Three phase harmonic standard electric energy meter

A standard electric energy meter and harmonic technology, which is applied in the direction of measuring electric variables, measuring devices, instruments, etc., can solve problems such as calibration and traceability of harmonic electric energy meters, and achieve convenient man-machine operation interface, strong reliability and safety , the effect of simplifying the operation steps

Active Publication Date: 2009-03-11
NINGBO WEIJI ELECTRIC POWER TECH
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the power sector needs to use a large number of harmonic energy meters, and the standard energy meters currently used by domestic power testing departments, metering departments, and production companies cannot calibrate and trace the source of harmonic energy meters, there is an urgent need for corresponding high-level harmonics. The standard electric energy meter verifies and calibrates it

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
  • Three phase harmonic standard electric energy meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] refer to figure 1 , a three-phase harmonic standard electric energy meter, including a harmonic electric energy metering module 1, and the harmonic electric energy metering module 1 includes an AC voltage for converting input AC voltages of different amplitudes into an AC voltage acceptable to an analog-to-digital converter The voltage conversion unit 2 of the small voltage signal, the current conversion unit 3 used to convert the input AC current of different amplitudes into the AC voltage small signal acceptable to the analog-to-digital converter, the voltage conversion unit 2 and the analog voltage The first ADC conversion unit 4 that converts the signal into a digital signal is connected, and the current conversion unit 3 is connected with the second ADC conversion unit 5 that converts the analog voltage signal into a digit...

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 triphase harmonic standard electric energy meter comprises a harmonic electric energy measuring module which comprises a voltage conversion unit and a current conversion unit, wherein, the voltage conversion unit is connected with a first ADC conversion unit, the current conversion unit is connected with a second ADC conversion unit; the harmonic electric energy measuring module also comprises a DSP computing module which comprises an FFT conversion module used for computing the amplitude value and the phase position value of the harmonic output by the FFT conversion module so as to obtain a amplitude value phase position compensation module of each harmonic parameter. The triphase harmonic standard electric energy meter also comprises a communication module used for the communication of the harmonic electric energy measuring module with the outside, the communication module is connected with a display screen and a human-computer interaction module and comprises an RS232 interface used for being connected with the external control equipment. The invention provides a triphase harmonic standard electric energy meter used for carrying out calibration and detection to the harmonic electric energy meter.

Description

(1) Technical field [0001] The invention relates to a three-phase harmonic standard electric energy meter. (2) Background technology [0002] With the development of modern industry and transportation, metallurgy, chemical industry and other heavy industries and electrified railways, the factors affecting power quality are becoming more and more complicated, the main one is power harmonics. The impact and harmonics generated by these nonlinear loads on the power grid not only pose a great hazard to the stable and safe operation of power system equipment and the power grid, but also affect the rationality and fairness of traditional meters for electric energy measurement. Therefore, the high-precision multi-function electric energy meter with harmonic monitoring and measurement has become a new generation of electric energy metering products that have been promoted and applied by the power sector in recent years, and it has also provided the power sector with certain means an...

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): G01R35/04G01R23/16
Inventor 吴伟宗
Owner NINGBO WEIJI ELECTRIC POWER TECH
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