Field environment based integrated calibrating and analytic device of digital electric energy meter

A technology of field environment and analysis device, applied in the direction of measuring device, measuring electrical variable, instrument, etc., can solve the problem that the accuracy of digital electric energy meter cannot be verified.

Inactive Publication Date: 2017-02-22
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the accuracy of the digital electric energy meter cannot be verified by the actual on-site operating load, and the present invention proposes a comprehensive verification and analysis device for the digital electric energy meter based on the field environment

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  • Field environment based integrated calibrating and analytic device of digital electric energy meter

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0012] The working principle of a comprehensive verification and analysis device for digital electric energy meters based on the field environment in this embodiment is as follows: figure 1 As shown, the verification analysis device is composed of a load acquisition device U1, a load restoration device U2, an analog standard electric energy meter U3 that can convert analog signals into IEC61850 digital signals, and a digital electric energy meter U4 to be tested.

[0013] The load collection device U1 is used to collect various electrical parameters and waveforms of the digital electric energy meters operating on site, mainly collecting the analog quantities at the front end of the merging unit and the output pulses of the digital electric energy meters. Among them, the analog quantity collected by U1 is sent to the load reductio...

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Abstract

A field environment based integrated calibrating and analytic device of digital electric energy meter includes a load collection device, a load reduction device, an analog standard electric energy meter which can convert analog signals in to IEC61850 digital signals and a calibrated digital electric energy meter. The analog standard electric energy meter includes an A/D sampling module sample, an IEC61850 conversion module and an electric energy error calculation module. The device achieves to verify the digital electric energy meter through the actual operating load on the site, and also can verify the digital electric energy meters from different factories in the same field load environment and realize the quantity traceability of the digital electric energy meters. The device is applicable to the digital electric energy meter verification and analysis in the digital environment.

Description

technical field [0001] The invention relates to a digital electric energy meter comprehensive verification analysis device based on the field environment, which belongs to the technical field of electric energy meter verification. Background technique [0002] In the digital substations that have been built and are under construction in my country, the electric energy measurement is based on the digital input quantity of the IEC61850 standard, and the metering device is a digital electric energy meter based on the IEC61850 standard. At present, there are mainly two methods for the verification of digital watt-hour meters, one is based on standard digital power source verification; the other is based on transmission of analog power sources plus standard digital watt-hour meter verification. These two verification methods are basically the same as the current common analog energy meter verification methods. They are all sent out by standard power sources in the laboratory. Sta...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 陈克绪朱亮夏鹏俞林刚
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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