Method and system for direct-current microgrid virtual inertia control considering parameter self-optimization

A technology of DC micro-grid and virtual inertia, which is applied in the direction of DC network circuit devices, electrical components, circuit devices, etc., can solve the problems of DC micro-grid system with small inertia busbar voltage and power fluctuations, etc., to optimize transient response and improve System response characteristics, the effect of system inertia improvement

Active Publication Date: 2019-04-05
STATE GRID XINJIANG ELECTRIC POWER CO ECONOMIC TECH RES INST +3
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above defects or improvement needs of the prior art, the present invention provides a DC microgrid virtual inertia control method and system considering parameter self-optimization, th

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
  • Method and system for direct-current microgrid virtual inertia control considering parameter self-optimization
  • Method and system for direct-current microgrid virtual inertia control considering parameter self-optimization
  • Method and system for direct-current microgrid virtual inertia control considering parameter self-optimization

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035]In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] The invention proposes a virtual inertial control method and system for a DC microgrid considering parameter self-optimization, which enhances the inertia of the DC microgrid system, and the inertia can be adaptively adjusted with the system state, which makes up for the shortcomings of current research; The inertia and damping similar to that of synchronous generators are introduced into the ...

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 method and a system for direct-current microgrid virtual inertia control considering parameter self-optimization. The method comprises the steps that firstly, according to the response characteristics of a microgrid system in power fluctuation and the characteristic that the virtual inertia and the virtual damping coefficient of the microgrid system have flexibility and variability, the change condition of control parameters needed when disturbance occurs is analyzed and obtained, and a control strategy for self-optimization of the virtual inertia coefficient and thevirtual damping coefficient is provided accordingly; A small signal model is established to analyze the response characteristics of the DC/DC converter under the proposed DC microgrid virtual inertiaand damping coefficient self-optimizing control strategy, and the influence of key control parameters on the system response characteristics and the system stability is discussed. And finally, a direct-current microgrid model is established in PSCAD/EMTDC for simulation analysis, and the comparison result verifies the correctness and effectiveness of the provided control strategy.

Description

technical field [0001] The invention belongs to the field of DC micro-grid operation control, and more specifically relates to a DC micro-grid virtual inertia control method and system considering parameter self-optimization. Background technique [0002] The excessive exploitation and utilization of fossil energy has caused resource depletion and environmental pollution. The energy situation faced by human society is becoming more and more severe. Therefore, countries all over the world attach great importance to the development of renewable energy. The importance of distributed power generation technology with renewable energy as the main body and the micro-grid built by distributed power generation units has become increasingly prominent. Microgrid mainly includes DC microgrid and AC microgrid. Compared with AC microgrid, DC microgrid has the advantages of simple conversion device and lower cost, and DC microgrid does not need to consider reactive power and frequency issu...

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): H02J1/00
CPCH02J1/00
Inventor 曹新慧刘昱良苗世洪车勇刘子文李忠政彭素江李娟周二彪栗磊赫嘉楠
Owner STATE GRID XINJIANG ELECTRIC POWER CO ECONOMIC TECH RES INST
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