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

Droop control method, device and computer storage medium for DC microgrid

A DC microgrid and control method technology, applied in the direction of circuit devices, battery circuit devices, DC power supply parallel operation, etc., can solve problems such as unbalanced, overcharged and overdischarged charge state values ​​of energy storage units of DC microgrids

Active Publication Date: 2022-07-26
WUHAN INSTITUTE OF TECHNOLOGY
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing droop control method will lead to overcharge and overdischarge of the energy storage unit of the DC microgrid and the unbalanced state of charge value, the present invention provides a droop control method, device and device for the DC microgrid. computer storage media

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
  • Droop control method, device and computer storage medium for DC microgrid
  • Droop control method, device and computer storage medium for DC microgrid
  • Droop control method, device and computer storage medium for DC microgrid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The following examples are further explanations and supplements to the present invention, and do not constitute any limitation to the present invention.

[0042] The following describes a droop control method for a DC microgrid according to an embodiment of the present invention with reference to the accompanying drawings.

[0043] refer to figure 1 As shown, the present invention provides a droop control method for a DC microgrid, including:

[0044] S1, obtain the first output current value of the converter corresponding to the current energy storage unit in real time, and simultaneously obtain the first state of charge value of the current energy storage unit;

[0045] S2, calculating the first droop coefficient corresponding to the current energy storage unit according to the first output current value and the first state of charge value;

[0046] S3. Perform droop control on the current energy storage unit according to the first droop coefficient;

[0047] S4, a...

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 relates to a droop control method, a device and a computer storage medium for a DC microgrid. The droop control method for a DC microgrid includes: acquiring a first output of a converter corresponding to a current energy storage unit in real time current value, and obtain the first state of charge value of the current energy storage unit at the same time; according to the first output current value and the first state of charge value, calculate and obtain the corresponding value of the current energy storage unit The first droop coefficient is calculated according to the first droop coefficient; the current energy storage unit is controlled according to the first droop coefficient; the above steps are used to calculate the corresponding first droop coefficient for each energy storage unit of the DC microgrid respectively, and perform droop control. control. With the help of the above method, the size of the droop coefficient is changed in real time according to the state of charge value of the current energy storage unit, and finally the state of charge value of each energy storage unit tends to be balanced, avoiding the overcharge and overdischarge of the energy storage unit and the state of charge value. unbalanced problem.

Description

technical field [0001] The invention relates to the technical field of direct current microgrid energy storage, and in particular to a droop control method, device and computer storage medium for direct current microgrid. Background technique [0002] In recent years, people have put forward the concept of DC microgrid, which consists of distributed power sources such as photovoltaics and fans, energy storage systems, AC and DC loads, and converters and control systems connected to the AC grid. There is only a balance relationship between the DC bus voltage and active power in a DC microgrid. The fluctuation of the bus voltage reflects the power balance relationship in the system. Therefore, it is necessary to apply a reasonable control to the energy storage system to achieve the purpose of suppressing the busbar fluctuation. The power distribution method of parallel energy storage units usually adopts droop control, which is widely used because of its simple control structu...

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 Patents(China)
IPC IPC(8): H02J1/10H02J7/00
CPCH02J1/10H02J7/0048H02J7/00302H02J7/00306H02J7/00712
Inventor 文小玲王佳杨颖舒李俊周勇
Owner WUHAN INSTITUTE OF TECHNOLOGY
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