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公开(公告)号：US20220247166A1
公开(公告)日：2022-08-04
申请号：US17647252
申请日：2022-01-06
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Bogdan Z. Kasztenny
Abstract: Protection of an electric power delivery system using a traveling wave overcurrent element is disclosed herein. A maximum traveling wave mode among the alpha and beta modes is selected and compared with a traveling wave overcurrent threshold to determine a traveling wave overcurrent. Traveling wave overcurrent protection may be enabled depending on a termination status of the protected electric power delivery system. When a remote terminal is terminated on high surge impedance, a local protection system may use local traveling wave current quantities to determine a traveling wave overcurrent, and the traveling wave overcurrent may be used for line protection. Systems for detecting a termination status use local and remote current quantities.
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公开(公告)号：US20220216698A1
公开(公告)日：2022-07-07
申请号：US17704860
申请日：2022-03-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Craig Thompson , Scott M. Manson
Abstract: The present disclosure relates to a recloser control that provides autosynchronization of a microgrid to an area electric power system (EPS). For example, a recloser control may include an output connector that is communicatively coupled to a recloser at a point of common coupling (PCC) between the area EPS and the microgrid. The recloser control may include a processor that acquires a first set of measurements indicating electrical characteristics of the area EPS and acquires a second set of measurements indicating electrical characteristics of the microgrid. The recloser control may send synchronization signals to one or more distributed energy resource (DER) controllers to synchronize one or more DERs to the area EPS based on the first set of measurements and the second set of measurements.
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公开(公告)号：US11368048B2
公开(公告)日：2022-06-21
申请号：US16938176
申请日：2020-07-24
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
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公开(公告)号：US20220179980A1
公开(公告)日：2022-06-09
申请号：US17113606
申请日：2020-12-07
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Colin Gordon , Jason A. Dearien
Abstract: A system has an intelligent electronic device (TED) and a switch configured to perform operations that include obtaining a rule associating a media access control security (MACsec) port identifier (PI) of the TED with a data flow, receiving a frame comprising data and the MACsec PI, and transmitting the data of the frame based on the data flow associated with the rule.
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公开(公告)号：US20220158826A1
公开(公告)日：2022-05-19
申请号：US17099894
申请日：2020-11-17
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Colin Gordon , Dennis Gammel
Abstract: A system includes an entropy device configured to generate and distribute input entropy data and an intelligent electronic device (IED) of an electric power distribution system. The IED is configured to perform operations that include receiving the input entropy data distributed by the entropy device, generating a set of keys using the input entropy data, and establishing a Media Access Control Security (MACsec) communication link using the set of keys.
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Patent Agency Ranking
公开(公告)号：US11316349B2
公开(公告)日：2022-04-26
申请号：US16435830
申请日：2019-06-10
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Craig Thompson , Scott M Manson
Abstract: The present disclosure relates to a recloser control that provides autosynchronization of a microgrid to an area electric power system (EPS). For example, a recloser control may include an output connector that is communicatively coupled to a recloser at a point of common coupling (PCC) between the area EPS and the microgrid. The recloser control may include a processor that acquires a first set of measurements indicating electrical characteristics of the area EPS and acquires a second set of measurements indicating electrical characteristics of the microgrid. The recloser control may send synchronization signals to one or more distributed energy resource (DER) controllers to synchronize one or more DERs to the area EPS based on the first set of measurements and the second set of measurements.
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47.发明申请公开(公告)号：US20220116391A1
公开(公告)日：2022-04-14
申请号：US17065940
申请日：2020-10-08
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Colin Gordon , Dennis Gammel
IPC: H04L29/06
Abstract: A system includes an intelligent electronic device (IED) and a proxy device communicatively coupled to the TED via a Media Access Control (MACsec) communication link. The proxy device is configured to perform operations that include receiving permissions data, receiving a request to perform an action associated with the TED, determining whether the action is authorized based on the permissions data, and transmitting data to the TED via the MACsec communication link in response to determining that the action is authorized.
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公开(公告)号：US11280834B2
公开(公告)日：2022-03-22
申请号：US16549853
申请日：2019-08-23
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Armando Guzman-Casillas , Veselin Skendzic , Mangapathirao Venkata Mynam , Bogdan Z. Kasztenny
IPC: G01R31/58 , G01R31/327 , G01R31/08 , G01R21/133
Abstract: The present disclosure relates to determining locations of low-energy events on power lines. For example, an IED may receiving an input signal indicating a local electrical condition of a power line. The IED may detect traveling waves on the power line based on the local electrical condition. The IED may detect traveling waves on the power line based on the local and remote electrical conditions. The IED may determine that the traveling waves are associated with a low-energy event. The IED may determine the location of the low-energy event on the power line based at least in part on the traveling waves.
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公开(公告)号：US11258249B2
公开(公告)日：2022-02-22
申请号：US17034142
申请日：2020-09-28
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Tony J. Lee , Krishnanjan Gubba Ravikumar
Abstract: Primary protection relays and an integrator disclosed for providing primary protection and secondary applications for an electric power delivery system. The primary protection relays obtain signals from, and provide primary protection operations for the power system, and may operate independently from the integrator. An integrator receives signals and status communications from the primary protection relays to perform secondary applications for the electric power delivery system. The secondary applications may include backup protection, system protection, interconnected protection, and automation functions.
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公开(公告)号：US11228521B2
公开(公告)日：2022-01-18
申请号：US16672630
申请日：2019-11-04
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Tristan Lloyd Mullis
Abstract: Systems and methods for detecting a failover capability of a network device of a computer network are disclosed. A network controller, upon detecting incoming traffic from a network device, can disable the port of the network where the incoming traffic is detected. The network controller can then detect if the network device has failed over to send network traffic to the network via another port of the network, or determine the network device is incapable of failover communication if network traffic from the network device only arrives at the original port after that port is re-enabled.
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