Supercharge Your Innovation With Domain-Expert AI Agents!

Method and system for suppressing flexible direct-current near-zone single-phase short-circuit current

A flexible DC, single-phase short-circuit technology, applied in the field of power systems

Pending Publication Date: 2021-02-12
CHINA ELECTRIC POWER RES INST
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical solution of the present invention provides a method and system for suppressing single-phase short-circuit current in the vicinity of flexible DC to solve the problem of how to suppress single-phase short-circuit current in the vicinity of flexible DC

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 suppressing flexible direct-current near-zone single-phase short-circuit current
  • Method and system for suppressing flexible direct-current near-zone single-phase short-circuit current
  • Method and system for suppressing flexible direct-current near-zone single-phase short-circuit current

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0034] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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 system for suppressing a single-phase short-circuit current of a flexible direct-current near region. The method comprises the following steps: establishing a near-region electromagnetic transient simulation data model of a flexible direct-current converter station; setting a station-level control mode of the flexible direct-current power transmission system; based on the electromagnetic transient simulation data model, obtaining a single-phase short-circuit current of a near-zone bus of the flexible direct-current converter station; judging whether the single-phase short-circuit current of the bus of the flexible direct-current converter station needs to be controlled or not; when the single-phase short-circuit current of the bus of the flexible direct-current converter station needs to be controlled, adjusting the positive-sequence current amplitude limiting constant value of the flexible direct-current converter station, and judging whether the adjusted single-phase short-circuit current of the bus of the flexible direct-current converter station needs to be controlled or not; and when the adjusted single-phase short-circuit current of the bus of the flexible direct-current converter station needs to be controlled, configuring a fault current limiter for a grounding branch of a flexible direct-current converter transformer station or a standard-exceeding station to suppress the near-zone single-phase short-circuit current of the flexible direct-current converter station.

Description

technical field [0001] The present invention relates to the technical field of power systems, and more specifically, to a method and system for suppressing single-phase short-circuit current in the flexible direct current near zone. Background technique [0002] In the operation of power system, single-phase short-circuit fault is one of the most common faults, and the asymmetric short-circuit current generated by it will have a serious impact and consequences on the safe and stable operation of the power system. Flexible DC transmission technology has independent control of active and reactive power, passive system power supply and DC networking capabilities, and is more and more widely used in engineering applications worldwide. solution. So far, nearly 30 flexible DC transmission projects and nearly 100 conventional DC transmission projects have been put into operation around the world. However, there is still a lack of research on the short-circuit current problem afte...

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): H02H9/02
CPCH02H9/02
Inventor 霍启迪唐晓骏马世英吉平吕思卓谢岩李晓珺李媛媛陈萌李晶罗红梅李立新张恺陈怡君张鑫陈湘高雯曼李慧玲
Owner CHINA ELECTRIC POWER RES INST
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com