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 communication apparatus comprises a first communication unit configured to receive, from an external server, an output suppression message instructing output suppression of a dispersed power source; and a second communication unit configured to perform communication of a predetermined message having a predetermined format with a power management apparatus that manages power of an equipment installed in a consumer's facility. The output suppression of the dispersed power source is performed in accordance with the output suppression message by a conversion apparatus that converts DC power output from the dispersed power source to AC power. The predetermined format includes an information element capable of storing at least one of first information and second information, the first information being related to a communication status with the conversion apparatus, the second information being related to an acquisition status of the output suppression message. The second communication unit is configured to transmit, to the power management apparatus, the predetermined message including at least one of the first information and the second information as an information element.

This disclosure relates to systems and methods for verification of time sources. In various embodiments, one or more secondary time sources may be used to verify the accuracy of a primary time source prior to relying on a time signal created by the primary time source. In one embodiment, a first interface is configured to receive the primary time signal from a primary time source, and a second interface in communication with a secondary time source is configured to receive a secondary time signal. A time assessment subsystem is configured to determine an occurrence of a verification criteria. Upon the occurrence of the verification criteria, the system may compare the primary time signal and the secondary time signal to determine whether that the primary time signal is consistent with the secondary time signal. If the signal is consistent, the primary time source may be utilized by the system.

Systems and methods for the creation of a centrally controlled DC and AC power rail system within a structure. The rails utilize a centralized controller along with a plurality of distributed controllers to allow for power in the rails to be selectively distributed or not distributed to outlets attached to the rails. This allows for power to be distributed without the need for users to utilize hardwired switches, but to instead utilize generally wireless switch modules, which may be implemented in hardware and/or software to control the outlets. It also allows for devices designed to utilize DC power to be directly supplied with such power from the DC power rail without the need to include onboard AC-DC converters with each device.

A system includes a control unit having a processor and a communication interface. The communication interface is configured to communicate with one or more charging stations that are electrically coupled to receive electrical power from a power distribution grid and that are configured to selectively charge one or more energy storage devices connected to the charging stations. The processor is configured to generate first control signals for communication by the communication interface to the one or more charging stations to control transfer of reactive and/or active power from the charging stations to the power distribution grid. The control signals are generated based at least in part on a load cycle profile of one or more electric machines electrically coupled to the power distribution grid.

An energy management device according to an embodiment of the present invention comprises: a communication unit for receiving energy information of a system to which the energy management device belongs; a display unit for displaying any one energy information icon on the basis of the received energy information; and a control unit for displaying at least one energy information icon corresponding to a lower level of the energy information icon upon receiving a command to select an expansion icon corresponding to the energy information icon, and connecting the energy information icon having the selected expansion icon and the energy information icon corresponding to the lower level to energy nodes having different thickness according to the amount of energy.

A method for monitoring and controlling devices at a work site includes storing sensor data collected during operation of a work site device in a memory of the work site device. The charging station hub device transmits operational characteristics request to the work site device. The work site device determines operational characteristics of the work site device based on the sensor data stored in the memory of the work site device. The work site device transmits the operational characteristics of the work site device to the charging station hub device via the established connection supported by the work site device and the charging station hub device. The charging station hub transmits the operational characteristics to a mobile user device via the network.

A sensor data fusion system includes a processor coupled to a plurality of sensors. The system is initialized by providing access to a data store storing at least one time series of sensor data; a semantic store storing semantic data including system variables, and relations between the system variables; and a mapping therebetween. A registration of a set of one or more variables of interest for which appropriate data is not available is obtained. An initially empty inference model is extended with the set of variables, to obtain an extended model. A request to observe a given one of the set of variables at a given timestamp is obtained. Responsive thereto, time series data for the set of registered variables is retrieved. The extended model is run with the retrieved data to obtain an estimate of the given one of the variables at the given timestamp.

An underwater data center system includes a data center positioned in a water environment and powered by one or more sustainable energy sources. An energy storage chemical is generated. One or more processors are coupled to the data center or included in the data center. A controller is coupled to the one or more processors. A housing member houses the one or more processors under water. The underwater data center is coupled to a sustainable energy source that provides energy to the underwater data center. One or more cables are coupled to the one or more processors or the sustainable energy source.

Methods and systems for servicing distributed generators are provided herein. For example, a system for servicing distributed generators comprises a distributed generator comprising a plurality of components, a controller communicatively connected to the plurality of components, and an unmanned aerial vehicle communicatively coupled to at least one of the plurality of components or the controller for at least one of transmitting and receiving data relating to the plurality of components.