公开(公告)号：US20240204868A1

公开(公告)日：2024-06-20

申请号：US18067847

申请日：2022-12-19

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： David J. Dolezilek ,  Mauricio G. Silveira ,  Bharat Nalla

IPC: H04B10/079

CPC classification number: H04B10/07955 ,  G08B21/182

Abstract: A fiber optic communication system may include a transmitting subsystem, a receiving subsystem, a power monitoring subsystem, a temperature monitoring subsystem, an alarm subsystem, and a data logging subsystem. The transmitting subsystem may be configured to transmit optical signals encoding data into an optical path. The receiving subsystem may be configured to receive the optical signals transmitted by the transmitting subsystem and decode the data encoded in the optical signal. The power monitoring subsystem may be configured to measure a power of the optical signal during normal operations. The temperature monitoring subsystem may monitor the temperature of the fiber optic communication system at various locations. The alarm subsystem may generate an alarm if the system operates outside of certain thresholds. The data logging subsystem may log the measured temperatures and optical signal power of the fiber optic communication system.

公开(公告)号：US20220239089A1

公开(公告)日：2022-07-28

申请号：US17456936

申请日：2021-11-30

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Lisa Gayle Nelms ,  Tony J. Lee ,  Bryon S. Bridges ,  Derek Lautenschlager ,  Guillermo Ramirez Conejo ,  Stephanie L. McDaid ,  Nishchal Sharma ,  Bharat Nalla ,  Vinodev E. Rajasekaran

IPC: H02H1/00 ,  H02H3/05 ,  H02H3/16 ,  H02J13/00

Abstract: Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) using samples and sample time offset from merging units. The merging units do not require access to a common time signal. The IED does not require storage of a communication latency with the merging units. The sample time offset corresponds to a latency between obtaining the sample and receipt of the sample at the IED. The IED aligns samples from various merging units using sample time offset values communicated from the merging units to the IED. The IED performs monitoring and protection functions using the time aligned samples.

公开(公告)号：US20250047427A1

公开(公告)日：2025-02-06

申请号：US18363082

申请日：2023-08-01

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Mauricio G. Silveira ,  Bharat Nalla ,  Rajeev Kumar Babu ,  David J. Dolezilek ,  Edson L. Hernandez Cortinas ,  Nishchal Sharma ,  Andrew W. Rash ,  Andrew A. Miller ,  Lihua Ran

IPC: H04L1/22 ,  H04L1/1867 ,  H04L41/0604

Abstract: This disclosure pertains to systems and methods to detect network errors in a parallel redundant protocol (PRP) network. A node-level redundancy error subsystem of an intelligent electronic device (IED) maintains records (e.g., counts) of information associated with missing duplicate frames expected from node devices on the PRP network via redundant first and second local area networks (LANs). Non-zero counts of missing duplicate frames may be identified as network errors.

公开(公告)号：US11606281B2

公开(公告)日：2023-03-14

申请号：US17325458

申请日：2021-05-20

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Bharat Nalla ,  Nishchal Sharma ,  Arun Shrestha ,  Ozan Akyildiz ,  Mauricio G. Silveira ,  Manodev J. Rajasekaran ,  Sajal Harmukh ,  Jaya R A K Yellajosula

IPC: H04L43/16 ,  H04L43/0823 ,  H04L43/0829 ,  H04L43/0852

Abstract: Systems and methods are disclosed to monitor real-time digital data for degradation. In one embodiment, an intelligent electronic device (“IED”) in an electric power system may include an interface to receive a stream of digital data, the stream of digital data comprising a plurality of data frames. A protective action subsystem may monitor the sampled digital data and implement a protective action based on the stream of sampled digital data. A digital data degradation detection subsystem may analyze a plurality of digital metrics associated with the plurality of data frames and make a determination regarding degradation of a communication channel based on whether the plurality of digital metrics fails at least one threshold. In response to the determination, the digital data degradation detection subsystem may implement a response to the determination that the plurality of digital metrics fails at least one threshold.

公开(公告)号：US20240098003A1

公开(公告)日：2024-03-21

申请号：US18183474

申请日：2023-03-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edson L. Hernandez Cortinas ,  Preston Stephens ,  Bharat Nalla ,  Mauricio G. Silveira ,  Gabriel DeRuwe ,  Dennis Holmbo ,  David J. Dolezilek

IPC: H04L43/0817 ,  H04L43/16

CPC classification number: H04L43/0817 ,  H04L43/16

Abstract: Systems and methods may be used to assess network communications by generating one or more current communication parameters based on communications at an intelligent electronic device (IED) within an electric power delivery system. Network communications may be assessed by determining, at the IED, whether the communications fall within one or more thresholds for the current communication parameters.

公开(公告)号：US20220286534A1

公开(公告)日：2022-09-08

申请号：US17190801

申请日：2021-03-03

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Bharat Nalla ,  Vishal Patil ,  Lisa Gayle Nelms ,  Lihua Ran ,  Ozan Akyildiz

IPC: H04L29/06 ,  H04L29/08 ,  G05B19/042 ,  H02H1/00 ,  H02H7/20

Abstract: The present disclosure pertains to systems and methods to verify information received from a merging unit. In one embodiment, a system may include a merging unit interface comprising a port configured to communicate with the merging unit. The system may include a commissioning subsystem to receive a unique identifier (“UID”) associated with the merging unit using the port during a commissioning process, to store the UID associated with the merging unit, and to associate the UID with the port. In operation, a verification subsystem may receive a plurality of transmissions from the merging unit and verify that the plurality of transmissions originated from the merging unit based on matching the UID stored in the commissioning process with the UID in the plurality of transmissions, and confirming that the plurality of transmissions is received through the port associated with the UID.

公开(公告)号：US11949222B2

公开(公告)日：2024-04-02

申请号：US17456936

申请日：2021-11-30

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Lisa Gayle Nelms ,  Tony J. Lee ,  Bryon S. Bridges ,  Derek Lautenschlager ,  Guillermo Ramirez Conejo ,  Stephanie L. McDaid ,  Nishchal Sharma ,  Bharat Nalla ,  Vinodev E. Rajasekaran

IPC: H02H1/00 ,  G01R31/08 ,  H02H3/05 ,  H02H3/16 ,  H02J13/00

CPC classification number: H02H1/0061 ,  H02H3/05 ,  H02H3/16 ,  H02J13/0004 ,  G01R31/085

Abstract: Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) using samples and sample time offset from merging units. The merging units do not require access to a common time signal. The IED does not require storage of a communication latency with the merging units. The sample time offset corresponds to a latency between obtaining the sample and receipt of the sample at the IED. The IED aligns samples from various merging units using sample time offset values communicated from the merging units to the IED. The IED performs monitoring and protection functions using the time aligned samples.

公开(公告)号：US11550285B1

公开(公告)日：2023-01-10

申请号：US17363529

申请日：2021-06-30

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Arun Shrestha ,  Karen S J Wyszczelski ,  Priyanka Nadkar ,  Bharat Nalla ,  Sathish Kumar Mutha

IPC: G05B19/042

Abstract: Systems, methods, and devices are provided for determining a maintenance mode of one or more merging units of an electric power delivery system using an intelligent electronic device that may rely on communication from wired (or wireless) electrical measurement devices. The intelligent electronic device may be a line relay. The merging units may provide data to the line relay including at least one bit indicating a maintenance mode of each merging unit. If a maintenance mode bit from a particular merging unit indicates that the merging unit is in the maintenance mode, logic of the line relay may determine if a maintenance mode override is received. If so, the line relay may disregard the maintenance mode bit and process the data from the merging unit. If the logic determines that the merging unit is in the maintenance mode, the line relay may force data from the merging unit to zero.

公开(公告)号：US20230004131A1

公开(公告)日：2023-01-05

申请号：US17363529

申请日：2021-06-30

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Arun Shrestha ,  Karen SJ Wyszczelski ,  Priyanka Nadkar ,  Bharat Nalla ,  Sathish Kumar Mutha

IPC: G05B19/042

Abstract: Systems, methods, and devices are provided for determining a maintenance mode of one or more merging units of an electric power delivery system using an intelligent electronic device that may rely on communication from wired (or wireless) electrical measurement devices. The intelligent electronic device may be a line relay. The merging units may provide data to the line relay including at least one bit indicating a maintenance mode of each merging unit. If a maintenance mode bit from a particular merging unit indicates that the merging unit is in the maintenance mode, logic of the line relay may determine if a maintenance mode override is received. If so, the line relay may disregard the maintenance mode bit and process the data from the merging unit. If the logic determines that the merging unit is in the maintenance mode, the line relay may force data from the merging unit to zero.

公开(公告)号：US20220377003A1

公开(公告)日：2022-11-24

申请号：US17325458

申请日：2021-05-20

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Bharat Nalla ,  Nishchal Sharma ,  Arun Shrestha ,  Ozan Akyildiz ,  Mauricio G. Silveira ,  Manodev J. Rajasekaran ,  Sajal Harmukh ,  Jaya R A K Yellajosula

IPC: H04L12/26

Abstract: Systems and methods are disclosed to monitor real-time digital data for degradation. In one embodiment, an intelligent electronic device (“IED”) in an electric power system may include an interface to receive a stream of digital data, the stream of digital data comprising a plurality of data frames. A protective action subsystem may monitor the sampled digital data and implement a protective action based on the stream of sampled digital data. A digital data degradation detection subsystem may analyze a plurality of digital metrics associated with the plurality of data frames and make a determination regarding degradation of a communication channel based on whether the plurality of digital metrics fails at least one threshold. In response to the determination, the digital data degradation detection subsystem may implement a response to the determination that the plurality of digital metrics fails at least one threshold.