The tap ratio is the off-nominal tap ratio, relating per-unit voltages, not kV voltages. So if both voltages are at their nominal values (i.e. both at 1 p.u.) then the TAP should be 1 and SHIFT should be 0.
Ray > On Oct 17, 2017, at 6:23 AM, Ahmad Sadiq Abubakar > <[email protected]> wrote: > > Hi, all > For a given case branch data r, x, b, assuming the branch is a transformer, > between bus1 and bus2, with voltages V1 and V2 KV respectively. How do I > obtain the Tap ration (column 9) and shift (column 10) of the branch matrix? > > I have simply used V1/V2 as the Tap ration while the shift is zero, however, > the power flow did not converged. Am I missing something? > > Kindly assist > > best regrads > A. A. Sadiq >
