公开(公告)号：US20220263310A1

公开(公告)日：2022-08-18

申请号：US17670864

申请日：2022-02-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Brett Mitchell Cockerham ,  Ritwik Chowdhury ,  John C. Town

IPC: H02H7/22 ,  H02H1/00 ,  H02J3/00

Abstract: Systems and methods are described herein to detect an open-phase condition associated with an inverter-based resource for electric power generation within an electric power delivery system. An electric power delivery system may include one or more inverter-based resources that provide three phased electric power to one or more loads of an electric utility. A controller may include circuitry to measure voltage unbalances between different phases, high voltage sequences, phase voltage waveform harmonic distortions, voltage levels, and current levels to dependably detect an open-phase condition of the electric power delivery system.

公开(公告)号：US11735908B2

公开(公告)日：2023-08-22

申请号：US17670864

申请日：2022-02-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Brett Mitchell Cockerham ,  Ritwik Chowdhury ,  John C. Town

IPC: H02H7/22 ,  H02J3/00 ,  H02H1/00

CPC classification number: H02H7/22 ,  H02H1/0007 ,  H02J3/0012

Abstract: Systems and methods are described herein to detect an open-phase condition associated with an inverter-based resource for electric power generation within an electric power delivery system. An electric power delivery system may include one or more inverter-based resources that provide three phased electric power to one or more loads of an electric utility. A controller may include circuitry to measure voltage unbalances between different phases, high voltage sequences, phase voltage waveform harmonic distortions, voltage levels, and current levels to dependably detect an open-phase condition of the electric power delivery system.