Abstract: A system for generating line ratings includes a module for receiving data concerning a power line, a module for stores the data concerning said power line, and a module receives weather data associated with each of the geographic locations along the length of the power line. A processor is configured to select between generating a line rating based on the at least one tension/sag measurement and the weather data associated with each of said geographic locations along the length of said power line, where if the power line has a load exceeding a predetermined threshold, then the processor generates a line rating based on the at least one tension/sag measurement, and where if the power line has a load below the predetermined threshold, then the processor generates a line rating based on the weather data associated with each of the geographic locations along the length of the power line.

Abstract: An apparatus and method for testing a temperature sensor in a vehicle is provided. The apparatus includes a power device. The power device is configured to receive a power signal and to filter the power signal to generate a filtered power signal. The power device is further configured to compare the filtered power signal to a first threshold and to test the temperature sensor based on the comparison of the filtered power signal to the first threshold.

Abstract: A carbon emission tracker is disclosed. The carbon emission tracker includes a main body, a power input interface, a power output interface, a power detecting unit, a communication unit, a memory unit, and a processing unit. The power detecting unit is configured to detect an electricity usage of an electrical appliance. The processing unit is configured to aggregate power consumption data over a time period and to store the power consumption data for the time period to the memory unit. The processing unit transmits the power consumption data of the memory unit to a data center through the communication unit. The power consumption data further includes identification data of the electrical appliance.

Abstract: A method includes obtaining a voltage phasor, a current phasor and a mechanical rotor angle of a source end generator. A receiving end generator impedance and a line impedance between the source end generator and a receiving end generator is also estimated. Furthermore, a swing angle between an internal voltage of the source end generator and an internal voltage of the receiving end generator as a function of obtained voltage phasor, current phasor, mechanical rotor angle and the impedances is estimated. A power swing condition is then determined based on the estimated swing angle.

Abstract: A system for conducting a real-time power capacity assessment of an electrical system is disclosed. The system includes a data acquisition component, a power analytics server and a client terminal. The data acquisition component is communicatively connected to a sensor configured to acquire real-time data output from the electrical system. The power analytics server is communicatively connected to the data acquisition component and is comprised of a virtual system modeling engine, an analytics engine and a machine learning engine. The machine learning engine is configured to store and process patterns observed from the real-time data output and the predicted data output, forecasting power capacity of the electrical system subjected to a simulated contingency event.

Abstract: Estimating operational states of a plurality of electrical devices connected to an electrical power line, that is, an electricity usage condition is appropriately carried out. Current and voltage are calculated as time-series from the electrical power line to which the plurality of electrical devices is connected. Signal components of power frequency and harmonics thereof are extracted from the time-series of the current and the voltage. Admittance vector time-series are calculated from the signal components. The admittance vector time-series are compared with combinations of feature vectors of the plurality of electrical devices connected to the electrical power line, to obtain an estimated result of the operational states of the plurality of electrical devices.

Abstract: A low power display device including a power control circuit for controlling power from an environmental energy source to a power storage device that is charged by the environmental energy source, is described.

Abstract: A method for identifying an electric appliance and an apparatus and a system thereof are provided. The method includes the following steps: respectively collecting a first power event on a first phase power and a second power event on a second phase power; when the first power event and/or the second power event are collected, determining whether the first power event and the second power event substantially occur at the same time; if not, identifying an unknown electric appliance as a first type electric appliance; and if yes, determining whether the first power event and the second power event are substantially the same, wherein if yes, identifying the unknown electric appliance as a second type electric appliance, and if no, identifying the unknown electric appliance as the first type electric appliance.

Abstract: A data processing device includes: a data obtaining section obtaining time series data on a total value of current consumed by a plurality of electric apparatuses; and a parameter estimating section obtaining a model parameter when states of operation of the plurality of electric apparatuses are modeled by a factorial HMM on a basis of the obtained time series data.

Abstract: An energy usage data visualization process includes receiving an energy data presentation request from a user, processing the energy data presentation request by the customer portal service module, and retrieving energy usage data associated with the energy data presentation request. The energy usage data is retrieved from a storage device, which is communicatively coupled to the customer portal service module. The service module produces a visual output based upon the presentation request and the retrieved energy usage data. The service module produces the visual output for presentation onto the display of the end user interface, by using an energy data visualization template of a template module application. The template module application is determined by the energy data presentation request, and is stored on the customer portal service module. The customer portal service module has a housing that is separate from the housing of the end user device.

Abstract: The invention relates to detection apparatus for detecting a partial discharge from live electrical apparatus, the detection apparatus comprising detection means (Pc) mounted on the live electrical apparatus (T) for the purpose of detecting the occurrence of at least one partial discharge, wherein said detection apparatus further comprises additional means (D1, D2, S) suitable for determining whether a detected partial discharge is internal or external relative to the live apparatus.

Abstract: A system and technique for detecting a device that requires power is implemented with a power detection station. The power detection system includes a detector having an output and a return which are coupled together by the device when the device requires power. The detector includes a word generator for generating test pulses for transmission to the device via the detector output, and a comparator for comparing the detector output with the detector return. The power detection station has a wide variety of applications, including by way of example, a switch or hub.

Abstract: A system is provided to associate containers with handling equipment (HE) in a container storage facility. In the system an operation detector, such as a twistlock sensor that indicates when a container is picked up or dropped off, is installed on a first HE which is a piece of container handling equipment (CHE) that can lift the container. An event detector, such as a vibration sensor or distance measuring radar, is further installed on a second HE that is a tractor with an attached chassis for receiving and transporting a container. The event detector indicates when a container-operation-related event, such as a container pick up or drop off, occurred on the tractor chassis. The two detectors (operation and event) are used by a processor to associate the container with either the CHE or the tractor. The operation and event detectors can further be used in conjunction with position sensors such as a GPS sensor to accurately determine the position of the tractor and the CHE in a container yard.

Abstract: A controller for a generator set is disclosed. The controller may have a memory module having stored therein calibration factors associated with an offset error, a scale error, and a time delay error, and a processor module in communication with the memory module. The processor module may be configured to monitor at least one parameter of electric power directed from the generator set to a load, detect connection of the generator set to the load, and determine adjustments to the calibration factors after connection of the generator set to the load based on a comparison of the at least one parameter monitored by the processor module and measured at the load.

Abstract: Techniques are disclosed relating to determining power consumption of an integrated circuit. In one embodiment, an integrated circuit is disclosed that includes a power monitor unit configured to receive a temperature of the integrated circuit, and to determine an estimate of power consumed by transistor leakage of the integrated circuit based on the received temperature. In one embodiment, to determine the estimate, the power monitor unit is configured to multiply a base value and a scaling factor that is adjusted based on the received temperature. In some embodiments, the power monitor unit is configured to receive performance state information of the integrated circuit, and to determine an estimate of power consumed by transistor leakage of the integrated circuit based on the performance state information.

Abstract: Technologies are described herein for adaptive brownout detection and mitigation in a storage device having rotational storage media. A target position on the rotational storage media for a current write operation is received. A value for a brownout mitigation parameter is determined based on the target position. A brownout condition is then detected on the storage device, and upon detecting the brownout condition, the current write operation is completed before a power-on reset of the storage device.

Abstract: Disclosed are methods, systems, and other implementations, including a method that includes measuring a plurality of samples of power produced by a photovoltaic (PV) array over a first interval of time, determining, based on the measured plurality of samples a non-linear predictive model of a behavior of the power produced by the PV array, and performing a first adjustment of the PV array's voltage at a second time instant subsequent to an end of the first interval of time. The method further includes measuring at a third time instant another sample of the power of the PV array with the adjusted voltage, and determining a power difference between the power of the PV array with the adjusted voltage at the third time instant and a computed power level of the PV array at the third time instant determined from the non-linear predictive model.

Abstract: A system for analyzing an interior energy system including: at least one detachable sensor arranged to monitor a portion of the interior energy system; and an apparatus including a processor configured to receive data of a first parameter of the interior energy system from the at least one detachable sensor and determine a second parameter of the interior energy which is inferred on the basis of the received data of the first parameter; and determine a characteristic of the interior energy system from the determined second parameter. The system may provide analysis of the interior energy system and recommend improvements.

Abstract: A monitoring method to monitor and/or protect modules, in particular a radio-frequency antenna of a magnetic resonance system, includes a measurement step in which at least one first characteristic monitoring variable is measured by at least one first measurement unit, and at least one calculation step in which at least one maximum limit value for a power and/or a voltage within the module is calculated using the at least one first measured characteristic monitoring variable. At least one second characteristic monitoring variable, different than the at least one first characteristic monitoring variable, is measured in the measurement step.

Abstract: The power consumption of a computing device is inferred from the utilization rates of individual components of the computing device and a utilization-to-power-consumption transfer function that was derived by benchmarking that, or an analogous, computing device. The inferred power consumption of a computing device is aggregated to infer the power consumption of various groups and super-groups of computing devices. The historical power consumption of computing devices is inferred based on the utilization rates of individual components of the computing devices at relevant times in the past. Historical power consumption is used to derive a power consumption profile of a computing device and the inferred current power consumption of such a computing device is compared to such a power consumption profile, and to the historical power consumption, to identify deviations therefrom, which can provide proactive detection of potential hardware faults, software glitches, or other errors.

Abstract: A power outage detection system. The system includes a device configured to increment a reboot counter when the device is powered up, and to transmit a first message when the device loses power and a second message when the device is powered up, and a back office system. The first message includes the value of the reboot counter and a timestamp, and the second message includes the value of the reboot counter. The back office system includes a finite state machine configured to receive the first and second messages. The finite state machine determines if the received first message is valid using the value of the reboot counter and the timestamp, and determines if the received second message is valid using the value of the reboot counter. The finite state machine then outputs an accurate indication of the state of the device.

Abstract: Methods and systems for predicting an end of life of a wind turbine component including receiving environmental conditions indicative of natural surroundings of wind turbines within a wind turbine farm, receiving component performance metrics indicative of an operation of wind turbines within a wind turbine farm, and distributing the wind turbines into peer-clusters such that the wind turbines within each of the peer-clusters have similar environmental conditions. The methods and systems further include identifying a low performing wind turbine and a remaining portion of wind turbines within one of the peer-clusters based upon a predicted performance model, processing the component performance metrics of the low performing wind turbine, identifying a critical component of the low performing wind turbine and predicting the end of life of the critical component of the low performing wind turbine.

Abstract: A distributed reflectometry device for diagnosing a network is disclosed. According to one aspect, the device includes at least one transmission line and several reflectometers connected to the network. A transmission portion of the device includes a first memory configured to store at least one test signal and a second memory configured to store weighting coefficients. The transmission portion may also include a first multiplier of a test signal (s) with a coefficient ?m, for producing a measurement m and a digital-to-analog converter connected to the line. A reception portion of the device includes an analog-to-digital converter configured to receive a signal from the line and provide a vector for the measurement m, a second multiplier of configured to multiply the vector with the coefficient ?m, an averaging module, and a post-processing and analysis module.

Abstract: In a solar cell evaluation device 1, a spectral sensitivity P(?) of a solar cell 2, which is a measurement object, is measured in advance. When the solar cell 2 is evaluated, a spectral irradiance L (?) of illumination light is measured, generated power EL of the solar cell 2 that is generated with the illumination light is measured, and the measured generated power EL of the solar cell 2 is converted into generated power ES generated by the solar cell 2 in the case of illumination with illumination light with a spectral irradiance S(?) based on the reference solar light. Therefore, since the calibration in the solar cell evaluation device 1 is performed with software, the calibration can be performed in a simple manner and at a low cost even when the solar cell type is changed.

Abstract: A storage unit stores a first reference value of an input/output electric signal into/from control unit and a second reference value of an input/output electric signal into/from a monitoring unit. If the amount of deviation between the input/output electric signal into/from the control unit and the first reference value exceeds a threshold value, a first caution signal output unit detects degradation of the control unit and outputs a caution signal. If the amount of deviation between the input/output electric signal into/from the monitoring unit and the second reference value exceeds a threshold value, a second caution signal output unit detects degradation of the monitoring unit and outputs a caution signal. The first and second reference values are acquired and stored in the storage unit in a period between completion of production of the control unit and the monitoring unit and start of the operation thereof.

Abstract: The internal temperature of an electrochemical device may be probed without a thermocouple, infrared detector, or other auxiliary device to measure temperature. Some methods include exciting an electrochemical device with a driving profile; acquiring voltage and current data from the electrochemical device, in response to the driving profile; calculating an impulse response from the current and voltage data; calculating an impedance spectrum of the electrochemical device from the impulse response; calculating a state-of-charge of the electrochemical device; and then estimating internal temperature of the electrochemical device based on a temperature-impedance-state-of-charge relationship. The electrochemical device may be a battery, fuel cell, electrolytic cell, or capacitor, for example. The procedure is useful for on-line applications which benefit from real-time temperature sensing capabilities during operations. These methods may be readily implemented as part of a device management and safety system.

Abstract: System and method for determining consumption of resources to assist a meter reading personnel are described. According to an embodiment, the system includes a processor and an extraction module coupled to the processor configured to extract historical data associated with a meter to be read. The system further includes a prediction module coupled to the processor configured to determine a predicted resource consumption for a current cycle based on the historical data and provide the predicted meter reading to a display device corresponding to a meter reading personnel. Furthermore, the system includes a computation module coupled to the processor configured to determine an actual resource consumption for the current cycle based on an analysis of an observed resource consumption of the current cycle with respect to the predicted resource consumption.

Abstract: A DC high potential testing meter comprises first and second probes. The first probe comprises an insulated shield supporting an electrode extending from a distal end of the shield. A high voltage resistor and a high voltage diode in the shield are connected in series with the electrode. A capacitance formed by a metallic collar across the high voltage diode provides uniform voltage distribution along the high voltage diode. The second probe comprises an insulated shield supporting an electrode. A high voltage resistor in the shield is connected in series with the electrode. A meter comprises a housing enclosing an electrical circuit for measuring voltage across the electrodes and provides an output representing measured voltage.

Abstract: Provided are methods and systems for test power analysis. An example method can comprise creating a test pattern from topology data of an integrated circuit and creating a map from the topology data of the integrated circuit. A test power analysis of the integrated circuit can be performed using the created test pattern and the map. In an aspect, an example method can comprise obtaining transition information via monitoring transitions of a plurality of test cycles in a test session of an integrated circuit. Simulation data can be obtained via simulating a plurality of functions of the plurality of test cycles in the test session of the integrated circuit using the transition information. A test power analysis of the plurality of test cycles in the test session of the integrated circuit can be performed using the obtained simulation data.

Abstract: The disclosed invention is a distributed control system for operating a DC bus fed by disparate DC power sources that service a known or unknown load. The voltage sources vary in v-i characteristics and have time-varying, maximum supply capacities. Each source is connected to the bus via a boost converter, which may have different dynamic characteristics and power transfer capacities, but are controlled through PWM. The invention tracks the time-varying power sources and apportions their power contribution while maintaining the DC bus voltage within the specifications. A central digital controller solves the steady-state system for the optimal duty cycle settings that achieve a desired power supply apportionment scheme for a known or predictable DC load. A distributed networked control system is derived from the central system that utilizes communications among controllers to compute a shared estimate of the unknown time-varying load through shared bus current measurements and bus voltage measurements.

Abstract: A computing device for investigating a load is described. The computing device includes a processor and executable instructions stored in memory that is in electronic communication with the processor. The computing device requests load driving data corresponding to a load that is driven by an electronic device. The computing device also receives the load driving data from the electronic device. The computing device further obtains load characterization data.

Abstract: Some embodiments relate to a system for measuring power produced by a power source. The system includes a first voltage sensor for sensing a first voltage difference between a first voltage and a second voltage and a second voltage sensor for sensing a second voltage difference between a third voltage and the second voltage. The system further includes a first current sensor for sensing a current difference between a first current and a second current, and a second current sensor for sensing a current difference between a third current and the second current. The system further includes a power measuring device that determines the power produced by the power source using the first and second voltage differences and the first and second current differences.

Abstract: This disclosure relates to receiving an electromagnetic signal by a power detector, converting the received electromagnetic signal into a plurality of digitized samples, continuously acquiring and storing the plurality of digitized samples of into one or more sample memory buffers based upon a plurality of power processing events, simultaneously reading out of the one or more sample memory buffers the stored plurality of digitized samples, linearizing the plurality of digitized samples, wherein linearizing comprises converting the plurality of digitized samples into a plurality of linear power units such that the linear power units represent power measurements based upon the plurality of power processing events, and trace averaging the plurality of linear power units, wherein the simultaneously reading out of the one or more sample memory buffers, linearizing, and trace averaging are pipeline processed.

Abstract: A system is for a plurality of different electric load types. The system includes a plurality of sensors structured to sense a voltage signal and a current signal for each of the different electric loads; and a processor. The processor acquires a voltage and current waveform from the sensors for a corresponding one of the different electric load types; calculates a power or current RMS profile of the waveform; quantizes the power or current RMS profile into a set of quantized state-values; evaluates a state-duration for each of the quantized state-values; evaluates a plurality of state-types based on the power or current RMS profile and the quantized state-values; generates a state-sequence that describes a corresponding finite state machine model of a generalized load start-up or transient profile for the corresponding electric load type; and identifies the corresponding electric load type.

Abstract: An object of the present invention is to provide a simple way of measuring the local average absorbed power of a radio device having a plurality of antennas. A local average absorbed power measuring method of the present invention has an individual measurement step and a calculation step. In the calculation step, local average absorbed power candidates are obtained while weights are being varied. In a local average absorbed power candidate calculation sub-step, the absorbed power distribution in three-dimensional space is calculated from the combined electric field or combined magnetic field obtained in the combination sub-step, and a local average absorbed power candidate is obtained. In a local average absorbed power selection step, the highest one of the local average absorbed power candidates is specified.

Abstract: A monitoring system and method for monitoring performance of individual powers sources in a distributed power source system. A monitoring module is coupled to each of the power sources, or to each string of serially connected power sources, to monitor and collect data regarding current, voltage, temperature and other environmental factors at the power source. The collected data is transmitted over a power line to a central analysis station for analysis. Data collected from each source indicates malfunction or degradation at the source. Comparison of data collected from adjacent sources filters for environmental factors impacting neighboring sources such as cloudy days for a solar panel. Comparison of data collected from the same source at different times indicates soiling or degradation of the source with time or periodic events such as a moving shade from an adjacent building.

Abstract: A method to estimate power dissipation of an inverter configured to control electric energy to an electric machine. The method can estimate both conductive power losses and switched power losses of a transistor or a diode in a power switch or driver stage of the inverter. The estimation includes applying a correction factor (CF) to power dissipation calculations if the modulation index of the inverter is greater than a threshold indicating that the inverter is being over-driven or operated in a non-linear region.

Abstract: A transmit power measurement apparatus includes a transmit power detection path, a compensation circuit and a tracking circuit. The compensation circuit includes a programmable filter device and a compensation controller. The programmable filter device generates a filter output. The compensation controller sets the programmable filter device at least based on a frequency response of the transmit power detection path. The tracking circuit generates a transmit power tracking result at least based on the filter output.

Abstract: A method provides the operating personnel of a control center of an electrical energy supply with information about any oscillations that have occurred in an energy supply network. A signal indicating an oscillation of an electrical variable in an electrical energy supply network is generated. A state variable characterizing an oscillation state of the electrical variable is calculated from measured values of current and/or voltage indicators. If an oscillation exists, an amplitude characteristic value indicating the amplitude of the state variable and a damping characteristic value indicating a damping of an oscillation of the state variable are determined. The position of a particular value pair containing an amplitude characteristic value and an associated damping characteristic value is compared with hazard ranges, which are present in a value range and indicate a particular hazard level of the oscillation in the energy supply network. The signal indicating the oscillation is output.

Abstract: A light performance monitoring device and optionally integrated controller includes a monitor module that directly monitors energy usage of at least one energy load to generate at least one measurement of energy usage; a storage module stores a series of baseline values of energy usage of the energy load, a comparator module compares energy measurements made at predetermined intervals with the baseline values, and a notification module notifies a designated recipient that there is a deviation from the baseline values consistent with a burned out or non-operational light fixture, including but not limited to light bulbs or ballast devices. A control module optionally integrated with the light performance monitoring device can be operatively coupled to the monitor module to control energy usage by the at least one energy load via a data link in a predetermined manner that is based on the at least one measurement of energy usage.

Abstract: A method for generating a value for available operating reserve for electric utility. Electric power consumption by at least one device is determined during at least one period of time to produce power consumption data, stored in a repository. Prior to a control event for power reduction and under an assumption that it is not to occur, power consumption behavior expected of the device(s) is determined for a time period during which the control event is expected to occur based on stored power consumption data. Additionally, prior to the control event, projected energy savings resulting from the control event, and associated with a power supply value (PSV) are determined based on devices' power consumption behavior. Amount of available operating reserve is determined based on projected energy savings.

Abstract: A data processing device includes: a data obtaining section obtaining time series data on a total value of current consumed by a plurality of electric apparatuses; and a parameter estimating section obtaining a model parameter when states of operation of the plurality of electric apparatuses are modeled by a factorial HMM on a basis of the obtained time series data.

Abstract: A method for modeling power usage within a macrogrid uses data relating to the behavioral patterns and states (“BA”) of the users, data relating to external impacts on power usage and disaggregated power consumption data in at least one premises within the macrogrid (forming “power usage model data”) and thereafter a method of forecasting and predicting future power requirements within the macrogrid uses such power usage model data.

Abstract: Systems and methods are provided for automated electricity delivery management. More specifically, the invention relates to systems and methods for instantly and electronically determining available electricity, predicting short-term delivery forecasts, evaluating transmission availability, capacity and paths, determining inter-tie availability, capacity and price, and bidding the power into the market. Such systems and methods may occur on a mobile device, and/or web interface.

Abstract: A system for generating an energy usage profile of an electrical device is provided. The system includes a meter configured to measure electric energy usage; a memory area for storing an energy usage profile corresponding to one or more electrical devices associated with the electric meter, and at least one processor. The at least one processor is programmed to receive a request to turn off power to each of the one or more electrical devices associated with the meter, receive a request to turn on a first electrical device of the one or more electrical devices, obtain a ramp up waveform of energy usage of the first electrical device, convert the ramp up waveform to a digital signature, and store the ramp up digital signature of the first electrical device in the memory area.

Abstract: A method for accurately performing power estimation on a battery of an electronic device includes: monitoring a charging current of the battery to obtain charging current data of the charging current with respect to time; and performing curve mapping according to the charging current data and according to a plurality of sets of predetermined curve characteristic data, in order to determine an estimation parameter corresponding to one of a plurality of predetermined cycle counts, wherein the estimation parameter is utilized for performing power estimation, and the sets of predetermined curve characteristic data respectively correspond to the predetermined cycle counts, which represent estimated ages of the battery, respectively. At least one associated apparatus is also provided.

Abstract: A method and apparatus for storing data regarding parameter values by making a series of measurements of parameter values at times separated by predetermined time intervals, processing the series of measurements of parameter values made at predetermined time intervals to identify events at different times, generating a further series of measurements of parameter values at each of said different times, and storing each of said further series of measurements of parameter values in association with said respective different time.

Abstract: A method for determining a power reduction due to ageing of a photovoltaic module includes measuring a variable associated with a performance of the module in one or more time periods within a given year, each time period defining a class, and constructing curves of discrete values, each power curve constructed from the measured electric variable at a plurality of times of a day within each class, and the curves constructed for a plurality of years. The method includes determining energy values based on the constructed curves for at least one class for each of the plurality of years, and determining a power reduction of the photovoltaic module with respect to one or several previous years by calculating a difference between the energy output values of a given class in a particular year and the energy output values of the given class in a year previous to the particular year.

Abstract: A battery pack includes: a chargeable and dischargeable battery; and a microcomputer that acquires information on a voltage drop across the battery in a condition equivalent to no load and stores the information therein.

Abstract: Systems and methods are disclosed to provide a process independent circuit for measuring output current of low drop out (LDO) regulators as well as buck regulators. The system can also measure the on resistance (RDSon) of the buck power transistors.