Message transmission method for dual-network redundant message bus in cross failure

The invention discloses a method capable of transmitting messages of a dual-network redundant message bus in cross failure, wherein the method is applied to a power dispatching automation system architecture. By interacting heartbeat state and adjacency information and building a message forwarding path, the messages are transmitted through an intermediate agent node. The method solves the problem that physical network cross connection and IP (internet protocol) address configuration are limited when cross failure of a previous dual-network redundant message bus is handled, and the requirements of a power dispatching automation system on dual-network redundancy and disaster recovery for reserve are met. Besides, the method conforms to an existing network transmission structure, and the structure is more flexible and convenient to construct.