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Offshore semi-direct-drive wind power plant equivalence method, system and device

A semi-direct drive, equivalent method technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as large equivalent errors, differences in the operating status of wind turbines, and unstable equivalent results. Achieve the effect of less memory occupation, high precision and low computational complexity

Inactive Publication Date: 2019-05-28
GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this technology does not require complex calculations and has good adaptability to wind speed data and fault point locations, the equivalent result obtained by it is unstable. Since the final equivalent is only one wind motor, the equivalent machine The power is the algebraic sum of the power of all units. For large-scale wind farms, the operating conditions of the wind turbines are different, and there must be a problem that it is difficult to take into account the differences in the operating states of the wind turbines, that is, a large equivalent error is generated.

Method used

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  • Offshore semi-direct-drive wind power plant equivalence method, system and device
  • Offshore semi-direct-drive wind power plant equivalence method, system and device
  • Offshore semi-direct-drive wind power plant equivalence method, system and device

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Embodiment 1

[0045] figure 1 It is a flowchart of an equivalent method for an offshore semi-direct drive wind farm according to an embodiment of the present invention.

[0046] Such as figure 1 As shown, the offshore semi-direct drive wind farm equivalent method includes the following steps:

[0047] S1, obtaining wind resource data of the offshore wind farm.

[0048] Wherein, the wind resource database includes the wind speed detected by the offshore wind farm within a preset time (for example, 1 year).

[0049] S2. Divide the wind speed in the wind resource data into a plurality of wind speed segments according to a preset step size, so as to establish a wind speed database.

[0050] Wherein, the preset step length may be 1m / s, and the number of wind speed segments may be 15.

[0051] S3, performing the first grouping of the wind turbines according to the pitch angle control action of the semi-direct drive wind turbines to obtain a first group and a second group.

[0052] Among them...

Embodiment 2

[0083] figure 2 It is a structural block diagram of an equivalent system of an offshore semi-direct drive wind farm according to an embodiment of the present invention.

[0084] Such as figure 2 As shown, the offshore semi-direct drive wind farm equivalent system 10 includes: an acquisition module 11, a division module 12, a first grouping module 13, and a second grouping module 14

[0085] Wherein, the obtaining module 11 is used to obtain the wind resource data of the offshore wind farm; the dividing module 12 is used to divide the wind speed in the wind resource data into a plurality of wind speed segments according to the preset step size, so as to establish a wind speed database; the first grouping module 13 It is used to group the wind turbines according to the pitch angle control action of the semi-direct drive wind turbines for the first time to obtain the first group and the second group; the second grouping module 14 is used to group the first The wind turbines i...

Embodiment 3

[0089] image 3 It is a structural block diagram of an equivalent device of an offshore semi-direct drive wind farm according to an embodiment of the present invention.

[0090] Such as image 3 As shown, the offshore semi-direct drive wind farm equivalent device 20 includes a memory 21 , a processor 22 and a computer program 23 stored on the memory 21 .

[0091] In this embodiment, when the computer program 23 is executed by the processor 22, the above-mentioned offshore semi-direct drive wind farm equivalent method is realized.

[0092] In the offshore semi-direct-drive wind farm equivalent device of the embodiment of the present invention, when the computer program corresponding to the above-mentioned offshore semi-direct-drive wind farm equivalent method stored in its memory is executed by the processor, the equivalent model accuracy obtained is It is high, occupies less memory, and has low computational complexity, and is suitable for dynamic equivalent modeling of larg...

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Abstract

The invention discloses an offshore semi-direct-drive wind power plant equivalence method, system and device, and the method comprises the following steps of obtaining the wind resource data of an offshore wind power plant; dividing the wind speed in the wind resource data into a plurality of wind speed segments according to a preset step length so as to establish a wind speed database; performingfirst grouping on the wind turbine generators according to the pitch angle control action of the semi-direct-drive wind turbine generators to obtain a first group and a second group; according to thewind speed database, grouping the wind turbine generators in the first group and the second group for the second time; respectively calculating the equivalent parameters of each wind turbine generator group obtained by the second time of grouping; and establishing an offshore semi-direct-drive wind power plant equivalent model according to each wind turbine generator group and the equivalent parameters thereof. The model is high in accuracy and fast in response speed, is suitable for dynamic equivalent modeling of a high-capacity offshore semi-direct-drive wind power plant and influence analysis on a power system, and has important application value in the field of engineering.

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 an offshore semi-direct drive wind farm. Background technique [0002] In 2017, the National Energy Administration issued the "Notice on Relevant Requirements for Accelerating the Construction of Distributed Access Wind Power Projects", which clearly pointed out that the development and construction of decentralized wind power projects should follow the principles of "coordinated efficiency, step-by-step implementation, local balance, and nearby consumption. "The overall principle of advancing, and pay attention to adapt measures to local conditions. In 2018, my country successively issued the "Notice on the Results of Wind Power Investment Monitoring and Early Warning in 2018", "Notice on Printing and Distributing Guiding Opinions on Energy Work in 2018", "Interim Measures for the Development and Construction of Distribut...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06F17/50
Inventor 余浩龚贤夫林勇许亮魏娟黄欣张哲萌左郑敏宫大千段瑶覃芸李峰黎灿兵
Owner GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD