TUNNELLING TIME-CRITICAL MESSAGES BETWEEN SUBSTATIONS OVER WAN,申请号EP20150702800-传众专利搜索

TUNNELLING TIME-CRITICAL MESSAGES BETWEEN SUBSTATIONS OVER WAN

申请公布号：EP3114802(A1)

申请号：EP20150702800

申请日期：2015.02.06

申请公布日期：2017.01.11

申请人：

ABB Schweiz AG

发明人：SIVANTHI, Thanikesavan;WIDMER, Theo;CACHIN, Dominique;LEEB, Christian;MAAG, Hans-Joerg;BAG, Gargi;PALM, Johan;THRYBORN, Linus

分类号：H04L12/46

主分类号：H04L12/46

摘要：The present invention discloses a method of transmitting time-critical messages in an OSI layer 2 network tunnel from an IED in a first substation to an IED in a second substation over a WAN, wherein each of the first and second substation comprises an edge IED and is associated with a substation LAN, wherein each of the time-critical messages comprises message parameters. The method comprises the steps of: a) creating a translation table comprising corresponding values of the message parameters, between the LANs and the WAN, b) defining a virtual IED model in the second substation using the translated values of the message parameters, to impersonate the IED of the first substation, c) translating the message parameters according to the translation table, d) forwarding the time-critical messages from the IED in the first substation to the WAN, and e) receiving the time-critical messages by the IED of the second substation from the WAN.