Ray, Bus 92 was missing. I have f 400 kV , 220 kV, 132 kv , 66 kV, 33 kV and 11kV voltage levels. How do you model three winding transformers?
i have the following error after running pf Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Warning: Matrix is singular to working precision. > In newtonpf (line 89) In runpf (line 204) Newton's method power flow did not converge in 10 iterations. >>>>> Did NOT converge (0.17 seconds) <<<<< On Wed, Nov 27, 2019 at 7:13 PM Ray Zimmerman <[email protected]> wrote: > Do you have some bus numbers (either in the bus or branch matrix) that > are not positive integers? > > Ray > > > On Nov 27, 2019, at 6:14 AM, Winnie apiyo <[email protected]> wrote: > > Good evening Ray, > It is now running but with this error: > Array indices must be positive integers or logical values. > > Error in ext2int (line 148) > bs(n2i(mpc.branch(:, F_BUS))) & ... > > Error in runpf (line 109) > mpc = ext2int(mpc); > > On Tue, Nov 26, 2019 at 10:58 PM Ray Zimmerman <[email protected]> wrote: > >> You’ll have to show us exactly what commands you are using to attempt to >> run it. It sounds like you may be calling runpf(mpc) without first >> loading the case into mpc. Normally, you’d do something like … >> >> mpc = loadcase('case118'); >> results = runpf(mpc); >> >> … or simply … >> >> results = runpf('case118'); >> >> Hope this helps, >> >> Ray >> >> >> On Nov 26, 2019, at 12:18 PM, Winnie apiyo <[email protected]> >> wrote: >> >> It is only running with no results. mpc empty , undefined function or >> variable mpc. I have been troubleshooting with no results. What are the >> possible mistakes? >> >> Sent from my iPhone >> >> On 26 Nov 2019, at 20:26, Ray Zimmerman <[email protected]> wrote: >> >> There is no explicit limit to the size. Power flow for a 582 bus case >> should be extremely fast, only a fraction of a second. On my 5 yr old >> laptop a 13,000 bus system solves in ~0.3 sec. >> >> Ray >> >> On Nov 24, 2019, at 3:12 PM, Winnie apiyo <[email protected]> >> wrote: >> >> Thank you >> >> Sent from my iPhone >> >> On 24 Nov 2019, at 21:54, Abhay Kumar <[email protected]> wrote: >> >> A list of test cases are available in Appendix D (Table D-18 to Table >> D-23) of the MATPOWER user manual >> <https://matpower.org/docs/MATPOWER-manual.pdf> I’m not sure if there >> is a limit but MATPOWER can definitely handle 582 buses. >> >> >> >> >> [image: Michigan Tech] >> Abhay Kumar >> >> Graduate Teaching Assistant | Michigan Tech | Dept of ECE >> E: [email protected] >> A: EERC 617, 1400 Townsend Dr Houghton MI 49931 >> >> On Nov 24, 2019, at 1:33 PM, Winnie apiyo <[email protected]> >> wrote: >> >> good evening, >> What is the maximum number of buses that can be run in MATPOWER.? I have >> 582 buses and can't run power flow or it is just taking long to run >> regards >> >> >> >> >> >
