Automatic control method of wind electric active power for wind farm monitoring system

A technology of active power and monitoring system, applied in the direction of reactive power adjustment/elimination/compensation, wind power generation, system integration technology, etc., can solve problems such as the inability to realize online automatic power adjustment of wind farms, and achieve a powerful automatic control function of wind power power , Realize automation, improve the effect of operation and management level

Inactive Publication Date: 2010-12-15
STATE GRID ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that the existing wind farm monitoring system cannot realize the

Method used

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  • Automatic control method of wind electric active power for wind farm monitoring system
  • Automatic control method of wind electric active power for wind farm monitoring system
  • Automatic control method of wind electric active power for wind farm monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example one:

[0022] Such as figure 2 As shown, the present invention adopts the automatic control program of the maximum output mode in the wind power automatic control method for the wind farm monitoring system.

[0023] The grid-connected wind farm has a total active capacity of 100MW and a reactive power capacity of ±33.5MVar. It is composed of 67 single-unit double-fed asynchronous wind turbines with an active capacity of 1.5MW and a reactive capacity of ±0.5MVar. The initial active output of the wind farm is 60MW, the initial active output of each wind turbine is 0.89MW, and the maximum active power change rate per minute is 2% of the rated active capacity. As the wind speed changes, the maximum active power output of the wind farm increases to 70MW. Due to the limitation of the maximum active power change rate, the wind farm will gradually adjust its active power output. The active power output of the wind farm is adjusted by 2MW per minute, that is, the active pow...

Example Embodiment

[0024] Embodiment two:

[0025] Such as figure 2 As shown, the present invention uses an automatic control program in the plan tracking mode in a wind power active power control method used in a wind farm monitoring system.

[0026] The grid-connected wind farm has a total active capacity of 100MW and a reactive power capacity of ±33.5MVar. It is composed of 67 single-unit double-fed asynchronous wind turbines with an active capacity of 1.5MW and a reactive capacity of ±0.5MVar. The initial active output of the wind farm is 60MW, the initial active output of each wind turbine is 0.89MW, and the maximum active power change rate per minute is 2% of the rated active capacity. As the wind speed changes, the maximum active output of the wind farm increases to 80MW. At this time, the dispatch center issues a plan of 70MW. Due to the limitation of the maximum active power change rate, the wind farm will gradually adjust its active output, and the active output of the wind farm will be a...

Example Embodiment

[0027] Embodiment three:

[0028] Such as figure 2 As shown, the present invention adopts an automatic control program in an adaptive adjustment mode in a wind power active power control method used in a wind farm monitoring system.

[0029] The grid-connected wind farm has a total active capacity of 100MW and a reactive power capacity of ±33.5MVar. It is composed of 67 single-unit double-fed asynchronous wind turbines with an active capacity of 1.5MW and a reactive capacity of ±0.5MVar. The initial active output of the wind farm is 80MW, each wind turbine has an active output of 1.19MW. In addition, since the frequency is a global quantity of the system, that is, the frequency is the same everywhere in the system, the frequency measured by the substation at the outlet of the wind farm can be used as the system frequency quantity, and the active power reduction factor of the wind farm is set to 0.72. First, the measured system frequency is 50.9 Hz. Between 50.2Hz and 51Hz, the f...

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Abstract

The invention discloses an automatic control method of wind electric active power for a wind farm monitoring system. The method is characterized by comprising the following steps of: (1) maximum output mode control; (2) plan and track mode control; and (3) adaptive adjustment mode control. The method has the advantages of ensuring good connection with a dispinterface of the power grid in China, contributing to coordinating and cooperating the wind farm connected with the power grid with the connected regional power grid to run and improving the automatic control and the management and operation level of the wind farm, along with powerful real-time power output function and operating control function of the wind farm accessed power grid.

Description

technical field [0001] The invention relates to an automatic control method of wind power active power used in a wind farm monitoring system, and belongs to the technical field of wind farm control in new energy power generation technology. Background technique [0002] In the past 10 years, wind power has become the fastest growing clean energy in the world with an annual growth rate of more than 30%. At present, the core control technology of wind power generation has been in the hands of foreign companies. The core control technology such as wind farm monitoring system has not yet been localized, and related control products such as unit control system and wind farm monitoring system are completely dependent on imports. With the increase in the number and scale of wind farms, the disadvantages of the wind farm monitoring system being controlled by others to the operation and management of wind farms are becoming more and more obvious. [0003] The wind farm central monit...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/18H02J13/00
CPCY02E40/72Y02E10/763Y04S10/123Y02E40/30Y02E10/76Y02E40/70
Inventor 石磊陈宁
Owner STATE GRID ELECTRIC POWER RES INST
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