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Wind power plant reactive power control method

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 off-grid, reactive power accumulation of wind turbines, etc., and achieve the effect of precise control and elimination of errors

Active Publication Date: 2021-02-05
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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  • Wind power plant reactive power control method
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  • Wind power plant reactive power control method

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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 implemented.

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Abstract

The invention provides a wind power plant reactive power control method. The method comprises the following steps of obtaining input parameters of a wind power plant reactive power control algorithm;calculating an energy management regulation and control period according to a power grid reactive power control assessment period; calculating the difference between the total reactive power of a windpower plant and a grid dispatching reactive power target value; when the difference exceeds a reactive power adjustment dead zone of the wind power plant, calculating a reactive power target value ofa single wind generating set, and determining the control reactive power slope of the single wind generating set according to the change of the power grid dispatching reactive power target value; andissuing the reactive power target value of the single wind generating set, controlling the reactive power slope to each wind generating set, and performing reactive power control according to the energy management regulation and control period. According to the method, the technical problem that reactive accumulation may be formed to cause off-grid of the wind generating sets when a power grid consumes the reactive power generation capacity difference of the wind generating sets, can be solved.

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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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