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Wind turbine fast frequency response control method and control system for all working conditions

A frequency response, wind turbine technology, used in control systems, wind power generation, control generators, etc., can solve the problems of waste of wind resources and high maintenance costs, achieve the effect of saving operation and maintenance costs and solving rapid response problems

Active Publication Date: 2022-02-18
NORTHWEST BRANCH OF STATE GRID POWER GRID CO +1
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Problems solved by technology

[0003] Purpose of the invention: In order to solve the problems of waste of wind resources and high maintenance cost in the prior art, the present invention provides a fast frequency response control method and control system for wind turbines under all working conditions

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  • Wind turbine fast frequency response control method and control system for all working conditions
  • Wind turbine fast frequency response control method and control system for all working conditions
  • Wind turbine fast frequency response control method and control system for all working conditions

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Embodiment Construction

[0033] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0034]In current research schemes, the participation frequency control strategies of wind turbines are generally based on constant wind speed conditions or a given ideal wind speed model, with little consideration given to the actual operating conditions of wind turbines. Under the actual operating conditions of the fan, the power control characteristics of the fan are different under different wind speeds, which will affect the design of the fan's own power controller and the change of the frequency response control parameters to varying degrees, and there are certain defects. First, it is difficult to adapt to the wind speed. Different fan operating condition...

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Abstract

The invention discloses a fast frequency response control method and system for wind turbines under all working conditions, specifically: collecting wind speed, switching to different frequency response control strategies according to different wind speed working conditions, low wind speed frequency response control strategy: Collect the frequency difference of the system, use the frequency droop adjustment function to control the frequency response of the large high frequency difference, and obtain the wind turbine speed control command; the frequency response control strategy of the medium wind speed: collect the system frequency difference, use the frequency droop adjustment function to control the frequency of the small frequency difference Response control to get wind turbine speed control command; use filter and fuzzy controller to control the frequency response of large high-frequency difference; high wind speed frequency response control strategy: use filter and fuzzy controller to control the frequency response of large high-frequency difference . The present invention saves a large amount of operation and maintenance costs for power generation enterprises and at the same time does not cause assessment due to insufficient primary frequency regulation.

Description

technical field [0001] The invention belongs to the technical field of power systems, in particular to the technical field of fast frequency response control of wind turbines. Background technique [0002] Disturbance faults in the large power grid will cause large fluctuations in the system frequency and small disturbances in the system frequency at all times. The existing wind turbine frequency response methods include auxiliary power (auxiliary power, AP) control, virtual synchronous generator (virtual synchronous generator, VSG) Control and variable phase locked loop (adjusting phase locked loop, APLL) control, etc., are the most common due to the simplicity and ease of additional power control. On the basis of the original power control loop, it introduces the frequency deviation and its differential as the feedback signal to simulate the inertial response and primary frequency modulation response of the synchronous machine respectively. It is also called proportional-d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24H02J3/38H02P9/10H02P9/04H02P101/15
CPCH02J3/241H02J3/381H02P9/105H02P9/04H02J2203/20H02J2300/28H02P2101/15Y02E10/76Y02P80/20
Inventor 任冲柯贤波牛拴保王智伟霍超张振宇王吉利程林魏平卫琳高玉喜
Owner NORTHWEST BRANCH OF STATE GRID POWER GRID CO
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