Patent · US Active

Redundant transmission of data messages for information and control for HVDC transmission systems

US8065580B2 · kind B2 · utility

0Cited by

5References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Anja Ackermann · Herzogenaurach, DE
Michael Festor · Heroldsberg, DE
Frank Greiner · Erlangen, DE

Key dates

Filing date	Jun 2, 2005
Grant date	Nov 22, 2011
Priority date	—
Expiry date	Mar 19, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L1/1858
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for securely transmitting data messages in an HVDCT system. Each transmitting unit is connected to each receiving unit via at least two connection channels. Each data message includes a message counter that uniquely characterizes the data message, and each transmitting unit transmits the data message to each receiving unit via all of the connection channels. Each receiving unit calculates a comparison counter and compares it with the message counter in the received data message. If the message counter and the comparison counter do not match, a repetition request is transmitted to the transmitting unit for the purpose of transmitting a message counter that corresponds to the comparison counter. After the repetition request has been received, the transmitting unit accesses a transmission buffer, and the data message whose message counter corresponds to the comparison counter of the repetition request is transmitted via all of the connection channels.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.