Dynamic response modeling method for primary frequency modulation system of wind turbine generator based on propeller pitch control

A wind turbine and pitch control technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of lack of dynamic response speed and steady-state response, no wind power primary frequency modulation dynamic response modeling work, etc.

Active Publication Date: 2016-12-14
CHINA THREE GORGES UNIV
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Problems solved by technology

For primary frequency regulation of wind turbines, although a lot of work has been carried out on control strategies and regulation performance improvement, so far no modeling work has been done on the dynamic response of primary frequency regulation of wind power, so there is a lack of wind power mechanical power under system frequency disturbance. Mathematical Description Method of Adjusted Dynamic Response Speed ​​and Steady-state Response

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  • Dynamic response modeling method for primary frequency modulation system of wind turbine generator based on propeller pitch control
  • Dynamic response modeling method for primary frequency modulation system of wind turbine generator based on propeller pitch control
  • Dynamic response modeling method for primary frequency modulation system of wind turbine generator based on propeller pitch control

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Embodiment Construction

[0052] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention. The block diagram of the primary frequency modulation input and output system based on pitch control in the present invention is as follows: figure 1 As shown, each part of the control model is given by the figure.

[0053] A method for modeling the dynamic response of a wind turbine primary frequency modulation system based on pitch control, comprising the following steps:

[0054] Step 1: Calculate P according to the aerodynamic model m per unit value P m-pu :

[0055] P m - p ...

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Abstract

The invention relates to a dynamic response modeling method for a primary frequency modulation system of a wind turbine generator based on propeller pitch control. The method comprises the following steps: solving a small signal increment Delta Pm of mechanical power Pm; establishing a state variable for describing a power control ring; establishing a reference pitch angle beta ref and a mathematic model of a propeller pitch servo actuator; establishing a small signal increment state equation set of a propeller pitch primary frequency modulation input and output control system related to the variable according to the above-mentioned steps; constructing a system state space model and solving a system input and output transfer function. The invention aims to provide a dynamic modeling method for the primary frequency modulation system of a double-fed wind turbine generator for describing the dynamic response of the primary frequency modulation system of similar synchronous generator prime motor-governor, so as to grasp a mathematic description method for the primary frequency modulation response of the wind turbine generator under the disturbance of power system frequency.

Description

technical field [0001] The invention relates to the technical field of wind power generation system control and modeling, in particular to a dynamic response modeling method for a primary frequency modulation system of a wind turbine based on pitch control. Background technique [0002] The primary frequency regulation of a synchronous generator includes a dynamic response process and a steady-state response process. The dynamic response process is described by the dynamic model of the prime mover and the governor, which can reflect its mechanical power adjustment speed, and the mechanical power can be reflected by the static differential rate Adjust the steady-state amplitude and the effect on the system frequency steady-state response. For primary frequency regulation of wind turbines, although a lot of work has been carried out on control strategies and regulation performance improvement, so far no modeling work has been done on the dynamic response of primary frequency r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李世春
Owner CHINA THREE GORGES UNIV
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