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

Fast calculation method for short-circuit current of multi-terminal flexible direct-current power grid

A DC power grid and short-circuit current technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of complex short-circuit current solution process, lack of solutions, and difficult program implementation, and achieve easy and efficient implementation, fast calculation speed, and easy extended effect

Active Publication Date: 2018-11-30
SHANDONG UNIV +3
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When solving this system of differential equations, it is generally converted into a system of differential equations (a non-linear system of equations), and then solved using Newton’s method. The entire solution process is complicated and difficult to program.
[0008] To sum up, in the prior art, there is still no effective solution to the problem of complex and low efficiency in the calculation of the short-circuit current of the DC power grid.

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
  • Fast calculation method for short-circuit current of multi-terminal flexible direct-current power grid
  • Fast calculation method for short-circuit current of multi-terminal flexible direct-current power grid
  • Fast calculation method for short-circuit current of multi-terminal flexible direct-current power grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0046] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0047] Explanation of terms:

[0048] EMTP method: Electromagnetic Transients Program Method, numerical integra...

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 fast calculation method for the short-circuit current of a multi-terminal flexible direct-current power grid. The fast calculation method comprises the steps that firstly, aconverter station is equivalent to an RLC series branch, and the equivalent circuit of the direct-current power grid when a short-circuit fault occurs is established; and then the equivalent circuit is solved through an EMTP method, the short-circuit current of the direct-current power grid is obtained, and establishment of a discrete concomitant circuit and establishment and solution of a networkequation are mainly included. The fast calculation method for the short-circuit current of the multi-terminal flexible direct-current power grid is simple, fast and efficient; and the efficiency of calculating the short-circuit current of the direct-current power grid can be greatly improved, and analysis of short circuit of the direct-current power grid is facilitated.

Description

technical field [0001] The invention belongs to the field of calculating the short-circuit current of a DC power grid, and in particular relates to a method for quickly calculating the short-circuit current of a multi-terminal flexible DC power grid. Background technique [0002] Aiming at a series of problems such as low grid connection efficiency of renewable energy, large AC transmission loss, and poor controllability, the multi-terminal DC grid based on voltage source converter is an effective solution. The DC transmission system based on Voltage Source Converter (Voltage Source Converter, VSC) has the characteristics of being able to supply power to passive systems and flexible control, and it is very easy to form a multi-terminal flexible DC grid (Multi-Terminal Direct Current, MTDC). VSC-MTDC is capable of multi-source power supply and multi-drop power receiving, providing a more economical and flexible power transmission method for the world's decentralized renewable...

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): H02H7/26
CPCH02H7/268
Inventor 叶华高仕林刘玉田赵贺李子衿杜延菱刘海涛
Owner SHANDONG UNIV
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