Offshore wind power plant equivalent method, system and device based on wake effect factors

A wake effect and equivalent method technology, applied in wind power generation, sustainable buildings, climate sustainability, etc., can solve the problems of long calculation time, large amount of calculation, low accuracy, etc. Occupy less memory space, the system is simple and easy to achieve the effect

Active Publication Date: 2019-05-24
GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there are often hundreds of wind turbines in the simulation of large offshore wind farms. If the model of each wind turbine is built in detail, the complexity of the simulation will be greatly increased, resulting in long calculation time, low resource utilization, and even leading to the "curse of dimensionality"
[0004] For this reason, equivalent modeling of wind farms is carried out in related technologies, and the wake effect is considered in the equivalent value of wind farms. Each wind turbine calculates the real-time wake effect, which requires a large amount of calculation and high complexity of the model, and does not consider the influence range of the wake effect
In addition, this technology adopts the k-means algorithm for grouping. Although the calculation is simple and easy, the accuracy is not high and it is easy to fall into local optimum

Method used

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  • Offshore wind power plant equivalent method, system and device based on wake effect factors
  • Offshore wind power plant equivalent method, system and device based on wake effect factors
  • Offshore wind power plant equivalent method, system and device based on wake effect factors

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Embodiment 1

[0039] figure 1 It is a flowchart of an equivalent method for offshore wind farms based on wake effect factors in an embodiment of the present invention.

[0040] Such as figure 1 As shown, the equivalent method of offshore wind farms based on wake effect factors includes the following steps:

[0041] S1, obtaining the parameters of the offshore wind farm.

[0042] Among them, the parameters of the offshore wind farm include the incoming wind speed of the offshore wind farm (including the magnitude and direction of the incoming wind speed), the position information of each wind turbine in the offshore wind farm, the radius of the rotor, the decay constant and the thrust coefficient.

[0043] In this embodiment, the wind turbines in the offshore wind farm are preferably double-fed wind turbines.

[0044] S2. Determine the wake effect factor of each wind turbine according to the parameters of the offshore wind farm.

[0045] Specifically, the influence degree of the wake eff...

Embodiment 2

[0076] Figure 5 It is a structural block diagram of an offshore wind farm equivalent system based on wake effect factors according to an embodiment of the present invention.

[0077] Such as Figure 5 As shown, the offshore wind farm equivalent system 10 based on wake effect factors includes: an acquisition module 11 , a determination module 12 , a grouping module 13 , a calculation module 14 and a modeling module 15 .

[0078]Wherein, the obtaining module 11 is used to obtain the parameters of the offshore wind farm, wherein the parameters of the offshore wind farm include the incoming wind speed of the offshore wind farm, the position information of each wind turbine in the offshore wind farm, the radius of the wind rotor, the decay constant and the thrust coefficient; The determination module 12 is used to determine the wake effect factor of each wind turbine according to the parameters of the offshore wind farm; the grouping module 13 is used to group the wind turbines i...

Embodiment 3

[0082] Image 6 It is a structural block diagram of an equivalent device of an offshore wind farm based on a wake effect factor according to an embodiment of the present invention.

[0083] Such as Image 6 As shown, the equivalent device 20 for offshore wind farms based on wake effect factors includes a memory 21 , a processor 22 and a computer program 23 stored in the memory 21 .

[0084] In this embodiment, when the computer program 23 is executed by the processor 22, the aforementioned method of equivalent value of an offshore wind farm based on the wake effect factor is realized.

[0085] In the wake effect factor-based offshore wind farm equivalent device of the embodiment of the present invention, when the computer program corresponding to the above-mentioned wake effect factor-based offshore wind farm equivalent method stored in its memory is executed by a processor, it can establish Equivalent model of offshore wind farm. This model has high precision, less memory u...

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Abstract

The invention discloses an offshore wind power plant equivalent method based on wake effect factors. The method comprises the following steps: obtaining parameters of an offshore wind power plant, wherein the parameters of the offshore wind power plant comprise the incoming flow wind speed of the offshore wind power plant, the position information of each wind turbine set in the offshore wind power plant, the radius of wind wheels, an attenuation constant and a thrust coefficient; determining a wake effect factor of each wind turbine set according to the parameters of the offshore wind power plant; grouping the wind turbine generators in the offshore wind power according to the wake effect factors; calculating equivalent parameters of each wind turbine generator group; and establishing anoffshore wind power plant equivalent model according to each wind turbine generator group and the equivalent parameters thereof. The method is simple, easy to implement, small in occupied memory space, high in accuracy and suitable for large-scale offshore wind power research.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an equivalent method, system and device for offshore wind farms based on wake effect factors. Background technique [0002] Compared with onshore wind power generation, offshore wind power generation has many obvious advantages, mainly in the following aspects: (1) Offshore wind turbines can reduce the occupation of land resources, and the sea has a large continuous space suitable for large-scale wind power projects, which is very suitable for large-scale wind power generation (2) Compared with onshore wind power, offshore wind power is closer to the traditional power load center, which is conducive to the consumption of the grid and reduces the investment cost and power loss caused by long-distance power transmission; (3) Offshore wind speed is faster than that on land. If the wind speed is 20% to 100% higher, the power generation efficiency will also increase acco...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCY02B10/30Y02E10/76
Inventor 余浩林勇张子杰宫大千黎灿兵左郑敏龚贤夫王晓辉刘正超刘新苗张辽
Owner GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD
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