A device for monitoring an interruption unit in an electrical energy supply network. In order to reduce the cost incurred by a network operator in detecting and localizing tripped interruption units, the device has a sensor interface for connecting a sensor unit that records a measured value specific to the interruption unit. An evaluation unit is connected to the sensor interface and configured to detect a current change in terms of the current flowing through the interruption unit on the basis of the measured value. A communication interface is connected to the evaluation unit. In the event of a detected current change, a status signal indicating a critical status of the interruption unit is transmittable to a communication unit. We also describe a method for monitoring an interruption device, and a distribution station with a device for monitoring an interruption device.

A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable of modifying the resonant frequency of the tank circuit, the inverter frequency, the inverter duty cycle or the rail voltage of the DC power source.

A system includes a plurality of elements that are to operate in a radio frequency (RF) environment. The system further includes a plurality of switching devices to operate in the RF environment, each of the plurality of switching devices to control power to at least one of the plurality of elements, wherein the plurality of switching devices are coupled to a power line that is to provide power from outside the RF environment. A filter is coupled to the power line to filter out RF noise introduced into the power line by the RF environment. The system further includes a converter, coupled to the one or more switching devices, to operate in the RF environment and to provide a non-conductive communication link between the one or more switching devices and a controller outside of the RF environment.

A semidefinite (SDR) programming formulation for state estimation (SE) of nonlinear AC power systems is described. The techniques make use of convex semidefinite relaxation of the original problem to render the process efficiently solvable. In addition, robust techniques are described that are resilient to outlying measurements and/or adversarial cyber-attacks. Further, techniques for SDR-based SE are described in which local control areas solve the centralized SDP-based SE problem in a distributed fashion.

An apparatus and method for continuously monitoring substation disconnects and transmission line switches to detect improper closing of the disconnects or switches is disclosed. The method includes the step of providing an apparatus adapted to measure, process, and transmit data associated with a disconnect or switch. The method further includes the steps of positioning the apparatus on or in close proximity to the disconnect or switch, using the apparatus to collect data of the disconnect or switch and processing the data for transmission to a remote receiver, and transmitting the processed data to a remote receiver.

A system for identification of loads in a residential branch of electrical circuit including a plurality of electrical outlets is provided. It comprises a residential power distribution panel comprising an electronic circuit breaker. The electronic circuit breaker may experience unwanted tripping in the residential branch of electrical circuit. The system further comprises a residential fault diagnostics tool connected to the residential branch of electrical circuit. It can record, store, experience electrical conditions which are also experienced by the electronic circuit breaker. The system further comprises a communicating device to display relevant diagnostics information for an end user. The mobile device is configured to be in wireless communication with the residential fault diagnostics tool. The mobile application (APP) includes a classification analyzer for the identification of the loads. A decision of the identification is provided on the mobile application (APP).

This invention provides an energy storage device manager, a system comprising the energy storage device manager, computer-readable media configured for providing the energy storage device manager, and methods of using the energy storage device manager. The energy storage device manager can optionally control charge buses and/or load buses to modulate the state of charge of an energy storage device. The energy storage device manager can optionally be configured with a plurality of modes that target different states of charge. The plurality of modes can optionally comprise a maintain mode which targets a nominal (e.g. 50%) charge state and a high-charge mode that targets a state of charge greater than the maintain mode. The plurality of modes can optionally further include an in-use mode which targets a state of charge greater than the maintain mode, and turns on a load bus that is turned off in the preparation mode. The energy storage device manager can optionally be configured to determine a charge start time to execute the preparation mode. The energy storage device manager can optionally be configured to determine the charge start time based on forecast data (e.g. power prediction forecast determined based on weather forecast).

A method for controlling an energy storage system (ESS) and devices performing the method are disclosed. A method for controlling an ESS according to example embodiments, the method includes an operation of analyzing energy information of an area for which a peak power load is to be calculated received from a plurality of clients included in the area, an operation of generating, based on an analysis result, scheduling control information for controlling the ESS connected to the plurality of clients on a daily basis, an operation of determining, based on the scheduling control information, whether to generate real-time control information for controlling the ESS on a basis of a predetermined control time period, and an operation of correcting, based on the real-time control information, the scheduling control information.

A battery-powered node includes a primary cell, a secondary cell, and a battery controller. The battery controller includes a current source that draws power from the primary cell to charge the secondary cell. The battery-powered node draws power from the secondary cell across a wide range of current levels. When the voltage of the secondary cell drops beneath a minimum voltage level, the current source charges the secondary cell at a constant current level and a charging signal is sent to the battery-powered node. When the voltage of the second cell exceeds a maximum voltage level, the current source stops charging the secondary cell and the charging signal is terminated. The battery-powered node records the amount of time the charging signal is active, which can be used to determine a battery depletion level for the primary cell. Battery replacement may then be efficiently scheduled based on the depletion level.

An electrical management system that is configured to measure electrical load demand at a minimum of two points wherein the invention permit, inhibits, or modulates operation of high amperage devices based on the instant load capacity at the main service entrance, sub-feed distribution points, and the multi-family dwelling breaker panel. Included is a first energy management component that is typically installed within a main electrical room. The first energy management component measures the load demand at the main service entrance in the electrical room and includes a communication transceiver or protocol. The transceiver is communicably coupled to a second transceiver wherein the second transceiver is operably coupled to a second energy management component. The second energy management component measures load demand at an individual unit level and communicates with the first energy management component via second transceiver. An electric vehicle charger is operably coupled to the second energy management component.