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公开(公告)号：US11100595B2
公开(公告)日：2021-08-24
申请号：US16589731
申请日：2019-10-01
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: Calculation of a value of energy passing a point of an electric power delivery system, and price associated with the value is disclosed herein. Use of energy packets according with the embodiments of this disclosure more accurately represents the amount of energy produced and consumed by equipment. Energy packets may be calculated over one or more phases, over configurable time periods. Energy packets may be used in conjunction with a monetary rate to calculate the price for billing an energy consumer or crediting an energy producer.
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公开(公告)号：US11086081B2
公开(公告)日：2021-08-10
申请号：US16360296
申请日：2019-03-21
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Steven Watts
Abstract: The present disclosure relates to conductive cooling of a small form-factor pluggable (SFP) transceiver. For example, an SFP transceiver assembly may include a cooling block and a thermally conductive pad having a thermally conductive material. The SFP transceiver assembly may include a spring finger that contacts the thermally conductive pad while the SFP transceiver is inserted into the SFP transceiver assembly to allow heat to be conducted from the SFP transceiver to the cooling block via the thermally conductive pad to conductively cool the SFP transceiver.
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公开(公告)号：US11079436B2
公开(公告)日：2021-08-03
申请号：US16919891
申请日：2020-07-02
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Krishnanjan Gubba Ravikumar , Austin Edward Wade
IPC: G01R31/327 , G01R35/02
Abstract: Systems and methods testing a power protection relay include a merging unit to receive signals from an electric power delivery system. The merging unit includes a test signal input to receive test signals from a testing device, a relay output to output at least one of the test signals to a power protection relay, a distribution output to output at least another of the test signals to one or more additional merging units, and a switch subsystem to route the test signal to the relay output or the distribution output.
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公开(公告)号：US11075908B2
公开(公告)日：2021-07-27
申请号：US16414928
申请日：2019-05-17
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Dennis Gammel , James A. Lester
IPC: H04L29/06
Abstract: The present disclosure pertains to systems and methods for improving security and simplifying authentication in a software defined network (“SDN”). In various embodiments, the systems and methods disclosed herein may be applied in operational technology networks, such as those used in electrical power systems. In one embodiment, a device to be authenticated may be in communication with a network device. The network device may receive authentication credentials from the device to be authenticated and may communicate the authentication credentials to an authenticator. The authenticator may assess and approve the authentication credentials and communicate approval of the authentication credentials to the network device. The network device may implement a plurality of communication flows associated with the device to be authenticated.
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公开(公告)号：US20210218239A1
公开(公告)日：2021-07-15
申请号：US16742039
申请日：2020-01-14
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Ritwik Chowdhury , Gabriel Benmouyal , Carolyn Sun
Abstract: Systems and methods to estimate trapped charge for a controlled automatic reclose are described herein. For example, an intelligent electronic device (IED) may calculate an analog amount of trapped charge of each phase of a power line based on voltage measurements of the power line. The IED may close a switching device of each phase at a time corresponding to a point-on-wave associated with the analog amount of trapped charge of the respective phase.
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Patent Agency Ranking
公开(公告)号：US11056874B2
公开(公告)日：2021-07-06
申请号：US16260473
申请日：2019-01-29
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Bogdan Z. Kasztenny , David E. Whitehead
Abstract: An electric power delivery system may be protected upon occurrence of a fault condition by the systems and methods disclosed herein by detecting the fault condition and signaling a protective action before the overcurrent condition reaches the protective equipment. The protective action may be an opening of a circuit breaker or engagement of a fault current limiter. The overcurrent condition may be a non-steady-state condition. The fault may be detected using traveling wave or incremental quantity techniques.
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公开(公告)号：US11050234B2
公开(公告)日：2021-06-29
申请号：US16831128
申请日：2020-03-26
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Krishnanjan Gubba Ravikumar , Austin Edward Wade
Abstract: Systems and methods for facilitating selected communications among primary protection relays using a supervisory system with a configurable input/output (IO) map. Primary protection relays may obtain signals from equipment associated with an electric power delivery system and provide primary protection without need for communication. The primary protection relays may communicate a unique identifier as well as signal values, states, and commands to the supervisory system. The supervisory system may route specifically identified communications among primary protection relays in accordance with a configurable IO map by transmitting selected portions of the communications on a port associated with the receiving primary protection relay. The primary protection relays may perform secondary protection and other operations using the communicated information.
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公开(公告)号：US20210159691A1
公开(公告)日：2021-05-27
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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公开(公告)号：US11018497B2
公开(公告)日：2021-05-25
申请号：US16837522
申请日：2020-04-01
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Jay Hartshorn
Abstract: In-phase transfer of an electric power source to a load bus from a first feeder to a second feeder is disclosed herein. Voltage phase difference, voltage frequency difference, and voltage rate-of-change of frequency difference, between the second feeder and the load bus are used along with a breaker delay time to determine whether the breaker will close while the phase of the second feeder and the load bus are within an acceptable range. One or more breaker close time checks may be performed, including a breaker close time consistency check and a breaker close time uncertainty check.
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公开(公告)号：US20210120001A1
公开(公告)日：2021-04-22
申请号：US16655663
申请日：2019-10-17
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Dennis Gammel , Josh Powers , Jason A. Dearien , Joshua Thomas Pereyda
IPC: H04L29/06
Abstract: The present disclosure pertains to systems and methods of restricting access to devices utilizing tokens. In some embodiments, a system may include a user requesting a token, ensuring the user requesting a token has the permission to request the token and is not the user approving the token. In some embodiments, the system may include the user granting the token, wherein the user granting the token is not the user receiving the token. The system ensures that the user accessing the device has the permission to access the device. Additionally, the system decreases the opportunities for insider attacks and increases the resistance to credential theft attacks. Further, the system increases the accountability for changes and the ability to review changes.
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