Data transmission device for remote monitoring and remote controlling in a distributed process system

• US 9,544,165 B2
• Filed: 12/02/2011
• Issued: 01/10/2017
• Est. Priority Date: 06/04/2009
• Status: Active Grant

• Current Assignee: Hitachi Energy Limited (Hitachi, Ltd.)
• Original Assignee: ABB Schweiz AG (ABB Limited)
• Inventors: Gross, Peter
• Primary Examiner(s): Parry, Chris
• Assistant Examiner(s): Chou, Alan S
• Application Number:
  US13/310,561
• Publication Number:
  US 20120131122A1
• Time in Patent Office: 1,866 Days
• Field of Search: 709/208
• US Class Current: 1/1
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/4026 Bus for use in automation systems
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion

Abstract

A data transmission device remotely monitors and controls a distributed process system, which exchanges data with a superordinate communication unit via an interface and a communication connection in accordance with the IEC 61850 standard, and which is connected to a subordinate process via a further interface and a station bus. The data transmission device includes functional units integrated therein which are implemented as interfaces for connecting the process to at least one superordinate communication unit in accordance with the IEC 61850 standard.

Claims

1. A remote terminal unit for integration and connection of a slave process in a station control system, wherein the remote terminal unit is configured to exchange data with at least one master communication unit, and is connected with the slave process,

wherein the remote terminal unit comprises functional units integrated in the remote terminal unit, the functional units being interfaces for connecting the slave process to the at least one master communication unit according to the IEC 61850 standard,

wherein the functional units include:

at least one IEC61850 server configured for connecting to at least one master communication unit;

at least one IEC61850 client configured for connecting a slave station level through a IEC61850 station bus;

at least one first unit implemented as a protocol gateway and configured for connecting to the at least one master communication unit and for connecting intelligent electronic devices by means of additional network protocols; and

at least one second unit configured for directly wiring with the slave process for connecting control and monitoring signals to the IEC61850 station bus, and

wherein the remote terminal unit comprises a configurable filter function coordinating the data exchange between the functional units.

2. The remote terminal unit according to claim 1, comprising:

at least one third unit configured for performing control tasks by means of an integrated PLC functionality.

3. The remote terminal unit according to claim 1, wherein the at least one first unit for connecting the at least one of the master communication unit and the intelligent electronic devices is configured to operate based on at least one of serial protocols and TCP/IP.

4. The remote terminal unit according to claim 1, wherein the at least one first unit is configured for connecting a non-IEC 61850 compatible electronic device to the IEC61850 station bus.

5. The remote terminal unit according to claim 4, wherein the non-IEC 61850 compatible electronic device includes at least one of an IEC 61850 station bus protective device and an IEC 61850 control device.

6. The remote terminal unit according to claim 1, wherein two IEC 61850 network station buses communicate with one another through the remote terminal unit and the functional units.

7. The remote terminal unit according to claim 1, wherein the functional units are configured to connect control and monitoring devices directly to the IEC61850 station bus.

8. The remote terminal unit according to claim 1, wherein filter rules determining the communication channel between the functional units are deposited in the configuration of the filter function.

9. The remote terminal unit according to claim 1, wherein the remote terminal unit is configured to perform data exchange with the master communication unit through a web connection.

10. The remote terminal unit according to claim 9, wherein the remote terminal unit is configured to perform the data exchange with the master communication unit by means of a TCP/IP protocol.

11. A distributed system comprising the remote terminal unit according to claim 1,

wherein the distributed system comprises at least one of a system with remote control substations, a system for station control technology, and a system of remote control nodes and communication networks, which operate based on the IEC60870 standard, and

wherein the remote terminal unit is configured to exchange data with the distributed system.