Schweitzer Engineering Laboratories, Inc.

Johnny J Moore

Raymond W Rice

Timothy M Minteer

David Kenny

Edmund O Schweitzer, Iii

James Mobley

Eric M Sawyer

Naiden K Spasov

Brett Taggart

Benjamin T Rowland

Lyssa W Blood

Joe Baylon

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.

Multiphase power-harvesting sensor devices and systems

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.

Electric field powered devices in electric power systems

Growing community of inventors

Moscow, ID, United States of America

Johnny J Moore