公开(公告)号：US08981951B2

公开(公告)日：2015-03-17

申请号：US13504482

申请日：2009-11-05

申请人： Sankara Subramanian ,  Simon Richards ,  Alan Wixon

发明人： Sankara Subramanian ,  Simon Richards ,  Alan Wixon

IPC分类号： G08B21/00 ,  H02H7/30 ,  H02H3/00

CPC分类号： H02H7/30 ,  H02H3/006

摘要： A method of monitoring the grading margin between at least two time-current characteristics of Intelligent Electronic Devices (IEDA, IEDB) installed in an electrical power system, each Intelligent Electronic Device comprising a counting means, the grading margin comprising a safety margin set by a user, characterized in that it comprises, when a fault occurs which causes a fault current in the electrical power system, a step of providing a warning to the user when the safety margin is infringed upon.

摘要翻译： 一种监视安装在电力系统中的智能电子设备（IEDA，IEDB）的至少两个时间电流特性之间的分级余量的方法，每个智能电子设备包括计数装置，所述分级余量包括由 用户，其特征在于，当发生导致电力系统中的故障电流的故障时，包括当安全边际被侵害时向用户提供警告的步骤。

公开(公告)号：US20120212348A1

公开(公告)日：2012-08-23

申请号：US13504482

申请日：2009-11-05

申请人： Sankara Subramanian ,  Simon Richards ,  Alan Wixon

发明人： Sankara Subramanian ,  Simon Richards ,  Alan Wixon

IPC分类号： G08B21/00

CPC分类号： H02H7/30 ,  H02H3/006

摘要： A method of monitoring the grading margin between at least two time-current characteristics of Intelligent Electronic Devices (IEDA, IEDB) installed in an electrical power system, each Intelligent Electronic Device comprising a counting means, the grading margin comprising a safety margin set by a user, characterized in that it comprises, when a fault occurs which causes a fault current in the electrical power system, a step of providing a warning to the user when the safety margin is infringed upon.

摘要翻译： 一种监测安装在电力系统中的智能电子设备（IEDA，IEDB）的至少两个时间电流特性之间的分级余量的方法，每个智能电子设备包括计数装置，所述分级余量包括由 用户，其特征在于，当发生导致电力系统中的故障电流的故障时，包括在安全边际被侵害时向用户提供警告的步骤。