A first switching unit switches a first power grid from an isolated operation to a grid-connected operation. In switching the first power grid from the isolated operation to the grid-connected operation, the first switching unit determines a master and a slave among a plurality of power adjustment resources and allows the first power grid to be connected to the second power grid after master-slave control by means of the master and the slave such that electric power of the first power grid is in synchronization with electric power of the second power grid. The first switching unit preferentially selects as the master, a power adjustment resource close to a point of connection between the first power grid and the second power grid from among the plurality of power adjustment resources.

Power systems, such as transmission systems, may comprise a series capacitor bank (SCB) to provide series compensation on a power line. The SCB may be electrically inserted into the power line or bypassed according to commands sent by remote systems. Such commands may be compromised in a cyberattack to cause deteriorated conditions and instability in the power system. Thus, according to an embodiment, a protection layer is provided in an SCB station to intercept commands prior to execution, assess the consistency of the commands with a physical state of the power system, and either allow or block the commands based on the assessment, to thereby protect the SCB from cyberattacks.

A power supply system for galvanically isolating an input voltage, which is present on an input side of the power supply system and which is hazardous when touched, from a touchable output voltage, which is to be provided on an output side of the power supply system, and to provide a constant output voltage on the output side, the power supply system including: at least two individual components, at least one individual component of the at least two individual components providing electrical energy, and a predetermined plurality of operating parameters for each individual component of the at least two individual components being monitorable by a sensor unit or a plurality of sensor units; and a monitoring unit in which: at least one operating parameter of the plurality of operating parameters of each individual component is comparable to a stored corresponding reference operating parameter.

A controllable electrical outlet may comprise a resonant loop antenna. The resonant loop antenna may comprise a feed loop electrically coupled to a radio-frequency (RF) communication circuit and a main loop magnetically coupled to the feed loop. The controllable electrical outlet may comprise one or more electrical receptacles configured to receive a plug of a plug-in electrical load and may be configured to control power delivered to the plug-in electrical load in response to an RF signal received via the RF communication circuit. The RF performance of the controllable electrical outlet may be substantially immune to devices plugged into the receptacles (e.g., plugs, power supplies, etc.) due to the operation of the resonant loop antenna. For example, degradation of the RF performance of the controllable electrical outlet may be less when the controllable electrical outlet includes the resonant loop antenna rather than other types of antennas.

A power management system includes a plurality of power adjustment resources electrically connected to a microgrid. The plurality of power adjustment resources include a plurality of EVSEs, each of EVSEs including a parking space. When any one of a plurality of power feeding vehicles is parked in the parking space, an EVSE enables power feeding from a vehicle parked in the parking space to the microgrid. A CEMS server manages the parking space. When a balance of power supply and demand in the microgrid is in an overdemand state, the CEMS server allocates the parking space to a power feeding vehicle that responds to a request for power feeding to the microgrid, of the plurality of power feeding vehicles.

Intelligent impedance injection modules (IIM)s are currently being used for line balancing and overcoming local disturbances on High Voltage (HV) transmission lines of an HV power grid. These distributed IIMs are connected and/or coupled to the HV transmission lines and operate with a pseudo ground at the voltage of the HV transmission line. In order to operate effectively, the IIMs need to communicate with other distributed IIMs across the three phases of the HV grid and also communicate with local intelligent centers LINCs that connect to and synchronize operations across each group of the distributed IIMs in a local region of the HV power grid. Systems and methods are presented for effective and secure sub-cyclic speed communication to and from the distributed IIMs, distributed IIMs to LINCs and substations to enable coordinated actions. Further the distributed IIMs and LINCs receive GPS signals and use the GPS clock for synchronizing operations.

Audio tones are detected by a device. An identifier of a user is extracted from the audio tones. The identifier of the user and status information associated with the device are transmitted to a remote server. The device is configured based on a rule received from the remote server, wherein the rule is based on times series data received from the device and indicative of usage of the device by the user.

Systems and methods are disclosed for automated power plant unit trip prediction and control. Power plant controls may have limited time to manage the plant loads when one of the units trips unexpectedly. To mitigate any consequences on a power grid associated with a trip event, these systems and methods may allow for prediction of such trip events. The predictions may allow a signal to be provided to a controller in sufficient time for the controller to automatically take any necessary action to mitigate any impacts of the future trip event.

A method of operating a computer device includes obtaining measurements of one or more conditions of a power grid component associated with the computer device. The computer device forecasts a future state of the one or more conditions of the power grid component associated with the computer device. The computer device communicates with other computer devices associated with other power grid components to negotiate a behavior of the power grid component associated with the computer device using the forecast.

A device, system, and a computer-implemented method a for identifying an anomaly in an operation of a device includes comparing, by an electrical power analyzer, a current power draw signature of the device with a known power draw signature of the device. There is a determining as to whether at least one anomaly is present in the current power draw signature. A warning is generated in response to determining the at least one anomaly is present in the current power draw signature.