Iec 60870-5-103 Communication Protocol; Application - ABB RELION 670 Series Applications Manual

Section 19
Station communication
19.6

IEC 60870-5-103 communication protocol

19.6.1

Application

IED
IEC05000660 V4 EN-US
Figure 393: Example of IEC 60870-5-103 communication structure for a substation
IEC 60870-5-103 communication protocol is mainly used when a protection IED communicates
with a third party control or monitoring system. This system must have software that can
interpret the IEC 60870-5-103 communication messages.
When communicating locally in the station using a Personal Computer (PC) or a Remote
Terminal Unit (RTU) connected to the Communication and processing module, the only
hardware needed is optical fibers and an opto/electrical converter for the PC/RTU, or a RS-485
connection depending on the used IED communication interface.
Functionality
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 IEC60870 standard part 5:
Transmission protocols, and to the section 103, Companion standard for the informative
interface of protection equipment.
Design
General
The protocol implementation consists of the following functions:
• Event handling
• Report of analog service values (measurands)
• Fault location
• Command handling
684
Station HSI
Star coupler
IED
automation system
TCP/IP
Control Center
Gateway
IED
IEC05000660-4-en.vsd
1MRK 504 152-UEN B
IP14615-1 v2
IP14864-1 v1
M17109-3 v6
M17109-38 v2
M17109-41 v1
M17109-43 v2
Application manual