公开(公告)号：US11031812B1

公开(公告)日：2021-06-08

申请号：US17144283

申请日：2021-01-08

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Edmund O. Schweitzer, III ,  Joe Baylon ,  Timothy M. Minteer ,  David Kenny ,  James Mobley ,  Johnny J. Moore ,  Raymond W. Rice ,  Naiden K. Spasov ,  Eric M. Sawyer

IPC: H02J13/00 ,  G01R31/40

Abstract: The present disclosure relates to powering distributed sensors used to monitor electrical and/or environmental conditions and to powering other equipment associated with electric power systems. In one embodiment, a system may be used to mount a sensor in proximity to a reference conductor. An electric field power conversion subsystem may generate a usable electric potential from an electric field created by the electric power system and existing between the reference conductor and another conductor (e.g., another phase conductor, a ground conductor). The sensor powered by the usable electric potential may provide a measurement of a condition associated with the electric power system. A communication subsystem powered by the usable electric potential may communicate the measurement of the condition to a monitoring system.

公开(公告)号：US20240312688A1

公开(公告)日：2024-09-19

申请号：US18183710

申请日：2023-03-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Timothy M. Minteer ,  David Kenny ,  Johnny J. Moore ,  Raymond W. Rice ,  Benjamin T. Rowland ,  Lyssa W. Blood ,  Brett Taggart

IPC: H01F27/06 ,  G01R21/00 ,  H01F27/29 ,  H01F38/28 ,  H02J50/00

CPC classification number: H01F27/06 ,  G01R21/00 ,  H01F27/29 ,  H01F38/28 ,  H02J50/001

Abstract: A current transformer (CT) isolation clamp is mounted to a phase conductor and includes a step-down CT transformer and a passive isolation transformer. A three-phase power-harvesting sensor system includes a plurality of CT isolation clamps mounted to phase conductors in a three-phase power system. An electronics module is connected to the CT isolation clamps. The electronics module may include a sensing circuit to determine power characteristics of the three-phase power system based on the outputs of the CT isolation clamps. The electronics module may include a communication subsystem to transmit the determined power characteristics to local or remote devices. Additionally, the electronics module may include a power harvesting circuit to harvest power to operate the sensing circuit and the communication subsystem.