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公开(公告)号：US11219147B2
公开(公告)日：2022-01-04
申请号：US17185936
申请日：2021-02-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Michael Barber , Julian M. Alzate , Robert I. Jayne
IPC: G01R31/28 , H05K13/00 , H05K13/08 , G01R11/04 , H02B1/03 , H02B1/32 , H02B1/44 , H05K5/02 , H05K7/14 , H05K7/16 , B25H1/14 , B25H1/18 , H02B1/30
Abstract: Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.
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公开(公告)号：US11204377B2
公开(公告)日：2021-12-21
申请号：US16115111
申请日：2018-08-28
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Bogdan Z. Kasztenny , Tony J. Lee
Abstract: Disclosed herein are systems and methods for estimating a period and frequency of a waveform. In one embodiment a system may comprise an input configured to receive a signal comprising a representation of the waveform. A period determination subsystem may calculate an estimated period of the signal based on a period determination function. An estimated period adjustment subsystem may determine an adjustment to the estimated period based on a result of the period determination function. A quality indicator subsystem configured to evaluate a measurement quality indictor function based on the estimated period, and to selectively update the period of the waveform based on the measurement quality indicator. A control action subsystem configured to implement a control action based on the period of the waveform.
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公开(公告)号：US20210364557A1
公开(公告)日：2021-11-25
申请号：US17397501
申请日：2021-08-09
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Krishnanjan Gubba Ravikumar , Austin Edward Wade
Abstract: Systems and methods to test an electric power delivery system include a communication subsystem to transmit test signals to one or more merging units, a test subsystem to transmit a test data stream to the one or more merging units via the communication subsystem, and a processor subsystem to receive looped back data from the one or more merging unit in response to the transmitted test data stream and to determine an operating condition based on the looped back data.
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公开(公告)号：US11177657B1
公开(公告)日：2021-11-16
申请号：US17032404
申请日：2020-09-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: A power system simulator may calculate mechanical power of at least one generator at a second time in a simulated power system based at least in part on electrical power of the at least one generator at a first time. The power system simulator may calculate system frequency at second time based on system dynamic model that models the electrical power and the mechanical power of the simulated power system, frequency and voltage characteristics in the simulated power system, and inertia of the at least one generator. The power system simulator may provide simulated power system measurements based on the active power values to a power system controller to allow testing of the power system controller.
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公开(公告)号：US11177645B2
公开(公告)日：2021-11-16
申请号：US16692074
申请日：2019-11-22
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Ritwik Chowdhury , Matchyaraju Alla , Vinod K. Yedidi , Jakov Vico , Wasif Ahmad
Abstract: A transformer system including a transformer including a set of wye windings, a three-phase current transformer, a neutral-current transformer, and a controller. The three-phase current transformer outputs a first signal indicative of a three-phase current conducting through the set of wye windings and the three-phase current transformer. The neutral-current transformer couples the current flowing from the ground to the neutral node of the transformer, and outputs a second signal indicative of a neutral current conducting from the ground node to the neutral node of the transformer. The controller receives the first signal and the second signal, determines whether an external ground fault condition or an internal ground fault condition is present based on the three-phase current and the neutral current, and determines whether a wiring error is present for the three-phase current transformer or the neutral-current transformer based on the three-phase current and the neutral current.
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Patent Agency Ranking
公开(公告)号：US11169211B2
公开(公告)日：2021-11-09
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：US11128116B2
公开(公告)日：2021-09-21
申请号：US16421832
申请日：2019-05-24
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Scott A. Wenke , Christopher John Burger , David Blevins
Abstract: Systems for testing a protective arrangement for an electric power delivery system without disconnecting merging units from a protective device are disclosed herein. For example, an intelligent electronic device (IED) may receive, via a monitoring port, one or more operating measurements of an electrical characteristic of the power delivery system while in an operating mode. The IED may change from operating in the operating mode to operating in a test mode. In the test mode, the IED may receive, via a test port, one or more test measurements that represent measurements of the electrical characteristic. The IED may provide test results based at least in part on the one or more test measurements.
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公开(公告)号：US11112815B1
公开(公告)日：2021-09-07
申请号：US16833955
申请日：2020-03-30
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Austin Edward Wade , Dennis Haes
Abstract: Systems and methods to isolate faults and restore power are described herein. For example, an intelligent electronic device (IED) may receive a blocking signal indicating a fault is detected on a power line. The IED may obtain one or more current measurements of the power line. The IED may determine that a fault is not present on the power line at the IED based on the one or more current measurements. The IED may trip a first current interruption device of the IED The IED may send a close permissive signal to another IED indicating that the other IED is permitted to permitted to close an open current interruption device of the other IED to restore power to one or more loads.
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公开(公告)号：US11105832B2
公开(公告)日：2021-08-31
申请号：US17063823
申请日：2020-10-06
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Bogdan Z. Kasztenny , Veselin Skendzic , Travis C. Mallett , Robert Lopez, Jr.
Abstract: The present disclosure pertains to systems and methods for detecting traveling waves in electric power delivery systems. In one embodiment, a system comprises a capacitance-coupled voltage transformer (CCVT) in electrical communication with the electric power delivery system, the CCVT comprising a stack of capacitors and an electrical contact to a first ground connection. Electrical signals from accessible portions of the CCVT are used to detect traveling waves. Current and/or voltage signals may be used. In various embodiments, a single current may be used. The traveling waves may be used to detect a fault on the electric power delivery system.
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公开(公告)号：US20210267103A1
公开(公告)日：2021-08-26
申请号：US17185936
申请日：2021-02-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Michael Barber , Julian M. Alzate , Robert I. Jayne
Abstract: Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.
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