公开(公告)号：US10753976B2

公开(公告)日：2020-08-25

申请号：US15783925

申请日：2017-10-13

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Dale S. Finney ,  Normann Fischer ,  Derrick Haas

IPC: G01R31/34 ,  H01H47/00 ,  H02P9/10 ,  H02P29/024 ,  H02P29/60

Abstract: The present disclosure relates to systems and methods for detecting transient high-torque events associated with rotating machinery in an electric power system. In one embodiment, a relay may include an electrical parameters module that receives a representation of a voltage and a current at a terminal of rotating machinery in an electric power system. A torque calculation module may continuously determine a calculated torque value for the rotating machinery using the representation of the voltage and the current at the terminal of the rotating machinery and compare each calculated torque value to a threshold. An action module may generate an alarm when the calculated torque value exceeds the threshold. A log module may generate a log comprising a peak of the calculated torque value and a time at which the peak torque value occurs.

公开(公告)号：US20190113575A1

公开(公告)日：2019-04-18

申请号：US15783925

申请日：2017-10-13

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Dale S. Finney ,  Normann Fischer ,  Derrick Haas

IPC: G01R31/34 ,  H01H47/00

Abstract: The present disclosure relates to systems and methods for detecting transient high-torque events associated with rotating machinery in an electric power system. In one embodiment, a relay may comprise an electrical parameters module configured to receive a representation of a voltage and a current at a terminal of rotating machinery in an electric power system. A torque calculation module may be configured to continuously determine a calculated torque value for the rotating machinery using the representation of the voltage and the current at the terminal of the rotating machinery; and to compare each calculated torque value to a threshold. An action module may be configured to generate an alarm when the calculated torque value exceeds the threshold. A log module may be configured to generate a log comprising a peak of the calculated torque value and a time at which the peak torque value occurs.