A measuring device for measuring current effective power in a circuit of a transmission system, including an evaluation device and a calibration device, the evaluation device having a connection for measuring current, voltage, and phase shift between the current and the voltage in the circuit, wherein the evaluation device and the calibration device are connected to one another, the evaluation device configured to measure power by evaluating measured current and measured voltage, the calibration device configured to correct the measured current and/or the measured voltage via a cos ( ) value of a measured phase shift between the measured current and the measured voltage and/or via a holding time, the evaluation device configured to calculate a power value with a corrected value of the measured current and/or a corrected value of the measured voltage, and the calibration device configured to make available the calculated power as the current effective power.

A sensor for inductively measuring the current in a conductor flowing through a recess in a printed circuit board. Wire loops on the printed circuit board function as the inductive current sensor. Combined with a voltage measurement, the energy being dissipated in the conductor's load circuit can be determined and transmitted wirelessly. Control circuits can be integrated with the metering hardware to enable the remote modulation of the load's power. The inductive sensor(s) can be used to track differences between the load's supply and return currents. If a fault is detected, the circuit can be broken for safety, serving a ground fault circuit interruption (GFCI) purpose. The claimed invention can report measurements in real time, providing time series data for analyses sufficient to detect or identify an anomaly in the function and operation within a system's load or electrical power distribution network.

Measuring transducer for electric vehicles having at least one tap arranged to tap at least one AC measurement value in an AC charging circuit, a transformer arranged to convert a frequency of the AC measurement value into a standard frequency of an energy supply grid and to output at least one AC measurement value with the standard frequency in an AC measuring circuit, and at least one standard meter arranged in the AC measuring circuit for detecting an electrical power with the AC measurement value at the standard frequency.

A system measures wireless power transfer between a transmitter and a receiver. The system includes a sensor circuit including a sensor. The sensor is configured and positioned to generate sensor data indicative of a field. The field is generated in connection with the wireless power transfer. The system further includes a processor coupled to the sensor circuit and configured to determine a power measurement based on the sensor data. The processor is further configured to determine misalignment of the transmitter or the receiver. The processor is also configured to correct an estimate of the power measurement based on the misalignment.

A method of evaluating an optimization system is disclosed. The system is transitioned from an on state to an off state. Data is collected at time intervals for a time period before and after the system is transitioned from the on state to the off state. The transitioning occurs while a load of a particular type is active. In one embodiment, the optimization system is a Volt/VAR Optimization (VVO) system.

A calibrated measurement of the angular misalignment x of a radiofrequency antenna pointing towards a slow mobile, radio transmitter along an antenna axis, the antenna being in radio communication with the mobile.

Provided is a server (10) including an attribute information receiving unit (15) which receives attribute information of an electric power output apparatus (30) from the electric power output apparatus (30) having a function of outputting electric power; an output condition transmitting unit (18) which transmits an output condition determined in accordance with the attribute information to the electric power output apparatus (30); a processing result receiving unit (16) which receives a processing result obtained by performing predetermined processing on output waveform data at the time when the electric power output apparatus (30) outputs electric power according to the output condition; and an evaluating unit (17) which evaluates an electric power output performance of the electric power output apparatus (30) on the basis of the processing result and the output condition.

A method of evaluating an optimization system is disclosed. The system is transitioned from an on state to an off state. Data is collected at time intervals for a time period before and after the system is transitioned from the on state to the off state. The transitioning occurs while a load of a particular type is active. In one embodiment, the optimization system is a Volt/VAR Optimization (VVO) system.

A power switching device for an electrical power distribution system. The power switching device is configured for supplying an electrical load with power, having switching means and means for protecting the loads. The device includes current measurement means and voltage measurement means delivering current and voltage measurement signals to a driver stage of the device. The device includes processing means that are capable of formulating information relating to the electrical power consumed by the loads on the basis of the voltage and current measurement signals.

A method of evaluating an optimization system is disclosed. The system is transitioned from an on state to an off state. Data is collected at time intervals for a time period before and after the system is transitioned from the on state to the off state. The transitioning occurs while a load of a particular type is active. In one embodiment, the optimization system is a Volt/VAR Optimization (VVO) system.