<s>
Electrical	B-Application
Transient	I-Application
Analyzer	I-Application
Program	I-Application
(	O
ETAP	O
)	O
is	O
an	O
electrical	O
network	O
modeling	O
and	O
simulation	O
software	O
tool	O
used	O
by	O
power	O
systems	O
engineers	O
to	O
create	O
an	O
"	O
electrical	O
digital	B-General_Concept
twin	I-General_Concept
"	O
and	O
analyze	O
electrical	O
power	O
system	O
dynamics	O
,	O
transients	O
and	O
protection	O
.	O
</s>
<s>
While	O
Dr.	O
Shokooh	O
worked	O
at	O
Fluor	O
Corporation	O
he	O
was	O
made	O
in	O
charge	O
of	O
selecting	O
electrical	O
engineering	O
software	B-Application
.	I-Application
</s>
<s>
Realizing	O
a	O
lack	O
of	O
comprehensive	O
,	O
efficient	O
and	O
intelligent	O
power	O
system	O
analysis	O
software	O
,	O
the	O
vision	O
of	O
Electrical	B-Application
Transient	I-Application
Analyzer	I-Application
Program	I-Application
(	O
ETAP	O
)	O
was	O
born	O
.	O
</s>
<s>
Power	O
system	O
simulation	O
requires	O
an	O
electrical	O
digital	B-General_Concept
twin	I-General_Concept
consisting	O
of	O
a	O
power	O
system	O
network	O
model	O
that	O
includes	O
system	O
connectivity	O
,	O
topology	O
,	O
electrical	O
device	O
characteristics	O
,	O
historical	O
system	O
response	O
and	O
real-time	O
operations	O
data	O
in	O
order	O
to	O
make	O
offline	O
or	O
online	O
decisions	O
.	O
</s>
<s>
ETAP	O
power	B-Application
engineering	I-Application
software	I-Application
utilizes	O
an	O
electrical	O
digital	B-General_Concept
twin	I-General_Concept
in	O
order	O
for	O
electrical	O
engineers	O
and	O
operators	O
to	O
perform	O
following	O
studies	O
in	O
offline	O
or	O
online	O
mode	O
.	O
</s>
