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Framework with wind electricity participating in system frequency modulation control

A technology for wind power and wind farms, which is applied to the architecture field of wind power participating in system frequency regulation control, can solve problems such as the support of unfavorable system frequencies, the inability of units to complete adjustment tasks, and the inability of wind farms to strictly complete frequency regulation tasks, to achieve the effect of ensuring rotational speed.

Inactive Publication Date: 2014-01-29
STATE GRID CORP OF CHINA +2
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  • Abstract
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AI Technical Summary

Problems solved by technology

If the frequency regulation task is evenly distributed to each unit, it may cause some units to fail to complete the regulation task, and eventually the wind farm cannot strictly complete the frequency regulation task
And the natural recovery of the rotor requires a long process, which is not conducive to the support of the system frequency in the next stage

Method used

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  • Framework with wind electricity participating in system frequency modulation control
  • Framework with wind electricity participating in system frequency modulation control
  • Framework with wind electricity participating in system frequency modulation control

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0033] like figure 2 Shown is a wind power participation frequency modulation control architecture based on a layered structure, which is divided into an operation management layer, a wind farm control layer, and a wind turbine control layer;

[0034] 1. Operation Management

[0035] The operation management layer supervises the behavior of the entire wind farm. It determines the control layer mode status, power and frequency parameters of the wind farm, sets the droop characteristic curve parameters of the wind farm, and coordinates the frequency control of the wind farm and the conventional power plant.

[0036]Coordinated control between wind farms and conventional power plants is carried out according to the d...

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Abstract

The invention discloses a framework with wind electricity participating in system frequency modulation control. The framework comprises an operation managing layer, a wind electricity field control layer and a wind electricity unit control layer. The fact that the practical working conditions of units participating in frequency modulation in a wind electricity field are different is considered, wind electricity field frequency modulation economy is combined, the frequency modulation amplitude of the units is determined; meanwhile, a rotating speed recovery module is added, quick recovery of the rotating speed of a rotor is guaranteed, preparation is provided for next-stage system frequency modulation, and accordingly the wind electricity field can participate in frequency modulation like a conventional electricity field.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a framework for wind power participating in system frequency modulation control. Background technique [0002] During the operation of the power system, it is subjected to the disturbance of the active load change at any time. When the load of the unit increases or decreases, the speed will drop or rise, causing the AC frequency to deviate from the normal value. If the frequency deviation is too large, it will affect the quality and output of industrial and agricultural products, and even cause equipment damage. In severe cases, the system frequency will collapse, the power plant will be disconnected, and a large area will be blacked out. Therefore, the power system needs to adjust the frequency. The frequency adjustment of the power system is divided into primary frequency adjustment and secondary frequency adjustment. [0003] Primary frequency regulation refers to the c...

Claims

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Application Information

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IPC IPC(8): H02J3/48
CPCY02E10/763Y02E10/76
Inventor 汪宁渤张金平丁坤马彦宏周识远李津赵龙刘光途黄蓉王定美周强路亮马明张健美吕清泉
Owner STATE GRID CORP OF CHINA
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