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

Method for improving metering precision of intelligent ammeter

A technology for measurement accuracy and smart meters, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve problems such as high prices, achieve the effects of improving error accuracy, ensuring accuracy and fairness, and protecting user interests

Active Publication Date: 2016-01-06
HEXING ELECTRICAL
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a terminal for measuring electric energy, smart electric energy meters are continuously put forward by power companies and electric power users to improve the accuracy. Manufacturers try to achieve it in different ways. Now the commonly used methods to improve accuracy are: choose a metering chip with a wider dynamic range or Use high-precision AD, but the price is more expensive

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 improving metering precision of intelligent ammeter
  • Method for improving metering precision of intelligent ammeter
  • Method for improving metering precision of intelligent ammeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In this embodiment, a method for improving the measurement accuracy of a smart meter includes:

[0032] Divide the working temperature range of the meter from -40°C to +70°C into N1...Nm intervals, calculate the voltage compensation gain value Ugain and the voltage compensation gain value Igain according to the following formula, and update them in real time, so as to improve the measurement of voltage and current at different temperature points Accuracy, according to P=U*I, the power accuracy is also improved, and the measurement accuracy and power accuracy are consistent.

[0033] Ugain=Ugb±(Tx-Tn)*U;

[0034] Igain=Igb±(Tx-Tn)*I;

[0035] In the formula: Ugain is the voltage gain value after temperature compensation;

[0036] Igain is the current gain value after temperature compensation;

[0037] Ugb is the voltage gain value of the benchmark calibration point, and in this scheme, the benchmark is the voltage gain value at 25°C;

[0038] Igb is the current gain ...

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 method for improving metering precision of an intelligent ammeter, for the purpose of providing a method for improving metering precision of an intelligent ammeter. The method has the advantages of wide metering range and low cost. The scheme is as follows: the work temperature scope -40 DEG C to +70 DEG C of the ammeter is divided into 1, ... Nm intervals, and a voltage compensation gain value Ugain and a voltage compensation gain value Igain are calculated according to the formulas Ugain=Ugb+ / -(Tx-Tn)*U and Igain=Igb+ / -(Tx-Tn)*I and updated in real time. The method provided by the invention is applied to the field of an intelligent ammeter.

Description

technical field [0001] The invention relates to a method for improving the measurement accuracy of an intelligent electric energy meter, which is mainly used in the intelligent electric meter industry. Background technique [0002] As a terminal for measuring electric energy, smart electric energy meters are continuously put forward by power companies and electric power users to improve the accuracy. Manufacturers try to achieve it in different ways. Now the commonly used methods to improve accuracy are: choose a metering chip with a wider dynamic range or Use high-precision AD, but the price is more expensive. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for improving the measurement accuracy of the smart electric meter in view of the above existing problems, which has a wide measurement range and low cost. [0004] The technical solution adopted in the present invention is: a method for improving t...

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): G01R22/00
Inventor 周良璋徐全伟范有张敏刘美飞
Owner HEXING ELECTRICAL
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