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Interconnected
electric power systems exist in different
parts of the world. They differ in
size, whether in total generating
capacity or in geographic area covered.
Some of the systems operate within
the political boundaries of a certain
country while others include more
than one country.
The advantages of the power systems
interconnection are well known and
we are not going to repeat whatever
has been said or proven in this field
There are certain technical and economical
limits for the size of the interconnections
systems. However extending the size
or the surface area covered may have
some advantages tot he systems at
the peripheries of the interconnected
system. Certain advantages may also
be gained by connecting two neighbouring
interconnected systems
Ways and means have been developed
to everyone the technical limits of
synchronous interconnection. These
include the direct current (d.c.)
links and the flexible alternating
current transmission system (FACTS).
With these developments, neighboring
synchronous interconnected systems
are being advantages of interconnection,
mainly the exchange of reserve during
emergencies and the transfer of low
cost energy from one system to it's
neighbours. Other synchronous interconnections
and flexible links are being studied.
investigated or are are still in future
vision.
It is the hope of many power system
engineers that a worldwide power system
is realized, whether synchronously
or flexibly interconnected. Low cost
electric energy and peak time power
could be transferred from one part
of the world to the other.
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