Method for correcting historical wind field observation data of meteorological station

Abstract

A meteorological station historical wind speed and wind direction correction method comprises the following steps: 1) selecting a meteorological station near a wind power plant development site to be subjected to wind resource evaluation, and collecting wind speed and wind direction observation data of the meteorological station in recent years; 2) carrying out trend analysis on the collected historical year-by-year average wind speed time sequence of the meteorological station, and judging whether the historical year-by-year average wind speed time sequence has a non-periodic significant change trend or not; analyzing a collected historical year-by-year dominant wind direction time sequence observed by the weather station, judging whether irreversible wind direction deflection occurs at certain time points or not, and judging whether the weather station is considered to be influenced by the surrounding environment or not; and 3) aiming at the weather station which is temporarily judged to be influenced, collecting satellite remote sensing image data in recent several years of the area where the weather station is located, preprocessing the original image data, and converting the preprocessed satellite remote sensing image into vector information.

Description

technical field [0001] The invention belongs to the technical field of meteorological observation, and specifically relates to a method for correcting historical wind field observation data of a weather station based on satellite remote sensing image data for physical model experiment or mathematical model calculation and analysis, which can be applied to wind energy resource assessment and climate change assessment of wind farms, etc. at work. Background technique [0002] In order to protect the ecological environment and cope with climate change, vigorously developing clean energy has become an important strategy to ensure my country's energy security. As a pure, pollution-free green energy, wind energy is an important part of my country's energy structure. However, the complex and changeable natural characteristics of wind farms have brought great uncertainty to the economic benefits of wind power development. Accurate wind energy resource assessment is an important ba...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the prior art fails to effectively remove the influence of the historical changes of the surrounding environment of the weather station on the long-term observation results of the wind field, resulting in a large amount of historical observation data of the wind field of the weather station being unable to reflect the long-term climatic characteristics of the wind energy resources, Technical Issues That Make Insufficient Validity and Applicability in Engineering Applications of Wind Energy Resource Assessment

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