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Wind turbine generator rapid frequency response control method and 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, save operation and maintenance costs, and solve the problem of rapid response.

Active Publication Date: 2020-09-18
NORTHWEST BRANCH OF STATE GRID POWER GRID CO +1
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  • Application Information

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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 generator rapid frequency response control method and system for all working conditions
  • Wind turbine generator rapid frequency response control method and system for all working conditions
  • Wind turbine generator rapid frequency response control method and 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 wind turbine generator rapid frequency response control method and system for all working conditions. The method specifically comprises: collecting wind speed is collected, switching different frequency response control strategies and low wind speed frequency response control strategies according to different wind speed working conditions, collecting system frequency difference, conducting frequency response control on large-amplitude high-frequency difference through a frequency droop adjusting function, and obtaining a wind turbine generator rotating speed control instruction; a medium wind speed frequency responsing control strategy: collecting a system frequency difference, and performing frequency response control on the small frequency difference by using afrequency droop adjustment function to obtain a wind turbine generator rotating speed control instruction; performing frequency response control on the large high-frequency difference by using a filter and a fuzzy controller; and a high-wind-speed frequency response control strategy: carrying out frequency response control on the large-amplitude high-frequency difference by utilizing a filter anda fuzzy controller. A large amount of operation and maintenance cost is saved for power generation enterprises, and meanwhile assessment caused by insufficient primary frequency modulation amount is avoided.

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 (adjustingphase locked loop, APLL) control, etc., because the additional power control is simple and easy to implement, it is the most common. 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 pr...

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Application Information

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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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