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(Y-connected)
(Delta-connected)
Figure 4: Three-phase transformer parameters
We will build the stubline 3-phase transformer using single-phase transformer using pu
units. Since we will also use pu-based differential stubline (a stubline with no built-in ground
referentials), appropriate single-phase per-unit bases have to be found. First, the total 3phase nominal power has to be divided by 3 when configuring single-phase transformer
inside. Secondly, the 3-phase winding voltage takes into account the connection type (Y or
Delta) in the voltage specification while single-phase transformer has no such thing. Third,
the R-L pu specification of a 3-phase transformer are specified as ’Y-connection equivalent
values’.
In the final, the resulting single phase transformer therefore has the following parameters:
ARTEMIS User’s Guide
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