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Metering device

A metering device and power quality technology, which is applied in the electronic field, can solve problems such as the algorithm error of the analog-to-digital conversion metering device for transformer conversion, and achieve the effects of eliminating fence effects, high algorithm stability, and high reliability

Pending Publication Date: 2020-01-07
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, a series of disturbances, errors caused by transformer conversion, rounding errors of analog-to-digital conversion, losses during transmission, and algorithm errors of metering devices will inevitably be introduced.

Method used

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Embodiment Construction

[0037] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.

[0038] Three-phase alternating current is a form of transmission of electrical energy, referred to as three-phase power. Three-phase AC power supply is a power supply composed of three AC potentials with the same frequency, equal amplitude, and 120° phase difference.

[0039] libpcap is a network packet capture function package under the unix / linux platform, and most network monitoring software is based on it.

[0040] see Figure 1-7 ,...

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Abstract

The application, which belongs to the technical field of electronics, particularly relates to a metering device. In the prior art, the electric energy quality analysis precision is poor, and the analyzable electric energy quality indexes are reduced and incomplete. The application provides a metering device comprising a data acquisition unit and a data processing unit which are in communication connection. The data acquisition unit is used for collecting an electric energy signal, converting the electric energy signal into a digital signal and transmitting the digital signal to the data processing unit. The data processing unit is used for receiving the digital signal, analyzing the digital signal, calculating an electric energy quality index and displaying and transmitting the electric energy quality index. Analog-to-digital conversion is carried out on three-phase power of a distribution network by using the high sampling frequency and sampling precision to obtain three-phase digitalsignals and an electric energy quality index is obtained according to the three-phase digital signals, so that the precision of measuring the electric energy quality index of the power distribution network is improved.

Description

technical field [0001] The present application belongs to the field of electronic technology, and in particular relates to a metering device. Background technique [0002] In the modern distribution network, the use of a large number of new energy and power electronic devices makes the power flow in the distribution network change rapidly, there are too many high-frequency interference signals, the harmonic components are complex, and the grid voltage or current waveform is seriously distorted, which not only affects the power The service life of the equipment will also cause the relay and other equipment to malfunction and cause power failure. [0003] On the other hand, there are currently a large number of equipment sensitive to power quality in the high-tech and information industries, and power companies and power sales companies are paying more and more attention to line loss control, which makes people put forward the evaluation test for power reliability and safety. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R22/06
CPCG01R31/00G01R22/063G01R22/10
Inventor 孙丰瑞张杭张爱民张嘉彤张伟张元歆孟文新
Owner XI AN JIAOTONG UNIV
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