Active control method and system for improving AGC control performance of wind power plant

A technology of control performance and control method, which is applied in the direction of wind power generation, electrical components, circuit devices, etc., and can solve the problem of deviation from distribution value, large error of wind turbine speed and pitch control, and AGC adjustment accuracy of wind farm does not meet the limit requirements, etc. problem, achieve the effect of improving control performance and shortening response time

Active Publication Date: 2021-02-05
NARI NANJING CONTROL SYST
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by meteorological conditions, especially when the wind speed changes suddenly, the output power of the model wind turbines drops and rises sharply, making the change of the actual active power value of the wind farm grid-connected point exceed the dead zone of active power regulation at the grid-connected point

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active control method and system for improving AGC control performance of wind power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further described below in conjunction with specific examples.

[0036] like figure 1 As shown, an active power control method for improving the AGC control performance of a wind farm includes the following steps:

[0037] Step 1): According to the active power control response time of each controllable wind turbine in the wind farm, divide the controllable wind turbine into different adjustment speed levels.

[0038] Further, the adjustment speed level division method in the step 1) is: from the minimum value to the maximum value of the active power control response time of the controllable wind turbine, it is divided into N intervals on average, and each interval corresponds to an adjustment Speed ​​level, each controllable wind turbine is classified into the interval corresponding to each adjustment speed level according to the active power control response time, and the upper limit value of each interval is taken as the equivalent resp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an active control method and system for improving the AGC control performance of a wind power plant, and the method comprises the steps: making the most of wind turbines with ahigh adjustment speed according to the difference of the active power control response time of different wind turbines, repeatedly and quickly tracking the active power instruction value of a grid-connected point, and shortening the AGC response time; when the active power fluctuation of the wind turbine generator with the AGC function quitting leads to that the active variable quantity of the grid-connected point exceeds a dead zone, immediately redistributing to reduce the distribution interval time. Different distribution reference values are adopted according to different active power distribution triggering conditions, and the phenomena that the distribution result is too large or too small and oscillation occurs in the adjusting process due to the fact that the active power reference values, participating in calculation, of the grid-connected point and the wind turbine generator are inaccurate are avoided. By compensating the active power output error of the wind turbine generator, the deviation between the active power distribution value and the actual value of the wind turbine generator is reduced, and the AGC regulation precision of the wind power plant is improved.

Description

technical field [0001] The invention relates to an active power control method and system for improving AGC control performance of a wind farm, and belongs to the technical field of electric power system control. Background technique [0002] In recent years, wind power has been vigorously developed as a renewable clean energy power generation. Due to the randomness and volatility of wind power, it brings a series of problems to the safe operation of the power grid. In order to ensure the safe and stable operation of the power grid, wind farms connected to the power grid are required to have power regulation capabilities, and the regulation performance requirements are getting higher and higher. "NB / T 31078-2016 Wind Farm Grid-connected Performance Evaluation Method" puts forward specific requirements for the limit value of AGC control indicators of wind farms, so it is necessary to study the control method of active power of wind farms, improve the AGC control performance ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J3/48H02J3/38
CPCH02J3/48H02J3/381H02J2300/28Y02E10/76
Inventor 刘双刘杰汤海宁严涛松王汉林柏嵩张建周蒋欣宇刘成林
Owner NARI NANJING CONTROL SYST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap