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

Low-voltage power line noise recording and injecting system

A low-voltage power line and injection system technology, applied in distribution line transmission systems, line transmission components, line transmission monitoring/testing, etc., can solve the problem of inability to collect and analyze low-voltage power line characteristics.

Inactive Publication Date: 2020-04-17
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
View PDF14 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing equipment is difficult to restore the real interference environment on site, and it is impossible to comprehensively and effectively collect and analyze the characteristics of low-voltage power lines

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
  • Low-voltage power line noise recording and injecting system
  • Low-voltage power line noise recording and injecting system
  • Low-voltage power line noise recording and injecting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0022] A low-voltage power line noise recording and injection system, which can record the noise signal on the power line in the field environment, restore it in the laboratory environment, simulate the field environment in the laboratory, and realize the restoration of the field environment. To test the communication success rate of carrier communication equipment in the power network, the innovations are:

[0023] like figure 1 As shown, the system records and stores the noise on the on-site power line, and plays back the noise signal through the arbitrary waveform generator, so as to simulate and reproduce the noise in the on-site environment and the noise environment required for testing, and realize the power line carrier communication The device is tested for communication performance.

[0024] The system includes a high-frequency coupling ...

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 low-voltage power line noise recording and injecting system, and the system comprises a power line interface, a power module, a power line coupling filter, a power amplifier, an arbitrary waveform generator and a power line communication signal detecting and analyzing device. According to the system, on-site noise is recorded and stored, and on-site noise signals are restored through any signal generator in a laboratory, so that the working characteristics of the power line carrier communication module in an on-site noise environment are verified; high-voltage mainssupply is isolated through the power line coupling filter, so a measuring instrument is isolated from strong current, the safety of measuring equipment is ensured, noise outside a test frequency bandis filtered, useless signal interference is reduced, and the system provides a basis for an anti-interference test of the low-voltage carrier communication module.

Description

technical field [0001] The invention relates to the technical field of power line carrier communication, in particular to a low-voltage power line noise recording and injection system. Background technique [0002] Power line carrier is a unique and basic communication method of power system. Harmonic interference plays a decisive role in the reliability of power line carrier communication. Many household appliances are the main source of power grid harmonics because they have voltage regulation and rectification devices. For example: TV sets, dimming lamps, thermostat cooking utensils, video recorders, computers, etc. Although the individual capacity of these devices is not large, there are a large number of them in a certain community, which leads to the increase of harmonic superposition interference to a level that cannot be ignored, and poses a serious threat to electricity safety, reliable power supply, and power line meter reading network. Power line carrier communic...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/46H04B3/56
CPCH04B3/46H04B3/56
Inventor 王玥李祯祥陈晓芳王崇刘卿李蓓丁欣赵茜茹张永强王季孟
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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