公开(公告)号：US10782328B2

公开(公告)日：2020-09-22

申请号：US16124600

申请日：2018-09-07

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Hamza Abubakari ,  Tovah Whitesell ,  Manodev J. Rajasekaran ,  Cody Browne ,  Gabriel DeRuwe ,  David J. Dolezilek ,  Karen S J Wyszczelski

IPC: G01R21/133 ,  G01R35/00 ,  H02J13/00

Abstract: A single point to modify a behavior of intelligent electronic devices (IEDs) between active and testing modes is disclosed herein. The IED may include a variety of logical nodes, each with a behavior object related to the active or testing mode behavior of the IED. A single testing mode selection point of the IED is used to modify each of the logical nodes to change between active and testing modes. The testing mode selection point may be a logical input. The testing mode selection point may be a physical switch on the IED.

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.

公开(公告)号：US20140211624A1

公开(公告)日：2014-07-31

申请号：US14094211

申请日：2013-12-02

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Manodev J. Rajasekaran ,  David M. Rector ,  Damian Sanchez Moreno ,  M. Wesley Kunzler ,  Srinivas Achanta ,  Jerry J. Bennett ,  Ian C. Ender

IPC: H04L12/835

CPC classification number: H04L47/30 ,  H04L47/29 ,  H04L49/10

Abstract: Disclosed is a network communication switch that facilitates reliable communication of high priority traffic over lower priority traffic across all ingress and egress ports. The network communication switch may monitor the frame storage buffer regardless of egress port, and when the frame storage buffer reaches a predetermined level, the switch may discard lower priority frames from the most congested port. When the frame storage buffer reaches a second predetermined level, the switch may discard lower priority frames before they are stored according to egress port. The network communication switch may further monitor ingress frames for priority, and assign priority to frames according to pre-assigned priority, ingress port, and/or frame contents.

Abstract translation: 公开了一种网络通信交换机，其便于通过所有入口和出口端口的较低优先级业务的高优先级流量的可靠通信。 网络通信交换机可以监视帧存储缓冲器而不管出口端口，并且当帧存储缓冲器达到预定级别时，交换机可以丢弃来自最拥塞端口的较低优先级帧。 当帧存储缓冲器达到第二预定级别时，交换机可以在根据出口端口存储之前丢弃较低优先级的帧。 网络通信交换机可以进一步监控入口帧的优先级，并根据预分配的优先级，入口端口和/或帧内容来分配优先级。