Metering merging unit for error self-monitoring

Abstract

The invention discloses a metering merging unit for error self-monitoring. The unit comprises an ABC three-phase acquisition board card, a self-monitoring management unit and an FPGA module. The self-monitoring management unit is connected with the ABC three-phase acquisition board card, the ABC three-phase acquisition board card is connected with the FPGA module, and the FPGA module is connectedwith the self-monitoring management unit; the ABC three-phase acquisition board card acquires three-phase voltages and three-phase currents, converts the acquired three-phase voltages and three-phasecurrents into three paths of voltage flow data and three paths of current flow data, and sends the three paths of voltage flow data and three paths of current flow data to the FPGA module; the FPGA module reads and converts streaming data into a data signal according to a monitoring instruction of the self-monitoring management unit, and sends the data signal to the self-monitoring management unit; the self-monitoring management unit receives the data signals, compares the data signals with standard data, and calculates error deviation values of the data signals and the standard data.

Description

technical field [0001] The invention relates to the technical field of electric power metering, and more specifically, to a metering merging unit for error self-monitoring. Background technique [0002] The merging unit for metering is an important secondary main equipment in the substation. Measuring inaccuracy will directly affect the fairness of electric energy trade, and even threaten the operation safety of the power grid. In order to obtain the operating error of the merging unit for measurement, the current method is to compare the measurement errors of the merging unit for measurement with the high-level standard in the power outage state. The existing technology not only seriously interferes with the normal operation of the power grid, but also requires a huge amount of manpower, physical resources. [0003] Therefore, there is a need for a technique to realize a merging unit for metering with error self-monitoring. Contents of the invention [0004] The technic...

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Problems solved by technology

[0002] The merging unit for metering is an important secondary main equipment in the substation. Metering inaccuracy will directly affect the fairness of electric energy trade, and even threaten the operation safety of the power grid.

In order to obtain the operating error of the merging unit for measurement, the current method is to compare the measurement errors of the merging unit for measurement with the high-level standard in the power outage state. The existing technology not only seriously interferes with the normal operation of the power grid, but also requires a huge amount of manpower, material resources

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