Power System Patents (Class 703/18)
  • Patent number: 10108764
    Abstract: A method of estimating power consumption for a system on chip (SOC) includes simulating operation of a first sub-block to obtain power consumption information for the first sub-block including first activation information for a first IP block. The method further includes simulating operation of a second sub-block to obtain power consumption information for the second sub-block including second activation information for the first IP block and activation information for a plurality of second IP blocks. The method further includes determining a weighting factor for the first activation information for the first IP block, the second activation information for the first IP block and the activation information for each second IP block. The method further includes estimating power consumption for the SOC based on the first and second activation information for the first IP block, the activation information for at least one second IP block, and corresponding weighting factors.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: October 23, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Shereef Shehata, Sandeep Kumar Goel, Tze-Chiang Huang, Yun-Han Lee, Mei Wong
  • Patent number: 10073479
    Abstract: A power management apparatus includes an electric device including a plurality of operation algorithm information and power information for each operation level corresponding to each operation algorithm information, and a power management unit to receive power rate information from a power provider, determine an operation level of the electric device on the basis of the received power rate information and power information for each operation level of the electric device, and control an operation of the electric device at the determined operation level. As a result, the power management apparatus performs different operation algorithms according to power rate information, and controls power consumption of the electric device, such that energy efficiency at the user side can be maximized. In response to the changed power rate information, the currently-driven electric device and the electric device to be driven can be driven at the optimum operation level appropriate for their power consumption characteristics.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Hwi Jang, Jong Hyun Shin, Hyun Soo Park, Young Jin Park
  • Patent number: 10067038
    Abstract: A method and system for analyzing equipment degradation for maintaining the equipment are provided. The method and system receive and store equipment and sensor data associated with operational equipment, generate a display signal to display a relationship analysis window, a residual error window, a performance condition window, and a maintenance trigger window, and evaluate a coordinated relationship between the equipment sensor data and the environmental data, determine residual errors and determine a Historical Health Condition Index (HHCI) for the operational equipment and generate a Future Health Condition Index (FHCI) from the HHCI, and generate an equipment maintenance trigger for the operational equipment by establishing a trigger threshold for maintenance.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: September 4, 2018
    Assignee: Accenture Global Services Limited
    Inventors: Fang Hou, Yan Gao, Xiaopei Cheng
  • Patent number: 9997914
    Abstract: Distributed energy resources are validated by dispatching a distributed energy resources individually in known ambient conditions and monitoring the particular effect of dispatch to then establish a database of performance for multiple different distributed energy resources. The distributed energy resources can be permanently monitored to further build up this database and to verify that the distributed energy resource is performing consistent with its validation or other expected performance. Distributed energy resources of a slow responding variety and a fast responding variety can be paired together and dispatched together, so that the paired fast responding and slow responding distributed energy resources mimic a large fast responding distributed energy resource. The benefits of a high capacity fast responding distributed energy resource is thus provided, such as for the load shedding and grid support benefits thereof.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 12, 2018
    Assignee: Negawatt Assets, LLC
    Inventors: Michael S. Day, Calvin R. Wylie
  • Patent number: 9953117
    Abstract: A method for solving a two-stage non-linear stochastic formulation for the economic dispatch problem under renewable-generation uncertainty. Certain generation decisions are made only in the first stage and fixed for the subsequent (second) stage, where the actual renewable generation is realized. The uncertainty in renewable output is captured by a finite number of scenarios. Any resulting supply-demand mis-match must then be alleviated using high marginal-cost power sources that can be tapped in short time frames. The solution implements two outer approximation algorithms to solve this nonconvex optimization problem to optimality including the application of a decomposition approach derived from the Alternating Direction Method of Multipliers (ADMM) algorithm.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: April 24, 2018
    Inventors: Soumyadip Ghosh, Dung T. Phan
  • Patent number: 9921602
    Abstract: In steady-state voltage stability analysis, as load increases toward a maximum, conventional Newton-Raphson power flow Jacobian matrix becomes increasingly ill-conditioned so power flow fails to converge before reaching maximum loading. A method to directly eliminate this singularity reformulates the power flow problem by introducing an AQ bus with specified bus angle and reactive power consumption of a load bus. For steady-state voltage stability analysis, the angle separation between the swing bus and AQ bus can be varied to control power transfer to the load, rather than specifying the load power itself. For an AQ bus, the power flow formulation is only made up of a reactive power equation, thus reducing the size of the Jacobian matrix by one. This reduced Jacobian matrix is nonsingular at the critical voltage point, eliminating a major difficulty in voltage stability analysis for power system operations.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: March 20, 2018
    Assignee: RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Joe Hong Chow, Scott Gordon Ghiocel
  • Patent number: 9866063
    Abstract: Fault-tolerant power distribution systems for modular power plants are discussed. The systems enable the transmission of a portion of the power generated by a modular power plant to remote consumers. The systems also enable the local distribution of another portion of the generated power within the power plant. The various fault-tolerant systems enable the plant to continuously, and without degradation or disruption, transmit power to remote consumers and distribute power within in the power plant in the event of one or more faults within the distribution system. The various embodiments include redundant power-transmission paths, power-distribution module feeds, switchgear, and other hardware components.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: January 9, 2018
    Assignee: NUSCALE POWER, LLC
    Inventor: Ted Hough
  • Patent number: 9787506
    Abstract: An equalization circuit may include a buffer configured to sense an input signal according to a reference voltage. The equalization circuit may include a reference voltage generator configured to generate the reference voltage. The reference voltage may be changed in conformity with noise of the input signal.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: October 10, 2017
    Assignee: SK hynix Inc.
    Inventors: Kwan Su Shon, Yo Han Jeong
  • Patent number: 9760866
    Abstract: Systems and methods to provide server side profile information. An LDAP server is provisioned for each user of a plurality of users. Profile information is received. The profile information is stored in a database associated with the LDAP server. Via the LDAP server, a suggestion from the profile information is provided in response to a partial entry provided by the user to a first client associated with the user.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: September 12, 2017
    Assignee: YAHOO HOLDINGS, INC.
    Inventors: Dennis Quintela, Frank J. Cort
  • Patent number: 9625929
    Abstract: A method for obtaining a three-phase power flow of a power distribution network and a device for obtaining a three-phase power flow of a power distribution network are provided. The method includes steps of: selecting a three-phase power transformer in the power distribution network and configuring a secondary side of the three-phase power transformer with an ungrounded neutral connection, such that the three-phase power transformer satisfies a preset voltage-current relationship; adding a constraint condition to the preset voltage-current relationship to correct a three-phase admittance matrix of the three-phase power transformer; and applying the three-phase admittance matrix to a preset algorithm to obtain a three-phase power flow of the power distribution network.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: April 18, 2017
    Assignees: Tsinghua University, Guizhou Power Grid Information & Telecommunication Co., Ltd.
    Inventors: Wenchuan Wu, Boming Zhang, Qing Zou, Hongbin Sun, Fei Li, Qinglai Guo, Yi Liu, Yajing Gao, Hongjia Miao, Yuan Ji
  • Patent number: 9618988
    Abstract: A method of managing a thermal budget, for at least a part of a processing system, is described. The method comprises, upon detection of a use case event, determining a thermal budget violation time window for a current use case scenario of the at least part of the processing system, and managing the thermal budget for the at least part of the processing system based at least partly on the determined thermal budget violation time window.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: April 11, 2017
    Assignee: NXP USA, INC.
    Inventors: Anton Rozen, Roy Drucker, Leonid Smolyansky
  • Patent number: 9582067
    Abstract: An information processing apparatus includes an application program; a power control unit configured to switch power modes so as to control ON/OFF of power supply to each piece of hardware; and a function execution unit configured to execute control of a specified function based on an instruction from the application program. The function execution unit is configured to inquire at the power control unit for the power modes in response to an instruction from the application program. The power control unit is configured to return a power mode to the function execution unit. The function execution unit is configured to notify the power control unit of a recovery request for powering ON the hardware that has been powered OFF in the power mode not supported.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: February 28, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kohichi Hirai
  • Patent number: 9501135
    Abstract: Dynamically switching cores on a heterogeneous multi-core processing system may be performed by executing program code on a first processing core. Power up of a second processing core may be signaled. A first performance metric of the first processing core executing the program code may be collected. When the first performance metric is better than a previously determined core performance metric, power down of the second processing core may be signaled and execution of the program code may be continued on the first processing core. When the first performance metric is not better than the previously determined core performance metric, execution of the program code may be switched from the first processing core to the second processing core.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: November 22, 2016
    Assignee: Intel Corporation
    Inventors: Youfeng Wu, Shiliang Hu, Edson Borin, Cheng Wang
  • Patent number: 9488682
    Abstract: A method determines power consumption of a load in a feeder section of an ungrounded power distribution system. Borders of the feeder section are defined by an importing device connecting the feeder section to an upstream feeder section, and by at least one exporting device connecting the feeder section with a downstream feeder section. A power consumption of each load is represented as a product of a scaling factor and a base power defined by a load profile of the load. A power flow of the feeder section is solved using the power consumptions of the loads to produce an active power for each phase of the importing device. A target active power for each phase of the importing device is determined using measurements at the importing device, and the scaling factors are updated based on a difference between the active power and the target active power.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: November 8, 2016
    Assignee: MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC.
    Inventor: Hongbo Sun
  • Patent number: 9484738
    Abstract: A method and system are provided for operation of substations in which protection, control and measurement devices (e.g., Intelligent Electronic Devices (IEDs)) exchange operational data over a data network, for example, according to IEC standard 61850. During maintenance, commissioning and fault situations, when one or several IEDs are inoperable, the data that these IEDs would have produced is substituted to ensure availability of the substation. To this effect, a dedicated substitute device is permanently installed that can take the role of any IED, and that is automatically configured out of a standard configuration description (SCD) file that describes the SA system.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: November 1, 2016
    Assignee: ABB Research Ltd.
    Inventors: Hubert Kirrmann, Michael Obrist
  • Patent number: 9465904
    Abstract: This invention is a signal input/output design tool for integrated circuit input/output design. The connectivity capacity of at least multiplexer connecting internal signals and external lines is expressed as a first set of Boolean expressions. The desired connectivity between internal signals and external lines is expressed is provided by a designer. A programmed general purpose computer expresses the desired connectivity as a second set of Boolean expressions and determines whether said first set of Boolean expressions and said second set of Boolean expressions are Boolean satisfiable. If satisfiable, the design tool generates control signals to configure the at least one multiplexer to achieve the desired connectivity. If not satisfiable, the design tool generates a report indicating which portions of the desired connectivity are achievable and which are not.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: October 11, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Darian Robert Peter Sale, Mandeep Singh Deol, Paul Ian Strathdee Marshall, Paul Arthur Gingrich, Shing Fu Pang, Victor Xi Yang, Andrew Edward Waterson, Steven Derrick Clynes
  • Patent number: 9460636
    Abstract: A power frequency parameter simulation system for a power transmission line and a control method thereof, the system includes a simulation main circuit (1), an interference power supply (2) and a procedure controller (3). In the system, a power frequency parameter of a 10 to 100 kilometers of 500 kV power transmission line is simulated in a lumped parameter manner; and the control method includes the following steps of: a step to detect the automatically zeroing during starting up, a step to control the reduction of the length of a simulation line and a step to control a simulation interference voltage. A long-distance power transmission line is realized to be moved into a room and be tested by means of the power frequency parameter test system, so the various inconveniences of on-site measurement are avoided.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: October 4, 2016
    Assignees: ANHUI ELECTRIC POWER RESEARCH INSTITUTE, SUZHOU HD ELECTRIC CO., LTD., STATE GRID CORPORATION OF CHINA (SGCC)
    Inventors: Zhong Fu, Jiantao Ye, Daowen Yang, Zinian Chen, Wei Li, Dengfeng Cheng, Yongkang Huang, Jingjing Dong, Wenhui Tong, Cuicui Wang
  • Patent number: 9423859
    Abstract: Embodiments relate to storing data in memory. An aspect includes applying a power savings technique to at least a subset of a processor. Pending work items scheduled to be executed by the processor are monitored. The pending work items are grouped based on the power savings technique. The grouping includes delaying a scheduled execution time of at least one of the pending work items to increase an overall number of clock cycles that the power savings technique is applied to the processor. It is determined that an execution criteria has been met. The pending work items are executed based on the execution criteria being met and the grouping.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: August 23, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Pradip Bose, Alper Buyuktosunoglu, Hans M. Jacobson, Augusto J. Vega
  • Patent number: 9385897
    Abstract: Methods and apparatus are provided for adapting transmitter equalization coefficients based on receiver gain adaptation. Equalization coefficients of a transmitter that communicates over a channel with a receiver are adapted by determining if a gain value for an amplifier in the receiver is within a limit of the amplifier; and preventing one or more adjustments to the transmitter equalization coefficients if the gain value does not satisfy the upper or lower limit of the amplifier. The gain adjustments comprise, for example, up and down requests for the transmitter equalization coefficients. One or more enable flags can optionally be set based on whether the gain value is within the limit of the amplifier.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: July 5, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Vladimir Sindalovsky, Mohammad S. Mobin, Lane A. Smith
  • Patent number: 9352748
    Abstract: A system to optimize performance of a powered system, the system including a data device configured to provide current information about current operating conditions of the powered system and/or prior information about the powered system, a controller configured to control operation of the powered system, and a processor configured to provide at least one control command to the controller for use in operating the powered system and/or user information with at least one recommended command to a user to control the powered system, wherein the at least one control command and/or user information are based at least in part on the current information and/or the prior information. A system and computer software code, stored on a computer readable media and executable with a processor, are also disclosed.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: May 31, 2016
    Assignee: General Electric Company
    Inventors: Henry Todd Young, Ajith Kuttannair Kumar, Bret Dwayne Worden, Bertrand Bastien, Timothy Warren Brown
  • Patent number: 9342136
    Abstract: Embodiments of the present inventive concept relate to systems and methods for dynamically allocating and/or redistributing thermal budget to each processor from a total processor thermal budget based on the workload of each processor. In this manner, the processor(s) having a higher workload can receive a higher thermal budget. The allocation can be dynamically adjusted over time. The individual and overall processor performance increases while efficiently allocating the total thermal budget. By dynamically sharing the total thermal budget of the system, the performance of the system as a whole is increased, thereby lowering, for example, the total cost of ownership (TCO) of datacenters.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: May 17, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhan Ping, Robert Brennan, Jason Martineau
  • Patent number: 9342637
    Abstract: A performance value DB stores multiple states of parts comprising a system, and the consumed power of parts in those states. In addition, a condition DB stores conditions when the states of the parts change. A calculator generates state sequences in which the states are arrayed in the order of change in accordance with conditions stored in the condition DB, when information indicating the states of the parts is not communicated. The calculator computes the percentage of the time the parts are in each state per unit time for each state comprising this state sequence. Furthermore, the calculator finds the products of the computed ratios and the consumed power stored in the performance value DB for each state comprising the state sequence, and estimates the sum of the products found as the consumed power of the part.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 17, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Mori, Hiroaki Sakai, Yoshinari Sugegaya
  • Patent number: 9337662
    Abstract: Techniques are disclosed for performing the estimation and/or prediction of the dynamic system state of large power system networks, using a multi-processor approach. More particularly, a large power system network is divided into smaller sub-systems, each sub-system having associated dynamic state variables. Each sub-system is assigned to one or more of a plurality of processing elements, and dynamic state variables for each sub-system are estimated or predicted independently, using the processing elements and sensor measurements. In several embodiments, the dynamic state of each sub-system is computed through the construction of a set of dedicated observers, such as linear parameter-varying (LPV) observers, which are designed to reduce the effects of other sub-systems on the state estimation problem.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 10, 2016
    Assignee: ABB Technology AG
    Inventors: Ernst Scholtz, Vaibhav D. Donde, Jean-Charles Tournier
  • Patent number: 9335747
    Abstract: Embodiments of the present invention assist customers in managing the four types of energy assets, that is, generation, storage, usage, and controllable load assets. Embodiments of the present invention for the first time develop and predict a customer baseline (“CBL”) usage of electricity, using a predictive model based on simulation of energy assets, based on business as usual (“BAU”) of the customer's facility. The customer is provided with options for operating schedules based on algorithms, which allow the customer to maximize the economic return on its generation assets, its storage assets, and its load control assets. Embodiments of the invention enable the grid to verify that the customer has taken action to control load in response to price. This embodiment of the invention calculates the amount of energy that the customer would have consumed, absent any reduction of use made in response to price.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: May 10, 2016
    Assignee: VIRIDITY ENERGY, INC.
    Inventors: Alain P. Steven, Audrey A. Zibelman
  • Patent number: 9329670
    Abstract: A mechanism is provided for estimating energy/power consumption of a fixed-frequency operating mode while system is running in dynamic power management mode. For each time interval in a plurality of time intervals within a time period: a first processor identifies a modeled total nominal power value for at least one second processor during a current time interval, stores the modeled total nominal power value for the current time interval in a storage, identifies a dynamic power management mode power value for the at least one second processor in the data processing system during the current interval, and stores the dynamic power management mode power value for the current time interval in the storage. Responsive to the time period expiring, a comparison is produced of a plurality of modeled total nominal power values and a plurality of dynamic power management mode power values over the time period.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: May 3, 2016
    Assignee: International Business Machines Corporation
    Inventors: Malcolm S. Allen-Ware, Wei Huang, Fadi M. Kassem, Karthick Rajamani, Todd J. Rosedahl, Guillermo J. Silva
  • Patent number: 9321972
    Abstract: Systems and methods of hydrotreating different naphtha feed stocks destined for a refining reforming unit and other applications with less energy consumption than conventionally possible, while producing less greenhouse gas emissions, and/or using a lesser number of heaters and correspondingly less capital investment in such heaters, air coolers, and water coolers, are provided. According to the more examples of such systems and methods, such reductions are accomplished by directly integrating a naphtha stripping process section with a naphtha splitting process section. Additional reductions can also be accomplished through directly integrating a naphtha hydrotreat reaction process section with the naphtha stripping process section.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: April 26, 2016
    Assignee: Saudi Arabian Oil Company
    Inventors: Mahmoud Bahy Noureldin, Ahmed Saleh Bunaiyan
  • Patent number: 9310432
    Abstract: On-die measurement of power distribution impedance frequency profile of a programmable logic device (PLD), such as field programmable gate array (FPGA) or complex programmable logic device (CPLD), is performed by configuring and using only logic blocks resources commonly available in any existing programmable logic device, without the need of built-in dedicated circuits. All measurements are done inside the programmable logic device without the need of external instruments. The measurement method can be used during characterization to select decoupling capacitors or for troubleshooting existing systems, after which the programmable logic device may be reconfigured to perform any other user-defined function.
    Type: Grant
    Filed: May 6, 2012
    Date of Patent: April 12, 2016
    Inventor: Cosmin Iorga
  • Patent number: 9300134
    Abstract: In at least some embodiments, a computer system includes a processor and a storage device coupled to the processor. The storage device stores a program that, when executed, causes the processor to simulate restoration of a power grid system and to generate a restoration plan for the power grid system based on the simulation.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: March 29, 2016
    Assignee: ELEON ENERGY, INC.
    Inventors: Chenxi Lin, Xiaosong Yang
  • Patent number: 9164499
    Abstract: A static security constrained automatic voltage control method is provided, which includes: performing a single automatic voltage control calculation for a control snapshot of a power system in each control cycle. The single automatic voltage control calculation comprises: obtaining a single-time severe contingency sequencing table and a periodical severe contingency sequencing table from a historical severe contingency information database, and selecting severe contingencies; performing a contingency assessment for the active contingency set, and iterating between a result of the contingency assessment for the active contingency set and a solution of the optimal power flow model to obtain a single automatic voltage control instruction; and performing a contingency assessment for a contingency set, and updating the single-time severe contingency sequencing table and the periodical severe contingency sequencing table according to a comprehensive result of the contingency assessment.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: October 20, 2015
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Hongbin Sun, Qinglai Guo, Boming Zhang, Wenchuan Wu, Bin Wang, Mingye Zhang
  • Patent number: 9111221
    Abstract: Techniques can relate to generating inferences based on network devices' measuring of environmental data points and generating notifications or controlling devices based on the inferences. One or more environmental data points can be accessed. Each environmental data point in the one or more environmental data points can include one measured by a detector device and that characterizes a corresponding environmental stimulus. At least one of the environmental data points can be indicative of a light intensity or power usage measured by a first device. An inference can be generated based on the one or more environmental data points. A notification or device control can be identified based on the inference. A communication can be generated and transmitted to a second device. Receipt of the communication can cause the second device to present the notification or to be controlled in accordance with the device control.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: August 18, 2015
    Assignee: Belkin International, Inc.
    Inventors: Francis Michael Kelly, Ryan Yong Kim
  • Patent number: 9098656
    Abstract: In the event of modifying analysis condition, after the simulation of a first time step carried out when the analysis condition is modified finishes and before the simulation of a second time step next after the first step starts, the modified analysis condition is referred and the simulation based on the modified analysis condition is carried out in the next time step.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 4, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Sachio Kobayashi, Yuichi Sato, Hiroki Kobayashi, Hideki Abe, Masayoshi Hashima
  • Publication number: 20150149143
    Abstract: According to one aspect, an apparatus for computing a solution to a power flow problem for an electrical power system comprising a plurality of buses.
    Type: Application
    Filed: December 9, 2014
    Publication date: May 28, 2015
    Inventors: Oliver Romaniuk, Aden Seaman
  • Publication number: 20150142411
    Abstract: The generation of a nuclear core loading distribution includes receiving a reactor core parameter distribution associated with a state of a reference nuclear reactor core, generating an initial fuel loading distribution for a simulated beginning-of-cycle (BOC) nuclear reactor core, selecting an initial set of positions for a set of regions within the simulated BOC core, generating an initial set of fuel design parameter values utilizing a design variable of each of the regions, calculating a reactor core parameter distribution of the simulated BOC core utilizing the generated initial set of fuel design parameter values associated with the set of regions located at the initial set of positions of the simulated BOC core and generating a loading distribution by performing a perturbation process on the set of regions of the simulated BOC core to determine a subsequent set of positions for the set of regions within the simulated BOC core.
    Type: Application
    Filed: November 21, 2013
    Publication date: May 21, 2015
    Inventor: Nicholas W. Touran
  • Publication number: 20150142413
    Abstract: The generation of a nuclear core loading distribution includes receiving a reactor core parameter distribution associated with a state of a reference nuclear reactor core, generating an initial fuel loading distribution for a simulated beginning-of-cycle (BOC) nuclear reactor core, selecting an initial set of positions for a set of regions within the simulated BOC core, generating an initial set of fuel design parameter values utilizing a design variable of each of the regions, calculating a reactor core parameter distribution of the simulated BOC core utilizing the generated initial set of fuel design parameter values associated with the set of regions located at the initial set of positions of the simulated BOC core and generating a loading distribution by performing a perturbation process on the set of regions of the simulated BOC core to determine a subsequent set of positions for the set of regions within the simulated BOC core.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 21, 2015
    Inventor: Nicholas W. Touran
  • Publication number: 20150142412
    Abstract: The generation of a nuclear core loading distribution includes receiving a reactor core parameter distribution associated with a state of a reference nuclear reactor core, generating an initial fuel loading distribution for a simulated beginning-of-cycle (BOC) nuclear reactor core, selecting an initial set of positions for a set of regions within the simulated BOC core, generating an initial set of fuel design parameter values utilizing a design variable of each of the regions, calculating a reactor core parameter distribution of the simulated BOC core utilizing the generated initial set of fuel design parameter values associated with the set of regions located at the initial set of positions of the simulated BOC core and generating a loading distribution by performing a perturbation process on the set of regions of the simulated BOC core to determine a subsequent set of positions for the set of regions within the simulated BOC core.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 21, 2015
    Inventor: Nicholas W. Touran
  • Patent number: 9031707
    Abstract: An energy management system in a smart grid environment includes: an electrical power producing apparatus for collecting and analyzing real time price information and electrical power production environment information inputted through a communication network interface to thereby determine a control of an electrical power production; a micro grid, connected to the electrical power producing apparatus, for supplying an electrical power in a local micro grid environment; an electrical power grid, connected to the micro grid, for supplying a main power; and an energy routing service apparatus for transmitting an electrical power and processing an energy information packet for a control of an electrical power flow.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: May 12, 2015
    Assignees: Electronics and Telecommunications Research Institute, KT Corporation
    Inventors: Wan Ki Park, Il Woo Lee, Chang-Sic Choi
  • Patent number: 9031824
    Abstract: A system for intelligent monitoring and management 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 acquires real-time data output from the electrical system. The power analytics server is comprised of a real-time energy pricing engine, virtual system modeling engine, an analytics engine, a machine learning engine and a schematic user interface creator engine. The real-time energy pricing engine generates real-time utility power pricing data. 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 machine learning engine stores acid processes patterns observed from the real-time data output and the predicted data output to forecast an aspect of the electrical system.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: May 12, 2015
    Assignee: Power Analytics Corporation
    Inventor: Adib Nasle
  • Patent number: 9026411
    Abstract: Systems and methods are disclosed for availability evaluation of microgrid systems with an energy storage device by applying a Markov chain model to model charging and discharging processes in the energy storage device; determining an effect of the energy storage device connected to a microgrid with multiple energy sources and loads; and determining effect of system architectures on the availability of microgrids using minimum cut sets (MCS).
    Type: Grant
    Filed: July 7, 2012
    Date of Patent: May 5, 2015
    Assignee: NEC Laboratories America, Inc.
    Inventors: Mohammad Chehreghani Bozchalui, Ratnesh Sharma
  • Publication number: 20150120270
    Abstract: Disclosed are an apparatus and method for automating a smart grid interoperability test and verification. It is possible to allow a tester to easily establish a test environment needed to test a CIM interoperability by providing a function that allows a tester to directly set and create a test node, a CIM test sequence, and a test sequence metadata, and it is also possible to reduce time and cost taken to test and verify the CIM interoperability by automatically compare and analyze a CIM message monitored in an actual test process with CIM message metadata set in a test scenario creation stage.
    Type: Application
    Filed: May 2, 2014
    Publication date: April 30, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Tae In HWANG, Il Woo LEE
  • Publication number: 20150120269
    Abstract: Examples of energy forecasting in hierarchical energy systems are provided herein. A global forecast model instance for a hierarchical energy system can be determined through aggregation of energy forecast model data from individual energy smart meters. Energy forecast model data can include values for energy forecast model parameters used by the individual smart meters. The energy smart meters include measurement, forecasting, and calculation capabilities. The smart meters locally determine a forecast model instance used by the smart meter and provide corresponding information to higher levels in the energy system hierarchy. A global forecast model instance is determined based on the provided information.
    Type: Application
    Filed: January 31, 2014
    Publication date: April 30, 2015
    Inventors: Lars Dannecker, Robert Lorenz, Philipp Roesch
  • Patent number: 9020799
    Abstract: A method a system and method for optimizing the power distribution between a fuel cell stack and a high voltage battery in a fuel cell vehicle. The method includes defining a virtual battery hydrogen power for the battery that is based on a relationship between a battery power request from the battery and an efficiency of the battery and defining a virtual stack hydrogen power for the fuel cell stack that is based on a relationship between a stack power request from the fuel cell stack and an efficiency of the fuel cell stack. The virtual battery hydrogen power and the virtual stack hydrogen power are converted into polynomial equations and added together to provide a combined power polynomial equation. The combined power polynomial equation is solved to determine a minimum of the fuel cell stack power request by setting a derivative of the virtual stack hydrogen power to zero.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Oliver Maier
  • Patent number: 9020800
    Abstract: Apparatus, systems, computer readable media and methods for controlling power realized by energy service equipment based on market data are disclosed. A method simulates execution of control models, as simulation results; selects one of the control models during a first period; and controls operation of the energy services equipment in a second period, using the selected control model. According to an exemplary apparatus, each control model is based on a set of changing market data and controls operation of energy service equipment. A system controls power realized from different energy service equipment using market data. The system includes a model processor that simulates execution of model sets using market data to generate a simulation result; a model selector that selects a model of each set based on simulation results; and a processor that controls operation of the different energy service equipment using the selected model of each respective model set.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: April 28, 2015
    Assignee: The AES Corporation
    Inventors: John Christopher Shelton, Jay Craig Geinzer, Brett Lance Galura, Isaiah Dallas Jefferson, Jr.
  • Patent number: 9020798
    Abstract: A system for real-time simulation of a battery comprising simulating a cell array by an overall computer model is disclosed. The model includes a plurality of single cells. A computer is connected via a cell voltage emulator to a control unit calculating terminal voltages of single cells by using the overall model and supplying the calculated terminal cell voltages to the control unit by the cell voltage emulator. The overall model comprises a first model which models a first single reference cell having cell parameters typical of the cell array and sending the total input current of the cell array to the first model as an input variable. The terminal voltage of the reference cell is calculated by the first model. The overall model further comprises a second model which calculates a deviation in the terminal voltage of an additional single cell from the terminal voltage of the reference cell.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 28, 2015
    Assignee: dSPACE digital signal processing and control engineering GmbH
    Inventors: Hagen Haupt, Thomas Schulte, Christian Vollbrecht
  • Publication number: 20150112661
    Abstract: Disclosed is an overcurrent simulation method when a nail penetrates a secondary battery and a recording medium storing the program. The overcurrent simulation method according to the present disclosure constructs a safety device and a secondary battery equivalent circuit, and produces a nail penetration effect by changing a resistance value. In this instance, various current simulations may be obtained by changing a first metal sheet and a second metal sheet included in the safety device, and a resistance value limiting an overcurrent may be calculated.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Se-Wook SEO, Dal-Mo KANG, Seung-Hun JUNG
  • Patent number: 9009019
    Abstract: Techniques for optimizing a distribution circuit (e.g., electric power grid) are described. Primary wiring of a distribution circuit may comprise a plurality of unique primary paths, from a source to an end (a transformer). Each primary path may include a plurality of primary segments, and each primary segment may be in one or more primary paths. A maximum voltage drop on any primary segment may be selected as a smallest of maximum allowed voltage drops across that segment in each of the primary paths. Because the voltage drop across each primary path must be less than a prescribed maximum, the sum of the voltage drops across each primary segment in that primary path is less than the prescribed maximum. The prescribed maximum may be adhered to if each primary segment is constructed of a conductor gauge chosen not to exceed the maximum voltage drop for that segment.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 14, 2015
    Assignee: Itron, Inc.
    Inventors: Laura Dentone, James Poxleitner
  • Publication number: 20150100295
    Abstract: A method of forecasting a resource load for consumption at a site, e.g., an electrical load of a site. The method includes receiving historical load data and historical ambient condition data that are time series data pertaining to a site and generating additional data from the received data. The method includes building a best sub-model for each of multiple forecast intervals. The building includes clustering in parallel training portions of the historical load data and the additional data, training possible sub-models using the clustered training portions, verifying forecasted loads output from the possible sub-models against verification portions of the historical load data and the additional data, and determining a first subset of parameters for the best sub-model based upon accuracy of the forecasted loads. The method includes forecasting a resource load at the site for each of the forecast intervals using an ensemble of the best sub-models.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Jorjeta JETCHEVA, Mostafa MAJIDPOUR
  • Patent number: 9002694
    Abstract: An approach is provided in which a power design verification system retrieves a power intent data corresponding to a power design, which identifies the power design's power modes and power mode transition conditions. The power design verification system selects one of the power mode transition conditions, which identifies input signals that invoke a transition from a first power mode to a second power mode. In turn, the power design verification system generates simulation stimuli based upon the identified input signals and simulates the power design utilizing the generated simulation stimuli accordingly.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: April 7, 2015
    Assignee: Freescale Semiconductors, Inc.
    Inventors: Xiushan Feng, Jayanta Bhadra, Scott R. Little
  • Publication number: 20150092901
    Abstract: A method of operating a nuclear reactor is provided. The method includes defining a layer increment of a deposit layer modeling a deposit on a heat transfer surface of the nuclear reactor; periodically updating a thickness of the deposit layer by adding the layer increment to the deposit layer; recalculating properties of the deposit layer after each layer increment is added to the deposit layer; determining a temperature related variable of the heat transfer surface as a function of the recalculated properties of the deposit layer; and altering operation of the nuclear reactor when the temperature related variable of the heat transfer surface reaches a predetermined value. A method of modeling a deposit on a heat transfer surface of a nuclear reactor is also provided.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 2, 2015
    Applicant: AREVA NP Inc.
    Inventors: Mihai G. M. Pop, Joseph R. Wyatt, John C. Griffith
  • Patent number: 8989909
    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.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: March 24, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Daniel Park, James Owen, Carl Mansfield, David Elrod
  • Patent number: 8983810
    Abstract: An apparatus for monitoring nuclear thermal hydraulic stability of a nuclear reactor, contains: a calculation unit configured to calculate a stability index of a nuclear thermal hydraulic phenomenon based on nuclear instrumentation signals, the signals being outputted by a plurality of nuclear instrumentation detectors placed at regular intervals in a reactor core; a simulation unit configured to simulate the nuclear thermal hydraulic phenomenon based on a physical model by using information on an operating state of the nuclear reactor as an input condition; a limit value updating unit configured to update a limit value of the nuclear thermal hydraulic phenomenon based on a result of the simulation; and a determination unit configured to determine, based on the stability index and the limit value, whether or not to activate a power oscillation suppressing device.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Takeuchi, Hiroyuki Takeuchi, Kazuki Yano