Phase shifting transformers

[ali hassan]

In the previous topic introduced in our transformer course, I mention
that the system intertie transformers have many special types and the
common ones of these types are:

Phase shifting transformers
HVDC transformers

Today, I will introduce the first type which is the Phase shifting
transformers as follows.

Introduction:
Existing transmission systems are often operated and stressed to the
limit of their performance capability of their original design in
order to maximize asset utilization. To ensure that under these
conditions the economical, reliable and secure operation of the grid
is maintained, the need for various aspects of power flow management
within the power systems is becoming evident. Phase-shifting
transformers help control the real power flow in transmission lines
and systems interties. They allow for better utilization of existing
networks concerning load growths.

Phase shifting transformers Definition:
A phase shifting transformer is a special type of system intertie
transformers which Control the power flow through specific lines in a
complex power transmission network by providing the possibility to
insert a voltage with an arbitrary phase angle in the power system.


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http://alihassanelashmawy.blogspot.com/2012/01/phase-shiftingtransformers.html