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.

The present disclosure relates to a hierarchical type power control system. The hierarchical type power control system connected to a cloud server includes: a first microgrid cell including a first energy storage system (ESS) having an uninterruptible power supply (UPS) structure and a first load that a power state thereof is managed by the first ESS; a second microgrid cell including a second load and a second ESS managing a power state of the second load; a third microgrid cell including a third load; a middleware server communicating with the first to third microgrid servers; and an integrated control system communicating the middleware server and integrally controlling power supply states of the first to third microgrid cells, wherein the first microgrid cell and the second microgrid cell are connected to each other through a converter to interchange power therebetween.

A system and method for determining a reliability line rating for a transmission line is disclosed. In response to a line clearance measurement and a line temperature measurement received from a transmission line monitor coupled to a transmission line, the system generates a temperature-clearance model for the transmission line based on the received line clearance measurement and line temperature measurement. The system generates a plurality of past dynamic line ratings and determines a scaling factor based on the plurality of past dynamic line ratings. The system then generates a dynamic line rating for an interval of time in the future and scales the dynamic line rating in response to the scaling factor to obtain a reliability line rating for the interval.

Systems and methods dynamically assess energy efficiency by obtaining a minimum energy consumption of a system, receiving in a substantially continuous way a measurement of actual energy consumption of the system, and comparing the minimum energy consumption to the measurement of actual energy consumption to calculate a substantially continuous energy performance assessment. The system further provides at least one of a theoretical minimum energy consumption based at least in part on theoretical performance limits of system components, an achievable minimum energy consumption based at least in part on specifications for high energy efficient equivalents of the system components, and the designed minimum energy consumption based at least in part on specifications for the system components.

Distributed series reactance modules and active impedance injection modules that are adapted to operating with electric power transmission lines over a wide range of transmission voltages are disclosed. Key elements include a virtual ground, an enclosure that acts as a Faraday shield, radio frequency or microwave control methods and the use of corona rings.

Distributed static synchronous series compensators (DSSSCs) which may also be designated tower routers capable of injecting series inductive or capacitive impedances to enable distributed power-flow control. When a large number of these (a fleet of) DSSSCs are distributed over the grid for power-flow control, it is necessary to ensure that coordinated communication and control capabilities are also established, enabling fast reaction to changes that can exist across the grid. A system architecture and method for enabling localized high-speed low-latency intelligent control with communications between subsections (local network) of the grid along with communication to the central Grid operations center at the utility for supervisory control is disclosed herein. The architecture provides sub-cyclic (< 1/60 of a second) response capability, using the local DSSSCs with high-speed communication at the local network level to power-system disturbances, such as power-oscillation damping (POD), sub-synchronous resonance (SSR) etc.

An apparatus for installation with an electrical distribution box comprising a bus bar and a plurality of circuit breakers, the apparatus comprises a sensor circuit comprising at least one sensor arranged in series connection with the bus bar and one of the plurality of circuit breakers, wherein one end of the at least one sensor is connected to the bus bar and another end of the at least one sensor is connected to one of the plurality of circuit breakers; and a processor to obtain a corresponding voltage signal and a corresponding current signal flowing through the at least one sensor.

A power control arrangement for an aircraft galley including a power control unit and an interface unit. A power input of the power control unit includes a main switch and connects to a power feed. Each of a power outlets of the power control unit includes an outlet switch and connects to a galley insert. A main switch interface on the interface unit is provided for switching of the main switch. Each outlet switch interface of the interface unit is associated with one of the outlet switches for switching the outlet switch. The interface unit is arranged remote from the power control unit and the switch interfaces are connected to the corresponding switch via an electrical, radio or optical connection for controlling switching of the switches. Further, an aircraft galley and an aircraft are disclosed.

Distributed static synchronous series compensators (DSSSCs) which may also be designated tower routers capable of injecting series inductive or capacitive impedances to enable distributed power-flow control. When a large number of these (a fleet of) DSSSCs are distributed over the grid for power-flow control, it is necessary to ensure that coordinated communication and control capabilities are also established, enabling fast reaction to changes that can exist across the grid. A system architecture and method for enabling localized high-speed low-latency intelligent control with communications between subsections (local network) of the grid along with communication to the central Grid operations center at the utility for supervisory control is disclosed herein. The architecture provides sub-cyclic (< 1/60 of a second) response capability, using the local DSSSCs with high-speed communication at the local network level to power-system disturbances, such as power-oscillation damping (POD), sub-synchronous resonance (SSR) etc.

A method for configuring a load shedding controller adapted to control a micro-grid. The method comprises: providing a graphic user interface on a computer display, the graphic user interface including graphic resources activatable by a user; providing first graphic resources on the graphic user interface to assist a user in selecting a load shedding procedure to be executed by the load shedding controller, when the micro-grid is disconnected from the main grid; providing second graphic resources on the graphic user interface to assist a user in listing the electric loads included in the micro-grid; providing third graphic resources on the graphic user interface to assist a user in providing first configuration values to configure grid operating parameters processed during the execution of the selected load shedding procedure by the load shedding controller; providing fourth graphic resources on the graphic user interface to assist a user in providing second configuration values to configure load operating parameters processed during the execution of the selected load shedding procedure by the load shedding controller; checking whether the load shedding controller meets minimum operating requirements to operate; if the load shedding controller meets the minimum operating requirements, transmitting configuration information including at least the first and second configuration values to the load shedding controller.