Intelligent network multifunction full-electronic electric meter of preventing fraudulent use of electricity

Abstract

The electrical energy meter comprises following modules: the switching module for sampling voltages and currents in electrical network, the module for detecting open/short circuit of the current transformer, the module for measuring electrical energy, the harmonic analysis module, the amplitude analysis module, the phase analysis module, the judgement module of intelligent fault analysis, the data recording module, the stats display module, the data communication module, the clock module, the power source module and the parameter setting module. The invention realizes the integrated functions of measuring electrical energy, the network data transmission and the network communication basically. It is the all-electric type energy meter with various usages.

Description

Technical field [0001] The invention belongs to an electric energy metering device in an electric power system, in particular to an intelligent networked anti-electricity theft multi-functional all-electronic electric energy meter. Background technique [0002] Electric energy metering methods in the prior art generally use several types of electric energy meters such as induction type, electronic type, and multifunctional all-electronic type. Inductive energy meters and electronic energy meters generally only have the functions of active energy metering and reactive energy metering; multifunctional full electronic energy meters not only have the functions of inductive energy meters and electronic energy meters, but also have multi-rate metering, Forward and reverse active and reactive power metering, power grid parameter measurement, power statistics, standard serial communication and pulse output, and partial fault or wrong wiring monitoring functions. [0003] The energy...

AI Technical Summary

Problems solved by technology

The electric energy meter can effectively solve the defect of single measurement and detection function in the existing electric energy meter, and can realize multiple functions such as multi-functional electric energy measurement, grid harmonic detection, power quality detection, etc.

[0007] Another object of the present invention is to provide an intelligent networked anti-stealing multifunctional all-electronic electric energy meter, which can effectively solve the problem of low intelligence, poor adaptability, and inability to detect electric energy metering faults in existing electric energy meters. Accurately and completely detect and record the abnormal operation status and the type and mode of the fault in the electric energy metering, and can detect the level of the grid voltage, the magnitude of the current, the phase sequence and phase of the voltage and current, the wiring error, the power consumption before the meter, etc. status; and can accurately judge whether the electric energy metering is under voltage, shunt, reverse phase sequence, wrong phase, etc. according to the detection results; it can intelligently detect and judge whether the current transformer is short-circuited or open-circuited under various operating modes of the high-voltage and low-voltage power distribution network ;Record and display the start and end time and phase difference of all faults

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