High-frequency arc modeling method for circuit breaker

A high-frequency arc and modeling method technology, which is applied in the fields of instruments, electrical digital data processing, special data processing applications, etc. Overcome the effects of inaccurate parameters and high modeling accuracy

Inactive Publication Date: 2017-09-22
JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +2
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The most commonly used method for high-frequency arcing modeling is the three-stage high-frequency arcing model based on traditional variable resistors, which can better simulate the arcing stage of high-frequency arcing faults in circuit breakers, but only uses the empirical index formula Unable to respond to the transient recovery voltage characteristics of the arc-extinguishing phase of the circuit breaker
In addition, the existing commonly used arc models are represented by the Cassie model and the Mayr model. The modeling mechanism of the Cassie model is to dynamically compare the magnitude of the transient arc voltage and the arc steady-state voltage, which

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 arc modeling method for circuit breaker
  • High-frequency arc modeling method for circuit breaker
  • High-frequency arc modeling method for circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] 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.

[0027] 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 combinatio...

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 relates to a high-frequency arc modeling method for a circuit breaker, and belongs to the technical field of power system protection and fault monitoring. According to the method, a three-section type arc whole process model is built according to changes of arc currents at different moments. A pre-arcing stage is represented by using a conventional time-varying resistor model; a steady-state arcing stage is represented by using a settable fixed resistance value; and an arcing stage is represented by using a Mayr arc model. The arc modeling method provided by the invention can provide a theoretical basis for arcing fault early warning and identification of the circuit breaker.

Description

technical field [0001] The invention belongs to the technical field of power system protection and fault monitoring, and in particular relates to a high-frequency arc modeling method for a circuit breaker. Background technique [0002] With the improvement of the power supply quality requirements of the distribution network, especially the voltage quality requirements, the circuit breaker in the branch circuit of the AC filter needs to operate frequently to switch the capacitor bank. Circuit breakers switch high-voltage capacitive circuits, and the working environment is harsh, which is easy to induce transient overvoltage problems; there have been many reports that circuit breakers broke down again after switching off high-voltage capacitive circuits, resulting in vicious accidents of circuit breaker explosions. [0003] If real-time monitoring of high-frequency arcs caused by circuit breaker breakdown can be realized, early warning of such faults or hidden dangers can be r...

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): G06F17/50
CPCG06F30/367
Inventor 袁冰刘宗杰王宾徐刚赵岩明亮马良肖云东丁子甲
Owner JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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