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Wind power plant on-grid energy deviation computing method based on anemometer tower mutual verification

A technology of deviation calculation and wind measurement tower, which is applied in the direction of calculation, electrical digital data processing, special data processing application, etc., can solve the problem that the software analysis error of the comprehensive reduction coefficient of annual on-grid electricity cannot be reasonably determined.

Active Publication Date: 2015-07-22
CHANGJIANG SURVEY PLANNING DESIGN & RES
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Problems solved by technology

[0031] The purpose of the present invention is to provide a method for calculating the deviation of the wind farm's grid-connected power based on the mutual verification of wind-measuring towers, which overcomes the software analysis error in the comprehensive reduction coefficient of the annual grid-connected power of the existing wind farm and cannot be reasonably determined

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  • Wind power plant on-grid energy deviation computing method based on anemometer tower mutual verification
  • Wind power plant on-grid energy deviation computing method based on anemometer tower mutual verification
  • Wind power plant on-grid energy deviation computing method based on anemometer tower mutual verification

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[0063] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention, but only as examples, and the advantages of the present invention will become clearer and easier to understand.

[0064] Based on the calculation method of the wind farm's grid-connected power deviation based on the mutual verification of wind measuring towers, taking a wind farm as an example, the wind farm is designed to install 24 2.0MW wind turbines with a total installed capacity of 48MW and a hub height of 80m. The designed annual on-grid electricity of the wind farm is 88.91 million kWh, the annual equivalent load hours of the wind farm is 1852h, and the capacity factor is 0.211.

[0065] Step 1: Topographic data of the wind farm area (CON)

[0066] The 1:10000 topographic map of the wind farm site is used, and the 1:2000 topographic map is measured on site. D...

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Abstract

The invention discloses a wind power plant on-grid energy deviation computing method based on anemometer tower mutual verification. The wind power plant on-grid energy deviation computing method comprises the steps that step 1 area terrain material of a wind power plant is surveyed; step 2 area roughness of the wind power plant is surveyed; step 3 an integral efficiency analysis is carried out on an anemometer tower; step 4 measured data of all spots are obtained; step 5 by using the area terrain material CON of the wind power plant and the area roughness ROU of the wind power plant which are obtained in the step 1 and the step 2 and other auxiliary materials such as unit parameters, a wind resource simulation analysis is conducted by adopting Meteodyn WT, and wind speed of other anemometer towers is stimulated and calculated by adopting one anemometer tower respectively; step 6 a deviation value is computed by the measured data and speculated data; step 7 a mutual verification weighted average error value of the anemometer tower is computed, wherein a weight value is the effective intact rate of all towers, composition errors of all areas are obtained, and an on-grid energy error is computed through an overall error ER.

Description

technical field [0001] The invention relates to the reduction analysis of the grid-connected electricity of a wind farm, more specifically, it is a method for calculating the deviation of the grid-connected electricity of a wind farm based on the mutual verification of wind-measuring towers. Background technique [0002] The accurate estimation of the wind farm's annual on-grid electricity is directly related to the benefit level and risk level of the wind farm, and determines the investment direction and investment decision-making of enterprises. [0003] The annual on-grid electricity of wind farms is usually calculated and analyzed in accordance with the method of "Explanation of the National Development and Reform Commission on the Reduction of Wind Power Generation in China": the reduction of wind power generation refers to the analysis of the factors that affect the actual output of wind farms. The value of the reduction in power generation caused by each factor is obt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 曾杰杨家胜赵鑫刘凯李德胡超
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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