Thank you Carlos for the information. As in Case 9, all bus voltage is specified to be 345 kV. If the transformer defaults ratio is 1:1, does it mean that the generator is connected in 345 kV as well? Thank you.
Best regards, Ahmad On Thu, 7 Jul 2022 at 08:55, Carlos E Murillo-Sanchez < [email protected]> wrote: > Ahmad Bariq Al Fahri wrote: > > I would like to ask about case9.m (9 bus, 3 generators case) system > configuration. As I know that the parameters of 'TAP' (column 9) in the > branch data are set to zero, does it mean that the system does not consider > transformer modelling? Is the generator directly connected to the 345 kV > bus? I am looking forward to your reply. Thank you in advance. > > Best regards, > > Ahmad > > Dear Ahmad: > > In MATPOWER, if the TAP column has a zero, then the ratio defaults to 1:1, > in the sense that 1 pu at the "FROM" end produces 1 pu at the "TO" end of > the ideal transformer in the generalized branch model. Indeed, if you > assign 1.0 to the TAP column you will get the same results. > > Carlos. > >
