公开(公告)号：US10859611B2

公开(公告)日：2020-12-08

申请号：US15988170

申请日：2018-05-24

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Qiaoyin Yang ,  Manodev J. Rajasekaran ,  Edgar B. Cenzon

IPC: G01R19/25 ,  G01R19/145 ,  G01R19/252 ,  H02J3/00 ,  H02J13/00

Abstract: Disclosed herein are systems and methods of calculating and mitigating time delays for electric power system samples received by remote data acquisition unit (RDAU), digitized, and transmitted to a receiving intelligent electronic device (IED). The IED may calculate time delays for various RDAUs, and establish wait windows for certain protection operations based on the samples needed for the protection operation and the calculated time delays for the various RDAUs. The IED may detect and report system or time signal anomalies based on changes to the calculated time delays from particular RDAUs.

公开(公告)号：US20180348267A1

公开(公告)日：2018-12-06

申请号：US15988170

申请日：2018-05-24

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Qiaoyin Yang ,  Manodev J. Rajasekaran ,  Edgar B. Cenzon

IPC: G01R19/25 ,  G01R19/252 ,  G01R19/145

Abstract: Disclosed herein are systems and methods of calculating and mitigating time delays for electric power system samples received by remote data acquisition unit (RDAU), digitized, and transmitted to a receiving intelligent electronic device (IED). The IED may calculate time delays for various RDAUs, and establish wait windows for certain protection operations based on the samples needed for the protection operation and the calculated time delays for the various RDAUs. The IED may detect and report system or time signal anomalies based on changes to the calculated time delays from particular RDAUs.