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Wind power active power automatic control method for wind farm monitoring system

A technology for active power and monitoring systems, applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as the inability to realize automatic power regulation of wind farms, achieve powerful automatic control functions of wind power, improve operation and management levels, and achieve automated effects

Inactive Publication Date: 2019-03-26
南京天谷电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that the online automatic power adjustment of wind farms cannot be realized, and propose a method for automatic control of wind power active power used in wind farm monitoring systems

Method used

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  • Wind power active power automatic control method for wind farm monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] refer to figure 1 , an automatic control method for wind power active power used in a wind farm monitoring system, S1, adopting the maximum output mode, and entering step S2;

[0022] S2. Maximum output mode: according to the set maximum change rate of active power λ, increase λP per minute max Adjust the real-time active output of the wind farm to min{P max ,P ava}, where P max is the maximum active power output of the wind farm, P ava is the maximum available active output of the wind farm, when the installed capacity of the wind farm P ins When rmax ≤6MW / min, when 30MW≤P ins ≤150MW, λ·P rmax ≤P ins / 5, when P ins When >150MW, λ·P rmax ≤30MW / min, go to step S5;

[0023] S5. Distribute the obtained real-time active output of the wind farm to each wind turbine according to the capacity ratio of the wind turbine, and perform active power regulation to complete a control of the active output of the wind farm;

[0024] S6. Sampling the regulated real-time active...

Embodiment 2

[0027] refer to figure 1 , an automatic wind power active power control method used in a wind farm monitoring system, S1, judging the control mode, adopting the plan tracking mode, and entering step S3;

[0028] S3. Plan tracking mode: increase λP per minute according to the set maximum change rate λ of active power max Adjust the real-time active output of the wind farm to min{P plan ,P ava}, where P plan For the power generation plan issued by the dispatching department, go to step S5;

[0029] S5. Distribute the obtained real-time active output of the wind farm to each wind turbine according to the capacity ratio of the wind turbine, and perform active power regulation to complete a control of the active output of the wind farm;

[0030] S6. Sampling the regulated real-time active output of the wind farm. If the requirement of the active output regulation instruction is satisfied, exit the control and wait for the next regulation instruction. Otherwise, return to step S...

Embodiment 3

[0033] refer to figure 1 , an automatic control method for wind power active power used in a wind farm monitoring system, S1, judging the control mode, adopting an adaptive adjustment mode, and entering step S4;

[0034] S4. Adaptive adjustment mode: judge the grid frequency information, when the grid frequency is higher than 50.2Hz, according to the set maximum active power change rate λ, reduce λP per minute max Reduce the real-time active output of the wind farm to αP pre , when the grid frequency is lower than 49Hz, increase λP per minute max Increase the real-time active output of the wind farm to min{βP pre ,P ava}, where α is the down-regulation coefficient ranging from 0 to 0.8, β is the up-regulation coefficient ranging from 1 to 1.5, P pre For the active power output of the current wind farm, go to step S5;

[0035] S5. Distribute the obtained real-time active output of the wind farm to each wind turbine according to the capacity ratio of the wind turbine, and p...

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Abstract

The invention relates to the technical field of the wind farm control in the new energy power generation technology and particularly relates to a wind power active power automatic control method for awind farm monitoring system. The method is characterized by comprising the steps of (S1) judging a control mode, going to a step (S2) if the control mode is a maximum power output mode, going to a step (S3) if the control mode is a planned tracking mode, and going to a step (S4) if the control mode is an adaptive adjustment mode, (S2) performing the maximum power output mode, (S3) performing theplanned tracking mode, (S4) performing the adaptive adjustment mode, (S5) allocating obtained real-time active power output of a wind farm to each wind turbine according to the capacity proportion ofthe wind turbine and performing active power regulation to complete the active power output control of the wind farm for one time, and (S6) ending control if the requirement of an active output control command is satisfied, and waiting for a next control command, otherwise, returning to the step (S1) after a delay of one second. According to the method, the coordinated operation of a grid-connected wind farm and an accessed region power grid is facilitated.

Description

technical field [0001] The invention relates to the technical field of wind farm control in new energy power generation technology, in particular to an automatic control method for wind power active power used in a wind farm monitoring system. 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 mo...

Claims

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Application Information

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IPC IPC(8): H02J3/48H02J3/38
CPCH02J3/386H02J3/48Y02E10/76
Inventor 丁剑锋徐凯刘永强
Owner 南京天谷电气科技有限公司
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