Abstract: A battery monitoring system including an on-site battery event monitor (BEM) that sends out battery-related data to a server over a wide area network (WAN). The BEM sends out data in a broadcast (or unicast manner) to predetermined server(s) without being queried or polled. This improves network security and data security and also eliminates the need for on-site network configuration and administration.

Abstract: The present invention may comprise an apparatus and method for calculating power consumption, including a unit for generating a clock-level analysis without synthesis of an algorithm description and calculating operating ratios of storage elements and arithmetic units. The invention may also comprise a method for estimating the power to be consumed by a SystemC model. By estimating this value, a user may gauge the amount of power a specific semiconductor design might consume, once manufactured into a chip.

Abstract: Systems and methods for using an energy use model of a building for benchmarking is shown and described. An exemplary method includes receiving building data indicative of one or more characteristics of the building. The method further includes generating an energy use model for the building based on the building data and using the energy use model to generate statistics for the building. The method also includes identifying one or more other buildings having the same classification as the building. The method yet further includes comparing the generated statistics for the building to statistics for the identified one or more other buildings and providing an indication of the comparison.

Abstract: A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.

Abstract: A heterogeneous processing system includes a compiler for performing power-constrained code generation and scheduling of work in the heterogeneous processing system. The compiler produces source code that is executable by a computer. The compiler performs a method. The method includes dividing a power budget for the heterogeneous processing system into a discrete number of power tokens. Each of the power tokens has an equal value of units of power. The method also includes determining a power requirement for executing a code segment on a processing element of the heterogeneous processing system. The determining is based on characteristics of the processing element and the code segment. The method further includes allocating, to the processing element at runtime, at least one of the power tokens to satisfy the power requirement.

Abstract: The state of an access link and backhaul link of a low power node may be determined and controlled after a low power node is initialized. The overhead signaling on the access link of a relay is controlled based on detecting a user equipment (UE). The connection on the backhaul link of the relay is managed in response to the overhead signaling on the access link.

Abstract: A system and method for power management by providing advance notice of events. The method includes snooping a register of an operating system timer to determine a timer period associated with a scheduled event. A unit of a computer system is identified that is in a low power state. A wake up latency of the unit is determined that is based on the low power state. An advance period is determined based on the wake up latency. An advance notice of the operating system timer is triggered based on the timer period and the advance period to wake up the unit.

Abstract: Apparatus and method including acquiring a signal indicative of power consumption; detecting a transient in the signal; extracting a feature indicative of the transient, wherein extracting the feature includes: fitting a plurality of models to the transient, selecting one of the plurality of models as a model for the transient, and defining the feature indicative of the transient based on at least one parameter of the model for the transient; and classifying the transient based on the feature.

Abstract: The present invention includes a calculating unit for calculating an absolute value of an applied commercial voltage, an accumulating unit for accumulating the absolute value of the applied commercial voltage per a constant period to output, an extracting unit for sampling an absolute value accumulative maximum value of the commercial voltage for each period and a determining unit for determining a quality of the commercial voltage by using the absolute value accumulative maximum value of the sampled commercial voltage. It has an advantage that the power quality can be monitored at high speed.

Abstract: Systems and methods for semiconductor device reliability qualification during semiconductor device design. A method is provided that includes defining performance process window bins for a performance window. The method further includes determining at least one failure mechanism for each bin assignment. The method further includes generating different reliability models when the at least one failure mechanism is a function of the process window, and generating common reliability models when the at least one failure mechanism is not the function of the process window. The method further includes identifying at least one risk factor for each bin assignment, and generating aggregate models using a manufacturing line distribution. The method further includes determining a fail rate by bin and optimizing a line center to minimize product fail rate. The method further includes determining a fail rate by bin and scrapping production as a function of a manufacturing line excursion event.

Abstract: An auxiliary drive circuit includes a first energy storage device coupled to a first DC bus and configured to output electrical power to the first DC bus, a first switch-mode power supply coupled to the first DC bus and to a second DC bus, the first switch-mode power supply configured to convert the electrical power to a first voltage and to output the first voltage to the second DC bus, and a second switch-mode power supply coupled to the second DC bus and coupled to an auxiliary bus, the second switch-mode power supply configured to convert the first voltage to a second voltage and to provide the second voltage to the auxiliary bus, the auxiliary bus configured to provide an auxiliary voltage to an auxiliary drive system, wherein the second voltage is different from the first voltage.

Abstract: A reactive power controller for controlling reactive power in a wind farm grid connected to a utility grid and including at least two sub-grids and a collector portion is provided. At least one wind turbine is connected to each sub-grid, wherein the at least two sub-grids are connected to the collector portion and wherein the collector portion establishes the connection to the utility grid. The reactive power controller includes a device for determining an actual reactive power value at the collector portion, and a wind farm controller operatively connected to the device for controlling at least one of said wind turbines on basis of the determined actual reactive power value such that a desired reactive power value is attained.

Abstract: A method for calculating efficiency of a power supply system includes: displaying a parameter selection interface on the display unit for selecting power supply parameters and transmission line parameters. Obtaining power supply parameters and transmission line parameters selected by the user via the parameter selection interface when determining the user has finished the selection. Determining a efficiency of a selected power supply of the power supply parameters according to the relationship table, and calculating a sum efficiency according to the obtained power supply parameters and the transmission line parameters and the efficiency of the selected power supply. And calculating a total efficiency of the power supply system according to each sum efficiency when determining that all of the power supplies of the power supply system have been selected.

Abstract: An electrostatic coating plant coats components with a coating agent that is electrically charged by high voltage device. A first operating variable of a high voltage device may be determined and compared to a limit value. A safety measure may be initiated if the comparison between the first operating variable and the limit value indicates a disturbance in the electrostatic coating plant. The limit value may be flexibly adjusted depending on the operation mode.

Abstract: A method and apparatus for estimating virtual machine energy consumption, and in particular, a method and apparatus for estimating virtual machine energy consumption in a computer system. The method includes: obtaining system energy consumption of the system hardware resources; obtaining event information of a plurality of functional units into which the system hardware resources are divided, and mapping the event information to the respective virtual machines; and calculating energy consumption of the virtual machines according to a plurality of energy consumption coefficients corresponding to the plurality of functional units and according to the event information mapped to the functional units of the respective virtual machines.

Abstract: Systems and methods are disclosed for providing a signal indicative of one or more types of individual measurable device characteristic/s that are unique to a given electronic device by providing a signal indicative of the measurable and unique device characteristic/s in a passive manner from the electronic device. The signal indicative of one or more types of individual measurable device characteristic/s may be so provided without requiring operational power to be applied to any active electronic circuitry of the device, and without requiring any power to be generated by the device.

Abstract: Systems and methods of the present invention are directed to disaggregating the contribution of solar panels from a whole house energy profile. Methods of disaggregating energy produced by solar panels from low frequency whole-house energy consumption data for a specific house, may include steps of: predicting solar energy generation for the specific house by estimating a solar capacity of the solar panels, predicting solar intensity associated with the specific house, and multiplying estimated solar capacity with predicted solar intensity; and subtracting the predicted solar energy generation from the low frequency whole house energy consumption data, thereby disaggregating the contribution of energy produced by the solar panels. Computerized systems of the same may apply machine learning models such as radial basis function, support vector, or neural network machines.

Abstract: Early power failure (EPF) detection circuit applies a rectified, unfiltered periodic waveform, at the frequency of the mains supply voltage to a threshold detector. During each cycle of the periodic waveform, the threshold detector produces a pulse voltage having a leading edge when the periodic waveform begins to exceed a threshold level associated with the threshold detector and a trailing edge when the periodic waveform ceases to exceed the threshold voltage. A microprocessor measures the length of the interval between the leading and trailing edges for indirectly measuring the magnitude (for example, RMS or peak) of the mains supply voltage. When the indirectly measured magnitude decreases below a minimum permissible, second threshold magnitude, a controlled power shutdown of the apparatus is initiated, such as by, for example, programs interrupt routine in the microprocessor.

Abstract: A portable device driven by a secondary battery which is chargeable and dischargeable, the portable device including a full charge detecting unit configured to detect full charge of the secondary battery in receipt of a report of the full charge and acquires capacity data indicative of a capacity of the secondary battery, a memory controlling unit configured to store the capacity data acquired by the full charge detecting unit in a memory unit, and a display control unit configured to cause a display unit of the portable device to display the capacity data stored by the memory controlling unit in chronological order.

Abstract: The present invention addresses the problem of avoiding that wind turbine voltage levels within a wind power plant do not exceed predetermined overvoltage and/or undervoltage protection levels. In particular, the present invention relates to shifting of an output voltage level of a wind power plant in order to protect an internal power plant grid against overvoltages.

Abstract: Aspects of the invention provide systems and methods for using ballast sensors to detect rock fall events in a vicinity of railway tracks or similar roadways or tracks. The ballast sensors are spaced apart from the tracks. Particular embodiments permit the use of signals from the ballast sensors to discriminate rock fall events from other types of events and to detect the hypocenter of a rock fall event.

Abstract: Power measurement by tracking of a voltage cycle when voltage and current measurements are taken at different locations on an AC power line, with the devices taking the measurements interconnected by an asynchronous data network. In general, a synchronization/timing message is sent from the voltage sensing side to the current sensing side, with the synchronization/timing message being transmitted at a predetermined point in the periodic voltage cycle. The receipt of the synchronization/timing message by the current sensing side may be used to re-synchronize an internal model of the voltage cycle maintained by the current sensing side to the measured voltage cycle. The predetermined point in the voltage cycle may be the zero-crossing point, or other point, of the voltage cycle.

Abstract: A method and a device are provided for ascertaining the time required to fully charging a battery of the device. The device ascertains the type of power supply being used when charging the device by ascertaining the time required to fully charge the device based on a historical charging speed and an empirical charging speed corresponding to the power supply's type. Using the method and device provided by the present disclosure can ascertain the required charging time with more accuracy.

Abstract: A process/method is provided, which facilitates achieving and obtaining realistic, accurate voltage observability of end customer service delivery points within the secondary distribution level using the alarming capability of intelligent data gathering and communication technology devices such as, but not necessarily limited to SCADA systems, distribution system RTU or SCADA, smart meters, smart gateways, and Advanced Metering Infrastructure (AMI) meters, or any device known in the art capable of sending alarm signals when voltage is detected above or below a predetermined threshold (generally herein defined as “Advanced Meters”). Such system and methods can be applied for many uses comprised of monitoring the energy grid, energy demand management and other energy industry applications, while minimizing operating and infrastructure/hardware costs.

Abstract: The invention relates to a method and apparatus for calculating the input current being drawn by a power converter. The power converter may be connected to and charging a battery and the method includes the steps of measuring the current and voltage being supplied to the battery, along with the frequency at which the power converter is operating. The voltage being supplied to the power converter may be calculated using a pre-determined relationship with the current and voltage being supplied to the power converter and the frequency of operation. The voltage being supplied to the converter may then be used to calculate the current being drawn by the converter.

Abstract: In an approach for detecting islanding effect in a power electrical network topology, a computer processor finds, in the power electrical network topology, a point of common coupling between a load and a distributed generation with potential islanding effect as well as a substation supplying power to said point of common coupling; collects operating parameters of the power grid in vicinity of said point of common coupling as well as in vicinity of said substation; determines whether islanding effect exists in said distributed generation and the load in accordance with a variation characteristic of the operating parameters of the power grid in vicinity of said point of common coupling and the operating parameters of the power grid in vicinity of said substation. Higher degree of accuracy and sensitivity of detecting islanding effect is achieved without compromising the energy quality on user side according to embodiments of the present invention.

Abstract: The present invention provides a system and computer program product for implementing a smart transformer, comprising a processor, and a balancing algorithm residing on the processor, wherein the balancing algorithm is stored on a non-transitory computer readable medium having computer executable program code embodied thereon, the computer executable program code configured to cause the system to monitor and control an electric customer load and generation in order to optimize the performance of a distribution transformer, wherein the processor receives a plurality of system inputs and uses the balancing algorithm to determine a rating of the transformer and an amount of customer load.

Abstract: Devices and methods for identifying an electrical device, and its state, in a network of electrical devices are disclosed. An energy monitoring device is programmed to identify an electrical device coupled to a power supply, and a state of the electrical device, from a change in successive measurements of the power supply. Algorithms for determining a load signature for an electrical device and its state are disclosed. A stored table of load signatures for states is used to identify devices, and states. Energy monitoring information is collected and presented to the user on a display, a remote display, or is transmitted over a network to a remote device such as a personal computer, personal digital assistant, an iPhone®, a cell phone, voice mail, email, or text message.

Abstract: A non-transitory computer readable storage medium for causing a computer monitoring a power distribution system in which a first customer and a second customer are mixed to execute a process, the process including: acquiring first data measured with a first measurement device which is installed in the first customer and measures the first data at a first time interval; acquiring second data measured with a second measurement device which is installed in the second customer and measures the second data at a second time interval longer than the first time interval; estimating data of the first time interval about an electric power of the second customer by using the acquired first data and the acquired second data; and estimating a value about a voltage or a current for each customer by using the estimated data of the first time interval and the acquired first data.

Abstract: An apparatus and method are disclosed for monitoring energy management efficiency of a data center. The apparatus includes an input unit, an energy management efficiency non-achievement rate calculation unit, and an average calculation unit. The input unit receives upper and lower limit target values for each of energy management efficiency measurement indicators. The energy management efficiency non-achievement rate calculation unit calculates the rate of non-achievement of energy management efficiency for each of the energy management efficiency measurement indicators based on an energy management efficiency measurement indicator value currently measured for each of the energy management efficiency measurement indicators and the upper and lower limit target values.

Abstract: A system to aggregate, filter, and share energy data for analysis receives first data associated with a first electrical circuit where the first data has a first protocol. The system samples the first data at a first sampling rate to generate first digital data where the first sampling rate is substantially continuous. Further, the system transmits at a reporting rate that is decoupled from the first sampling rate at least the first digital data over a network having a third protocol that is different from the first protocol. The network can be accessed by wired or wireless access and includes one or more servers in cloud configuration.

Abstract: A display is estimating every day working time of a worker involved in a load based on power consumption data in which electricity supplied to the load is measured in a certain period; calculating power consumption of the load during working time a day to calculate an average of the power consumption in a predetermined period; and calculating estimated daily power saving for every day based on a difference between maximum power during working time a day and power for each of the time, in which an index in which a proportion of the daily estimated power saving to a sum of the estimated electric saving and the power consumption serves as a parameter while a proportion of the power consumption a day to an average of the power consumption in a predetermined period serves as another parameter is displayed with the measured power consumption for each of the time.

Abstract: Disclosed is a method for design validity verification of an electronic circuit board with regard to power supply noise, wherein with regard to an i-th LSI (i=1 to n) on the electronic circuit board, an input voltage Vin[i] to the LSI from the printed circuit board is given by Vin[i]=VDD?Z1si[i]×VDD/(Z1si[i]+Z11[i]), where Z1si[i] is an input impedance characteristic and Z11[i] is a reflected impedance characteristic viewed from a position at which the i-th LSI is mounted, being a characteristic with the i-th LSI omitted from the whole of the electronic circuit board and a judgment is made as to whether or not a reflected voltage Vr[i]=Vin[i]×(Z1si[i]+Z11[i])/(Z1si[i]?Z11[i]) satisfies |Vr[i]|?? V (power supply variation tolerance range).

Abstract: A total energy quantity controlling device has a calculation data generating portion for defining, as calculation data, data for the amount of energy used for a processing energy type at a processing location for a processing month in a processing fiscal year, if this data is confirmed, or substitute data if this data for the amount of energy used is not confirmed; a substitute data determining portion for determining the substitute data; a data calculation processing portion for using the calculation data to calculate an aggregate value for the amount of energy used; a substitution rate calculating portion for calculating a substitution rate that is the use rate of the substitute data or the confirmed data within the aggregate value for the amount of energy used; and a displaying portion for displaying the aggregate value for the amount of energy used and the use rate.

Abstract: A system and method for managing power in a vehicle is provided herein. The vehicle includes a battery, an electric motor, and a plurality of electric devices. The electric motor is operable to drive the vehicle. The battery provides power to the electric motor and each of the electric devices. A first sensor is operable to detect the amount of power each of the electric devices is consuming and a display is operable to provide the power consumption for each of the electric devices and the battery power. Accordingly, the user is able to identify and manage how the battery's power is being distributed during the operation of the vehicle.

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 system for electric grid utilization and optimization comprising a communications interface executing on a network-connected server and adapted to receive information from a plurality of iNodes, the plurality of iNodes comprising a source iNode, a sink iNode, a plurality of transmission or distribution iNodes, an event database coupled to the communications interface and adapted to receive events from a plurality of iNodes via the communications interface, a modeling server coupled to the communications interface, and a statistics server coupled to the event database and the modeling server, wherein the modeling server, receives a request to establish an allocation of at least one of transmission losses, distribution losses, and ancillary services to a specific sink iNode, computes at least one virtual path for electricity flow between a source iNode and the specific sink iNode, the computed path being determined based on optimization of perceived comfort of users in affected areas.

Abstract: A method for monitoring solar power generation includes calculating a cable loss, calculating a maximum power point tracking loss, calculating an inverter loss, calculating a system output coefficient, performing comprehensive calculation based on a rated output power of a solar cell array, a temperature coefficient of the solar cell array, a numerical value of a voltage-current measuring device, a numerical value of a actinometer, a numerical value of a thermometer and a numerical value of a AC power meter such that a module temperature loss is calculated, performing comprehensive calculation based on the cable loss, the maximum power point tracking loss, the inverter loss, the system output coefficient and the module temperature loss such that a module loss is calculated, and displaying and monitoring the cable loss, the maximum power point tracking loss, the inverter loss, the module temperature loss and the module loss.

Abstract: An alternating current (AC) power flow analysis in an electrical power network. Based on information relating to buses and transmission lines connecting the buses in the electrical power network, a convex approximation of AC power flows in the electrical power network is determined. The convex approximation of the AC power flows comprises convex approximation of nonlinear cosine terms associated with active power components and reactive power components of the AC power flows. A convex objective function associated with the electrical power network is optimised using the convex approximation of the AC power flows.

Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broadband HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components representative of common mode electrical signals present in the measuring circuit.

Abstract: A measurement system, for use in RF power measurements, allows an arbitrary Bruene-type RF coupler to be calibrated at a number of different power levels and frequencies with an idealized transfer function being created for each calibration power point. Following calibration, when the coupler is used in an operational (measurement) mode, the DC voltage corresponding to the present power measurement is read, and the discrete idealized transfer functions generated during the power and frequency calibration phases are used to determine a best fit idealized transfer function, which is used in conjunction with the exact DC voltage being measured to create a highly accurate power measurement.

Abstract: A multi-dimensional energy control system is provided with an energy management software application that organizes the consumption of energy by a device as an n-dimensional energy space, where n is an integer greater than 2, and each axis in the energy space represents an energy consumption characteristic. The energy management application generates instructions for a device in response to calculating a compromise operating point in the energy space. A user interface (UI) connected to the energy management application has a display to receive a graphical representation of the energy space and compromise operating point, and an input to receive user commands for moving the represented compromise operating point in the represented energy space. The energy management application calculates the compromise operating point in the energy space to match the displayed compromise operating point.

Abstract: In one embodiment, a notification server 110 may batch together notifications to reduce power consumption. A notification server 110 may receive a power consumption profile 430 from a client device 120. The notification server 110 may assign a notification batch schedule at a notification server 110 based on the power consumption profile 430.

Abstract: An operation information output device includes: a power data acquirer that acquires time-series data of a physical quantity consumed or generated when production equipment executes a process; a single-cycle detector that detects time-series data of predetermined duration from the time-series data acquired by the power data acquirer, and an operation information acquirer that acquires operation information of the production equipment by use of the time-series data detected by the single-cycle detector, hence it becomes possible to easily calculate and determine detailed operation information.

Abstract: Aspects of the present invention provide a tool for simulating a motion control system that simulates performance and energy for a given configuration. The simulation analysis considers a motion profile and one or more corresponding performance parameters, and the resulting configuration provides hardware elements, such as drives and motors, and settings of those elements. The simulation allows optimization for energy efficiency, as opposed to only speed or accuracy.

Abstract: A power system grid is decomposed into several parts and decomposed state estimation steps are executed separately, on each part, using coordinated feedback regarding a boundary state. The achieved solution is the same that would be achieved with a simultaneous state estimation approach. With the disclosed approach, the state estimation problem can be distributed among decomposed estimation operations for each subsystem and a coordinating operation that yields the complete state estimate. The approach is particularly suited for estimating the state of power systems that are naturally decomposed into separate subsystems, such as separate AC and HVDC systems, and/or into separate transmission and distribution systems.

Abstract: A power system grid is decomposed into several parts and decomposed state estimation steps are executed separately, using Lagrangian relaxation and blockwise Gauss-Seidel solution. The achieved solution is the same that would be achieved with a simultaneous state estimation approach. With the disclosed approach, the state estimation problem can be distributed among decomposed estimation operations for each subsystem, where the decomposed estimation operations coordinate with one another to yield the complete state estimate. The approach is particularly suited for estimating the state of power systems that are naturally decomposed into separate subsystems, such as separate AC and HVDC systems, and/or separate transmission and distribution systems.

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: Methods, apparatus, and systems are provided for measuring the supply of a consumable product/energy source, such as electrical power, to a facility over time and analyzing the measurements to determine the consumption or supply of the product by one or more loads and/or sources in the facility, and to determine induced and residual heat flow through the facility's envelope. Various aspects compare the measured supply of the consumable product to a database of consumption signatures, which characterize access to the consumable product by particular users. In doing so, costs for the product may be more accurately divided between different tenants of the facility without having to install individual services or measurement equipment for each individual tenant. Operating conditions and facility characteristics, such as temperatures, load factors, insulation factors, etc., may be further considered in determining a particular user's access of the consumable product.

Abstract: A power management module electrically coupled between an AC/DC switching power supply and an electronic apparatus comprises a memory device, voltage and current detecting units, a writing unit, and an alarm signal generation unit. The memory device generates an output data to the electronic apparatus. The voltage and current detecting units detect voltages and currents of the output terminals of the switching power supply, respectively. The writing unit writes a new input data and the voltage and current data to the memory. The alarm signal generation unit generates an alarm signal to the electronic apparatus according to the data stored in the memory device and according to the operation condition of the switching power supply.