Method for realizing primary frequency modulation function of wind power generation based on wind farm power control

A technology of power control and realization method, applied in wind power generation, electrical components, circuit devices, etc., can solve the problems of high technical difficulty and required cost, and achieve the effect of reducing required cost

Active Publication Date: 2020-12-08
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both methods are technically difficult and expensive

Method used

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  • Method for realizing primary frequency modulation function of wind power generation based on wind farm power control
  • Method for realizing primary frequency modulation function of wind power generation based on wind farm power control
  • Method for realizing primary frequency modulation function of wind power generation based on wind farm power control

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Embodiment Construction

[0022] At present, the wind farms connected to the grid for centralized operation are basically equipped with AGC regulators or similar active power control devices, which have the ability to perform AGC regulation according to the dispatching active power command value.

[0023] In this type of active power control device, by increasing the droop frequency regulation control strategy of the wind farm power (the droop control frequency regulation effect is equivalent to the primary frequency regulation of a synchronous generator relying on the governor, that is, proportional differential regulation), to achieve The primary frequency modulation function of the wind farm.

[0024] A method for realizing the primary frequency modulation function of wind power generation based on wind farm power control in the present invention, comprising: adding a drooping frequency adjustment control strategy for wind farm power in the active power control device of the wind farm that is central...

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Abstract

The invention discloses a wind power generation primary frequency modulation function realization method based on wind farm power control. The method comprises the steps that in an active power control device of a wind farm of grid-connected operation concentrated access, the sag frequency adjustment control policy of the wind farm power is added; the frequency f of the wind farm of grid-connected operation concentrated access is monitored in real time; when the power grid frequency f exceeds a set primary frequency modulation dead zone, the power given target value P1 of the wind farm after primary frequency modulation is calculated according to the control policy; the active power control device reassigns the new power given target value P1 to each wind turbine; and each wind turbine adjusts the respective output according to an instruction to realize the primary frequency modulation function of the whole wind farm. According to the invention, a single wind turbine in the wind farm does not need to have the primary frequency modulation ability; and directly through the means of wind farm power control, the whole wind farm has the primary frequency modulation effect similar to the effect produced by a synchronous generator which relies on a governor.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a technical method for realizing the primary frequency regulation function of wind power generation. Background technique [0002] At present, domestic wind turbines basically do not have the primary frequency regulation function, and there is no primary frequency regulation capability for wind farms with centralized grid-connected power generation. Judging from the current domestic technical information, there are basically two ways to realize the primary frequency regulation function of wind power generation: one is to make the wind turbine have the primary frequency regulation function through the technical transformation of the wind turbine and its control system. The focus of the transformation is on the wind turbines, and the control amount to achieve primary frequency regulation is mainly the active power of each wind turbine in the wind farm. The control technology is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/48H02J3/38
CPCH02J3/386H02J3/48Y02E10/76
Inventor 孙骁强万天虎李华马晓伟褚云龙程松刘鑫李成家吴子豪王永庆迟方德郭晨王康唐浩李立王钊
Owner STATE GRID CORP OF CHINA
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