Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

High-power converter grounding scheme of full-through type flexible alternating-current traction power supply system

A traction power supply system, through-type technology, applied in the field of high-power converter grounding solutions, can solve problems such as difficulty in obtaining and inaccurate distributed capacitance parameters, and achieve the effect of accurately identifying, clearing, and suppressing overcurrent and overvoltage conditions.

Active Publication Date: 2021-06-22
TSINGHUA UNIV +2
View PDF13 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Grounding methods include direct grounding, grounding through resistance or arc suppression coil, among which, grounding through resistance or arc suppression coil can effectively suppress the fault current, and grounding through arc suppression coil can also overcompensate the distributed capacitance current, but distributed capacitance The parameters are inaccurate and difficult to obtain in the design stage, so the parameters of the arc suppression coil often need to be adjusted according to the actual situation on site

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
  • High-power converter grounding scheme of full-through type flexible alternating-current traction power supply system
  • High-power converter grounding scheme of full-through type flexible alternating-current traction power supply system
  • High-power converter grounding scheme of full-through type flexible alternating-current traction power supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] The most common topology of the high-power converter of the fu...

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 high-power converter of a full through type flexible alternating current traction power supply system, which is suitable for a system scheme that an input transformer and an output transformer isolate a power grid from a contact network. A common topological structure comprises the input transformer, an alternating current-direct current-alternating current multi-level converter and the output transformer; when a converter link of the full-through type flexible alternating-current traction power supply system has a grounding fault, if more than one running traction converter station exists on the contact network, the selected grounding method can effectively restrain overcurrent and overvoltage conditions of each element, the power supply voltage of the contact network is hardly influenced, and the protected system can quickly and accurately identify and clear.

Description

technical field [0001] The invention relates to the technical field of rail transit traction power supply, in particular to a grounding scheme for a high-power converter of a full-through flexible AC traction power supply system. Background technique [0002] The electrical phase separation link in the traditional railway traction power supply method seriously restricts the safe and reliable operation of high-speed and heavy-duty trains, and at the same time brings increasingly prominent power quality problems such as negative sequence and harmonics to the external power grid. [0003] The fully through-type flexible AC traction power supply technology realizes the complete decoupling of the power supply network and the catenary through the multi-level converter technology, which can completely cancel the electric phase separation of the whole line, improve the power supply quality, power supply reliability and power supply capacity of the catenary and The fault ride-through...

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): B60L53/12
CPCH02H9/02H02J3/36Y02T10/70Y02T10/7072Y02T90/14
Inventor 魏应冬李增勤李笑倩赵印军李子明林云志陆超黄红志谢小荣张树卿
Owner TSINGHUA UNIV
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
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