Unconventional low-voltage power grid electric energy metering device operation characteristic simulation testing device

Abstract

The present invention discloses an unconventional low-voltage power grid electric energy metering device operation characteristic simulation testing device. Each phase voltage power amplifier and each current power amplifier are employed to receive small voltage signals output by a program controlled signal source and expressing each phase test voltage waveform and each phase test current waveform and perform amplification of the corresponding voltage, the corresponding current and the power; and a range switching mechanism performs range regulation and output of the output voltage or current signals of each phase voltage power amplifier and each phase current power amplifier. The unconventional low-voltage power grid electric energy metering device operation characteristic simulation testing device employs three modes of waveform customizing, field wave recording input and power grid modeling to generate test voltage and test current waveforms and construct the operation simulation environment of an unconventional low-voltage power grid. The demands of the metering characteristic verification of a conventional electric energy metering device under various voltage and current waveform conditions are greatly satisfied.

Description

Technical field [0001] The invention belongs to the technical field of electrical energy metering equipment testing, and in particular relates to a simulation test device for operating characteristics of unconventional low-voltage power grid electrical energy metering equipment. Background technique [0002] The use of a large number of power electronic nonlinear loads and the access of distributed new energy sources make the operating status of modern low-voltage power grids very different from those of traditional conventional power grids. Conventional energy metering equipment can operate under unconventional and complex grid operating environments. The problem of measurement accuracy has become the focus of great attention of power supply companies and the majority of users in society. However, the current laboratory electric energy metering equipment calibration device usually sets the operating test environment and test functions according to the operating state of the conv...

AI Technical Summary

Problems solved by technology

However, at present, the calibration device of electric energy metering equipment in the laboratory usually sets the operation test environment and test function for the operation state of the conventional power grid, so it cannot meet the requirements of reproducing the operation environment of the complex power grid and realizing various test functions in this environment

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