Research on Electromagnetic Field Monitoring of Smart Energy Meter
To detect the electromagnetic environment in which the smart energy meter is in real time,and to achieve the goal that the smart energy meter can forensically solidify the attack event when it is subjected to a high-power electromagnetic attack,an electromagnetic field monitoring module is designed.The module consists of envelope detector,hysteresis comparator and voltage regulator.The envelope detector is used to convert high-frequency electromagnetic wave into direct current voltage output.The hysteresis comparator is used to better control the signal.The voltage regulator is used to provide a stable input voltage to the envelope detector and hysteresis comparator.The module test results show that the output voltage of the module increases with the increase of the external electromagnetic field emission intensity.The module is embedded into the smart energy meter to evaluate the electromagnetic field strength of the environment that the smart energy meter is exposed to.This research can provide theoretical basis and technical support for smart energy meters to prevent electricity theft by strong external electromagnetic fields.
Smart energy meterElectromagnetic fieldElectromagnetic field monitoringElectromagnetic inductionCapacitive couplingInductive couplingElectromagnetic interferenceElectricity theft
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