Offshore wind power plant wind energy evaluation method based on sea surface roughness

Abstract

The invention discloses an offshore wind power plant wind energy evaluation method based on sea surface roughness. The method comprises the following steps: step 1, collecting basic data; step 2, examining the basic data; step 3, analyzing wind measurement data; step 4, making a wind measurement data file according to the wind measurement data after analysis; step 5, calculating each local sea area roughness value; step 6, according to a topographic map and each local sea area roughness value, making a landform file; and step 7, evaluating wind energy of a wind power plant. According to the invention, the purpose of value simplification of correlation sea surface roughness in actual projects can be realized, the problem of quite low accuracy of calculation results in offshore wind energy evaluation by use of a conventional uniform roughness method can also be solved to a certain degree, and the method has a crucial effect on reasonable determination of economic benefits of the whole wind power plant.

Description

technical field [0001] The invention relates to a wind energy evaluation method of an offshore wind farm based on sea surface roughness, and belongs to the field of wind energy evaluation of an offshore wind farm. Background technique [0002] In recent years, offshore wind farms have developed rapidly. Denmark, Germany, Spain, Sweden and other countries are building large-scale offshore wind farms, and many countries are formulating plans for offshore wind power development. my country has a long coastline and abundant offshore wind energy resources. Compared with land wind farms, offshore wind farms have the advantages of saving land resources, high and continuous wind speed, and no influence of complex terrain on airflow. As we all know, the wind energy resources of wind farms are an important factor affecting the economic benefits of wind farms. The measurement and evaluation of wind energy resources is the key to the success of building wind farms. Especially for offsh...

AI Technical Summary

Problems solved by technology

However, at present, these factors are not fully considered in the assessment of offshore wind energy resources, especially in practical engineering applications, most of them simply determine the sea surface roughness as zero or a mean value

Although it is very simple and convenient to apply the traditional zero roughness or average value calculation method to actual offshore wind power projects, this method usually has the defect of partial generalization, especially for local sea areas with special changes, and the wind energy evaluation results are often inaccurate It reflects the actual changes in the local area, so it has a great impact on the accuracy of the economic benefit assessment of the entire wind farm

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