Control method, device and system for wind power plant to participate in rapid frequency modulation and voltage regulation of power grid

A technology of frequency regulation, voltage regulation and control device, which is applied in wind power generation, parallel feeding arrangement of a single network, etc. It can solve the problems of long cycle and inability to adjust quickly, and achieve the effect of simple implementation and improved regulation efficiency.

Inactive Publication Date: 2020-04-17
STATE GRID ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The AGC / AVC system adopted by the wind farm is to control the active and reactive power of the whole field according to the dispatching instructions of the power grid. FM and slow voltage regulation

Method used

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  • Control method, device and system for wind power plant to participate in rapid frequency modulation and voltage regulation of power grid
  • Control method, device and system for wind power plant to participate in rapid frequency modulation and voltage regulation of power grid
  • Control method, device and system for wind power plant to participate in rapid frequency modulation and voltage regulation of power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment is a control method for wind farms to participate in fast frequency and voltage regulation of the power grid, including:

[0055] Obtain real-time voltage and current data of the grid-connected point of the wind farm;

[0056] Calculating the running state of the grid-connected point based on the acquired data, the running state includes frequency, active power, reactive power and power factor;

[0057] Judging whether the voltage and frequency of the current grid-connected point exceed the regulation dead zone according to the operating status of the grid-connected point;

[0058] In response to the voltage and frequency of the current grid-connected point exceeding the regulation dead zone, perform the following operations:

[0059] Calculate the active and reactive power regulation data of the wind farm according to the preset active power regulation rules and reactive power regulation rules, and according to the real-time voltage and current data an...

Embodiment 2

[0083] refer to image 3 As shown, this embodiment is a control device for wind farms to participate in fast frequency and voltage regulation of the power grid, including:

[0084] The real-time electrical quantity acquisition module is configured to acquire real-time voltage and current data of the grid-connected point of the wind farm;

[0085] The running state calculation module is configured to calculate the grid running state of the grid-connected point based on the acquired data, and then judge whether the frequency and voltage of the current grid-connected point exceed the regulation dead zone;

[0086] The power regulation calculation module is configured to perform the following operations in response to the voltage and frequency of the current grid-connected point exceeding the regulation dead zone:

[0087] Calculate the active and reactive power regulation data of the wind farm according to the preset active power regulation rules and reactive power regulation ru...

Embodiment 3

[0095] refer to image 3 , the wind farm in this embodiment participates in the control system of fast frequency and voltage regulation of the power grid, including the wind farm AGC / AVC system and the fast frequency and voltage regulation control device;

[0096] The fast frequency and voltage regulation control device executes the method of Embodiment 1, and when the voltage and frequency of the grid-connected point exceed the regulation dead zone, the active and reactive power adjustment data of the wind farm are calculated; and then sent to the AGC / AVC system of the wind farm A power adjustment control command for the power adjustment data;

[0097] The AGC / AVC system of the wind farm performs power regulation according to the received power regulation control command.

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PUM

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Abstract

The invention discloses a control method, device and system for a wind power plant to participate in rapid frequency modulation and voltage regulation of a power grid. The method comprises the steps:obtaining the real-time voltage and current data of a grid-connected point of the wind power plant, and calculating the operation states of the grid-connected point, including frequency, active power,reactive power and power factors; judging whether the voltage and the frequency of the current grid-connected point exceed an regulation dead zone or not according to the grid-connected point operation state; in response to the fact that the voltage and the frequency of the current grid-connected point exceed the regulation dead zone, executing operation: calculating active and reactive regulation data of the wind power plant according to the real-time voltage and current data and the operation state of the wind power plant grid-connected point based on a preset active regulation rule and a reactive regulation rule; and controlling the wind power plant to perform power regulation according to the calculated active and reactive regulation data of the wind power plant. Active and reactive output can be rapidly regulated according to frequency and voltage changes of the grid-connected points of the wind power plant, and frequency and voltage support is carried out on the power grid.

Description

technical field [0001] The invention relates to the technical field of power grid dispatching control, in particular to a control method, device and system for wind farms participating in fast frequency and voltage regulation of power grids. Background technique [0002] As the proportion of wind power generation capacity in the total power generation capacity continues to increase, the frequency fluctuation caused by wind power generation to the active power disturbance of the power grid is also increasing, and the plight of wind farms without primary frequency regulation and rapid voltage regulation is becoming increasingly prominent. The AGC / AVC system adopted by the wind farm is to control the active and reactive power of the whole field according to the dispatching instructions of the power grid. FM and slow voltage regulation. Contents of the invention [0003] The purpose of the present invention is to provide a control method, device and system for the wind farm t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/48H02J3/50H02J3/38
CPCH02J3/48H02J3/50Y02E10/76
Inventor 刘剑霍乾涛过亮蔡国洋胡丽萍朱倩婧
Owner STATE GRID ELECTRIC POWER RES INST
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