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Wind direction data interpolation method

A data interpolation and wind direction technology, applied in data processing applications, instruments, forecasting, etc., can solve the problems of low integrity of wind direction data and poor accuracy of wind direction data integrity, and achieve high integrity, good accuracy, and good data supported effect

Active Publication Date: 2017-10-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

For the missing wind direction data, there are usually two processing methods: (1) ignore these missing wind direction data, the accuracy of the wind direction data in this method is better, but the completeness is low; (2) directly use other data (at the same time or nearby time) directly copy to fill in the missing data, the completeness of the wind direction data in this method is higher, but the accuracy is lower
[0004] Aiming at the fact that the existing wind direction data interpolation method cannot guarantee high completeness and good accuracy at the same time, the present invention proposes a wind direction data interpolation method that can improve wind farm data more effectively

Method used

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Embodiment Construction

[0034] The direction interpolation method of the present invention will be described below in conjunction with specific examples.

[0035] The present invention relates to a kind of wind direction interpolation method, comprises steps:

[0036] Step 1: sort out the wind direction data to be interpolated and the auxiliary interpolated wind direction data (multiple sets may be available), and determine their completeness. When the reference data is also missing, this method can be used to interpolate the reference data first. details as follows:

[0037] Step 11: Organize the wind direction data to be interpolated {y i}, to align all data with their time labels;

[0038] Step 12: Treat the imputed wind direction data as time series {y i} Carry out missing calibration and establish the missing vector of wind direction data to be interpolated {p 1 ,p 2 ,...,p N}, if the i-th wind direction data y is to be interpolated i missing, then p i =0; otherwise, p i =1; N is the t...

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Abstract

The present invention relates to a wind direction data interpolation method. The method can automatically select a time window for interpolation according to the missing condition of to-be-interpolated wind direction data so as to ensure the relationship between auxiliary interpolation wind direction data and to-be-interpolated wind direction data. Meanwhile, through the transformation of a trigonometric function, the characteristics of wind direction data are better utilized, namely the annular effect of wind direction data. According to the technical scheme of the invention, wind direction data can be more effectively interpolated, so that obtained wind direction data are better in integrity and accuracy. Therefore, the method provides a better data support for the wind resource assessment.

Description

technical field [0001] The invention belongs to the technical field of wind farms, in particular to a wind direction data interpolation method. Background technique [0002] Wind energy is the fastest growing and most valuable clean energy among renewable energy sources, and wind power is the main form of wind energy development and utilization. In recent years, my country's wind power industry has developed rapidly. This situation undoubtedly brings great opportunities for wind power generation, but it also brings huge challenges. There are still many problems in the design and operation of wind power generation. Wind power is not as stable as thermal power or hydropower, mainly due to the uncertainty of wind energy resources. Wind energy resources are fluctuating and intermittent. Therefore, before building a wind farm, it is necessary to deeply analyze the local long-term wind resource data to fully understand the situation of wind energy resources, and then judge whethe...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 赵钰刘永前韩爽李莉阎洁乔延辉张路娜龙泉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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