公开(公告)号：US20220385058A1

公开(公告)日：2022-12-01

申请号：US17318440

申请日：2021-05-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gabriel Benmouyal ,  Ritwik Chowdhury

IPC: H02H7/04 ,  H02H1/00 ,  G05B19/042

Abstract: An intelligent electronic device (IED) may obtain a voltage measurement matrix based on an arrangement of a transformer in a power system. The TED may obtain a delta connection compensating angle based on the location of the circuit breaker and the transformer arrangement. The IED may obtain voltage measurements of the transformer. The TED may determine a residual flux value of the transformer based at least in part on the voltage measurements, the voltage measurement matrix and the delta connection compensating angle. The TED may send a signal to a circuit breaker of the transformer to connect the transformer to the power system based at least in part on the system voltage and residual flux value.

公开(公告)号：US10197614B2

公开(公告)日：2019-02-05

申请号：US15143938

申请日：2016-05-02

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gabriel Benmouyal ,  Brian A. Smyth

IPC: G01R31/08

Abstract: The present disclosure illustrates the errors that are encountered when using both single-ended and double-ended normal-mode fault location calculations when a fault occurs in a pole-open condition. The disclosure provides systems and methods for accurately calculating the location of faults that occur during pole-open conditions, including single-ended approaches and double-ended approaches.

公开(公告)号：US20210359503A1

公开(公告)日：2021-11-18

申请号：US16872636

申请日：2020-05-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ritwik Chowdhury ,  Gabriel Benmouyal ,  Carolyn Sun

IPC: H02H3/02 ,  H02H1/00 ,  G05B17/02 ,  G05B9/02

Abstract: Systems and methods to estimate trapped charge for a controlled automatic reclose of a power line using a ganged switching device are described herein. For example, an intelligent electronic device (IED) may calculate a voltage amount associated with trapped charge of each phase of a power line based on voltage measurements of the power line. The IED may send a signal to close a ganged switching device at a time based at least in part on the trapped charge of each phase of a power line.

公开(公告)号：US20190146024A1

公开(公告)日：2019-05-16

申请号：US16232474

申请日：2018-12-26

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gabriel Benmouyal ,  Brian A. Smyth

IPC: G01R31/08

Abstract: The present disclosure illustrates the errors that are encountered when using both single-ended and double-ended normal-mode fault location calculations when a fault occurs in a pole-open condition. The disclosure provides systems and methods for accurately calculating the location of faults that occur during pole-open conditions, including single-ended approaches and double-ended approaches.

公开(公告)号：US20170315168A1

公开(公告)日：2017-11-02

申请号：US15143938

申请日：2016-05-02

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gabriel Benmouyal ,  Brian A. Smyth

IPC: G01R31/08

CPC classification number: G01R31/085

Abstract: The present disclosure illustrates the errors that are encountered when using both single-ended and double-ended normal-mode fault location calculations when a fault occurs in a pole-open condition. The disclosure provides systems and methods for accurately calculating the location of faults that occur during pole-open conditions, including single-ended approaches and double-ended approaches.

公开(公告)号：US11575253B2

公开(公告)日：2023-02-07

申请号：US16872636

申请日：2020-05-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ritwik Chowdhury ,  Gabriel Benmouyal ,  Carolyn Sun

IPC: H02H1/00 ,  H02H3/02 ,  G05B9/02 ,  G05B17/02

Abstract: Systems and methods to estimate trapped charge for a controlled automatic reclose of a power line using a ganged switching device are described herein. For example, an intelligent electronic device (IED) may calculate a voltage amount associated with trapped charge of each phase of a power line based on voltage measurements of the power line. The IED may send a signal to close a ganged switching device at a time based at least in part on the trapped charge of each phase of a power line.

公开(公告)号：US11346878B2

公开(公告)日：2022-05-31

申请号：US16232474

申请日：2018-12-26

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gabriel Benmouyal ,  Brian A. Smyth

IPC: G01R31/08 ,  H02J13/00

Abstract: The present disclosure illustrates the errors that are encountered when using both single-ended and double-ended normal-mode fault location calculations when a fault occurs in a pole-open condition. The disclosure provides systems and methods for accurately calculating the location of faults that occur during pole-open conditions, including single-ended approaches and double-ended approaches.

公开(公告)号：US11476655B2

公开(公告)日：2022-10-18

申请号：US16742039

申请日：2020-01-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Ritwik Chowdhury ,  Gabriel Benmouyal ,  Carolyn Sun

IPC: H02H1/00 ,  H02J3/04 ,  H02J13/00 ,  H02H3/00 ,  G01R19/00 ,  G01R31/58 ,  G01R29/24 ,  G05B19/042

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.

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

IPC: H02H1/00 ,  H02J13/00 ,  G01R19/00 ,  G01R31/58 ,  G01R29/24 ,  G05B19/042 ,  H02H3/00 ,  H02J3/04

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.

公开(公告)号：US11996688B2

公开(公告)日：2024-05-28

申请号：US17318440

申请日：2021-05-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Gabriel Benmouyal ,  Ritwik Chowdhury

IPC: H02H7/04 ,  G05B19/042 ,  H02H1/00

CPC classification number: H02H7/04 ,  G05B19/0428 ,  H02H1/0007 ,  H02H1/0092 ,  G05B2219/21155

Abstract: An intelligent electronic device (IED) may obtain a voltage measurement matrix based on an arrangement of a transformer in a power system. The IED may obtain a delta connection compensating angle based on the location of the circuit breaker and the transformer arrangement. The IED may obtain voltage measurements of the transformer. The IED may determine a residual flux value of the transformer based at least in part on the voltage measurements, the voltage measurement matrix and the delta connection compensating angle. The IED may send a signal to a circuit breaker of the transformer to connect the transformer to the power system based at least in part on the system voltage and residual flux value.