resistance, and in particular relates to a method and a device for determining the return period of extreme wind speed considering the extreme value of wind speed. Background technique [0002] In the engineering wind resistance field system, it is necessary to calculate the design wind speed to ensure the reliability of the wind resistance structure design. The value of the design wind speed is generally calculated by frequency analysis and calculation using the maximum 10-min average wind speed sequence of the weather station in the area where the project is located. [0003] With the appearance of extreme weather, there is often a large value deviating from the center of the sequence point group in the maximum 10-min average wind speed sequence over the years. Without special treatment or accurate estimation of the return period of the super-large value, the Gumbel extreme value distri...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/13
CPCG06F30/13G06F30/20
Inventor 王晓惠张洋巫黎明程春龙石军潘晓春沈旭伟王鹏刘灿
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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