Patents by Inventor Koji Kudo

Koji Kudo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170371073
    Abstract: An object of the present invention is to improve the accuracy of prediction in a technique for predicting natural energy power generation amount, solar radiation amount or wind speed by using a statistical method based on machine learning. In order to achieve this object, provided is a prediction apparatus (10) including a feature value extraction unit (13) that extracts a feature value being a variation in time series from meteorological data from m (m is 2 or more) hours before a target time to the target time, and an estimation unit (first estimation unit (14)) that estimates a natural energy power generation amount, a solar radiation amount, or a wind speed at the target time based on the feature values over plural days.
    Type: Application
    Filed: November 18, 2015
    Publication date: December 28, 2017
    Applicant: NEC Corporation
    Inventors: Katsuya SUZUKI, Kosuke HOMMA, Koji KUDO
  • Patent number: 9849803
    Abstract: An energy system includes an electric device that consumes electric power, a plurality of storage batteries that supplies stored electric power to the electric device, each of the storage batteries being chargeable and dischargeable under the control of an external device, and an information processor that divides the plurality of storage batteries into families which includes the storage batteries having similar charging and discharging characteristics, and that controls the timings to charge and discharge the storage batteries in the family.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: December 26, 2017
    Assignee: NEC CORPORATION
    Inventors: Yukiko Morioka, Hisato Sakuma, Koji Kudo
  • Patent number: 9843203
    Abstract: A battery control system, which controls operation of a plurality of batteries connected to an electric power system, the battery control system comprises: detecting means that detects a delay period of each battery of said plurality of batteries which represents a period that has elapsed after the battery control system supplies said each battery with an execution command for charging or discharging said each battery until said each battery operates according to the execution command; measuring means that measures a frequency rate-of-change of electric power of the electric power system; selecting means that selects adjustment batteries for adjusting the electric power of the electric power system from said plurality of batteries based on the frequency rate-of-change and the delay period of said each battery of said plurality of batteries; and command means for supplying the execution command to the adjustment batteries.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 12, 2017
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Publication number: 20170338679
    Abstract: A supply-and-demand adjustment system, that utilizes characteristics of supply-and-demand adjustment apparatuses and precisely matches a total supply-and-demand adjustment amount with a required adjustment amount when performing a supply-and-demand adjustment.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Applicant: NEC Corporation
    Inventors: Hisato SAKUMA, Koji KUDO, Hitoshi YANO, Kazuhiko AOKI, Yoshiho YANAGITA, Yuma IWASAKI, Ryo HASHIMOTO, Eisuke SANEYOSHI, Takahiro TOIZUMI
  • Patent number: 9812871
    Abstract: A regulating-device-control system for controlling the operation of regulating devices for regulating the balance between electric power supply and demand includes: memory means storing, for each regulating device, correlation information expressing correlation of a state of the regulating device, an amount of power allotted to the regulating device, and an amount of variability in performance of the regulating device; determination means receiving state information that expresses the state of each regulating device and electric power information that expresses an amount of regulated power required for regulating the balance between electric power supply and demand, and, based on the correlation information, the state information, and the electric power information, determining the amount of electric power to be allotted to each regulating device such that the total value of the amount of variability in performance of each of the regulating devices is minimized under conditions in which the state of each regu
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: November 7, 2017
    Assignee: NEC Corporation
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano, Yuma Iwasaki
  • Publication number: 20170317507
    Abstract: This control device includes: a reception unit that receives information that indicates characteristics of a power supply/demand adjustment process; and a determination unit that, on the basis of the information that indicates the characteristics of the power supply/demand adjustment process, determines as usage information to be used for the adjustment process the state of a power grid or an index that relates to an adjustment power amount that was received from a predetermined device.
    Type: Application
    Filed: October 8, 2015
    Publication date: November 2, 2017
    Inventor: Koji KUDO
  • Publication number: 20170264135
    Abstract: An object of the present invention is to set a demand schedule for performing highly efficient demand-supply adjustment of electric power, to deal with electric power demand.
    Type: Application
    Filed: November 18, 2015
    Publication date: September 14, 2017
    Applicant: NEC Corporation
    Inventors: Ryo HASHIMOTO, Hitoshi YANO, Hisato SAKUMA, Koji KUDO, Alexander VIEHWEIDER
  • Publication number: 20170227978
    Abstract: The present invention allows the realization of sufficient control precision and control reliability when using a power supply/demand adjustment device group. A control device (A) that controls power supply/demand adjustment devices includes a communication unit (A1) that receives operation control information of the power supply/demand adjustment devices and a control unit (A2) that executes operation control of the power supply/demand adjustment devices on the basis of the operation control information received by the communication unit. There is a difference, in at least one of the intervals from among the interval for receiving the operation control information and the interval for executing the operation control, between the control device that controls power supply/demand adjustment devices and other control devices that are in different states.
    Type: Application
    Filed: July 15, 2015
    Publication date: August 10, 2017
    Inventors: Koji KUDO, Hisato SAKUMA, Hitoshi YANO
  • Publication number: 20170221161
    Abstract: In power supply/demand adjustment processing for a DR (Demand Response) system, requests for the power supply/demand adjustment processing can be submitted to customers who maintain power supply/demand adjustment devices that can accommodate the power supply/demand adjustment processing. The control device (A) of the present invention is provided with: an acquisition unit (A1) that acquires processing information indicating power supply/demand adjustment processing that can be accommodated by an adjustment unit that manages, for each customer, adjustment amounts for one or more power supply/demand adjustment devices used in power adjustment of power supply/demand adjustment processing; and a reporting unit (A2) that, on the basis of information indicating characteristics relating to the power supply/demand adjustment processing and processing information, reports the actuation of power supply/demand adjustment processing to customers that are the object of the power supply/demand adjustment processing.
    Type: Application
    Filed: July 15, 2015
    Publication date: August 3, 2017
    Inventors: Koji KUDO, Hisato SAKUMA, Hitoshi YANO
  • Publication number: 20170220013
    Abstract: When executing adjustment processing in the power supply/demand adjustment processing of a DR (demand response) system, the present invention can prevents the selection, as a power supply/demand adjustment device to be used (device to be used), of a power supply/demand adjustment device that does not satisfy the characteristics of the adjustment processing.
    Type: Application
    Filed: July 15, 2015
    Publication date: August 3, 2017
    Inventors: Koji KUDO, Hisato SAKUMA, Hitoshi YANO
  • Publication number: 20170199265
    Abstract: A monitoring system including a plurality of monitoring devices (20) and a server (10) is provided. When new device data including a feature amount of a new electrical device different form existing electrical devices is extracted from measurement data (current consumption or the like), the monitoring device (20) calibrates the feature amount of the new electrical device using calibration data generated based on calibration data of the exiting electrical device, and transmits the new device data to the server (10) in association with identification information of the new electrical device. When the calibrated new device data of the new electrical device is received from the plurality of monitoring devices (20), the server (10) generates and registers training data of the new electrical device based on the plurality of pieces of calibrated new device data.
    Type: Application
    Filed: March 13, 2015
    Publication date: July 13, 2017
    Inventors: Takahiro TOIZUMI, Eisuke SANEYOSHI, Katsuya SUZUKI, Kosuke HOMMA, Ryo HASHIMOTO, Koji KUDO
  • Publication number: 20170176503
    Abstract: A monitoring device (10) includes a unit-specific waveform data acquisition unit (11) that acquires waveform data in a unit in which electrical devices are installed; a first inference unit (13) that infers change in operation states of at least some of the electrical devices based on a first monitoring difference group including at least one of at least one kind of feature amount extracted from waveform data of a difference between waveform data of a first timing and waveform data of a second timing in the waveform data, and a differences of at least one kind of feature amounts extracted from the waveform data of the first timing and the waveform data of the second timing, and training difference information regarding a difference between a first operation state and a second operation state of each of the electrical devices; and a second inference unit (14) that infers an operation state of each of the electrical devices based on an inference result of the first inference unit (13).
    Type: Application
    Filed: January 23, 2015
    Publication date: June 22, 2017
    Inventors: Eisuke SANEYOSHI, Koji KUDO, Ryo HASHIMOTO, Kosuke HOMMA, Takahiro TOIZUMI
  • Publication number: 20170176502
    Abstract: A monitoring device (10) includes: a unit-specific waveform data acquisition unit (12) that acquires unit-specific monitoring waveform data which is waveform data of at least one among total current consumption, a total input voltage, and total power consumption in a unit in which monitoring target electrical devices are installed; a first inference unit (13) that infers operation states of at least some of the monitoring target electrical devices based on a 1st feature amount group including at least one kind of feature amount extracted from the unit-specific monitoring waveform data, and a training feature amount which is a feature amount of each of the monitoring target electrical devices in a predetermined operation state; and a second inference unit (14) that infers the operation states of some of the monitoring target electrical devices based on a 2nd feature amount group including at least one kind of feature amount extracted from the unit-specific monitoring waveform data, and different from the 1st f
    Type: Application
    Filed: January 23, 2015
    Publication date: June 22, 2017
    Inventors: Eisuke SANEYOSHI, Ryo HASHIMOTO, Kosuke HOMMA, Koji KUDO, Takahiro TOIZUMI
  • Patent number: 9682633
    Abstract: A charge-control device that controls charging of vehicles, which use electric power as a drive source, using electric power from an electric power grid includes storage means storing a first period in a charge control period for which the charging is controlled; a second period other than the first period in the charge control period; and a target level of a charge demand in the first period; receipt means receiving from each of the vehicles the required charge amount; and control means controlling the charging using the target level of the charge demand in the first period, setting up a target level of charging in the second period based on a remaining total amount generated by subtracting the charge amount in the first period from a total amount of the plurality of required charge amounts to control the charging using the target level of the charging.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: June 20, 2017
    Assignee: NEC Corporation
    Inventors: Hitoshi Yano, Koji Kudo
  • Publication number: 20170141587
    Abstract: A battery control system that communicates by way of a communication network with a plurality of batteries that are connected to an electric power system includes a communication characteristics detection unit that, for each of the plurality of batteries, detects characteristics of communication paths between the batteries and the battery control system within the communication network. The battery control system includes a selection unit which selects, from among the plurality of batteries, each battery that has characteristics of communication paths within a predetermined communication characteristics range, as a regulating battery that is to be used for regulating electric power of the electric power system. The battery control system includes a control unit that supplies operation instructions that instructs the regulating batteries that were selected in the selection unit to perform a charging or discharging operation.
    Type: Application
    Filed: January 27, 2017
    Publication date: May 18, 2017
    Applicant: NEC Corporation
    Inventors: Koji KUDO, Hitoshi YANO, Hisato SAKUMA, Takayuki SHIZUNO, Toshiya OKABE
  • Publication number: 20170117710
    Abstract: An energy management method for an energy supply system which includes at least an energy storage, a load and a generator with power dependent efficiency is provided. The method includes: calculating two time variant parameters indicating a discharge lower limit and an upper charge limit, respectively, of the energy storage, based on optimization using different kinds of prediction; and controlling, in a real time manner, charging and discharging of the energy storage and operation of the generator, with a certain priorities given to various power sources, such that state of charge of the energy storage is controlled within a region between the discharge lower limit and the upper charge limit. When a grid power is available, blackout duration probability function is predicted and used to calculate the discharge lower limit and the upper charge limit.
    Type: Application
    Filed: March 27, 2014
    Publication date: April 27, 2017
    Applicant: NEC CORPORATION
    Inventors: Alexander VIEHWEIDER, Koji KUDO
  • Patent number: 9612584
    Abstract: An electric power grid control system is provided with: distributed generators connected to an electric power grid; and voltage measurement units that measure voltage at connection points of the distributed generators to the electric power grid. When voltage at a connection point to the electric power grid deviates from a predetermined acceptable range, a centralized control device equally allocates a voltage adjustment amount for returning the voltage to the acceptable range to all distributed generators belonging to a predetermined group that was set in advance. Distribution processing devices cause the distributed generators to adjust voltage at the connection points in accordance with the voltage adjustment amount allocated from the centralized control device.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: April 4, 2017
    Assignee: NEC CORPORATION
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano
  • Patent number: 9595844
    Abstract: A battery control system that communicates by way of a communication network with a plurality of batteries that are connected to an electric power system includes: communication characteristics detection means that detects characteristics of communication paths between the batteries and the battery control system for each of the plurality of batteries; selection means that, based on the detection results of the communication characteristics detection means, selects from among the plurality of batteries each battery that uses a communication path having characteristics within a predetermined range of communication characteristics as a candidate of a regulating battery that is to be used for regulating the electric power of the electric power system, and that selects regulating batteries from among candidates of regulating batteries based on predetermined conditions; and control means that supplies operation instructions that instruct the regulating batteries to charge or discharge.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: March 14, 2017
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hitoshi Yano, Hisato Sakuma, Takayuki Shizuno, Toshiya Okabe
  • Publication number: 20170045903
    Abstract: Lower-level information processing device (20-1 to 20-n) obtain parameters used for estimating power consumption in accordance with the statuses of electric devices (30-1 to 30-n), estimate the power consumption of the electric devices (30-1 to 30-n) on the basis of the parameters, and transmits the estimated value of the estimated power consumption to an upper-level information processing device (10). The upper-level information processing device (10) determines an assignment of distribution of supply and demand on the basis of the power supply-demand capacity in a predetermined power network and the estimated value of the power consumption and transmits the determined assignments to the lower-level information processing devices (20-1 to 20-n). The lower-level information processing devices (20-1 to 20-n) controls the operations of the electric device (30-1 to 0-n) on the basis of the assignment of distribution of supply and demand.
    Type: Application
    Filed: March 31, 2015
    Publication date: February 16, 2017
    Applicant: NEC Corporation
    Inventors: Ryo Hashimoto, Hitoshi Yano, Koji Kudo, Hisato Sakuma
  • Patent number: 9531212
    Abstract: A secondary battery has a progressively degrading SOC that is an SOC at which the battery performance degrades during storage, and is charged and discharged by a controller. An information processor holds a first threshold value set in advance and lower than the progressively degrading SOC of the secondary battery, and a second threshold value set in advance and higher than the progressively degrading SOC, makes the controller continue an operation to charge the secondary battery from the first threshold value to the second threshold value at the time of charging the secondary battery based on the value of the SOC of the secondary battery detected by the controller, and makes the controller continue an operation to discharge the secondary battery from the second threshold value to the first threshold value at the time of discharging the secondary battery based on the value of the SOC of the secondary battery detected by the controller.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: December 27, 2016
    Assignee: NEC CORPORATION
    Inventors: Hiroo Hongo, Kenji Kobayashi, Koji Kudo, Kenichi Ishii, Takayuki Nyu