Direct-current micro-grid secondary voltage regulation system and control method thereof

A DC micro-grid, secondary voltage regulation technology, applied in the parallel operation of DC power supplies, etc., can solve the problem of inability to adjust the DC bus voltage to its rated value, etc., to improve the quality of load power supply and system operation efficiency, fast response speed, The effect of long cycle life

Active Publication Date: 2016-06-29
TAIYUAN UNIV OF TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional DC microgrid droop voltage regulation system cannot adjust the DC bus vo

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
  • Direct-current micro-grid secondary voltage regulation system and control method thereof
  • Direct-current micro-grid secondary voltage regulation system and control method thereof
  • Direct-current micro-grid secondary voltage regulation system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] A secondary voltage regulation system for a DC microgrid, including a vanadium battery energy storage system and a voltage regulation controller;

[0049] The vanadium battery energy storage system includes a vanadium battery, a bidirectional DC / DC converter, and a vanadium battery detector;

[0050] The vanadium battery is connected to the DC bus through a bidirectional DC / DC converter; the vanadium battery detector is connected to the vanadium battery;

[0051] The voltage regulating controller is respectively connected with the DC bus, the vanadium battery detector, the bidirectional DC / DC converter in the vanadium battery energy storage system, the second bidirectional DC / DC converter in the hybrid energy storage system, and the bidirectional DC converter in the grid-connected system. / AC converter connection.

[0052] A control method for a DC microgrid secondary voltage regulation system (the method is realized based on a DC microgrid secondary voltage regulation...

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 direct-current micro-grid voltage regulation system and particularly relates to a direct-current micro-grid secondary voltage regulation system and a control method thereof, aiming at the solving the problem that voltage of a direct-current bus cannot be regulated to a rated value by a traditional direct-current micro-grid droop voltage regulation system. The direct-current micro-grid voltage regulation system comprises a vanadium battery energy storage system and a voltage regulation controller, wherein the vanadium battery energy storage system comprises a vanadium battery, a bidirectional DC/DC (Direct Current/Direct Current) converter and a vanadium battery detector; the vanadium battery is connected with the direct-current bus through the bidirectional DC/DC converter; the vanadium battery detector is connected with the vanadium battery; and the voltage regulation controller is connected with the direct-current bus, the vanadium battery detector, the bidirectional DC/DC converter in the vanadium battery energy storage system, a second bidirectional DC/DC converter in a mixed energy storage system, and a bidirectional DC/AC (Direct Current/Alternating Current) converter in a connected-grid system. The direct-current micro-grid secondary voltage regulation system is suitable for direct-current micro-grids.

Description

technical field [0001] The invention relates to a DC micro-grid voltage regulation system, in particular to a DC micro-grid secondary voltage regulation system and a control method thereof. Background technique [0002] Due to its simple control method, no need to consider reactive power, frequency, and phase synchronization, and a series of advantages such as island operation and grid-connected operation, DC microgrid has received extensive attention in recent years. Such as figure 1 As shown, the DC microgrid involved in the present invention is composed of a DC bus, a photovoltaic power generation system, a hybrid energy storage system (HybridEnergyStorageSystem, HESS), a grid-connected system and a load part. Among them, the photovoltaic power generation system is composed of a photovoltaic array and a boost converter. The hybrid energy storage system consists of a lithium battery pack, a first bidirectional DC / DC converter, a supercapacitor, and a second bidirectional...

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): H02J1/12
CPCH02J1/12
Inventor 韩肖清任春光米芝昌王鹏
Owner TAIYUAN UNIV OF TECH
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