公开(公告)号：US20110069421A1

公开(公告)日：2011-03-24

申请号：US12994450

申请日：2009-05-29

申请人： Jean Marmonier

发明人： Jean Marmonier

IPC分类号： H02H9/02

CPC分类号： H02H3/302 ,  H02H1/0061

摘要： A method and a differential protection apparatus for an electrical link in a medium, high or very high voltage power distribution network. This method, in which two differential protection devices are disposed at the two ends (A, B) of said link, includes a step during which a comparison is made between the current measured locally and the current measured remotely, after said devices have been resynchronized by phase shifting the data received from the end situated remotely by one half of the sum of the outward and return propagation times; and a second step during which, if an angular phase difference is found to exist between two currents after resynchronization, automatic compensation is effected by servocontrolling the angle of the current vectors.

摘要翻译： 一种用于介质，高压或超高压配电网中的电气连接的方法和差动保护装置。 在所述链路的两端（A，B）设置有两个差动保护装置的方法包括在所述装置重新同步之后，在本地测量的电流与远程测量的电流之间进行比较的步骤 通过将从远程位置接收到的数据相移到向外传播时间和返回传播时间之和的一半， 以及第二步骤，如果在再同步之后发现两个电流之间存在角度相位差，则通过伺服控制电流矢量的角度来实现自动补偿。

公开(公告)号：US08462476B2

公开(公告)日：2013-06-11

申请号：US12994450

申请日：2009-05-29

申请人： Jean Marmonier

发明人： Jean Marmonier

IPC分类号： H02H3/00

CPC分类号： H02H3/302 ,  H02H1/0061

摘要： A method and a differential protection apparatus for an electrical link in a medium, high or very high voltage power distribution network. This method, in which two differential protection devices are disposed at the two ends (A, B) of said link, includes a step during which a comparison is made between the current measured locally and the current measured remotely, after said devices have been resynchronized by phase shifting the data received from the end situated remotely by one half of the sum of the outward and return propagation times; and a second step during which, if an angular phase difference is found to exist between two currents after resynchronization, automatic compensation is effected by servocontrolling the angle of the current vectors.

摘要翻译： 一种用于介质，高压或超高压配电网中的电气连接的方法和差动保护装置。 在所述链路的两端（A，B）设置有两个差动保护装置的方法包括在所述装置重新同步之后，在本地测量的电流与远程测量的电流之间进行比较的步骤 通过将从远程位置接收到的数据相移到向外传播时间和返回传播时间之和的一半， 以及第二步骤，如果在再同步之后发现两个电流之间存在角度相位差，则通过伺服控制电流矢量的角度来实现自动补偿。