Provided is a missing data correction method and apparatus, and more particularly, a missing data correction method that estimates missing power and energy from an electricity meter in consideration of a case in which power data and energy data collected from the electricity meter are missing and generates continuous power data according to the estimated power and energy.

An electric utility distribution system in which power is supplied by a distribution transformer through an electric utility meter including an apparatus for detecting the presence of a back-feed voltage source connected to the load. The apparatus includes a virtual neutral established in the electric utility meter at ground potential and a remote switch that is opened to interrupt electric power flow from the distribution transformer to the load. The apparatus further includes a balanced voltage divider circuit including a connection point established between a pair of series connected resistive elements. In addition, the apparatus includes a detection circuit configured to monitor a voltage signal at the connection point to detect a back-feed voltage source connected between a neutral conductor of the electric utility distribution system and one of a first or second power line at the load.

A system and method for monitoring energy use in an electronic device. In one embodiment, an energy monitoring system includes a processor and an energy monitor module. The energy monitor module includes instructions that when executed cause the processor to receive values of measured parameters of a pulse signal that controls the switching of energy to an energy storage device in a switch mode power supply that provides power to an electronic device. The instructions also cause the processor to determine, based on the values of measured parameters, attributes of operation of the electronic device powered by the energy source during an interval corresponding to the measured parameters. The instructions further cause the processor to generate, based on the attributes of operation, a control signal that causes the electronic device to change the loading of the power supply by the electronic device.

A utility meter includes a consumption measurement unit for generating consumption data, a meter processor, and a RTC for time stamping the consumption data to provide interval meter data during interval meter operation. A memory stores the interval meter data. The meter processor implements/initiates responsive to a power loss that suspends RTC operation, switching from interval to relative time operation where consumption data is stored as relative consumption data together with a relative time as relative meter data. Responsive power restoration and receiving a current time, the meter switches from relative time to interval meter operation. The restoration time is calculated using the current and an elapsed time since the restoration. The time of restoration and current time is used to generate calculated times. The consumption data from relative time operation is time stamped with the calculated times to provide time-corrected relative meter data that is stored to the memory.

A utility meter includes a consumption measurement unit for generating consumption data, a meter processor, and a RTC for time stamping the consumption data to provide interval meter data during interval meter operation. A memory stores the interval meter data. The meter processor implements/initiates responsive to a power loss that suspends RTC operation, switching from interval to relative time operation where consumption data is stored as relative consumption data together with a relative time as relative meter data. Responsive power restoration and receiving a current time, the meter switches from relative time to interval meter operation. The restoration time is calculated using the current and an elapsed time since the restoration. The time of restoration and current time is used to generate calculated times. The consumption data from relative time operation is time stamped with the calculated times to provide time-corrected relative meter data that is stored to the memory.

A power meter includes a plurality of first terminals for receiving a measure of current and a plurality of second terminals for receiving a measure of voltage of each of one or more phases of power that is delivered to the load. A controller is configured to determine a number of power monitor parameters based on the measure of current of each of one or more phases of power that is delivered to the load and/or the measure of voltage of each of one or more phases of power that is delivered to the load. The power meter includes an I/O interface for communicating one or more of the power monitor parameters over a network using a configurable mapping that maps the power monitor parameters with corresponding addressable locations.

A power meter includes a plurality of first terminals for receiving a measure of current and a plurality of second terminals for receiving a measure of voltage of each of one or more phases of power that is delivered to the load. A controller is configured to determine a number of power monitor parameters based on the measure of current of each of one or more phases of power that is delivered to the load and/or the measure of voltage of each of one or more phases of power that is delivered to the load. The power meter includes an I/O interface for communicating one or more of the power monitor parameters over a network using a configurable mapping that maps the power monitor parameters with corresponding addressable locations.

An adjusting power measuring apparatus includes: a processor that: acquires an active power measurement value of active power exchanged at a connection point between a targeted power grid and an adjusting power supply source that supplies adjusting power to the targeted power grid, acquires a frequency measurement value of frequency at the connection point, calculates, based on the active power measurement value and the frequency measurement value, a first adjusting power coefficient indicating a degree of influence that fluctuation in the active power has on fluctuation in the frequency, calculates, based on the first adjusting power coefficient and a fluctuation measurement value of the fluctuation in the frequency, the adjusting power supplied from the adjusting power supply source to the targeted power grid, and determines, based on the calculated adjusting power, compensation to be paid to an owner of the adjusting power supply source.

An adjusting power measuring apparatus includes: a processor that: acquires an active power measurement value of active power exchanged at a connection point between a targeted power grid and an adjusting power supply source that supplies adjusting power to the targeted power grid, acquires a frequency measurement value of frequency at the connection point, calculates, based on the active power measurement value and the frequency measurement value, a first adjusting power coefficient indicating a degree of influence that fluctuation in the active power has on fluctuation in the frequency, calculates, based on the first adjusting power coefficient and a fluctuation measurement value of the fluctuation in the frequency, the adjusting power supplied from the adjusting power supply source to the targeted power grid, and determines, based on the calculated adjusting power, compensation to be paid to an owner of the adjusting power supply source.

Methods and systems for controlling power supplied to a plurality of appliances on a power line. Poly phase power measurements are collected from the power line by a dedicated energy metering chip are sampled at frequencies in the range of 0 kilo samples per second to 32 kilo samples per second and converted to digital power measurements. The digital power measurements are received by a real-time microcontroller. The poly phase power measurements are analyzed in real time, the poly phase power measurements are disaggregated, and a power report regarding a power usage of each appliance is generated by a computer processing unit, CPU. A power report is transmitted to a mobile application, power on/off commands for each appliance are received from the mobile application, and each appliance is powered on/off based on the power on/off commands.