Ok. Will check that. On Tue, 22 Nov, 2022, 1:08 am Ray Daniel Zimmerman, <r...@cornell.edu> wrote:
> If you convert everything into per-unit correctly, using a different > voltage base for the different buses, it shouldn’t be a problem. I suggest > finding a good textbook on converting parameters to per-unit to make sure > you get it right, especially for the transformer. > > Ray > > > > On Nov 7, 2022, at 12:56 PM, Irfan Mujawar <irfanbudhg...@gmail.com> > wrote: > > > > I want to use the MATPOWER for load flow analysis of the practical > radial distribution system. > > In the system two voltage levels are there. > > First is 11 kV bus (Bus 1) which is slack bus. > > All other buses are of 440V bus. > > There is a transformer of 11kV/440V between bus 1 and 2. > > From bus 2 onwards are load bus. > > At some buses load is present at some buses no load is present. > > I know the values of R and X of line in ohm. > > How to perform the load flow analysis of this system having two voltage > levels with transformer? > > How to proceed. > > > > I am able to perform the load flow analysis of the system from 440V and > downstream buses i.e. with one voltage level. > > I am facing the problem when I make bus 1 as slack bus with 11 kV. > > > > When I have added the 11 kV line and performed the load flow total > losses are less than that of load flow when only 440V line and downstream > loads are present. > > > > I am not getting what is wrong. > > Please help. > > Thank you. > >
