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公开(公告)号：US20210278447A1
公开(公告)日：2021-09-09
申请号：US17308138
申请日：2021-05-05
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Gregary C. Zweigle , Ellery A. Blood
IPC: G01R21/06 , G01R21/133 , G06Q50/06
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.
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公开(公告)号：US20190267807A1
公开(公告)日：2019-08-29
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
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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公开(公告)号：US10333312B2
公开(公告)日：2019-06-25
申请号：US14303827
申请日：2014-06-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Gregary C. Zweigle , Ellery A. Blood
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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公开(公告)号：US12149073B2
公开(公告)日：2024-11-19
申请号：US17661390
申请日：2022-04-29
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Ellery A. Blood , Scott M. Manson
Abstract: This disclosure discusses systems, methods, and techniques for producing and utilizing a capability region of one or more monitored equipment. To do so, an intelligent electronic device (IED) may access a data set of one or more known performance characteristics of the monitored equipment. The known performance characteristics are based on, or dependent of, one or more variables. The IED may also access a constraint library with geometric primitives. Then, the IED may analyze the data set and may produce the capability region using the geometric primitive. The IED may compare an operating point of the monitored equipment to the capability region of the monitored equipment. Based on the comparison, the IED may implement a control action.
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公开(公告)号：US20240183893A1
公开(公告)日：2024-06-06
申请号：US18061118
申请日：2022-12-02
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Ellery A. Blood , Gregory R. Smelich , Riley Grant Huddleston
IPC: G01R31/08
CPC classification number: G01R31/088 , G01R31/086
Abstract: Systems may include a first data acquisition subsystem, a second data acquisition subsystem, and a traveling wave analysis subsystem. The traveling wave analysis subsystem may be configured to analyze measured traveling wave data from the first data acquisition subsystem and the second data acquisition subsystem. Additionally, methods of analyzing traveling wave data resulting from a fault on an electric power delivery system may involve analyzing measured electrical properties of at least one traveling wave.
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Patent Agency Ranking
公开(公告)号：US20220407311A1
公开(公告)日：2022-12-22
申请号：US17661390
申请日：2022-04-29
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Ellery A. Blood , Scott M. Manson
Abstract: This disclosure discusses systems, methods, and techniques for producing and utilizing a capability region of one or more monitored equipment. To do so, an intelligent electronic device (IED) may access a data set of one or more known performance characteristics of the monitored equipment. The known performance characteristics are based on, or dependent of, one or more variables. The IED may also access a constraint library with geometric primitives. Then, the IED may analyze the data set and may produce the capability region using the geometric primitive. The IED may compare an operating point of the monitored equipment to the capability region of the monitored equipment. Based on the comparison, the IED may implement a control action.
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公开(公告)号：US11261813B2
公开(公告)日：2022-03-01
申请号：US17147584
申请日：2021-01-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Ellery A. Blood , Scott M. Manson
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.
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公开(公告)号：US20210109158A1
公开(公告)日：2021-04-15
申请号：US16601261
申请日：2019-10-14
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Scott M. Manson , Ellery A. Blood , Gregary C. Zweigle
Abstract: A frequency tracking system may use shaft speed and electrical frequency to estimate a frequency of a monitored machine. The frequency tracking system may convert shaft speed to a mechanical frequency and blend the electrical frequency and the mechanical frequency together to determine an estimated frequency. The frequency tracking system may blend the frequencies based on an operating state of the monitored machine and the frequency sensors.
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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
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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公开(公告)号：US10594138B2
公开(公告)日：2020-03-17
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
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.
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