Abstract: A first calculating unit calculates a load current of each distribution facility based on a sending voltage in a power source facility and load information on power consumption facilities in an electrical circuit including the power source facility, the distribution facilities, and the power consumption facilities connected to one another to form the electrical circuit. A second calculating unit calculates the amount of power loss in each distribution facility based on the calculated load current of each distribution facility.

Abstract: Disclosed is an electronic device including a battery, a display, a processor electrically connected with the battery and the display, and a memory which is electrically connected with the processor and stores at least one application, wherein the memory stores instructions which, when executed, cause the processor to monitor power consumption of the at least one application during execution of the at least one application in an off state of the display, and to display, on the display, information indicating whether a value of the power consumption exceeds a threshold selected during a selected time, based on at least a part of a result of the monitoring immediately after the display enters an on state.

Abstract: A storage system and method for handling overheating of the storage system are disclosed. The method comprises determining whether a temperature sensed by a temperature sensor is above a first threshold temperature; and in response to determining that the temperature sensed by the temperature sensor is above the first threshold temperature, lowering a voltage supplied by a power supply to one or more components in the storage system comprising transistors, wherein lowering the voltage supplied to the one or more components reduces temperature by reducing leakage current of the transistors.

Abstract: The present invention provides a detection circuit, which comprises a first detection path and a second detection path for detecting the state of a power source under test. A first current is generated on the first detection path according to power source under test; a second current is generated on the second detection path according to the power source under test. The detection circuit generates a detection signal according to the first current and the second current. The detection signal represents the state of the power source under test.

Abstract: Disclosed are a medium and high voltage grid-connected power generation system, a medium and high voltage grid-connected system, and a control circuitry thereof. The voltage of the medium and high voltage power grid is collected through the control circuitry. A power grid amplitude and a power grid phase synchronization signal are obtained, and then sent to an inverter unit through a communication line.

Abstract: A method and apparatus of validating a test pattern for at-speed testing of at least one integrated circuit, IC, design. The method comprises calculating at least one weighted rise activity, WRA, value for at least one region of the IC design based at least partly on rising gate transitions within the at least one region of the IC design when the test pattern is applied thereto, calculating at least one weighted fall activity, WFA, value for the at least one region of the IC design based at least partly on fall gate transitions within the at least one region of the IC design when the test pattern is applied thereto, and validating the test pattern based at least partly on the WRA value and the WFA value.

Abstract: Disclosed are a method and a system for guiding use of an electronic device.

Abstract: The disclosure relates to a system and method for generating an image by the following steps: obtaining a first image and a second image relating to a subject; obtaining a third image of the subject by a radiology imaging technique; registering the first image and the second image to obtain a first element; calibrating the third image to obtain a second element based on the first element; calibrating the second image based on the second element.

Abstract: A debug device to more accurately compute current consumption or a current consumption quantity from a computer program to be executed in a mobile terminal when a computer program is debugged. The mobile terminal includes a terminal log information acquisition unit configured to acquire terminal log information indicating an operating state of hardware constituting the mobile terminal during debug execution and a current consumption computation unit configured to compute the current consumption or the current consumption quantity of the mobile terminal during debug execution on the basis of the terminal log information and computation information for computing the unique current consumption or the unique current consumption quantity from the operating state of the hardware which is pre-stored.

Abstract: An apparatus for monitoring a signal transmitter for a traffic control signal installation. The signal transmitter has a light-emitting diode. The monitoring apparatus includes: a two-channel measuring device for measuring an actual light intensity of the light which is emitted by the diode and for measuring at least one electrical characteristic variable of the diode, and a control device for operating the signal transmitter depending on the measured actual light intensity and the measured electrical characteristic variable. There is also described a corresponding method, a signal transmitter, a traffic control signal installation and a computer program.

Abstract: Identification of a power source in a multiple power source scenario and characterization of loads. Embodiments herein relate to loads being supplied by multiple power sources and more particularly to identifying the power source supplying power to the load. Embodiments herein disclose a method and system for determining a power source providing power to a load, wherein the load is connected to a plurality of power sources. Disclosed herein is a method and system for characterizing at least one load currently connected to at least one power supply.

Abstract: The present invention provides for a control system for a compressor assembly of an heating, ventilation, and air conditioning (HVAC) system. A control assembly comprises a controller for varying the capacity of a compressor unit of the compressor assembly. The controller determines a first pressure of the compressor unit based on a first operating state of the compressor unit.

Abstract: Systems and methods for measuring the integrity of insulation components in electrical systems. In preferred embodiments, an active sensor is coupled to a test tap of a bushing, the active sensor having an electrical circuit electrically coupled to the test tap, and wherein the electrical circuit includes a high pass filter that divides the electrical circuit into a high frequency bus and a power frequency bus. A grounded high frequency voltage is injected into the test tap via the frequency bus circuit. Resulting voltages and currents may be measured and compared to a reference voltage to determine capacitances and power factors for both the inner and outer sections of the bushing. Once the capacitances and power factors of the bushings are known, grounded and ungrounded high frequency voltages may be injected to determine capacitances and power factors of a connected transformer or reactor.

Abstract: Provided are an anti-islanding method for a distributed generator in a direct current distribution grid and an anti-islanding device therefor. The method includes: feeding an alternating voltage component into an output end of the AC/DC interface transverter, a frequency of the alternating voltage component being less than the power frequency; sampling a first voltage signal of an output end of the DC/DC transverter; extracting a first effective value of an alternating signal included in the first voltage signal; comparing the first effective value with a first preset voltage; and controlling the distributed generator to stop operation, in a case that it is determined that the first effective value is less than the first preset voltage, which indicates that islanding occurs for the distributed generator.

Abstract: A method for setting energy supply parameters of a field device electrical current supply module. The field device electrical current supply module is connected, in such case, exclusively to one field device. The connected field device can be supplied electrical energy by the field device electrical current supply module. In the method, a field device type of the connected field device is identified first by the field device electrical current supply module. Then, a parameter setting of at least one energy supply parameter of the field device electrical current supply module is automatically read out from a database and this is loaded into the field device electrical current supply module.

Abstract: Power distribution apparatus with input and output power sensing and a method of use. A power distribution unit includes a sensor that senses power parameters of power outputs and a power input, a processor, and a communication circuit. A power management system includes a power manager, a user interface, and a plurality of power distribution units that may be located in one or more equipment cabinets and data centers. The system may compute apparent power, RMS power, power factor, energy usage over time, power usage history, or environmental history for any or all of the power distribution units. The system may identify an under-utilized server connected to one of the power distribution units and initiate a shut-down of that server.

Abstract: A processing apparatus for managing power based on data is provided. The processing apparatus may obtain, in response to an access request from a processor for particular data stored in a memory, existing power information having a predefined correspondence to the particular data, and control a power mode of the processor based on the existing power information.

Abstract: 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.

Abstract: A fuse system includes a fuse element configured to receive a current. A controller is operatively connected to the fuse element and has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a remaining fuse life (LR) of the fuse element. Execution of the instructions by the processor causes the controller to determine a temperature (T) of the fuse element. The fuse system may be part of a vehicle. The controller may be configured to determine if the remaining fuse life is below first and second thresholds. If the remaining fuse life is above the second threshold, a first message may be displayed to a vehicle display. If the remaining fuse life is below the second threshold, the vehicle may be shifted to a predefined alternative operating mode.

Abstract: The invention provides an in-line power monitor for an RF transmission line that is capable of being calibrated in-line during live conditions at the exact power level and frequency where it is used. This device uses forward and reflected directional couplers and a non-directional coupler to sample the RF voltage on the transmission line. The RF voltage of the forward and reflected channels are each split into two paths, one going to a test port and the other leading to additional circuitry which prepares the signals of the forward and reflected channels for output to power displays. Additionally, the monitor allows the user to compensate for any voltage offsets introduced by various circuitry components. Further, the monitor also allows to user to individually calibrate the output of the forward and reflected channels by applying an adjustable gain ratio correction to each channel.

Abstract: Provided are a data clustering apparatus and method, which can rapidly and accurately cluster data. The data clustering apparatus includes an index discriminating unit discriminating an index corresponding to an input position of new data input to a space for data clustering, including a lattice-type segmented space having lattice unit spaces set with different indexes, and a clustering unit creating a new cluster in the discriminated index using the input new data as a representative value when a cluster is not created at the discriminated index.

Abstract: The invention relates to a detection apparatus (12) for detecting photons. The detection apparatus comprises a pile-up determining unit (15) for determining whether detection signal pulses being indicative of detected photons are caused by a pile-up event or by a non-pile-up event, wherein a detection values generating unit (16) generates detection values depending on the detection signal pulses and depending on the determination whether the respective detection signal pulse is caused by a pile-up event or by a non-pile-up event. In particular, the detection values generating unit can be adapted to reject the detection signal pulses caused by pile-up events while generating the detection values. This allows for an improved quality of the generated detection values.

Abstract: A method for monitoring the power consumption of an electrical consumer that has a capacitive load and the controllable circuit element and the consumer are connected in series. The amplitude of the current flowing through the consumer, the voltage dropping across the consumer, and the change over time of the voltage dropping across the consumer are sensed. An allowed operating current amplitude is calculated from the voltage dropping across the consumer and from a predefined power. A charging current amplitude of the capacitive load is calculated from the change over time of the voltage dropping across the consumer. An allowed instantaneous current amplitude is calculated. The allowed instantaneous current amplitude is compared with the amplitude of the current flowing through the consumer and the electrical resistance of the circuit element is increased if the amplitude of the current flowing through the consumer is greater than the allowed instantaneous current amplitude.

Abstract: The embodiments described herein provide a system including an intelligent electronic device (IED) comprising a first processor configured to communicate control commands to power equipment, receive measurements from the power equipment, use a secure wireless system to send data to an access point, wherein the data includes the measurements, and use the secure system to communicate with a management device, via the access point, to receive configuration information, command information, or any combination thereof.

Abstract: A device for detecting an islanding condition in an electricity distribution network. The device comprises means for concurrently monitoring an islanding condition and a network event condition in the electricity distribution network, means for detecting an islanding condition in the power system network, and means for determining on the validity of detection of the islanding condition based on whether there is an associated network event with the detected islanding condition.

Abstract: A method and apparatus capable of minimizing power consumption occurring when a mobile device is changed from a sleep state to a wake-up state by partially controlling on/off of a display unit and partial booting control of a system function are provided. The method includes detecting a change of the mobile device from a sleep state to a wake-up state, turning on a display unit of the mobile device such that a first section of the mobile device displays an operating region, the first section including one or more portions of the display unit and less than an entire screen of the display unit and waiting for a system function registered in the operating region.

Abstract: A power management circuit comprises an energy pump, a control circuit and a power consuming circuit. The power management circuit is connected in serial with a current loop in a serial connection with a field device to cause a regulated voltage drop across the serial connection at an insertion voltage and to output an electrical power derived from the insertion voltage. The energy pump inputs at least a portion of the insertion voltage, and a feedback sense, and output a charging voltage based on the feedback sense. The charging voltage sources the electrical power output by the power management circuit. The control circuit regulates the insertion voltage by modulating the feedback sense to the energy pump, and modulates the feedback sense in response to an electrical change in the current loop. The power consuming circuit receives the electrical power from the power management circuit.

Abstract: A method for allocating energy to a plurality of devices, wherein each device is configured to consume, store and/or supply energy, the method includes the steps of: assigning each device to a group of devices; assigning an aggregation node device to each group of devices; for a selection of devices transmitting local power cost functions of the devices and/or power usage profiles of the devices with respect to a predetermined time slot to the assigned aggregation node device; at the aggregation node device, generating aggregated data as a function of the received local power cost functions and/or power usage profiles; transmitting the aggregated data to a central processing device; at the central processing device, optimizing a global cost function for allocating power to the devices as a function of the aggregated data.

Abstract: A method for allocating energy to a plurality of devices, wherein each device is configured to consume, store and/or supply energy, the method includes the steps of: assigning each device to a group of devices; assigning an aggregation node device to each group of devices; for a selection of devices transmitting local power cost functions of the devices and/or power usage profiles of the devices with respect to a predetermined time slot to the assigned aggregation node device; at the aggregation node device, generating aggregated data as a function of the received local power cost functions and/or power usage profiles; transmitting the aggregated data to a central processing device; at the central processing device, optimizing a global cost function for allocating power to the devices as a function of the aggregated data.

Abstract: A wireless power transmission method includes searching for one or more routes to be used to transmit power to a reception resonator through one or more relay resonators, and converting the routes to respective one or more two-port networks. The method further includes calculating a transmission efficiency of each of the routes based on the two-port networks, and selecting a route with a highest transmission efficiency from the routes. The method further includes wirelessly transmitting power to the reception resonator through the selected route.

Abstract: Devices and methods for monitoring and determining alternating current (AC) power system parameters are provided. In some implementations, the device can include a processor; and at least one non-transitory computer-readable medium storing computer-executable instructions for implementing a number of components. The components include a monitor configured to: sense an AC line voltage signal and an AC current voltage signal; filter the AC line voltage signal; calculate average AC line voltage and current values based, at least, on a DC voltage and current values corresponding to the AC line voltage and current signals, respectively; determine fundamental AC line voltage and current signals based, at least, on zero crossings of the respective average AC line voltage value and the average AC line current value; and determine one or more AC power system parameters based, at least, on the fundamental AC line voltage signal and the fundamental AC line current signal.

Abstract: A method includes generating samples of a grid parameter at a point of common coupling, fitting a waveform to the samples, and detecting an islanding condition in response to a parameter of the waveform. The waveform may be fit to the samples using a nonlinear algorithm. A controller includes a waveform fitting circuit to fit a waveform to samples of a grid parameter, an inverter controller to generate one or more switching signals to control an inverter in response to an error signal, and an error generator arranged to generate the error signal in response to a parameter of the waveform.

Abstract: Methods and systems for collaborative location tracking. Commuters can be organized into a group according to commuter client devices (e.g., smartphones, tablet computing devices, etc.) respectively associated with the commuters. The commuter client devices are tracked as a group rather than individually and based on power efficient context-aware location data derived from the commuter client devices and a generated trip plan in association with data indicative of real-time dynamics so that power usage of individual commuter client devices is rationally minimized.

Abstract: There is described a system for measuring energy consumption of individual electrical devices amongst a plurality of electrical devices. The system is adapted to determine in real time energy consumption while reducing its own consumption of energy by adjusting a transmission rate to between status sensing devices and a consumption evaluation device. The transmission rate is adjusted as a function of learned energy consumption habits and/or consumption characteristics of individual electrical devices.

Abstract: One embodiment describes a non-transitory tangible computer-readable medium storing a plurality of instructions executable by a processor of an electronic device in a wide area monitoring system. The instructions include instructions to receive a synchro-command from the wide area monitoring system via a network interface, in which the synchro-command is time synchronized with a global clock by a time stamp encoded on the synchro-command; accept or reject the synchro-command with an input handler based at least in part on a sender ID and a receiver ID encoded on the synchro-command; schedule execution of a control command encoded on the synchro-command with a synchro-command manager based at least in part on a scheduler time encoded on the synchro-command; and execute the control command encoded on the synchro-command with the processor based at least in part on an application ID encoded on the synchro-command.

Abstract: A microgrid having a plurality of electrical phases A, B & C. The microgrid includes an energy storage connected to a first phase A and a second phase B. The microgrid also includes a first single-phase distributed generator (DG) connected to the first phase and configured for injecting power into the first phase. The microgrid also includes a second single-phase DG connected to the second phase and configured for injecting power into the second phase. The microgrid also includes a first single-phase load connected to the first phase. The microgrid also includes a second single-phase load connected to the second phase. The microgrid also includes a control system configured for controlling the microgrid such that power is redistributed from the second phase to the first phase via the energy storage.

Abstract: A method and an arrangement are provided in connection with a photovoltaic power generator composed of series-connected photovoltaic modules. The method includes determining a maximum power point voltage (UMPP) and a maximum power point current (IMPP). The method also includes determining the ambient temperature (Tamb), calculating an estimated maximum power point voltage (Uest) by using maximum power point current (IMPP) and the determined ambient temperature (Tamb), comparing the estimated maximum power point voltage with the determined maximum power point (UMPP), and determining on the basis of the comparison whether the generator is operating under uniform conditions or in conditions with two maximum power points.

Abstract: Power consumed by a digital circuit that contains multiple sub-circuits may be computed. Each sub-circuit may include more than one transistor and have at least one input. A signal transition sensor may be connected to an input to each sub-circuit and configured to count the number of signal transitions at the input or to time the duration of a signal transition at the input. Weight information may be stored that is indicative of an amount of power that is being consumed by each sub-circuit based on a count that is counted by or a time duration that is timed by each signal transition sensor that is connected to an input of that sub-circuit. The amount of power being consumed by the digital circuit may be computed based on a count that is counted by or a time duration that is timed by each signal transition sensor and the weight information.

Abstract: A method is disclosed for determining fault states in a half-bridge circuit having at least a first semiconductor switch and a second semiconductor switch are connected in series with one another and each controllable by a control signal to switch between an open and a closed switching state. For each of the first and second semiconductor switches, an actual switching state and a setpoint switching state are determined. A bridge short circuit in the half-bridge circuit is identified if both (a) the actual switching state of the first semiconductor switch is different than the setpoint switching state of the first semiconductor switch and (b) the actual switching state of the second semiconductor switch is different than the setpoint switching state of the second semiconductor switch.

Abstract: Disclosed herein is an electric power management apparatus including: an electric power measurement block configured to measure an electric power consumption amount of an electric power consumer; and an electric power comparison block configured to make a comparison between an electric power consumption amount measured by the electric power measurement block and an electric power demand forecast amount indicative of a forecast amount of an electric power demand of the electric power consumer.

Abstract: A building management system (BMS) includes a baseline model generator configured to receive an initial set of predictor variables for potential use in an energy usage model for a building, generate a first set of coefficients for the baseline energy usage model based on the initial set of predictor variables, remove one of the predictor variables from the initial set of predictor variables to create a subset of the initial set of predictor variables, generate a second set of coefficients for the baseline energy usage model based on the subset of the initial set of predictor variables, calculate a test statistic for the removed variable using a difference between the first set of coefficients and the second set of coefficients, and automatically select the removed predictor variable for use in the baseline energy usage model in response the test statistic exceeding a critical value.

Abstract: Techniques for protecting a power amplifier (PA) are described. In an exemplary design, an apparatus includes (i) a PA module to amplify an input RF signal and provide an output RF signal and (ii) a protection circuit to control a transmitter gain to protect the PA module against high peak voltage. In an exemplary design, the protection circuit includes a set of comparators to quantize an analog input signal and provide digital comparator output signals used to adjust the transmitter gain. In another exemplary design, the protection circuit reduces and increases the transmitter gain with hysteresis. In yet another exemplary design, the protection circuit has faster response to rising amplitude than falling amplitude of the output RF signal. The hysteresis and/or the different rise and fall responses may allow the protection circuit to avoid toggling the transmitter gain under severe load mismatch and to handle time-varying envelope due to amplitude modulation.

Abstract: The present disclosure relates to a method of counting step-number. When detecting step-number executed by an electronic device, a g-sensor of the electronic device detects whether the moving speed is normal (one step per second), i.e. the detection result is the G value, or the movement speed has abnormal variation (such as one step per two seconds or five seconds), i.e. the detection result is the G value at Y axis, and the electronic device computes the step-number according to sums of maximum values and minimum values of speed variations every second within a counting period, and average of the sums. The processing unit determines the variation of the step-numbers of the G values and the G values at Y axis, and selects one of the two step-numbers for use as a correct step-number detection result, so as to achieve the objective of precisely computing step-number upon the speed variation.

Abstract: A data transmission device remotely monitors and controls a distributed process system, which exchanges data with a superordinate communication unit via an interface and a communication connection in accordance with the IEC 61850 standard, and which is connected to a subordinate process via a further interface and a station bus. The data transmission device includes functional units integrated therein which are implemented as interfaces for connecting the process to at least one superordinate communication unit in accordance with the IEC 61850 standard.

Abstract: A power management controller for controlling start and stop of a plurality of power supplies is disclosed. Each of the power supplies belongs to one of N rails, in which (N+1) states including a first state where all of the rails are turned off and a (k+1)th state (k=1, 2, . . . N) where a first rail to a kth rail are turned on are specified. The power management controller includes a task list memory, a head address register file, a state indicator, and an event management unit.

Abstract: An apparatus and method of managing power for a mobile device is disclosed, which can prevent an inflow of overcurrent to the device when the device is charged. The apparatus includes a state judgment unit to judge whether a battery of the mobile device is being charged, a voltage level detection unit to detect a voltage level of the battery if the battery is judged as being charged, and a control unit to control a driving of the mobile device in accordance with the detected voltage level.

Abstract: The total electric power that is supplied to a house, the electric power P21 to P24 that is consumed by electrical equipment that is used in the house, and electric power that is generated by an electric power generator 60 are automatically displayed together with weather information WR1 that indicates the weather every hour. As a result, a user is able to check the amount of electric power consumed by the electrical equipment 50 according to the weather, or check the amount of electric power that is generated according to the weather. Therefore, it is possible to efficiently operate the electrical equipment 50 according to the weather.

Abstract: A device is disclosed for detecting an islanding condition in an electricity distribution network, by receiving a signal of the electricity distribution network, and determining an islanding condition based on the received signal. The device determines a voltage total harmonic distortion change parameter for each phase component in the received signal, determines a voltage unbalance change parameter in the received signal, compares each of the voltage total harmonic distortion change parameters and the voltage unbalance change parameter to respective triggering conditions, and concludes an islanding condition to have been detected when the voltage total harmonic distortion change parameter for each phase component of the signal and the voltage unbalance change parameter fulfill their respective triggering conditions.

Abstract: A debounce circuit eliminates noise, glitches, or transient signal variations resulting from mechanical bounce occurring at a change of state of analog signals and provides a dynamic debounce period alteration and time base variation without loss of the current debounce state. The debounce circuit has a physical counter that is configured for being adjusted within a virtual counter such that the noise, glitches, or transient signal variations resulting from mechanical bounce occurring at an initiation of a change of state of an analog input signal from a source device are filtered by delaying a change of output state of the debounce circuit. The debounce circuit includes a strobe generator that produces a strobe signal that is a submultiple of a master clock that is determined by the location of the physical counter within the virtual counter that is used to increment the physical counter within the virtual counter.

Abstract: In an energy management system for a data center, intelligent power distribution units are synchronized by a time server. Measurements carried out by the intelligent power distribution units are commenced and stopped synchronously. Each intelligent power distribution unit carries out a calculation based upon the Unix Epoch Time of receipt of a sampling command from the energy management system.