Abstract: A method for modeling an excitation system for a synchronous electrical power generator including: selecting a standard mathematical excitation system model from a plurality of standard excitation system models stored electronically; wherein the selected standard model is selected based on a similarity to the excitation system and can be an IEEE standard model; collecting data from the excitation system; determining parameter settings for the selected standard model using first pre-calculated and then collected (measured) data; verifying the selected standard model with tailored parameter settings by comparing an output of the model to a corresponding output of the excitation system; storing electronically the verified selected standard model with tailored settings; generating a report of the verified selected standard model with the tailored settings; performing rapidly and automatically model generation from a maintenance computer proximate to the excitation system; performing rapidly and automatically mode

Abstract: Systems and methods for energy monitoring and for providing the user with contextual information on the energy usage of a building area are disclosed. The methods may comprise performing an energy audit of a building and using the audit data and a building physics simulator to construct a computational model of the building's energy usage. An energy budget may be derived based on the computational model. The building's actual energy usage is reported with contextual information on energy usage from the computational model, the energy budget, historical data on energy usage, and other sources. The systems generally include energy monitoring hardware, a building physics simulator engine, and an interface. The interface may be implemented in hardware or software. The components of the system may be located in one building, or a central monitoring station with a building physics simulator engine may communicate with energy monitoring hardware in several buildings.

Abstract: Systems and methods are provided for collecting and aggregating a plurality of power flow measurements from a plurality of devices in a power management system. The error bounds of the aggregated power flow measurement are then determined using at least one error model. Systems and methods are also provided for inferring AC power flows from DC power flows. A device having at least one DC power flow sensor is augmented with at least one AC power flow sensor AC and DC power flows through the device are measured using the sensors over a range of operating points. An inference model of AC power flow in the device as a function of DC power flow is then built, wherein the error of the model is bounded. DC power flow through the device and in similar devices can then be then measured and used to infer AC power flow for the device.

Abstract: A method and apparatus for testing a photovoltaic substrate disposes the substrate on a support gantry with connection points such as vacuum cups. The gantry is actuated into a test position. A probe nest coupled to the gantry connects to a junction box on the substrate. A power supply applies voltage to the junction box, and an actuated frame contacts an edge region of the substrate to detect any breakthrough current. The actuated frame comprises a liner for maximizing contact with the edge of the substrate. The liner may be conductive, or may have a conductive surface. Current sensors coupled to the conductive liner of the frame detect any breakthrough current. A solar spectrum simulator provides solar spectrum radiation for testing the photovoltaic properties of the substrate.

Abstract: An improved method for analyzing power systems; in particular, power systems that may incorporate distributed energy resources (DER), that provides a thorough determination of the potential for network performance improvement that DER could provide, independent of non-network benefits DER could provide. The method incorporates an Energynet dataset simulating the power system, integrating transmission and distribution elements together and capable of evaluating the impacts of additions of real energy sources and/or reactive energy sources anywhere in the network. Such energy source additions are evaluated for their impact on a broad set of performance measures. The specific DER projects that would realize that potential improvement in network performance are characterized as an Optimal DER Portfolio. Network performance improvement attributable to the Optimal DER Portfolio is quantified in engineering and financial terms.

Abstract: One embodiment of the application provides a method and system for selecting a template characterizing a power plant from a template base, the template base including a plurality of templates and creating a power plant model of the power plant using the first template, the power plant model including a plurality of modules arranged in a hierarchical tree array having at least one tree branch, wherein each of the plurality of modules includes a plurality of attributes of the power plant that are arranged to be accessed by a data access layer using a tag name which includes names of ancestor modules in the tree branch. Additionally, the method and system also provides for mapping the plurality of attributes to specific applications of the power plant using the data access layer and configuring the power plant with the plurality of attributes using the data access layer.

Abstract: A system for providing real-time modeling of protective device in an electrical system under management is disclosed. The system includes a data acquisition component, a virtual system modeling engine, and an analytics engine. The data acquisition component is communicatively connected to a sensor configured to provide real-time measurements of data output from protective devices within the system under management. The virtual system modeling engine is configured to update a virtual mode of the system based on the status of the protective devices and to generate predicted data for the system using the updated virtual model. The analytics engine is communicatively connected to the data acquisition system and the virtual system modeling engine and is configured to monitor and analyze a difference between the real-time data output and the predicted data output. The analytics engine is also configured to determine the bracing capabilities for the protective devices.

Abstract: A system for real-time modeling of uninterruptible power supply (UPS) control elements protecting an electrical system is disclosed. The system includes a data acquisition component, a power analytics server and a client terminal. The data acquisition component acquires real-time data output from the electrical system. The power analytics server is comprised of a virtual system modeling engine, an analytics engine and a UPS transient stability simulation engine. The virtual system modeling engine generates predicted data output for the electrical system. The analytics engine monitors real-time data output and predicted data output of the electrical system. The UPS transient stability simulation engine stores and processes patterns observed from the real-time data output and utilizes a user-defined UPS control logic model to forecast an aspect of the interaction between UPS control elements and the electrical system subjected to a simulated contingency event.

Abstract: An integrated circuit chip has new Frequency dependent RLC extraction and modeling providing on chip integrity and noise verification and the extraction and modeling employs: A) 2D scan line algorithm for the collection of adjacent signal and power conductor coordinates; B) In core pair-wise frequency Dependent RL extraction; C) In core equivalent circuit synthesis; D) caching and partitioning RL extraction techniques for run time efficiency; and E) Techniques for synthesizing stable circuits to represent frequency dependent RL circuits for non-mono tonic R12.

Abstract: A system for making real-time predictions about an arc flash event on an electrical system is disclosed. The system includes a data acquisition component, an 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 analytics server is communicatively connected to the data acquisition component and is comprised of a virtual system modeling engine, an analytics engine and an arc flash simulation engine.

Abstract: A system for performing real-time failure mode analysis of a monitored system is disclosed. The system includes a data acquisition component, an 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 monitored system. The 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.

Abstract: A system is provided that allows the aggregation of a plurality of inputs from an electrical grid and the display of the plurality of inputs on a single integrated display for a network operator. The system accepts signals from electrical loads and generation devices and analyzes the inputs to determine potential issues or trends, including fault predictions and recommends contingency plans. The system presents these potential issues and possible corrective actions to the network operator. The network operator may initiate actions, such as dispatching loads or activating generation capacity for example, in response.

Abstract: In an embodiment, the present invention discloses methods and simulations for constructing a solar power plant meeting a criterion of either a desired power selling price or a capital investment. The present methods can provide design considerations for a solar power plant that is affordable and cost effective. For example, the present methods focus on a desired power selling price, to ensure the solar power plant provides competitive power as compared to existing oil, coal or nuclear based power plants. Alternatively, the present methods can focus on a desired capital investment for building a solar power plant. The construction plan and the solar technology are selected to achieve this price or investment consideration.

Abstract: The modelling arrangement of the configuration situation of the electric power transmission network according to the invention comprises a modelling element (7) designed to be installed in each generator of the electric power transmission network. The modelling element (7) is arranged to measure the state of the said switches until an open switch is detected and to detect the corresponding generator on the basis of the closed switch and thus to model the power transmission network comprising the detected generators and the area of the power transmission network belonging to the same electric network via closed switches.

Abstract: A circuit and a method for testing electrically controllable power switches for activating occupant protection means are proposed. A triggering element for the testing is simulated in that a resistance of this simulation is changed for each of the consecutive time blocks by activating the simulation.

Abstract: A battery characteristic simulating apparatus is provided for supplying electric power for simulating a battery characteristic of a battery to a battery-driven type electronic appliance. The battery characteristic simulating apparatus includes a voltage/current generating unit; a voltage/current measuring unit; a characteristic data acquiring unit; a storage unit; and a simulation signal producing unit that are provided within the same housing of the battery characteristic simulating apparatus.

Abstract: The operation of a power distribution network is modeled. At least one quality of the operation of the power distribution network is measured. The future operational performance of the power distribution network is predicted based at least in part upon the modeling. When the at least one measure of the quality of the operation of the power distribution network or the predicted future operational performance do not meet the predetermined performance criteria, corrective action is taken with respect to the power distribution network.

Abstract: Disclosed herein are an intelligent system and method for monitoring a generator reactive power limit using machine model parameters. The intelligent system and method for monitoring a generator reactive power limit using machine model parameters can calculate a maximum reactive power limit corresponding to over-excitation and a generator terminal voltage corresponding to under-excitation, estimate a correct field current even when system variable are changed, and monitor the generator reactive power limit by using machine model parameters and a one-machine infinite bus, to thereby supply a maximum or minimum reactive power to a power system within an allowable generator reactive power limit and prevent a generator trip caused by the reactive power limit and a power failure over a wide area.

Abstract: A method for distributed spectrum management of digital communication systems having a plurality of communication lines on which signals are transmitted and received by respective users, the method comprising the steps of: collecting information about line, signal and interference characteristics of a plurality of the communication lines from a plurality of sources; determining the line, signal and interference characteristics of a plurality of the communication lines; varying power allocation of particular plurality of the communication lines between respective transmitter and receiver taking into consideration the determined line, signal and interference characteristics of a plurality of the communication lines and consideration of a noise weight of a plurality of the communication lines to enable a minimum power on a plurality of the communication lines and to allow required effective data-rates for each of said respective users to be satisfied.

Abstract: A method for simulating an integrated circuit having a plurality of clock control modules includes simulating the integrated circuit, and automatically receiving from each clock control model during simulation an indication of a simulated power state of the clock control model. Accordingly, the simulated power state of the portion of the integrated circuit model to be clocked by a clock control model can be monitored based on the indicator from the clock control model, rather than on a higher level analysis of the simulated input/output behavior of the integrated circuit model.

Abstract: A conditioning device is described for power supply networks (2) having a network voltage measurement unit (3) which can be connected to a three-phase power supply network (2), having a computation unit (1) which is connected to the network voltage measurement unit (3) and is used to determine conditioning current values (K) and having an inverter unit (4) which is connected to the power supply network (2) and is used to feed in conditioning currents (IK) as a function of the determined conditioning current values (K). The computation unit (1) is designed for modeled simulation of a synchronous machine in order to determine at least one component of the conditioning current values (K) as stator currents of the simulated synchronous machine as a function of freely variable synchronous machine parameters, using the network voltages (UN), measured in three phases, of the power supply network (2) as input variables.

Abstract: A power management method is applicable to an electronic device having GPS navigation software and a GPS module for executing the navigation software. First, the data storage power (i.e. the RTC power) is enabled when the electronic device is powered on, and whether the electronic device receive an external power is detected; if yes, the master power (i.e. the RF power) is enabled and the GPS module is enabled to perform an initialization process and continue detecting whether the electronic device receives an external power; it no, the master power is disabled and detecting whether the electronic device receives an external power continues. Compared with the prior art, the power management method of the present invention, by managing powers installed in the electronic device and corresponding to the GPS module, increases the possibility for the navigation software to enter the hot start mode, and advances user's convenience.

Abstract: A method for configuring the physical model of a heat recovery steam generator that can estimate the state quantity of generated steam from the state quantity of the exhaust gas to be introduced, and capable of establishing the physical model of a combined cycle power generation facility thereby. The optimum values for the flow rates Flp and Fhp, pressures and temperatures Tlp and Thp of the low pressure main steam and high pressure main steam are computed in such a way as to ensure that an objective function E stored in advance will come close to zero.

Abstract: A method for a power grid configured to supply current to a plurality of elements of a circuit.

Abstract: A safety protection instrumentation system for a nuclear reactor is constructed by using digital logic. The digital logic includes functional units in which output logic patterns corresponding to all input logic patterns are verified in advance and a functional module formed by combining the functional units.

Abstract: In one embodiment, there is provided a method for a computer aiding a design of a power supply that includes extracting data of one of a plurality of power supplies of an apparatus from a product data about the apparatus, extracting data of a power supply system from a power supply system data, the power supply system is not allocated to any of the plurality of power supplies of the apparatus and associating the extracted data of the power supply with the extracted data of the power supply system in a power supply allocation result data.

Abstract: Various port reduction methods are employed to reduce the number of port definitions in a simulation file. A ground port reduction method is first employed to reduce certain power supply reference connections to an absolute ground reference for the circuit model. Next, all commonly defined port definitions are combined into a single port definition. Finally, a current analysis is used to further reduce the number of port definitions in the simulation file by removing the current return ports from the simulation file.

Abstract: A monitoring system using a real-time simulator, providing a simulation environment of a real electric power system that enables testing of a new electric power system control facility. The operation of the new electric power system control facility and effects thereof on a real electric power system can be evaluated before actual installation. The monitoring system includes a test piece installed in an electric power system; a simulator connected to the test piece, and deriving electric power system simulation data by simulating the electric power system with respect to the test piece; a multimedia interface (MMI) platform interworking with the simulator, providing the simulator with electric power system status data for simulating the electric power system, and receiving the electric power system simulation data from the simulator; and an MMI client interworking with the MMI platform to display the electric power system simulation data from the MMI platform.

Abstract: A simulation system includes a simulation computer having a Web server and a client computer with an Internet browser. On the simulation computer, a process engineering process model of a technical plant is available, to which access can be made by the client computer via the Internet. In preferred embodiments, the simulation computer additionally includes an automation engineering process model of the technical plant, operation and observation software and a project engineering tool for changing the aforementioned programs in the simulation computer.

Abstract: A system for delivering power to a device in a specified voltage range is disclosed. The system includes a power delivery network, characterized by a response function, to deliver power to the device. A current computation unit stores values representing a sequence of current amplitudes drawn by the device on successive clock cycles, and provides them to a current to voltage computation unit. The current to voltage computation unit filters the current amplitudes according to coefficients derived from the response function to provide an estimate of the voltage seen by the device. Operation of the device is adjusted if the estimated voltage falls outside the specified range.

Abstract: A system for making real-time predictions about an arc flash event on an electrical system is disclosed. The system includes a data acquisition component, an 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 analytics server is communicatively connected to the data acquisition component and is comprised of a virtual system modeling engine, an analytics engine and an arc flash simulation engine. The arc flash simulation engine is configured to utilize the virtual system model to forecast an aspect of the arc flash event.

Abstract: First hardware is for executing first software in response to macros that describe integrated circuitry, and for generating a set of constants in response to the execution of the first software. Second hardware is for receiving the set of constants from the first hardware, and for executing second software in response to the macros and the set of constants, and for estimating a power consumption of the integrated circuitry in response to the execution of the second software.

Abstract: A voltage regulation optimization (VRO) system receives inputs from a DCS or other distribution network control/monitoring system. The VRO then calculates optimized control commands for various network devices including the controllable taps of voltage regulating transformers.

Abstract: A method and apparatus for simulating the operation of a rechargeable battery. A value is obtained for at least one parameter that describes an internal state of the battery. The obtained value is used for calculating a prediction value for a characteristic of the battery that is observable outside the battery. These steps are repeated a multitude of times in order to simulate the operation of the battery over a certain period of time. A difference is detected between a calculated prediction value and a known value of a corresponding characteristic in a corresponding situation. The obtained value of the at least one parameter is corrected before a further prediction value is calculated by an amount that is proportional to the detected difference.

Abstract: The present invention takes place of solid oxide fuel cell (SOFC) in tests. Some tests among them are done to find ways to recycle exhausts of the SOFC. And, some other tests among them are done to evaluate benefits of re-burning the exhausts. All tests save cost and time.

Abstract: A system for filtering and interpreting real-time sensory data from an electrical system is disclosed. The system includes a data acquisition component, a power analytics server and a client terminal. The data acquisition component acquires real-time data output from the electrical system. The power analytics sewer is comprised of a virtual system modeling engine, an analytics engine, and a decision engine. The virtual system modeling engine generates predicted data output for the electrical system. The analytics engine monitors real-lime data output and predicted data output of the electrical system. The decision engine compares the real-time data output against the predicted data output to filter out and interpret indicia of electrical system health and performance. The client terminal is communicatively connected to the power analytics server and configured to display the filtered and interpreted indicia.

Abstract: A method is disclosed for estimating states of a power electronic system, the system having a converter circuit. An exemplary method includes varying a system state vector x(k) and a system state vector x(k+1) for each of sampling times k=?N+1 to k=0 in such a manner that a sum formed by an addition of a first vector norm obtained by subtracting a first system model function f(x(k), u(k)) from the system state vector x(k+1), and another vector norm obtained by subtracting a second system model function g(x(k), u(k)) from the output variable vector y(k), becomes minimal over the sampling times k=?N+1 to k=0. A desired system state vector x(k) at the sampling time k=0 can then be selected.

Abstract: Systems, methods, and program product to calculate global energy utility targets and to model and determine an optimal solution for a non-thermodynamically constrained process or cluster of processes subject to non-thermodynamic constraints under all possible process changes and streams specific minimum temperature approaches, are provided. An exemplary system can utilize thermodynamic constraints exhibited in stream-specific minimum temperature approach values ?Tmini as optimization parameters, in addition to other process conditions degrees of freedom including the addition of new waste heat carrier streams to target for minimizing energy consumption of the non-thermodynamic constrained waste heat recovery problem and to identify the optimal operating conditions that result in desired minimum energy consumption subject to the non-thermodynamic constraints.

Abstract: For solution of the problem of creating a possibility for a comprehensive computer simulation of a plant or machine, the invention proposes a method for the simulation of a plant or a machine by means of a computer, in particular a personal computer, which has at least two core processors, in which a simulation program for simulating at least one process of a plant or machine to be simulated is executed on at least one first core processor and a user program of a programmable logic controller for simulating a programmable logic controller of a plant or machine to be simulated is executed on at least one second core processor and, between the simulation program and the user program, input and output data are transmitted via a transparent channel. For carrying out the method, the method further proposes a computer system having at least two core processors.

Abstract: Systems, program product, and methods to optimize energy management for a site including a combined steam heat and electrical power system, is provided. A system, for example, can include a computer including memory, and energy utility modeling program product stored in the memory. The system can rigorously target, without manual iteration, for multiple utility commodity targets to include their global minimum and maximum requirements or capabilities, individually, or subject to other target objectives, due to varying process conditions. The system can also obtain the supply and demand best and worst case scenarios due to varying process conditions for a given process or cluster of processes. The system can also provide such data subject to other supply and demand objectives, and can further provide a range of commodity requirements or capabilities subject to user selected values for other commodity requirements or capabilities.

Abstract: A system for making real-time predictions about an arc flash event on an electrical system comprises a data acquisition component communicatively connected to a sensor configured to acquire real-time data output from the electrical system; an analytics server communicatively connected to the data acquisition component and comprising a virtual system modeling engine configured to generate predicted data output for the electrical system using a virtual system model of the electrical system, an analytics engine configured to monitor the real-time data output and the predicted data output of the electrical system, and an arc flash simulation engine configured to use the virtual system model updated based in the real-time data to forecast an aspect of the arc flash event.

Abstract: A power testing apparatus for a USB interface includes first and second USB interfaces, and a simulation apparatus. The simulation apparatus includes a first voltage regulator, first and second resistors, and a load resistor. The first USB interface is configured to connect to a circuit board. The second USB interface is configured to connect to a USB device. The first voltage regulator includes input, output, and adjusting terminals. The first resistor is connected between the output terminal and the adjusting terminal. The second resistor is connected between the adjusting terminal and ground. The load resistor is connected to the output terminal and ground. Signal pins of the first USB interface are connected to signal pins of the second USB interface. A voltage pin of the first USB interface is connected to a voltage pin of the second USB interface and the input terminal.

Abstract: A verification supporting apparatus includes a concept model generating unit, a function model verifying unit, a motion model verifying unit, and an ICA model verifying unit. The concept model generating unit generates a concept model aiming at a requirement specification of a customer to eliminate an error or misunderstanding of the specification at the initial stage of design. The function model verifying unit verifies a concurrent and parallel function model, to verify appropriateness of function module division and correctness of concurrence and parallelism. The motion model verifying unit verifies a motion model, to verify whether the design of architecture is appropriate and whether performance requirements are satisfied. The ICA model verifying unit verifies correctness of interface design.

Abstract: A pin-based memory power modeling method using arc-based characterization includes steps as follows. All power arcs of a memory model are identified and characterized. A power arc is selected from the identified and characterized power arcs. Output bus switching power is computed by removing overlapping power using the selected power arc, and a temporary value for various input ramp times and output loads is derived. Output pin power for the selected power arc is calculated using the temporary value and a ratio of a number of output bits switching over an entire bus width. Switching power for the selected power arc is calculated by a power estimation tool based on port activity and an input intrinsic power value.

Abstract: A multiple application automated test set (MAATS) system can simulate the operation of a power plant. To simulate the operation of the power plant, the MAATS system can be configured to “stand in” for the power plant by receiving the control signals from a controller and by generating electrical signals, readable by the controller, that represent the operating parameters and conditions of the power plant.

Abstract: A computer-implemented method for the design of a power supply is disclosed. Multiple lists of power supply design variables are provided. The method includes simulating a first power supply design in response to power supply design variables selected from these multiple lists of variables. The method then calculates a score of the first power supply design and determines whether the score is better than the score of any power supply design included in a set of power supply designs. If so, the method replaces a power supply design having a worst score from the set of power supply designs with the first power supply design.

Abstract: An IBIS correction tool which can be used assembled in a waveform simulation device and corrects IBIS data for a certain specific power supply voltage V0 to IBIS data for a desired power supply voltage V1 with a higher precision than the past, that is, an IBIS correction tool configured so as to read IBIS data for a power supply voltage V0 as numerical data of x-y coordinates at a data input unit, find a relative ratio (correction coefficient) between this numerical data and numerical data for a power supply voltage V1 on its x-y coordinates at a correction coefficient calculating unit, and obtain corrected IBIS data corrected for the power supply voltage V1 according to that correction coefficient at a corrected IBIS data generating unit.

Abstract: A method for determining wind turbine location within a wind power plant based on at least one design criteria. A wind turbine layout including at least one wind turbine location is prepared and site conditions at each wind turbine location are determined. One or more plant design metrics are evaluated in response to the site conditions. The plant design metrics are analyzed in response to the site conditions. The method further includes applying constraints to the wind turbine layout and comparing the plant design metrics to the design criteria and constraints. Thereafter, the wind turbine locations are selectively adjusted within the layout in response to the comparing step until a stop criteria is reached.

Abstract: Full-AC load flow constitutes a core computation in power system analysis. The present invention provides a performance gain with a hardware implementation of a sparse-linear solver using a Field Programmable Gate Array (FPGA). The invention also relates to the design, simulation, and hardware verification of a static transmission line model for analog power flow computation. Operational transconductance amplifiers are employed in the model based on a previously proposed DC emulation technique of power flow computation, and provide reconfigurability of transmission line parameters via transconductance gain. The invention also uses Analog Behavioral Models (ABMs) in an efficient strategy for designing analog emulation engines for large-scale power system computation. Results of PSpice simulations of these emulation circuits are compared with industrial grade numerical simulations for validation.

Abstract: An upgradeable test set is that includes a stimulator circuit to transmit test signals to an electrical equipment under test, a coupling to removeably couple at least the stimulator circuit to one of a plurality of front-end interfaces. The plurality of front-end interfaces include a first front-end interface having a first display and a first input device and a second front-end interface having a second display and a second input device. The first display and the second display have different display characteristics, and the first input device and the second input device have different characteristics. The one of the front-end interfaces communicates a test control parameter to the stimulator circuit and a response of the electrical equipment under test is communicated to the one of the front-end interfaces. The case is configured to enclose the stimulator circuit, the one of the front-end interfaces, and the coupling.