ABB REB670 Series, Applications Manual

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17.6.1.1 Functionality
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IEC 60870-5-103 is an unbalanced (master-slave) protocol for coded-bit serial communication
exchanging information with a control system. In IEC terminology a primary station is a master
and a secondary station is a slave. The communication is based on a point-to-point principle.
The master must have software that can interpret the IEC 60870-5-103 communication
messages. For detailed information about IEC 60870-5-103, refer to IEC 60870 standard part 5:
Transmission protocols, and to the section 103, Companion standard for the informative
interface of protection equipment.
17.6.1.2 Design
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General
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The protocol implementation consists of the following functions:
• Event handling
• Report of analog service values (measurands)
• Fault location
• Command handling
•
Autorecloser ON/OFF
• Teleprotection ON/OFF
• Protection ON/OFF
• LED reset
• Characteristics 1 - 4 (Setting groups)
• File transfer (disturbance files)
• Time synchronization
Hardware
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When communicating locally with a Personal Computer (PC) or a Remote Terminal Unit (RTU)
in the station, using the SPA/IEC port, the only hardware needed is:· Optical fibers, glass/
plastic· Opto/electrical converter for the PC/RTU· PC/RTU
Commands
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The commands defined in the IEC 60870-5-103 protocol are represented in dedicated function
blocks. These blocks have output signals for all available commands according to the protocol.
For more information, refer to the
Communication protocol manual, IEC 60870-5-103.
• IED commands in control direction
Function block with defined IED functions in control direction, I103IEDCMD. This block use
PARAMETR as FUNCTION TYPE, and INFORMATION NUMBER parameter is defined for each
output signal.
• Function commands in control direction
Function block with pre-defined functions in control direction, I103CMD. This block includes
the FUNCTION TYPE parameter, and the INFORMATION NUMBER parameter is defined for each
output signal.
• Function commands in control direction
Function block with user defined functions in control direction, I103UserCMD. These function
blocks include the FUNCTION TYPE parameter for each block in the private range, and the
INFORMATION NUMBER parameter for each output signal.
1MRK 505 370-UEN D Section 17
Station communication
Busbar protection REB670 413
Application manual