DEVICE FOR MONITORING CONSUMPTION OF ELECTRICAL ENERGY IN LOW VOLTAGE NETWORK Russian patent published in 2021 - IPC G01R21/133 G01R22/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering. Essence: the device contains a single-crystal microcontroller, which is a central computing device and at the same time an analog-to-digital converter connected to a power source, current sensors made in the form of split-core differential current transformers, voltage sensors made in the form of resistive voltage dividers, an input signal processing device current, which is an electronic device that converts a bipolar sinusoidal current analog signal from current sensors into a unipolar sinusoidal voltage signal connected to the current sensors and a device for calculating the phase shift between current and voltage, a voltage input signal processing device that converts a bipolar sinusoidal analog voltage signal from voltage sensors into a unipolar sinusoidal voltage signal connected to the voltage sensors and a device for calculating the phase shift between current and voltage. A device for processing an input current signal, a device for processing an input voltage signal, a device for calculating the phase shift between current and voltage, a time and clock signal control unit, a unit for determining additional parameters that processes signals from external sensors, a communication unit with a central processing computer are connected to a single-crystal microcontroller. A 5-volt DC power-supply source with a built-in battery and a recharging circuit operating when the device is connected to the network is used as a power source.

EFFECT: provided are ability to measure current and voltage without the need to break the wires of the supply line, ability to work as part of an automated system for monitoring electricity consumption with a single information processing center, as well as ability to work both in single-phase and three-phase networks.

1 cl, 1 dwg