公开(公告)号：US11128481B2

公开(公告)日：2021-09-21

申请号：US16414449

申请日：2019-05-16

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Manodev J. Rajasekaran ,  Greg Rzepka ,  Bryon S. Bridges

IPC: H04L12/10

Abstract: Disclosed herein are systems for hardware accelerated communications between devices for the protection of electric power delivery systems. For example, a merging unit may include input circuitry that receives a monitoring signal indicating an electrical characteristic of a power line. The merging unit may include pre-payload circuitry that generates at least portions of preset metadata of a communication frame. The merging unit may include payload generation circuitry that generates payload data of the communication frame based at least in part on the electrical characteristic. The merging unit may include a communication interface that sends the communication frame to a receiving device.

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：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：US10979330B2

公开(公告)日：2021-04-13

申请号：US16414471

申请日：2019-05-16

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Manodev J. Rajasekaran ,  Greg Rzepka ,  Bryon S. Bridges

IPC: H04L12/26 ,  H02H3/10 ,  H02H1/00 ,  G01R31/08

Abstract: Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) from signals from merging units where the merging unit does not require a common or external time source. Communications from merging units may arrive at different times due to differences in communication latency or other factor. The IED may associate digital samples from merging units with a local time domain of the IED based on the data acquisition, data processing, and data communication latency in communicating with the merging units.