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    GENSET ENGINE PARALLELING CONTROLS, DEVICES, SYSTEMS, AND METHODS
    31.
    发明申请
    GENSET ENGINE PARALLELING CONTROLS, DEVICES, SYSTEMS, AND METHODS 有权

    公开(公告)号：US20210111651A1

    公开(公告)日：2021-04-15

    申请号：US17068414

    申请日：2020-10-12

    Applicant: Schweitzer Engineering Laboratories, Inc.

    Inventor： Scott M. Manson ,  Ellery A. Blood ,  Gregary C. Zweigle

    IPC: H02P9/10 ,  H02P9/04 ,  F02D31/00 ,  F02B63/04

    Abstract: A device to control a genset engine may use multiple feedback loops to provide a fast stable response to load changes. An outer feedback loop may receive frequency measurements and power measurements of a genset engine and determine a dispatch adjustment comprising a frequency setpoint based on the frequency measurements and power measurements. A middle feedback loop may comprise a double deadband droop filter that periodically generates a pulse based on the frequency setpoint and the power measurements. The middle feedback loop may update an inner loop setpoint based on the pulse. An inner feedback loop may alter a target fuel valve reference of the genset engine based on the inner loop setpoint generated by the second controller and a fuel valve droop.

    Synchronous Machine Monitoring Using Time Stamped Electrical and Mechanical Data
    33.
    发明申请
    Synchronous Machine Monitoring Using Time Stamped Electrical and Mechanical Data 审中-公开
    使用时间戳的机电数据进行同步机监控

    公开(公告)号：US20150331052A1

    公开(公告)日：2015-11-19

    申请号：US14709818

    申请日：2015-05-12

    Applicant: Schweitzer Engineering Laboratories, Inc.

    Inventor： Nicholas C. Seeley ,  David J. Casebolt ,  Gregary C. Zweigle

    IPC: G01R31/34

    CPC classification number: G01R31/343 ,  G01R31/34

    Abstract: Electrical power machines are monitored according to the disclosure herein using time stamped mechanical conditions and electrical conditions. The mechanical conditions may include rotational position, calculated and time stamped rotational frequency, valve position, temperature, or vibration. The time stamped electrical conditions may include electrical power system frequency, electrical power machine field data, electrical power machine terminal information such as voltage and current, and the like. Electrical and mechanical time-stamped electrical power machine data from different machines that may be local or remote from each other may be compared for monitoring the machines.

    Abstract translation: 根据本文的公开内容，使用时间戳的机械条件和电气条件来监测电力机器。 机械条件可以包括旋转位置，计算的和时间标记的旋转频率，阀位置，温度或振动。 时间戳的电气条件可以包括电力系统频率，电力机场现场数据，电力机器终端信息如电压和电流等。 可以比较来自彼此本地或远程的不同机器的电气和机械时间标记的电力机器数据，以监测机器。

    Electric Power System Waveform Search
    34.
    发明申请
    Electric Power System Waveform Search 有权
    电力系统波形搜索

    公开(公告)号：US20130346419A1

    公开(公告)日：2013-12-26

    申请号：US13795586

    申请日：2013-03-12

    Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.

    Inventor： Eric J. Hewitt ,  Gregary C. Zweigle ,  Stanley P. Gotshall

    IPC: G06F17/30

    CPC classification number: G06F17/30613 ,  G06F17/30533 ,  H02J13/0006

    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.

    Abstract translation: 本公开涉及搜索电力系统波形。 本文公开了通过使用诸如频率，幅度，角度，变化率等波形属性对电力系统波形进行索引来提高搜索性能的各种系统和方法。 根据一些实施例，可以一起使用多个索引来查找感兴趣的信息。 可以根据一些实施例来使用参考信号。 使用参考信号归一化多个波形可以有助于使用用于比较两个任意波形的索引。 本公开还涉及检测和索引电力系统中的孤岛状态。 各种实施例可以利用与搜索操作有关的孤岛状态的信息。

    CYBERSECURITY IN ELECTRIC POWER SYSTEMS
    35.
    发明公开
    CYBERSECURITY IN ELECTRIC POWER SYSTEMS 审中-公开

    公开(公告)号：US20240129339A1

    公开(公告)日：2024-04-18

    申请号：US18046671

    申请日：2022-10-14

    Applicant: Schweitzer Engineering Laboratories, Inc.

    Inventor： Gregary C. Zweigle ,  Eric J. Hewitt ,  Matthew J. Halladay

    IPC: H04L9/40

    CPC classification number: H04L63/20 ,  H04L63/105 ,  H04L63/164

    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.

    DETECTION OF RINGDOWN FOR ELECTROMECHANICAL MODE IDENTIFICATION IN ONLINE ENVIRONMENT
    37.
    发明申请
    DETECTION OF RINGDOWN FOR ELECTROMECHANICAL MODE IDENTIFICATION IN ONLINE ENVIRONMENT 有权

    公开(公告)号：US20230015611A1

    公开(公告)日：2023-01-19

    申请号：US17378249

    申请日：2021-07-16

    Applicant: Schweitzer Engineering Laboratories, Inc.

    Inventor： Md Arif Khan ,  Riley Grant Huddleston ,  Gregary C. Zweigle

    IPC: G01R19/25 ,  G01R21/133

    Abstract: A system includes a processor operatively coupled to memory. The processor performs operations that include obtaining electrical measurements of a power system. The processor determines a scaled energy value of a first set of the electrical measurements that are scaled with respect to a second set of electrical measurements. The processor determines that a potential ringdown event occurred by comparing the scaled energy value to a threshold energy value. The processor determines that the potential ringdown event is a confirmed ringdown event by comparing a scaled error value to a threshold error value. The processor generates one or more mode estimates from the confirmed ringdown event.

    Discharge event monitoring device
    38.
    发明授权
    Discharge event monitoring device 有权

    公开(公告)号：US11143687B2

    公开(公告)日：2021-10-12

    申请号：US16248324

    申请日：2019-01-15

    Applicant: Schweitzer Engineering Laboratories, Inc.

    Inventor： Scott M. Manson ,  Shankar V. Achanta ,  Gregary C. Zweigle

    IPC: H02H7/00 ,  G01R31/12 ,  H02H7/26 ,  H02H1/00 ,  G01R31/14

    Abstract: The present disclosure relates to systems and methods of detecting discharge events on power lines. For example, a system may include an acoustic sensor that detects a sound wave emitted from a power line. The system may include a radio frequency (RF) sensor that detects a radio wave emitted from the power line. The system may include electrical sensor circuitry that detects an electrical parameter of power being delivered on the power line. The system may include a processor that determines that a discharge event has occurred based on the sound wave, the radio wave, and the electrical characteristic. The system may provide an output signal indicating that the partial discharge event has occurred.

    Distributed control in electric power delivery systems
    40.
    发明授权
    Distributed control in electric power delivery systems 有权

    公开(公告)号：US10971933B2

    公开(公告)日：2021-04-06

    申请号：US16406501

    申请日：2019-05-08

    Applicant: Schweitzer Engineering Laboratories, Inc.

    Inventor： Gregary C. Zweigle ,  Ellery A. Blood

    IPC: H02J3/24 ,  G05B13/04 ,  H02J3/38 ,  H02J13/00

    Abstract: This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage. The control strategy may be communicated to and implemented by the plurality of control devices.

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