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

Synchronized opening of circuit breaker

A technology for circuit breakers and inductive loads, which is applied in the disconnection field of synchronous circuit breakers, and can solve problems such as contact wear and tear

Active Publication Date: 2020-10-23
ABB (SCHWEIZ) AG
View PDF21 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the arcing time should not be too long, otherwise it will cause excessive contact wear

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
  • Synchronized opening of circuit breaker
  • Synchronized opening of circuit breaker
  • Synchronized opening of circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Aspects of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown.

[0028] These aspects may, however, be embodied in many different forms and should not be construed as limiting; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and fully convey the invention in all its aspects. technical personnel in the field. Throughout this specification, the same reference numerals refer to the same elements.

[0029] Circuit breakers in medium voltage systems are often not synchronized due to the additional cost of increasing the synchronization capacity. However, there are some applications where the frequency of operation is extremely high, such as in electric arc furnaces, and contact wear due to unnecessary arcing is more of a problem. In electric arc furnaces, circuit breakers can be switched up to ...

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

A method for synchronizing opening of a circuit breaker is presented. The circuit breaker is arranged to interrupt a current to an inductive load. The method is performed in a control device (2) and comprises measuring (S100) a reference signal as a function of time for a circuit breaker (1) connected to an inductive load (5), obtaining (S110) an indication of a power factor of the inductive loadthrough the circuit breaker, determining (S120) an arcing time for opening of the circuit breaker, the arcing time being dependent on the obtained indication of a power factor, predicting (S130) a zero crossing of a current through the circuit breaker based on the measured reference signal, and providing (S140) contact separation of a contact pair of the circuit breaker at a point of time before the predicted zero crossing, the point of time being determined by the determined arcing time and the predicted zero crossing. A control device, a circuit breaker arrangement, and a computer program for synchronizing opening of a circuit breaker are also presented.

Description

technical field [0001] The present disclosure relates to a method, a control device, a circuit breaker and a computer program for synchronizing opening of circuit breakers. Background technique [0002] Today, circuit breakers in medium voltage systems are generally not synchronized with respect to the phase angle of the voltage or current of the voltage system when closing or opening. However, synchronous methods themselves exist and are commonly used in high voltage systems. If synchronizing on break is used, it is common practice to set the arcing time long enough to ensure that the arc does not reignite after it is extinguished. But the arcing time should not be too long, otherwise it will cause excessive contact wear. [0003] CN 103336474 describes a permanent magnet mechanism for a vacuum circuit breaker. Contents of the invention [0004] One object is to minimize contact wear of the circuit breaker. [0005] According to a first aspect, a method for synchroniz...

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): H01H33/59G05B19/042
CPCH01H33/593G05B19/0423H01H9/56H01H2009/566H02H3/021G01R21/006H01H9/563
Inventor M·巴克曼E·林德尔A·比安科
Owner ABB (SCHWEIZ) AG
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