公开(公告)号：US20210109147A1

公开(公告)日：2021-04-15

申请号：US16688168

申请日：2019-11-19

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Normann Fischer ,  Raymond W. Rice ,  Ravindra P. Mulpuri ,  James Mobley

IPC: G01R31/02 ,  G01R31/3185

Abstract: The present disclosure pertains to systems and methods for monitoring and protecting an electric power system. In one embodiment, a system may comprise line-mounted wireless current transformers to measure at least one parameter of an alternating current (AC), receive a synchronization signal at which to measure the AC, and send a message comprising the measured AC. The system may also comprise an intelligent electronic device (IED) to send the synchronization signal to and receive the messages from the line-mount wireless current transformers, determine whether a high-impedance fault (HiZ) exists between the line-mounted wireless current transformers, and implement a control action based on the existence of the HiZ fault.

公开(公告)号：US10962608B1

公开(公告)日：2021-03-30

申请号：US16688168

申请日：2019-11-19

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Normann Fischer ,  Raymond W. Rice ,  Ravindra P. Mulpuri ,  James Mobley

IPC: G01R31/50 ,  G01R31/62 ,  G01R31/3185

Abstract: The present disclosure pertains to systems and methods for monitoring and protecting an electric power system. In one embodiment, a system may comprise line-mounted wireless current transformers to measure at least one parameter of an alternating current (AC), receive a synchronization signal at which to measure the AC, and send a message comprising the measured AC. The system may also comprise an intelligent electronic device (IED) to send the synchronization signal to and receive the messages from the line-mount wireless current transformers, determine whether a high-impedance fault (HiZ) exists between the line-mounted wireless current transformers, and implement a control action based on the existence of the HiZ fault.