The branch model is as shown in Figure 3-1 in the User’s Manual
<http://www.pserc.cornell.edu/matpower/manual.pdf>, so it is the voltage at the
“TO” bus that is relevant for the pi-model parameters.
Ray
> On Jan 4, 2015, at 8:46 PM, Vladimir Frolov <[email protected]>
> wrote:
>
> Hi all!
>
> am I right that line parameters which are given in various cases are in PU.
>
> and in order to recalculate them to resistance I firstly should find
> z_base=V_base^2/baseMVA.
>
> and then:
>
> r=r_pu*z_base,
>
> for example.
>
> what if I have different base voltage at the ends of the line?
>
> Best,
> Vladimir
>
