Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wind farm coordinated optimization control method based on improved sensitivity algorithm

A technology for optimal control and wind farms, applied in wind power generation, AC network voltage adjustment, reactive power compensation, etc., and can solve problems such as non-optimal droop gain

Active Publication Date: 2019-06-25
STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is obviously not optimal to adopt a fixed droop gain for each grid-side inverter

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
  • Wind farm coordinated optimization control method based on improved sensitivity algorithm
  • Wind farm coordinated optimization control method based on improved sensitivity algorithm
  • Wind farm coordinated optimization control method based on improved sensitivity algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] In order to make the above objects, features and advantages of the present invention more comprehensible, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be pointed out that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all those skilled in the art can obtain without creative work. Other embodiments all belong to the protection scope of the present invention.

[0062] The structure of the control system of the present invention is as figure 1 As shown, the voltage of each node of the feeder is measured by the measuring element, the reactive power-voltage sensitivity is calculated, and then the voltage prediction at the next moment is performed in step 5 to obtain the voltage prediction value, which can be used as a voltage constraint. ...

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 a wind farm coordinated optimization control method based on an improved sensitivity algorithm. The intermittence and the randomness of wind power can cause wind farm voltage fluctuation and threaten the safe and stable operation of the wind farm. A common connection point is poor in voltage stability and has serious voltage fluctuation caused by the fluctuation of the windpower output. The change of the reactive power output inside the wind farm can also cause the fluctuation of the terminal voltage of a wind-driven generator and reduce the running stability of the wind-driven generator. The method, in view of the internal voltage stability problem of the wind farm, comprehensively considers the mutual coordination between the wind-driven generator and a static var generator, obtains the voltage boundary by improving a sensitivity algorithm, performs optimization operation with the minimum network loss as an optimization target and the droop gain coefficientsof various wind-driven generators and reactive power compensation devices as variables, and calculates the optimal droop gain coefficient for each wind-driven generator and reactive power compensationdevice. The method can reduce the line loss of the wind farm while maintaining the voltage stability, and improve the voltage stability and the economic efficiency of a wind power system.

Description

technical field [0001] The invention relates to the technical field of new energy wind power generation, in particular to a wind farm coordination and optimization control method based on an improved sensitivity algorithm, which is suitable for improving voltage stability and economy. Background technique [0002] With the development of renewable energy application technology and the increase of wind power penetration and installed capacity, the randomness and intermittency of wind turbine generators (WTGs) have brought technical challenges to the voltage stability of wind farms and even the regional power grid. challenge. Large-scale wind farms are mainly located in areas far away from the load center, with a small short-circuit ratio, weak voltage stability at the point of common coupling (PCC), and large voltage fluctuations caused by wind power output fluctuations. In addition, the change of reactive power output inside the wind farm will also cause voltage fluctuation...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16
CPCY02E40/30
Inventor 沈阳武王玎左剑崔挺刘嘉彦李勇
Owner STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com