Certain aspects and features include a system and method for energy measurement in electric meter systems. In an example, an electric meter receives an Alternating Current (A/C) signal. The electric meter includes a current measurement device that is configured to obtain a current measurement of a current of the A/C signal. The current measurement includes a fundamental frequency component and a noise component. The electric meter receives a current measurement signal from the current measurement device and filters the noise component from the current measurement, thereby creating a filtered current measurement signal. When the filtered current measurement signal is greater than a starting current threshold, the electric meter calculates an energy consumption measurement.

Various embodiments disclosed herein provide techniques for detecting hot socket conditions in an electrical system. A hot socket application executing on a utility electricity meter acquires, via a power line communications (PLC) modem, first signal readings associated with a utility electricity meter. The hot socket application acquires, via a radio frequency (RF) transceiver, second signal readings associated with the utility electricity meter. The hot socket application performs one or more operations on the first signal readings and the second signal readings to determine whether a hot socket condition is present. The hot socket application performs a remedial operation in response to determining that the one or operations indicate that the hot socket condition is present.

A method of monitoring a functional state of an electricity meter, includes generating at least one temperature signal from which an actual temperature value of the electricity meter can be derived; determining whether the actual temperature value and/or a gradient thereof exceeds at least one threshold value derived from at least one predefined temperature curve representing predefined temperature values of the electricity meter over time according to a modelled thermal behaviour of the electricity meter. Further, a computer program, a computer-readable data carrier having stored thereon a computer program, a data carrier signal carrying a computer program, and an electricity meter configured to carry out the computer program are described. Finally, an electricity metering system, in particular an Advanced Metering Infrastructure, includes at least one electricity meter and/or at least one administration device configured to carry out a method of monitoring a functional state of an electricity meter.

An electrical meter including a housing including a socket interface operable to connect to a facility. The meter further including a sensor configured to sense a characteristic of the electrical meter. The meter further including a controller having an electronic processor and a memory. The electronic processor is configured to receive, from the sensor, a signal indicative of the electrical characteristic, determine, based on the signal, presence of a hot socket, and output an alert based on determining presence of the hot socket.

A power monitoring device (PMD) can perform real-time remote managing, status reporting and analysis on the health/condition of equipment connected to the PMD. For example, a PMD provides data such as whether the equipment connected is idling, fully operating, malfunctioning, etc. The PMD can turn the power on/off, trigger system alert, and perform time-delayed or special profile programming to manage and monitor equipment usage. A power signature identification capability can identify what equipment such as monitor, laptop, lighting equipment, etc., are being connected. A configuration can be used by the power management device based at least in part on the waveform information (e.g., device model, activity status, etc.). Real-time diagnosis and collection of energy consumption and usage pattern can be aggregated for planning and management. Asset management can be enabled by discovering which models of devices are active and connected to a predetermined power management device.

A method for the onsite calibration of a Rogowski sensor to be calibrated, includes the steps of: cause the sensor to be calibrated to be positioned on a reference phase, or cause a reference sensor to be positioned on the phase to be calibrated; acquiring a calibration current measurement produced by the sensor to be calibrated, a reference current measurement produced by the reference sensor, and a reference voltage measurement on the phase on which are positioned the reference sensor to be calibrated following the positioning step; and using the calibration current measurement, the reference current measurement and the reference voltage measurement to produce calibration parameters of the sensor to be calibrated.

A wireless power transfer system and devices that are configured to perform techniques to detect a single fault in primary processing circuitry by using second, independent processing circuitry. The techniques may include calculating and verifying an integrated output power dose. Verifying the integrated output power dose may include, for example, secondary processing circuitry calculating the integral of power delivered over a predetermined time duration and compares the calculated integral to an expected integral dose curve stored at a memory location accessible by the secondary processing circuitry. The detection techniques may also include determining a maximum output power profile. The secondary processing circuitry may receive a commanded output power target from the primary processing circuitry and compare the commanded output power to the maximum allowed output power vs. time.

A method and a device for acquiring a charging electricity amount, and an electronic device are provided. When a controller determines based on at least operation state information of an external electric meter that the external electric meter is in a fault state, the first amount of electricity, outputted by the charging pile when the external electric meter is in the fault state, can be calculated based on at least first electric energy output data of the charging pile acquired by the charging module of the charging pile when the external electric meter is in the fault state. That is, the amount of electricity consumed by the charging pile can be calculated even when the external electric meter is in the fault state, so that the controller calculates the cost based on the amount of electricity consumed by the charging pile.

Provided is a sensor in which a current sensor that detects a current of a power line as a change in a magnetic field and a voltage sensor that detects a voltage of the power line using capacitive coupling are integrally formed. The transmission of signals related to substantially the same sections is omitted in order to effectively compress an output signal from the sensor and an output signal from the voltage sensor. When the amplitude and phase of a fundamental wave which are estimated from the output signal from the sensor and the amplitude and phase of harmonics are encoded, the amplitude and phase of the harmonics are relativized with a value for the fundamental wave.

An electric meter includes a meter shell configured to be within an outer utility box. A meter socket and blades are for coupling to openings of the socket. The openings include utility-side and premises-side openings for the blades to extend into. A meter processor is coupled to measurement circuitry, and to a communications unit including a transceiver. A gas sensor is positioned proximate to the blades for sensing ≥1 gaseous compound product resulting from an arc discharge across air involving the blades. During operation of the electric meter, responsive sensing a presence of the gaseous compound product, the gas sensor generates an output signal. Responsive to the output signal being above a predetermined threshold level, the electric meter triggers an alert signal that is transmitted to an advanced metering infrastructure (AMI) which indicates an identity of the electric meter and that the electric meter had experienced the arc discharge.