Environmental Engineering Reference
In-Depth Information
Clock entry
End of input
Clock entry 2
Y
Initiate data
input
Dump process
image
System
live:=0
System
live?
Resume
Tranmsmit
„system live”
N
Resume
Recorver
process
image
Resume
High priority
Initial
SOSAPI
pass
Applications
(PUC's)
Process
image
Service
station
Resume
Restart watchdog
SOSAPI
Low priority
Fig. 8.7
General architecture of SOSAPI operating system
5.4
Visual Display System for Power Industry Applications
The available imported SVDU (semigraphic visual display unit) clusters were very
good from the technical point of view, but their cost was too high for use in SAPI
ODM applications other than regional power distribution boards. Therefore,
Leading Designer 4 led the project for the development of the first Polish two-
computer online coupled system operating SVDUs (see Fig.
8.8
). The system was
successfully applied in a power grid training simulator, power-generating unit mon-
itor and computer systems testing laboratory, amongst other applications.
While waiting for the Odra 1325 computer for SAPI ODM, Leading Designer 4
led a test project of the first Polish PGUM (power-generating unit monitor), which
was implemented and tested on a 200 MW power-generating unit (Fig.
8.9
).
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