Wind power plant control method and device and wind power generation system

A control device and control method technology, applied to the control method of wind farms, wind power generation systems, and device fields, can solve problems such as increased equipment costs, energy consumption, and violation of power generation functions of power plants

Inactive Publication Date: 2018-10-02
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large number of reactive power compensation devices not only increase the cost of equipment,

Method used

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  • Wind power plant control method and device and wind power generation system
  • Wind power plant control method and device and wind power generation system
  • Wind power plant control method and device and wind power generation system

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0036] figure 1 It is a structural schematic diagram o...

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Abstract

The invention discloses a wind power plant control method and device and a wind power generation system. The wind power plant control method comprises the steps of detecting voltage and current of a grid-connected point of a wind power plant, and calculating reactive power of the grid-connected point; receiving a grid dispatching signal, and calculating ideal reactive power of the wind power plantbased on the grid dispatching signal; calculating the reactive power difference between the ideal reactive power and the reactive power; monitoring current wind speed information of a wind turbine generator system and operation information of the wind turbine generator system, and obtaining the output margin of the wind turbine generator system; and allocating reactive power required to be provided or absorbed to the wind turbine generator system according to the reactive power difference and the output margin, and sending an instruction used for indicating the wind turbine generator system to generate the allocated reactive power to the wind turbine generator system. The wind power plant control method can significantly improve voltage fluctuations and frequency changes of the grid-connected point, and can meet stability requirements of grid connection. The wind power plant control method greatly reduces the compensation work of reactive compensation equipment and the like, reduces the energy loss and reduces the equipment cost.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a control method, device and wind power generation system for a wind farm. Background technique [0002] With the development of social economy, power resources have become a necessity of people's life. Because wind power has the advantages of being clean, renewable, and not damaging the geographical environment, it has received widespread attention. In the process of wind power generation, due to the fluctuation of wind speed and wind direction, the voltage fluctuation of the wind farm or the grid-connected point of the wind power generator is caused. In the absence of effective control, the voltage fluctuation and frequency change generated when wind power is connected to the grid will have a great negative impact on the stable operation of the system. [0003] Existing control methods usually seek to maximize the use of wind power generation without considering changes or...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/18
CPCH02J3/18H02J3/386H02J3/38Y02E10/76Y02E40/30
Inventor 乔元张毅
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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