System Structure - ABB REM 543 Technical Reference Manual

ABB Network Partner
4.1.10.4.
Page 42
REM 543 Protection,
Monitoring and Control

System structure

The system very often resembles the system in the figure below. Generator or motor
feeders are protected and controlled with REM 543 machine terminals. Some protec-
tion, control or alarm functions are implemented by using REF 54_ feeder terminals,
SPACOM units or other SPA bus devices (devices connected to the system via the SPA
bus). LON devices made by other manufacturers or other ABB companies may be used
for various BI, AI and BO functions. MicroSCADA is used for local control.
MicroSCADA
ABB Network Partner
RER 111 LON
star-coupler
Fibre-optic
LON network
I I
0 0
F F
C C
E E
RE_ 54_ protection
terminals connected
using RER 103
fibre-optic adapters
Fig. 4.1.10.4.-1. Example of a LON-based substation automation system.
In the system described in the figure above, the communication is usually arranged as
shown in the table below.
Data type
Events and alarms
Control commands
Status of breakers and
isolators
Analogue measurement
values
Other BI, AI, data
Other BO, AO data
Parameter data
Technical Reference Manual
PCLTA card and
RER 107 inside PC
Router card in
RER 111 LON
star-coupler
SPA bus
SPAC 331 C SPAC 331 C
I
O
SPA bus modules connected
using LON/SPA-gateways
REM <-> MicroSCADA
sliding window protocol
transparent SPA bus messages
sliding window protocol
sliding window protocol
sliding window protocol
transparent SPA bus messages
transparent SPA bus messages
Part 1, General
Electrical LON
network
SPA bus
I
O
DI, AI and DO modules
"LonMark devices"
REM, LSG and LonMark
devices to each other
-
-
network variables
network variables
network variables
network variables
-
lonsys