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Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method

An energy metering and self-adaptive technology, applied in the measurement of electrical variables, current/voltage, measurement devices, etc., can solve problems such as increasing the complexity of installation and maintenance of field equipment

Inactive Publication Date: 2017-04-19
JIANGSU LINYANG ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this application, two types of watt-hour meters need to be installed. In addition to installing an AC metering watt-hour meter, it is also necessary to install a DC watt-hour meter for DC metering, which increases the complexity of field equipment installation and maintenance.

Method used

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  • Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method
  • Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method
  • Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method

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Experimental program
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Effect test

Embodiment 1

[0027] combine figure 1 The principle block diagram of the shown electric energy meter, embodiment 1: a kind of electric energy meter of AC-DC adaptive electric energy metering, it comprises voltage sampling module 1, current sampling module 2, electric energy metering module 8 and single-chip microcomputer control module 9, described voltage sampling Module 1 is used to collect the input voltage, and the current sampling module 2 is used to collect the load current; the signal outputs of the voltage sampling module 1 and the current sampling module 2 are respectively connected to the corresponding signal input terminals of the electric energy metering module 8; the electric energy metering module 8 includes signal detection unit 81, a signal processing unit 82, an A / D conversion unit 83, a high-pass filter 84, and an electric energy metering unit 85, and the input terminals of the signal processing unit 82 are respectively connected to the signal output terminals of the voltag...

Embodiment 2

[0028] Embodiment 2: the watt-hour meter based on the AC-DC adaptive electric energy measurement described in embodiment 1, it also includes a power supply module 3, a communication module 4, a storage module 5, a key module 6 and an LCD display module 7, and the single-chip microcomputer control module 9 is powered by the power supply module 3, and the storage signal end and the communication signal end of the single-chip microcomputer control module 9 are connected with the memory module 5 and the communication module 4 in two phases respectively; The display signal output terminal of the single-chip microcomputer control module 9 is connected with the signal input terminal of the LCD display module 7 .

Embodiment 3

[0029] Embodiment 3: The electric energy meter based on the AC / DC adaptive electric energy metering described in Embodiment 2, the power supply module 3 is a switching power supply.

[0030] The working process is described as follows:

[0031] After power on, firstly initialize the hardware system of the electric energy meter, mainly including the initialization of the single-chip microcomputer control module 9, the electric energy metering module 8, and the storage module 5;

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Abstract

The present invention discloses an electric energy meter having the AC / DC adaptive electric energy measurement function and an electric energy measurement method. The electric energy meter comprises a voltage sampling module, a current sampling module, an electric energy measurement module and a single-chip microcomputer control module. The electric energy measurement module comprises a signal detection unit, a signal processing unit, an A / D conversion unit, a high-pass filter, and an electric energy measurement unit. The signal detection unit of the electric energy measurement module is used for conducting the zero-crossing detection and the frequency measurement on input signals. Based on the dual judgment conditions of a zero signal and a frequency threshold, whether an input signal is an AC signal or a DC signal can be distinguished, so that the AC measurement or the DC measurement is adaptively conducted. According to the technical scheme of the invention, no extra circuit is required, while the input DC or the input AC can be measured. The electric energy meter is simple, practical and reliable. The problem that two types of electric energy meters are respectively required for the AC measurement and the DC measurement in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of electric energy measurement, in particular to an electric energy meter for AC and DC adaptive electric energy measurement and an electric energy measurement method. Background technique [0002] With the development of new energy and distributed energy technologies, the application of renewable energy such as solar energy and DC energy storage is becoming more and more common, which puts forward new requirements for on-site electric energy measurement. In this application, two types of electric energy meters need to be installed. In addition to installing an AC metering electric energy meter, a DC electric energy meter needs to be installed for DC metering, which increases the complexity of field equipment installation and maintenance. Contents of the invention [0003] The object of the present invention is to provide an electric energy meter and electric energy metering method for AC and DC self-adapt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G01R22/10G01R19/175G01R23/15
CPCG05B19/042G01R19/175G01R22/10G01R23/15
Inventor 黄健谢晨旸罗大伟
Owner JIANGSU LINYANG ENERGY CO LTD
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