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

Current measurement method, electronic type current transformer utilized, and new application of the current transformer

A current transformer and current measurement technology, applied in the direction of measuring electricity, measuring electrical variables, measuring current/voltage, etc., to achieve the effect of large dynamic range, high measurement accuracy and small size

Inactive Publication Date: 2005-11-16
向渝
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the many shortcomings of existing electromagnetic induction transformers, one of the purposes of the present invention is to provide a transformer suitable for current measurement, relay protection, automatic control and early fault online monitoring of electrical equipment in power system grids. Current measurement method

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
  • Current measurement method, electronic type current transformer utilized, and new application of the current transformer
  • Current measurement method, electronic type current transformer utilized, and new application of the current transformer
  • Current measurement method, electronic type current transformer utilized, and new application of the current transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] see figure 1 , a current measurement method, is to use the current magnetic field sensing head which is closely combined with the power transmission bus, which is composed of a strong magnetostrictive amorphous alloy sheet and a piezoelectric ceramic, and the linear magnetic field generated by the current flowing through the power transmission bus It becomes a voltage analog signal and transmits the voltage analog signal to the electro-optical conversion device; the electro-optic conversion device converts the voltage analog signal into an analog optical signal, and then sends the analog optical signal to the ground potential side through an optical fiber; on the ground potential side, by The photoelectric conversion device converts the analog optical signal into an analog electrical signal for output. At the same time, the analog electrical signal output by the photoelectric conversion device can be converted into a digital signal by A / D for user selection. Users can ...

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 current measuring method includes utilizing current magnetic field sensing probe formed by piezoelectric ceramic and amorphous alloy to convert current linear magnetic field to be voltage analog signal and sending it to electrooptical converting element where converts electrooptical analog signal to be analog light signal and sends it to earth potential side, converting said light signal to be analog electric signal and converting this electric signal to be digital signal by A / D converter for outputting. The electrical current mutual inductor of the method is also disclosed.

Description

technical field [0001] The invention relates to a current measurement method suitable for current measurement, relay protection, automatic control and early fault on-line monitoring of electrical equipment in the power system grid, as well as the electronic current transformer used in the current measurement method and the New uses for transformers. Background technique [0002] At present, the current transformers used for current measurement and relay protection in the power system grid are mainly based on the principle of electromagnetic induction. The current signal is obtained by connecting the primary coil in series in the power line, and the external circuit of the secondary winding is connected with a measuring instrument or The relay protection and automatic control device completes the functions of current measurement, equipment protection and automatic control. The primary and secondary windings are wound on the iron core of the electromagn...

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): G01R19/00
Inventor 欧阳南尼向渝
Owner 向渝
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