REDUNDANT COMPUTERS AND COMPUTER COMMUNICATION NETWORKS IN A HIGH-VOLTAGE POWER TRANSMISSION SYSTEM

摘要

A method for sending signals from an active computer in a high-voltage power transmission system including active protection computers and active and standby control computers in a hierarchical structure having at least two hierarchical levels. A high-voltage power transmission system and a control station for at least a part of such a transmission system. In the system all computers on the various hierarchical levels are connected to at least two separate computer communication networks. An active computer sends signals that are to be received by at least one other computer at the same or another hierarchical level simultaneously on the two separate computer communication networks to which it is connected.