Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for judging inter-turn short-circuit fault of reactor

A technology of inter-turn short-circuit faults and reactors, which is applied in the direction of instruments, measuring electricity, and measuring electrical variables, etc., can solve problems such as difficult rapid and accurate judgments, and difficult detection of characteristic variables, and achieves simple methods and real-time monitoring of internal operations situation, the effect of avoiding fire and burning

Pending Publication Date: 2016-06-22
ZHUHAI LANRUIMENG ELECTRIC
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the characteristic variables used for the setting value are not easy to be detected, and it is difficult to make a quick and accurate judgment

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 for judging inter-turn short-circuit fault of reactor
  • Method for judging inter-turn short-circuit fault of reactor
  • Method for judging inter-turn short-circuit fault of reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of 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.

[0030] The average ampere-turn method is often used when calculating the inductance of air-core reactors in engineering. figure 1 It is a schematic diagram of a single-phase model with a turn-to-turn fault simplified by the average ampere-turns method. Among them: L2 is the faulty turn short-circuited by the metal, L1 is the upper part of the reactor faulty turn, L3 is the lower part of the reactor faulty turn, and U is the terminal voltage of the reactor.

[0031...

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 present invention provides a method for judging the inter-turn short-circuit fault of a reactor. According to the method, the inter-turn short-circuit fault of a reactor is judged through detecting the variation of the equivalent resistance of the hollow reactor in the online manner. According to the technical scheme of the invention, the method is simple and high in sensitivity. Particularly, a protection means is additionally provided for operating reactors on the site, so that the operation is simple and feasible. The operating conditions inside reactors can be monitored in real time.

Description

technical field [0001] The invention relates to the field of microcomputer protection of power systems, in particular to a method for judging interturn short-circuit faults of reactors. Background technique [0002] Reactor is an indispensable power equipment in the power system. It is widely used in reactive power compensation devices to limit the impact current or fault current and compensate the capacitive current of the line. With the rapid development of my country's power grid construction, the application of high-voltage air-core reactors is becoming more and more common. [0003] It only takes a few seconds to a dozen seconds for the reactor to burn out from the initial fault stage. If the reactor cannot be removed in time during the fault development stage, it will seriously threaten the safe operation of the power grid and easily lead to major safety accidents. [0004] Turn-to-turn faults in air-core reactors cause changes in characteristic quantities such as ind...

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): G01R31/06
CPCG01R31/72
Inventor 贾跟卯骆福权闫晓斌贺腾飞
Owner ZHUHAI LANRUIMENG ELECTRIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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