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A method for controlling reactive power of a wind farm

A control method and power control technology, applied in wind power generation, electrical components, single-grid parallel feeding arrangement, etc., can solve the problems of reactive power accumulation of wind turbines, off-grid and other problems

Active Publication Date: 2022-05-10
CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, the present invention proposes a control method for reactive power of wind farms, in order to solve the problem that the power grid existing in the prior art may cause The technical problem of wind turbine off-grid due to the formation of reactive power accumulation

Method used

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  • A method for controlling reactive power of a wind farm
  • A method for controlling reactive power of a wind farm
  • A method for controlling reactive power of a wind farm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a method for controlling reactive power of a wind farm, including the following steps:

[0044] Obtain the input parameters of the reactive power control algorithm of the wind farm. The input parameters include the grid dispatching reactive power target value, the grid reactive power control assessment cycle, the wind farm reactive power adjustment dead zone, the wind farm total reactive power, and the wind power generation The reactive power of the unit;

[0045] Calculate the energy management regulation cycle according to the grid reactive power control assessment cycle;

[0046] Calculate the difference between the total reactive power of the wind farm and the target value of the grid dispatching reactive power;

[0047] When the difference exceeds the reactive power adjustment dead zone of the wind farm, calculate the reactive power target value of the single wind turbine, and determine the control reactive power slope of the single wind t...

Embodiment 2

[0085] An electronic device is provided, comprising:

[0086] one or more processors;

[0087] storage means for storing one or more programs;

[0088] When one or more programs are executed by one or more processors, the one or more processors implement the method for controlling reactive power of a wind farm provided in Embodiment 1.

Embodiment 3

[0090] A computer-readable storage medium storing a computer program is provided, and when the computer program is executed by a processor, the method for controlling reactive power of a wind farm provided by Embodiment 1 is realized.

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Abstract

The invention provides a wind farm reactive power control method, comprising the following steps: obtaining the input parameters of the wind farm reactive power control algorithm; calculating the energy management control cycle according to the grid reactive power control assessment cycle; calculating the total reactive power of the wind farm The difference between the power and the grid dispatching reactive power target value; when the difference exceeds the wind farm reactive power regulation dead zone, calculate the reactive power target value of a single wind turbine and determine it according to the change of the grid dispatching reactive power target value Control the reactive power slope of a single wind turbine; issue the reactive power target value of a single wind turbine, control the reactive power slope to each wind turbine, and perform reactive power control according to the energy management regulation cycle. The invention can solve the technical problem that the power grid may form reactive power accumulation and cause the wind power generators to go off-grid when the power grid accommodates the difference in reactive power generation capabilities of each wind power generator set.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method for controlling reactive power of a wind farm. Background technique [0002] In recent years, wind power has developed rapidly, and wind power-based new energy power generation is growing day by day. Wind power has become one of the main new energy power generation. With the gradual increase in the scale of wind power generation, the randomness and instability of its power generation The influence of the nature on the safe operation of the power grid cannot be ignored. In some wind farms with relatively poor grid environment, the grid absorbs reactive power slowly, which will bring uncertainties to the grid stability. Therefore, in the case of meeting the reactive power requirements of the AVC substation, it is necessary to control and optimize the reactive power generation process as much as possible to reduce the impact on the power grid and maintain the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/50
CPCH02J3/50H02J2300/28Y02E10/76
Inventor 张志远饶进刘瑾罗元宏唐娟朱朋刘杰孙宝会
Owner CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP