The present disclosure provides a photovoltaic (PV) disconnect device used in an electrical system. The PV disconnect device includes a relay component electrically coupled to a feed circuit of a backup PV power generation system and a connector port electrically coupled to an energy control system. The PV disconnect device includes a sensor circuit to measure at least one of a voltage, a current, and a current frequency of the feed circuit of the backup PV power generation system. The PV disconnect device includes a controller operatively coupled to the relay component, the sensor circuit, and the connector port. The controller receives and processes the voltage, the current, and the current frequency measurements. The controller selectively actuates the relay component based on the processed voltage, current, and current frequency measurements.

A device for electrically connecting a direct current (DC) microgrid to a DC bus of an electrical power network, which is operating at a higher voltage than the microgrid, comprises a pair of electrical port each configured for connection with either the DC bus or the microgrid; a DC-DC power converter operatively interconnecting the electrical ports for power transmission therebetween from a first voltage at the port connected to the DC bus to a lower second voltage at the port connected to the DC microgrid; a DC circuit breaker connected between the DC-DC power converter and one of the electrical ports for selectively conducting current therebetween; and a controller which is configured to communicate with constituent devices in the DC microgrid as well as a control center representative of the electrical power network in order to exchange information about electrical energy consumption in the DC microgrid and the larger network.

Methods and systems for self-healing fault recovery in an electrical power distribution network, particularly distribution networks employing a mesh configuration. When a power source circuit breaker is tripped one or more virtual paths is traced throughout the mesh network, each virtual path originating at the power source that is offline, terminating at an alternate power source, and containing one or two open load switches. A restoration path is chosen from the virtual paths. Power can be transferred to other segments of the mesh network by isolating the fault and closing the open load switch in the chosen restoration path. Some or all of the method and system can be automated.

A cloud control power socket device includes a housing, a power plug, a first switch device, a second switch device, a socket and a cloud control circuit. The power plug has first and second conductive wires. The first switch device is arranged on the housing. The second switch device is arranged in the housing and has a first end, a second end, and a control end. The socket is connected to the second end of the second switch device and the second conductive wire. The cloud control circuit is connected to the control end of second switch device. The first switch device includes an AC switch; a first indicator having two ends connected to the AC switch and the second conductive wire; and a second indicator having two ends connected to the second conductive wire and the second switch device.

A load control device may be used to control and deliver power to an electrical load. The load control device may comprise a control circuit for controlling the power delivered to the electrical load. The load control device may comprise multiple actuators, where each of the actuators is connected between a terminal of the control circuit and a current regulating device. The number of the actuators may be greater than the number of the terminals. The control circuit may measure signals at the terminals and determine a state configuration for the actuators based on the measured signals. The control circuit may compare the state configuration to a predetermined dataset to detect a ghosting condition.

A switchboard management system according to an embodiment of the present disclosure comprises: at least one gateway connected to at least one from among a plurality of circuit breakers in a switchboard panel; and a server connected to the at least one gateway, wherein the at least one gateway comprises an environment sensing unit for acquiring environment data on the at least one circuit breaker connected thereto, and the server receives, from the at least one gateway, driving information on the plurality of circuit breakers and the environment data and predicts the remaining lifespan of each of the plurality of circuit breakers on the basis of the received driving information and environment data.

A system for controlling the area circuits that stem from a circuit breaker box in a building. A switch activation unit is provided and is wired to the outgoing wires of a circuit breaker box. The switch activation unit contains a switch for each of the area circuits to be controlled. The switches are wired in series between the circuit breakers in the circuit breaker box and the area circuits. A control unit communicates with the switch activation unit and selectively controls the on/off state of its switches. The control unit is programmable and can activate and deactivate different area circuits at different preprogrammed times. The control unit can also be operated remotely using a link to a smart device.

A method of providing power, via a plurality of power control systems, includes forming, by at least two power control systems from among the plurality of power control systems, a power network and defining, by each power control system of the power network, a power allocation schedule for a power cycle using a dynamic load scheduling model. The power allocation schedule identifies one or more designated power control systems from among the at least two of the power control systems to provide power to a load during the power cycle. For at least portion of the power cycle, the method includes providing power to the load by the one or more designated power control systems of the power network based on the power allocation schedule.

Certain embodiments of the present application relate to a variable frequency drive (VFD) cabin for a pump configuration including a mobile trailer on which the VFD cabin is to be mounted. The VFD cabin generally includes a medium-voltage VFD and a ventilation system. In certain embodiments, the ventilation system is configured to generate an overpressure condition within the cabin to discourage the entry of dust and debris into the cabin. In certain embodiments, one or more components of the medium-voltage VFD are coupled to the floor of the cabin via a vibration damping system. In certain embodiments, the VFD cabin may be directly coupled to a chassis of the mobile trailer without an intervening suspension being provided between the VFD cabin and the chassis.

An electric driven hydraulic fracking system is disclosed. A pump configuration that includes the single VFD, the single shaft electric motor, and the single hydraulic pump that is mounted on the single pump trailer. A pump configuration includes a single VFD configuration, the single shaft electric motor, and the single shaft hydraulic pump mounted on the single pump trailer. The single VFD configuration converts the electric power at the power generation voltage level distributed from the power distribution trailer to a VFD voltage level and drives the single shaft electric motor to control the operation of the single shaft electric motor and the single hydraulic pump. The VFD voltage level is a voltage level that is required to drive the single shaft electric motor. The VFD configuration also controls operation of the auxiliary systems based on the electric power at the auxiliary voltage level.