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Multi-time-space layering comprehensive frequency modulation control system based on fan cluster

A control system and cluster control technology, applied in wind power generation, AC network circuits, electrical components, etc., can solve problems such as few, imperfect layered control ideas, etc., to avoid secondary frequency fluctuations and ensure optimal frequency modulation capabilities and frequency modulation accuracy, and improve the effect of frequency modulation effect

Inactive Publication Date: 2021-10-08
HUNAN CITY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this stage, the research combines the wake effect of wind farms with wind speed prediction information, and there are not many studies on rolling clusters of wind farms.
At the same time, the research on the combination of layered control ideas and sequential control ideas using multiple control methods for wind farms is still incomplete.

Method used

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  • Multi-time-space layering comprehensive frequency modulation control system based on fan cluster
  • Multi-time-space layering comprehensive frequency modulation control system based on fan cluster
  • Multi-time-space layering comprehensive frequency modulation control system based on fan cluster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0103] This application adopts a 5×5 matrix distribution, and a wind farm composed of 25 1.5MW wind turbines is used to verify the effectiveness of the proposed method, as shown in Figure 10 The wind farm parameters are shown in Table 1.

[0104] Table 1 Wind farm parameters

[0105]

[0106] 1. Wind turbine clustering results

[0107] In this embodiment, four different scenarios with wind direction angle θ of 0°, 15°, 30° and 45° are given, and the traditional clustering (only considering the wind speed, hereinafter referred to as cluster 1) and the optimization of this application are compared Clustering (considering the wake effect, hereinafter referred to as clustering 2) two clustering results are shown in Table 2.

[0108] Table 2 Clustering and grouping results under different θ

[0109]

[0110]

[0111] Note: Negative sign indicates decrease.

[0112] Figure 11 is a schematic diagram of fan cluster distribution under the condition of 15° and wind speed...

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Abstract

The invention provides a multi-time-space layering comprehensive frequency modulation control system based on a fan cluster. According to the multi-time-space layering comprehensive frequency modulation control system, firstly, different frequency modulation modes and participation time sequences can be adopted for draught fans at different wind speeds according to different running states of the draught fans at different wind speeds; secondly, aiming at the influence of wind speed on fan frequency modulation control, a clustering method considering the wake flow effect of the wind power plant is established, so that the number of units in each cluster can be distributed in a balanced manner, the overall frequency modulation effect of the wind power plant is improved, and the problem of secondary frequency fluctuation is avoided; and finally, considering the randomness of the wind speed, the wind power plant cluster is optimized in a rolling manner per minute by adopting MPC, thereby ensuring the optimal frequency modulation capability and frequency modulation accuracy of the wind power plant.

Description

technical field [0001] The invention relates to the technical field of power grid frequency regulation, in particular to a multi-time-space layered comprehensive frequency regulation control system based on fan clusters. Background technique [0002] With the grid connection of large-scale wind farms, the system side has put forward clear requirements for the frequency regulation of wind farms. For example, some countries with high penetration of wind power in the West have clearly pointed out that grid-connected wind farms should have the same frequency modulation capability as conventional generator sets. According to my country's national standard GB / T19963-2011 "Technical Regulations for Connecting Wind Farms to Power Systems", it is pointed out that wind farms should meet the DL / T1040 standard and have the ability to participate in power system frequency regulation. [0003] With the in-depth research on the frequency modulation control strategy of grid-connected wind ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/48H02J3/24
CPCH02J3/48H02J3/241H02J2300/28Y02E10/76
Inventor 阳同光陈长青黎灿兵李文芳蔡振华黄志亮
Owner HUNAN CITY UNIV
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