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A regional layered reactive power control method for wind farms

A technology of area control and power control, applied in wind power generation, electrical components, circuit devices, etc., to achieve the effect of improving safety and stability and strengthening robustness

Active Publication Date: 2018-05-25
LEADZONE SMART GRID TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing control systems receive dispatch commands and directly control the power generation equipment in the electric field, meeting the new needs of regional regulation of multiple electric fields.

Method used

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  • A regional layered reactive power control method for wind farms
  • A regional layered reactive power control method for wind farms
  • A regional layered reactive power control method for wind farms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] refer to figure 1 , a kind of wind farm regional layered reactive power control method proposed by the present invention comprises the following steps:

[0025] S1. The reactive power control of the wind farm is divided into an area control system and a station control system. The area control system is used to control the low-voltage side busbar, and the station control system is used to control the power generation unit.

[0026] refer to image 3 In the shown embodiment, the busbars between the grid-connection points A1, A2, A3 and the power generation units are all low-voltage busbars, and the regional control system is actually for each grid-connection point A1, A2, A3, B1, B2, B3, B4, B5 Take control. combine figure 2 , the station control system includes one or more power generation units, and each power generation unit corresponds to a wind turbine monitoring system and a reactive power compensation device. The station control system controls the reactive po...

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Abstract

The invention discloses a wind farm regional hierarchical reactive power control method. Wind farm control is divided into regional control and station control according to the scene. Regional control refers to control of low-voltage side buses. Under the scene of regional control, each control unit of a system is a low-voltage bus for one region, and the system receives an AVC instruction sent by an upper control layer, decomposes the AVC instruction into instructions for lower control layers and sends the instructions to the lower control layers. Station control refers to control of power generation units. Under the scene of station control, each control unit of the system is a power generation unit in one station, and the system receives an AVC instruction sent by a regional control layer, decomposes the AVC instruction into instructions for the power generation units and sends the instructions to the power generation units. The wind farm regional hierarchical reactive power control method put forward by the invention meets the new demand for multi-electric field regional control, enhances the robustness of the system, and improves the security and stability of the station control system.

Description

technical field [0001] The present invention relates to the technical field of wind farms, in particular to a regional layered reactive power control method for wind farms. Background technique [0002] Due to the characteristics of randomness, intermittence and volatility of wind power output, large-scale wind power grid integration will have certain adverse effects on the safe and stable operation of the power grid. With the rapid growth of wind power installed capacity and the gradual increase in the proportion of wind power grid-connected, in order to ensure the acceptance of wind power by the grid and promote the coordinated development of wind power and the grid, it is necessary to automatically control the voltage and reactive power of the wind farm. Voltage qualification rate and reduce network loss, improve the safe operation level of the grid, and the grid's ability to accept wind power. However, the existing control systems all receive dispatch commands to direct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/50
CPCH02J3/386H02J3/50Y02E10/76
Inventor 柴东元殷骏程琦谢芝东王统义
Owner LEADZONE SMART GRID TECH