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

Wind power field power adjusting system based on super capacitor

A power regulation system and supercapacitor technology, applied in the direction of AC network voltage regulation, reducing/preventing power oscillation, etc., can solve problems such as unable to stabilize active power fluctuations and limited power regulation capabilities, and achieve reduced impact, good dynamic performance, and suppression The effect of grid voltage fluctuations

Inactive Publication Date: 2017-06-20
李晓波
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the active power fluctuation of wind power usually adopts the method of directly adjusting the operating state of the wind turbine to smooth its output power, but the power regulation ability of this method is limited; the reactive power fluctuation usually uses a parallel static var compensation device for reactive power regulation, but the reactive power Compensation device cannot stabilize active power fluctuations

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 power field power adjusting system based on super capacitor
  • Wind power field power adjusting system based on super capacitor
  • Wind power field power adjusting system based on super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] figure 1 In the system, the point of common connection (PCC) is connected to the local load, the supercapacitor bank (SC) is used as the energy storage element on the DC side, and the power conditioning system (PCS) uses a four-quadrant voltage source converter (VSC) cascaded bidirectional DC conversion The converter (Bi-DC / DC) structure is finally connected in parallel to the busbar at the output end of the wind farm through a step-up transformer. Wind farm power regulation mode: When the active power fluctuation of the set frequency band is detected, the device quickly absorbs the fluctuating active and reactive power, smoothes the wind farm power output, and maintains the stability of the bus voltage at the output end of the wind farm. Charge and discharge mode: On the one hand, when the device is initially installed or restarted after maintenance, the super capacitor bank is charged to a preset voltage value, and the stored electric energy of the super capacitor ban...

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

A wind power field power adjusting system based on a super capacitor comprises four parts: a system main circuit, network control, super capacitor energy management, and current transformer control. The system uses a super capacitor bank as an energy storage element to stabilize the active and reactive power fluctuation of the wind power field, to maintain the output terminal voltage of the wind power field and to reduce the influence of the wind power field on the power quality of a power grid. The wind power field power adjusting device has good dynamic performance, can well absorb the fluctuation components of the output reactive power of the wind power field to have an effect of suppressing the voltage grid fluctuation, and smoothens the active power fluctuation input into the power grid.

Description

technical field [0001] The invention relates to a wind farm power regulation system, in particular to a wind farm power regulation system based on a supercapacitor. Background technique [0002] With the continuous increase of wind power installed capacity, the adverse impact of wind power output power fluctuation on the grid has been paid more and more attention. Wind power is currently the fastest growing renewable energy generation technology. However, wind energy is a randomly changing energy source, and changes in wind speed will cause fluctuations in the output power of wind turbines, which will affect the power quality of the grid. Therefore, studying the output power regulation of grid-connected wind farms has become an important issue in wind power generation technology. [0003] At present, the active power fluctuation of wind power usually adopts the method of directly adjusting the operating state of the wind turbine to smooth its output power, but the power re...

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): H02J3/24H02J3/12
Inventor 李晓波
Owner 李晓波
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