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Method and device for regulating and controlling converters of wind turbines in wind farms

A technology for wind turbines and converters, which is applied in wind power generation, conversion of AC power input to DC power output, electrical components, etc. efficiency, reducing switching frequency, reducing the effect of harmonic content

Active Publication Date: 2022-07-26
XINJIANG GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Exemplary embodiments of the present invention aim to overcome the above disadvantages of large converter losses and high overall cost of wind farms

Method used

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  • Method and device for regulating and controlling converters of wind turbines in wind farms
  • Method and device for regulating and controlling converters of wind turbines in wind farms
  • Method and device for regulating and controlling converters of wind turbines in wind farms

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Embodiment Construction

[0045] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of the embodiments of the invention as defined by the claims and their equivalents. Various specific details are included to aid in that understanding, but are to be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0046] figure 2 A schematic structural diagram of a wind turbine in an existing typical design scheme of a wind farm is shown.

[0047] like figure 2 As shown, the wind turbine may include blades 210 , a permanent magnet synchronous generator 220 , a full power converter 230 , a grid side power cable 240 of the full power converter, and a ste...

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Abstract

A method and device for regulating the converter of a wind turbine in a wind farm are proposed. The method includes acquiring real-time voltage and current signals of a grid-connected point; acquiring real-time status information of each wind turbine on the same collector line of a wind farm; and generating unified control instructions based on the acquired real-time voltage and current signals and real-time status information. Wherein, the real-time status information includes the total number of three-phase bridge arms of the wind turbine converters running on the same collector line of the wind farm, and the dynamically allocated information for the running wind turbine converters and their three-phase bridge arms. number and the real-time power of each running wind turbine. Wherein, the unified control instruction includes a control instruction for each running wind turbine converter, wherein the control instruction includes a phase shift angle of the carrier wave required for control of each three-phase bridge arm in the converter Reference value, carrier ratio reference value, and modulated wave characteristic quantity reference value.

Description

technical field [0001] The present invention generally relates to the field of regulation and control of wind turbines, and more particularly, to a method and equipment for uniform regulation of converters of wind turbines on the same collector line in a wind farm. Background technique [0002] At present, the existing typical design schemes of wind farms such as figure 1 As shown, there are the following basic features: (1) for the entire wind farm, all wind turbines in the farm are identical in their internal topological structures (subsystems in the solid line frame); (2) for the entire wind farm As far as the whole wind turbine is concerned, the internal topology of the full-power converter (subsystem in the dashed box) is exactly the same, and the control strategy of the full-power converter is exactly the same; (3) According to the technical requirements of relevant technical standards and According to the design practice of existing projects, the rated capacity of ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02M7/5387H02J3/01
CPCH02M7/53871H02J3/01Y02E10/76Y02E40/40H02M7/493H02M1/0043H02M1/12H02J3/46H02J2300/28H02J3/44H02J3/381
Inventor 蒋中川艾斯卡尔
Owner XINJIANG GOLDWIND SCI & TECH CO LTD
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