Abb Schweiz Ag

Mathias Kranich

Dominique Cachin

Hermann Spiess

Christian Leeb

Michael Strittmatter

An exemplary method and system of the present disclosure use the Parallel Redundancy Protocol PRP (IEC 62439-3) for traffic duplication and redundant transport of the duplicated traffic in a single packet-switched wide-area communication network including a plurality of nodes interconnected via inter-node links in a meshed topology. The method involves identifying, between a send and receive node, two distinct communication paths with no link or node in common except for the send and receive node, and configuring the send and receive nodes to operate according to the Parallel Redundancy Protocol PRP. At any time during regular operation, and for any critical message to be transmitted from the send to the receive node, two redundant packets can be generated, and each of the redundant packets is sent via one of the two communication paths, resulting in an increased availability of the communication network without incurring the cost of full network duplication.

Utility communication method and system

In a method and a device for redundant transmission of protection commands between remote tripping devices (), useful information which represents a protection command or a rest signal is transmitted by a first remote tripping device () in at least two time slots via a first interface () to a first multiplexer (), and is transmitted via different transmission paths () by the multiplexer () based on the time slots. A second multiplexer () receives the useful information via the different transmission paths (), and transmits each useful information item via a time slot, which is allocated to the respective transmission path (), in a second interface () to a second remote tripping device ().

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Albbruck, Germany

Mathias Kranich