A method for characterizing power quality events in an electrical system includes deriving electrical measurement data for at least one first virtual meter in an electrical system from (a) electrical measurement data from or derived from energy-related signals captured by at least one first IED in the electrical system, and (b) electrical measurement data from or derived from energy-related signals captured by at least one second IED in the electrical system. In embodiments, the at least one first IED is installed at a first metering point in the electrical system, the at least one second IED is installed at a second metering point in the electrical system, and the at least one first virtual meter is derived or located at a third metering point in the electrical system. The derived electrical measurement data may be used to generate or update a dynamic tolerance curve associated with the third metering point.

A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of independent units responsive to a broadcast controller. Each independent unit includes at least one commander and at least one energy controller for controlling at least one of the electrical loads in response to a control signal received from the commander. The independent units are configured and operate independent of each other. The broadcast controller transmits wireless signals to the energy controllers of the independent units. The energy controllers do not respond to control signals received from the commanders of other independent units, but the energy controllers of both independent units respond to the wireless signals transmitted by broadcast controller. The energy controller may operate in different operating modes in response to the wireless signals transmitted by the broadcast controller.

A system for analyzing energy usage measures one or more parameters indicative of energy usage for a plurality of sub-circuits, where the sampling rate for the measuring is substantially continuous, and automatically transmits information related to at least one of the measured parameters at a rate that enables monitoring of current energy usage. The system further detects a significant change in a measured parameter, determines whether the significant change in the measured parameter is caused by a change in energy usage, and automatically transmits information related to the significant change in the measured parameter caused by the change in energy usage after detecting the significant change.

A management method comprises: a step A of transmitting, from a management device to a distributed power supply which operates in a first state in which a reverse power flow from a facility to a power grid is not permitted, a permission message permitting to operate in a second state in which the reverse power flow is permitted; a step B of switching by the distributed power supply, the operation of the first state to the operation of the second state after receiving the permission message; and a step C of switching by the distributed power supply, the operation of the second state to the operation of the first state, even when switching from the operation of the second state to the operation of the first state is not instructed, if a predetermined condition is satisfied.

A power management apparatus comprises: a receiver configured to receive a power control message from an external server; a controller configured to control at least any one of a power flow amount from a power grid to a facility and a reverse power flow amount from the facility to the power grid based on the power control message; and a transmitter configured to transmit a control result of at least any one of the power flow amount and the reverse power flow amount to the external server. The control result includes control amount information indicating a control amount of at least any one of the power flow amount and the reverse power flow amount and identification information for identifying a contributing equipment that contributes to control of at least any one of the power flow amount and the reverse power flow amount.

Provided is a network system. The network system includes: at least one unit selected from an energy receiving unit receiving energy and an energy management unit managing the energy receiving unit. An energy usage amount or energy usage rate of the energy receiving unit is adjusted; an energy usage amount or usage rate when the unit is controlled based on information relating to at least an energy rate is less than that when the unit is controlled without the base of information relating to at least an energy rate; the energy receiving unit comprises a plurality of components; and an operation of one component among the plurality of components is controlled based on the energy rate related information.

An energy supply device comprises an analysis unit for determining a signaling information which indicates a state of operation of the energy supply device, and a communication interface for outputting said signaling information. The analysis unit is designed to detect an operating variable of the energy supply device; to set a characterization parameter; and to characterize the detected operating variable of the energy supply device as a function of the characterization parameter in order to obtain the signaling information.

A device may include a power supply module (PSM). The PSM may receive information regarding one or more programmable restrictions associated with a power supply. The PSM may receive a measurement of voltage associated with the power supply. The PSM may determine a current associated with the power supply based on the one or more programmable restrictions, the measurement of voltage, and a first amount of power associated with the power supply. The PSM may cause a load associated with the power supply to be adjusted based on determining the current without removing power for a connection between the power supply and a power source associated with the power supply. The PSM may cause the power supply to provide a second amount of power based on causing the load associated with the power supply to be adjusted.

In an electrical power outlet device, a processor and a memory are configured to execute an application within the outlet device, which computes a pattern of usage of the outlet device. A set of sensors in the outlet device includes a first sensor that is usable to detect an event in an environment in which the outlet device is supplying power. The environment includes elements that are not participating in an electrical circuit that receives power from the outlet device and the event is usable by the application to alter the pattern of usage. An autonomous modification of an operation of the outlet device is performed in response to the pattern of usage, the event, or both. The operation changes a power supplying state of the outlet device without using an external switching apparatus or an external logic implemented outside the outlet device.

A power converter circuit includes a monitoring module that monitors a DC power source, the monitoring module comprising a microcontroller. The power converter circuit also includes a temperature sensor providing temperature data to the microcontroller. In response to an indication from the temperature data of a failure or a problem, the microcontroller changes a parameter of the power converter circuit.