Automatic meteorological station wind speed data processing method aiming at overhead transmission line

Abstract

The invention provides an automatic meteorological station wind speed data processing method aiming at an overhead transmission line. The processing method comprises the following steps: A) carrying out data acquisition and data correction which aim at meteorological station wind speed; B) resampling an automatic meteorological station wind speed sequence; C) establishing the numerical characteristics of the automatic meteorological station wind speed sequence; and D) establishing and optimizing an extreme value wind speed probability distribution model of an automatic meteorological station. The processing method introduces a wind speed sequence resampling method, expands the sample amount and the statistics representativeness of the short-time wind speed data of the automatic station, establishes the extreme value wind speed probability distribution model of an automatic meteorological station, and quickly reckons the design wind speed of transmission line engineering.

Description

technical field [0001] The invention belongs to the technical field of transmission line engineering design, and in particular relates to a method for processing wind speed data of weather stations for the design wind speed of overhead transmission lines. Background technique [0002] The design wind speed is required as the input condition in the link of tower type selection, span control, wind load and wind deflection calculation in the line engineering design stage. The design wind speed of overhead transmission lines is mainly determined based on the wind speed data of long-term meteorological stations near the line corridor, the "Code for Loading of Building Structures" GB50009-2012, and the design wind speed of existing lines in the same area. Therefore, the wind speed data of the meteorological station is the basic data of the overhead transmission line project. [0003] The "Code for Loading of Building Structures" GB50009-2012 stipulates that the annual maximum win...

AI Technical Summary

Problems solved by technology

The reality is that most meteorological stations with long-term wind speed observation data are located in the suburbs of cities, and the number of stations is relatively small, and the spatial distribution is relatively sparse.

And with the acceleration of urbanization, the wind measurement environment of the above-mentioned meteorological stations has undergone major changes, which can no longer objectively reflect the wind speed in the open field areas where the line project passes.

[0004] At present, automatic weather stations have been widely distributed in townships and townships and have been networked to observe, which can effectively make up for the shortcomings of the long-term scarcity of weather stations and insufficient spatial representation; however, the observation time of most automatic weather stations is usually within 10 years. The length of the wind speed data sequence does not meet the statistical requirements for calculating the extreme wind speed, and there are still restrictions on the use of data

Therefore, the design wind speed of overhead transmission lines faces problems such as lack of basic data and limited representation.

Images