Patents by Inventor Eric J. Hewitt

Eric J. Hewitt 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: 20240129339
    Abstract: Disclosed herein are systems, devices, and methods for improving cybersecurity in electric power systems. In one embodiment, a local controller configured for use in an electric power system may include a measurement subsystem to receive a plurality of conditions related to electrical conditions in a microgrid. A communication subsystem may communicate a set of data related to conditions in the microgrid to a remote controller; and receive a plurality of requests for control actions from the remote controller. An analysis subsystem may generate an assessment of the plurality of requests for control actions in relation to the plurality of conditions related to electrical conditions in the microgrid and identify a subset of the plurality of requests for control actions from the remote controller for execution based on the assessment. A control action subsystem may then issue a control action to an asset in the microgrid.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 18, 2024
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Gregary C. Zweigle, Eric J. Hewitt, Matthew J. Halladay
  • Publication number: 20230022715
    Abstract: Systems, methods, and devices are provided for dynamically generating a histogram for viewing via a user interface. Embodiments presented herein provide apparatus and techniques for generating a histogram and adjusting a view of the histogram without the computations being perceived by a user. To do so, histogram indices may be computed for various time intervals (e.g., minutes, hours, days, etc.) of input data. The indices may be used to generate a histogram for a time interval that may be larger than the interval used to compute the histogram indices. At the time period for the histogram displayed via the user interface is changed by the user, a dynamic histogram builder computes an adjusted histogram using histogram indices for the updated and/or changed time period. Embodiments herein provide techniques which reduce the time to compute the histogram and consume less computing resources to do so.
    Type: Application
    Filed: July 22, 2021
    Publication date: January 26, 2023
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Md Arif Khan, Riley Grant Huddleston, Eric J. Hewitt
  • Publication number: 20210405254
    Abstract: Provided herein is technology relating to measuring weather data and particularly, but not exclusively, to apparatuses, methods, and systems for sensing hydrometeors (e.g., rain) and measuring hydrometeor characteristics (e.g., volume, rate, size distribution, etc.).
    Type: Application
    Filed: November 5, 2019
    Publication date: December 30, 2021
    Inventors: John P. Leonard, Kyle Z. Jero, Bryan A. Dow, Eric J. Hewitt
  • Patent number: 11152916
    Abstract: A system, method, and computer program product are provided for representation of high-frequency signal data. In use, input data is received including high-frequency signals, wherein the input data is of a first width. Next, the input data is processed to manage display of the input data, where specifically the input data is divided into one or more segments based on first criteria including the first width, and from each segment of the one or more segments, a maximum value is identified and a minimum value is identified. The maximum and minimum may be trend maximum and minimum values. The input data is transformed to a visualizable representation of the high-frequency signals, the visualizable representation of the high-frequency signals including a plot of the maximum value and the minimum value for each segment of the one or more segments. Additionally, the plot is displayed.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: October 19, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Matthew J. Halladay, Eric J. Hewitt
  • Publication number: 20200274523
    Abstract: A system, method, and computer program product are provided for representation of high-frequency signal data. In use, input data is received including high-frequency signals, wherein the input data is of a first width. Next, the input data is processed to manage display of the input data, where specifically the input data is divided into one or more segments based on first criteria including the first width, and from each segment of the one or more segments, a maximum value is identified and a minimum value is identified. The maximum and minimum may be trend maximum and minimum values. The input data is transformed to a visualizable representation of the high-frequency signals, the visualizable representation of the high-frequency signals including a plot of the maximum value and the minimum value for each segment of the one or more segments. Additionally, the plot is displayed.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Matthew J. Halladay, Eric J. Hewitt
  • Patent number: 10664553
    Abstract: A system, method, and computer program product are provided for representation of high-frequency signal data. In use, input data is received including high-frequency signals, wherein the input data is of a first width. Next, the input data is processed to manage display of the input data, where specifically the input data is divided into one or more segments based on first criteria including the first width, and from each segment of the one or more segments, a maximum value is identified and a minimum value is identified. Still yet, the input data is transformed to a visualizable representation of the high-frequency signals, the visualizable representation of the high-frequency signals including a plot of the maximum value and the minimum value for each segment of the one or more segments. Additionally, the plot is displayed.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: May 26, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Eric J. Hewitt, Matthew J. Halladay
  • Publication number: 20200142099
    Abstract: Provided herein is technology relating to measuring weather data and particularly, but not exclusively, to apparatuses, methods, and systems for sensing hydrometeors (e.g., rain) and measuring hydrometeor characteristics (e.g., volume, rate, size distribution, etc.).
    Type: Application
    Filed: November 5, 2019
    Publication date: May 7, 2020
    Inventors: John P. Leonard, Kyle Z. Jero, Bryan A. Dow, Eric J. Hewitt
  • Publication number: 20190108194
    Abstract: A system, method, and computer program product are provided for representation of high-frequency signal data. In use, input data is received including high-frequency signals, wherein the input data is of a first width. Next, the input data is processed to manage display of the input data, where specifically the input data is divided into one or more segments based on first criteria including the first width, and from each segment of the one or more segments, a maximum value is identified and a minimum value is identified. Still yet, the input data is transformed to a visualizable representation of the high-frequency signals, the visualizable representation of the high-frequency signals including a plot of the maximum value and the minimum value for each segment of the one or more segments. Additionally, the plot is displayed.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 11, 2019
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Eric J. Hewitt, Matthew J. Halladay
  • Patent number: 9985860
    Abstract: Combining and analyzing streamed and polled electric power delivery system information is disclosed herein. A system therefore includes a plurality of IEDs in communication with the electric power distribution system and configured to provide streaming and/or polled data via a communications network. An analysis engine in communication with the communications network receives selected streaming information and requested polled information, analyzes such streamed and polled information, and provides a display of such streaming and polled information to a user.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: May 29, 2018
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood, Stanley P. Gotshall, Riley Grant Huddleston, William D. Morrison, Jared Kyle Bestebreur
  • Patent number: 9819227
    Abstract: Disclosed is state trajectory prediction in an electric power delivery system. Electric power delivery system information is calculated from measurements by intelligent electronic devices (IEDs), and communicated to a state trajectory prediction system. The state trajectory prediction system may be configured to generate a load prediction profile. The load prediction profile may provide a predicted response of a load at a future time. Further, the state trajectory prediction system may be configured to generate a generator prediction profile that provides a predicted response of a generator at a future time. The state trajectory prediction system may generate a state trajectory prediction based, at least in part, on the load prediction profile and the generator prediction profile. The state trajectory prediction may represent a future state of the electric power delivery system.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: November 14, 2017
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood
  • Publication number: 20150089027
    Abstract: Combining and analyzing streamed and polled electric power delivery system information is disclosed herein. A system therefore includes a plurality of IEDs in communication with the electric power distribution system and configured to provide streaming and/or polled data via a communications network. An analysis engine in communication with the communications network receives selected streaming information and requested polled information, analyzes such streamed and polled information, and provides a display of such streaming and polled information to a user.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood, Stanley P. Gotshall, Riley Grant Huddleston, William D. Morrison, Jared Kyle Bestebreur
  • Patent number: 8880368
    Abstract: The present disclosure relates to searching electric power system waveforms. Disclosed herein are various systems and methods for improving search performance through indexing electric power system waveforms using waveform attributes such as frequency, amplitude, angle, rate of change, and the like. According to some embodiments, multiple indexes may be used together to find information of interest. A reference signal may be utilized according to some embodiments. Normalizing a plurality of waveforms using a reference signal may facilitate the use of an index for comparing two arbitrary waveforms. This disclosure also relates to detecting and indexing islanding conditions in an electric power system. Various embodiments may utilize information relating to islanding conditions in connection with search operations.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 4, 2014
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Eric J Hewitt, Gregory C. Zweigle, Stanley P Gotshall
  • Publication number: 20140244058
    Abstract: Disclosed is state trajectory prediction in an electric power delivery system. Electric power delivery system information is calculated from measurements by intelligent electronic devices (IEDs), and communicated to a state trajectory prediction system. The state trajectory prediction system may be configured to generate a load prediction profile. The load prediction profile may provide a predicted response of a load at a future time. Further, the state trajectory prediction system may be configured to generate a generator prediction profile that provides a predicted response of a generator at a future time. The state trajectory prediction system may generate a state trajectory prediction based, at least in part, on the load prediction profile and the generator prediction profile. The state trajectory prediction may represent a future state of the electric power delivery system.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood
  • Publication number: 20130346419
    Abstract: The present disclosure relates to searching electric power system waveforms. Disclosed herein are various systems and methods for improving search performance through indexing electric power system waveforms using waveform attributes such as frequency, amplitude, angle, rate of change, and the like. According to some embodiments, multiple indexes may be used together to find information of interest. A reference signal may be utilized according to some embodiments. Normalizing a plurality of waveforms using a reference signal may facilitate the use of an index for comparing two arbitrary waveforms. This disclosure also relates to detecting and indexing islanding conditions in an electric power system. Various embodiments may utilize information relating to islanding conditions in connection with search operations.
    Type: Application
    Filed: March 12, 2013
    Publication date: December 26, 2013
    Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.
    Inventors: Eric J. Hewitt, Gregary C. Zweigle, Stanley P. Gotshall