High-frequency magnet ring device for restraining very fast transient overvoltage

A technology of transient overvoltage and magnetic ring, which is applied in the direction of emergency protection circuit devices, circuit devices, emergency protection circuit devices, etc. for limiting overcurrent/overvoltage, and can solve the problems of high cost, low reliability, complex structure, etc. question

Inactive Publication Date: 2013-08-07
TSINGHUA UNIV +3
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-frequency magnetic ring device for suppressing ultra-fast transient

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-frequency magnet ring device for restraining very fast transient overvoltage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] The present invention provides an embodiment of a high-frequency magnetic ring device for suppressing ultra-fast transient overvoltage. For details, see figure 1 , the high-frequency magnetic ring device of this embodiment is fixed on the central conductor 10 of the fully enclosed combined electrical appliance, the high-frequency magnetic ring device includes an insulating sleeve 20, a plurality of magnetic ring groups 30 and an insulating member 40, and the insulating sleeve 20 is sleeved On the central conductor 10 , a plurality of magnetic ring groups 30 are arranged side by side on the outer wall of the insulating sleeve 20 , and the insulator 40 is arranged between two adjacent magn...

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 provides a high-frequency magnet ring device for restraining very fast transient overvoltage (VFTO). The high-frequency magnet ring device is fixed on a center conductor of a gas insulated switchgear, and comprises an insulating sleeve, a plurality of magnet ring groups and insulating pieces. The insulating sleeve is sleeved on the center conductor, the magnet ring groups are parallelly sleeved on the outer wall of the insulating sleeve, and the insulating pieces are arranged between every two adjacent magnet ring groups. With the high-frequency magnet ring device, the defects of complicated structure, high production cost and low reliability of a VFTO restraining method in the prior art are effectively overcome.

Description

technical field [0001] The invention specifically relates to a high-frequency magnetic ring device for suppressing ultra-fast transient overvoltage. Background technique [0002] During the operation of the isolating switch in the fully enclosed combined electrical appliance (Gas Insulate Switchgear, referred to as GIS) in line with the no-load short busbar, due to the multiple breakdowns between the contacts of the isolating switch and the propagation, reflection and superposition of traveling waves inside the GIS , will produce very fast transient overvoltage (Very Fast Transient Overvoltage, referred to as VFTO). The oscillation frequency of VFTO can be as high as hundreds of megahertz, the wave head rise time can be as short as a few nanoseconds, and the oscillation amplitude can theoretically reach up to 3pu. With the continuous improvement of the voltage level of my country's power grid, the threat of VFTO to the insulation of primary power equipment (especially windi...

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): H02H9/04
Inventor 刘卫东陈维江关永刚戴敏岳功昌李心一穆双录
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
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