Patent ID: 8532144

Claim:
A method of transmitting data related to control of transmission of power in a high voltage power transmission system from a first AC (Alternating Current) power line to a second AC power line or vice versa, the method comprising: providing a first frame of data including data symbols according to a frame structure, said frame structure including sections for data symbols containing measurement samples and sections for data symbols containing field bus type of data, inserting synchronization data into said first frame in the form of control symbols, distinctively separated from the data symbols, sending said first frame from a first device to a second device in a point-to-point connection, wherein the first device comprises a computer for at least one of control or protection and the second device comprises a control and measurement node, and synchronizing control activities in the transmission of power in the high voltage power transmission system from a first AC power line to a second AC power line or vice versa, wherein the synchronizing is performed by the second device utilizing said synchronization data, wherein the data symbols are provided through 8B/10B coding of measurement samples and field bus type data, and wherein the control symbols are control symbols of the 8B/10B coding.