公开(公告)号：US09985860B2

公开(公告)日：2018-05-29

申请号：US14492974

申请日：2014-09-22

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gregary C. Zweigle ,  Eric J. Hewitt ,  Ellery A. Blood ,  Stanley P. Gotshall ,  Riley Grant Huddleston ,  William D. Morrison ,  Jared Kyle Bestebreur

IPC: H04L12/26 ,  H02J13/00 ,  H04L29/08 ,  H04L29/06

CPC classification number: H04L43/10 ,  H02J13/00 ,  H02J13/0006 ,  H02J13/0013 ,  H04L43/04 ,  H04L43/065 ,  H04L65/602 ,  H04L67/125 ,  Y02E60/724 ,  Y04S10/18

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.

公开(公告)号：US20180097363A1

公开(公告)日：2018-04-05

申请号：US15284811

申请日：2016-10-04

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ellery A. Blood ,  David M. Gneiting ,  Jedidiah W. Bartlett

IPC: H02J3/24 ,  G01R31/08

CPC classification number: H02J3/24 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S40/22

Abstract: The present disclosure relates to systems and methods for detection of transients in electric power systems. In one embodiment, a system may detect and remediate a potentially destabilizing transient condition. An angle monitoring subsystem may determine an angle between a first and a second rotating machine based on a plurality of measurements. A system parameter may be determined based on the angle. A stability threshold subsystem may determine a dynamic stability threshold to detect the potentially destabilizing transient condition based on the at least one system parameter. An event detection subsystem may compare at least one metric of instability to the dynamic stability threshold and to detect a first potentially destabilizing transient condition based on the comparison of the at least one metric of instability to the dynamic stability threshold. A remedial action subsystem may implement a first remedial action based on the metric of instability.

公开(公告)号：US11828805B2

公开(公告)日：2023-11-28

申请号：US17319412

申请日：2021-05-13

Applicant: Schweitzer Engineering Laboratories, Inc.

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

IPC: G01R31/34 ,  H02P9/00

CPC classification number: G01R31/343 ,  G01R31/346 ,  H02P9/008

Abstract: A condition-based monitoring system receives a plurality of measurements from sensors measuring mechanical and electrical aspects of a prime mover and a synchronous machine. The condition-based monitoring system determines a correlation between the mechanical measurements and electrical measurements to estimate parameters of the model. The condition-based monitoring system also updates the model as sensors obtain additional measurements during operation of the prime mover.

公开(公告)号：US11686265B2

公开(公告)日：2023-06-27

申请号：US17647240

申请日：2022-01-06

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ellery A. Blood ,  Scott M. Manson

IPC: F02D41/14 ,  F02B77/04 ,  F02B77/08 ,  F02D29/06

CPC classification number: F02D41/1467 ,  F02B77/04 ,  F02B77/083 ,  F02D29/06 ,  F02D2200/021 ,  F02D2200/0611 ,  F02D2200/10

Abstract: An intelligent electronic device (IED) may monitor wet stack residue buildup of a diesel engine. Once the wet stack residue accumulates to a certain amount, the IED may perform a mitigation procedure. Additionally, tracking wet stack residue buildup may allow an IED to attempt to prevent or reduce accumulation of the wet stack residue. The IED may track an operating power level of the diesel engine to estimate the rate of residue buildup.

公开(公告)号：US11146193B2

公开(公告)日：2021-10-12

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 ,  H02P101/25

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.

公开(公告)号：US11035891B1

公开(公告)日：2021-06-15

申请号：US16811129

申请日：2020-03-06

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Gregary C. Zweigle ,  Ellery A. Blood

IPC: G01R21/06 ,  G06Q50/06 ,  G01R21/133

Abstract: Electric power system voltage control and voltage stability may be calculated using energy packets. Sets of negative energy packet sets normalized by a set of positive and negative energy packet sets may be used for voltage control by adding or removing capacitive units. Energy packet voltage indicators may be calculated using energy packets, and used to determine voltage stability. Control actions may be taken depending on the determined voltage stability.

公开(公告)号：US20210131371A1

公开(公告)日：2021-05-06

申请号：US17147584

申请日：2021-01-13

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ellery A. Blood ,  Scott M. Manson

IPC: F02D41/14 ,  F02B77/04 ,  F02B77/08

Abstract: An intelligent electronic device (IED) may monitor wet stack residue buildup of a diesel engine. Once the wet stack residue accumulates to a certain amount, the IED may perform a mitigation procedure. Additionally, tracking wet stack residue buildup may allow an IED to attempt to prevent or reduce accumulation of the wet stack residue. The IED may track an operating power level of the diesel engine to estimate the rate of residue buildup.

公开(公告)号：US20210111652A1

公开(公告)日：2021-04-15

申请号：US17066982

申请日：2020-10-09

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Gregary C. Zweigle ,  Ellery A. Blood ,  Scott M. Manson

IPC: H02P9/42 ,  H03H17/02 ,  H02P9/10

Abstract: A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets and convert the energy packets into a fuel valve reference. Further, a frequency control may receive system feedback associated with the monitored machine and generate a frequency correction based on the system feedback. The controller may add the energy packet value and the frequency correction to determine a prime mover power reference and provide the prime mover power reference to a fuel valve control of the machine.

公开(公告)号：US10920703B1

公开(公告)日：2021-02-16

申请号：US16600623

申请日：2019-10-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ellery A. Blood ,  Scott M. Manson

IPC: F02D41/14 ,  F02B77/04 ,  F02B77/08

Abstract: An intelligent electronic device (IED) may monitor wet stack residue buildup of a diesel engine. Once the wet stack residue accumulates to a certain amount, the IED may perform a mitigation procedure. Additionally, tracking wet stack residue buildup may allow an IED to attempt to prevent or reduce accumulation of the wet stack residue. The IED may track an operating power level of the diesel engine to estimate the rate of residue buildup.

公开(公告)号：US09819227B2

公开(公告)日：2017-11-14

申请号：US14190470

申请日：2014-02-26

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gregary C. Zweigle ,  Eric J. Hewitt ,  Ellery A. Blood

IPC: H02J13/00 ,  G05D3/12 ,  H02J3/00

CPC classification number: H02J13/001 ,  H02J2003/001 ,  H02J2003/003 ,  Y02E60/724 ,  Y02E60/74 ,  Y04S10/18 ,  Y04S10/30 ,  Y04S10/40 ,  Y04S10/525 ,  Y04S10/54

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.