Rapid active power control method and system for wind power plant

A technology of active power and control method, which is applied in the field of fast active power control method and control system of wind farms, can solve problems such as long collector lines, achieve automatic compensation of wind farm network loss, avoid large manual adjustment errors, and quickly and accurately adjust Effect

Pending Publication Date: 2021-09-28
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Wind power generation is different from conventional power sources. The collection lines are long, and most of them are at the end of the power supply grid. The random fluctuation of the output power of wind farms has many adverse effects on the operation of the grid.

Method used

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  • Rapid active power control method and system for wind power plant
  • Rapid active power control method and system for wind power plant

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Experimental program
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Embodiment 1

[0038] Below, the embodiment of the present invention will be described in detail in conjunction with the accompanying drawings,

[0039] like figure 1 As shown, the first embodiment of the present invention provides a fast active power control method for a wind farm, the method includes receiving a dispatch instruction;

[0040] Obtain the measured value of the grid-connected point;

[0041] Calculate the deviation based on the dispatching instruction and the measured value of the grid-connected point, and judge whether to start the active power closed-loop control;

[0042] If it is started, the active power to be output is obtained based on the measured value of the grid-connected point and the scheduling command; otherwise, the scheduling command is directly output to the AGC system of the wind farm;

[0043] The active power output of multiple wind turbines is controlled based on the active power that needs to be output.

[0044] In the embodiment provided by the prese...

Embodiment 2

[0055] like figure 2 As shown, based on the same inventive concept, the second embodiment of the present invention provides a fast active power control system for wind farms. The system includes:

[0056] The AGC server 2 is configured to receive a scheduling instruction; obtain a measured value of a grid-connected point;

[0057] Based on the dispatching instruction and the measured value of the grid-connected point, it is judged whether to start the active power closed-loop control;

[0058] If activated, the active power to be output is obtained based on the measured value of the grid-connected point and the dispatching command;

[0059] The active power output of multiple wind turbines 7 is controlled based on the required output active power.

[0060] The system also includes a remote control host 1 , an EI collector 3 , a first switch 4 , an energy management platform 5 and a second switch 6 . The EI collector 3 collects the measured value of the grid-connected point...

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Abstract

The invention provides a rapid active power control method and system for a wind power plant. The method comprises the steps of adjusting the active output of a wind turbine generator through a wind power plant AGC system and an energy management platform according to a power grid dispatching instruction and the in-station measurement information of the wind power plant, and achieving the active control of a grid-connected point of the wind power plant so as to meet the grid-connected requirements of the power plant. The system collects in-station measurement information of the wind power plant, especially voltage and current information of the grid-connected point, and calculates real-time active power of the grid-connected point. A difference value is obtained between a power grid dispatching given active power value and actually measured active power, and then the difference value is superposed on the power grid dispatching instruction and is output to the wind power plant AGC system and the energy management platform, so that closed-loop regulation of the active power of the grid-connected point is realized, and the purpose of quickly and accurately regulating the active power of the wind power plant is achieved. The system avoids the defects of large manual adjustment error, slow response and the like of the wind power plant, and can automatically compensate the network loss of the wind power plant, so that the active power of the grid-connected point automatically follows the scheduling instruction.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a fast active power control method and a control system of a wind farm. Background technique [0002] Wind power generation is different from conventional power sources. The collection lines are long and most of them are at the end of the power supply grid. Random fluctuations in the output power of wind farms have brought many adverse effects on the operation of the grid. [0003] According to the grid connection requirements of power plants, new energy stations with a total installed capacity of 10MW and above must be equipped with an active power automatic control system (AGC), which receives and automatically executes active power control signals sent by remote power control agencies. The regulatory agency should conduct statistics and assessments on the operating performance of the active power control system of new energy stations with a total inst...

Claims

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Application Information

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IPC IPC(8): H02J3/48H02J3/38
CPCH02J3/48H02J3/381H02J2300/28Y02E10/76
Inventor 张俊杰蔡安民焦冲林伟荣李力森蔺雪峰金强李媛张林伟许扬杨博宇郑磊
Owner HUANENG CLEAN ENERGY RES INST
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