Hi Nitya, I tried your network and it converged; I am using MATPOWER 6.1.
Kind regards, Ilias Sarantakos PhD Student Newcastle University UK Στις Τρί, 9 Απρ 2019 στις 9:19 π.μ., ο/η Nitya Kirana < nityakirana...@gmail.com> έγραψε: > Dear Fiaz Ahmad, > > I actually have run the simulation for IEEE 33 bus, 16 bus, and 69 bus > using Newton Raphson method and the result is convergen. And also in IEEE > 33 bus it has the ratio R/X greater than mine, so I just think that the > problem is not the Newton Raphson method. Anw, thank you for your > recommendation. > > > *Best Regards, * > > *Putu Diah Nitya Kirana,* > > Assistant and Researcher at Electric Energy Conversion Laboratory B101 > Electrical Engineering Department > Faculty of Electrical Technology > Institut Teknologi Sepuluh Nopember > Surabaya, Indonesia > > +62 8170 3178 248 > > > > On Tue, 9 Apr 2019 at 11:54, Fiaz Ahmad <fiazah...@sabanciuniv.edu> wrote: > >> Dear Nitya use forward-backward sweep algorithm for the power flow of >> this system. >> >> >> Have a nice day >> >> Regards, >> DR. FIAZ AHMAD >> PhD Mechatronics Engineering (Sabanci University, Istanbul Turkey), >> Mob: 0092-332-9124525, >> >> >> >> >> >> >> On Tue, Apr 9, 2019 at 9:51 AM Nitya Kirana <nityakirana...@gmail.com> >> wrote: >> >>> Dear Fiaz Ahmad, >>> >>> Okay thank you, so what's your recommendation for this power system >>> analysis method? >>> *Best Regards,* >>> >>> *Putu Diah Nitya Kirana,* >>> >>> Assistant and Researcher at Electric Energy Conversion Laboratory B101 >>> Electrical Engineering Department >>> Faculty of Electrical Technology >>> Institut Teknologi Sepuluh Nopember >>> Surabaya, Indonesia >>> >>> +62 8170 3178 248 >>> >>> >>> >>> On Tue, 9 Apr 2019 at 01:04, Fiaz Ahmad <fiazah...@sabanciuniv.edu> >>> wrote: >>> >>>> Normally Newton Raphson method doesn't converge for distribution >>>> systems due to high r/x ratios >>>> >>>> On Mon, Apr 8, 2019, 22:48 Carlos A. Castro <ccas...@unicamp.br> wrote: >>>> >>>>> Dear Nitya >>>>> >>>>> I would do two things: >>>>> >>>>> 1. I would replace all commas "," by points "." in the data file. >>>>> >>>>> 2. I would try to draw the one line diagram of the network based on >>>>> the data, to check whether the network is all connected, that is, that >>>>> there are no isolated buses or group of buses, >>>>> >>>>> Good luck, >>>>> >>>>> Carlos >>>>> >>>>> >>>>> Em seg, 8 de abr de 2019 às 14:42, Nitya Kirana < >>>>> nityakirana...@gmail.com> escreveu: >>>>> >>>>>> Dear all, >>>>>> >>>>>> I have run the power flow of 64 radial test bus system using Newton >>>>>> Raphson in Matpower 4.1. It shows the result of power losses but it >>>>>> doesn't converge, whenever I run the matlab, the result is always >>>>>> different, and I don't know what's the problem. Can anyone help me? >>>>>> because >>>>>> this is my final project. It shows "Warning: Matrix is singular to >>>>>> working precision." >>>>>> >>>>>> So, here is my data : >>>>>> >>>>>> bus data >>>>>> bus type Pd Qd Gs Bs >>>>>> area Vm Va baseKV zone Vmax Vmin >>>>>> 1 3 0 0 0 0 1 1 0 20 1 1 0,9 >>>>>> 2 3 0 0 0 0 1 1 0 20 1 1 0,9 >>>>>> 3 3 0 0 0 0 1 1 0 20 1 1 0,9 >>>>>> 4 1 0,0136 0,016256 0 0 1 1 0 20 1 1 0,9 >>>>>> 5 1 0,0204 0,024384 0 0 1 1 0 20 1 1 0,9 >>>>>> 6 1 0 0 0 0 1 1 0 20 1 1 0,9 >>>>>> 7 1 0,07684 0,091846 0 0 1 1 0 20 1 1 0,9 >>>>>> 8 1 0,02856 0,034138 0 0 1 1 0 20 1 1 0,9 >>>>>> 9 1 0,03808 0,045517 0 0 1 1 0 20 1 1 0,9 >>>>>> 10 1 0,0238 0,028448 0 0 1 1 0 20 1 1 0,9 >>>>>> 11 1 0,01768 0,021133 0 0 1 1 0 20 1 1 0,9 >>>>>> 12 1 0,017 0,02032 0 0 1 1 0 20 1 1 0,9 >>>>>> 13 1 0,022304 0,02666 0 0 1 1 0 20 1 1 0,9 >>>>>> 14 1 0,0204 0,002438 0 0 1 1 0 20 1 1 0,9 >>>>>> 15 1 0,05848 0,069901 0 0 1 1 0 20 1 1 0,9 >>>>>> 16 1 0,26384 0,315366 0 0 1 1 0 20 1 1 0,9 >>>>>> 17 1 0,03774 0,04511 0 0 1 1 0 20 1 1 0,9 >>>>>> 18 1 0,0204 0,002438 0 0 1 1 0 20 1 1 0,9 >>>>>> 19 1 0,05576 0,06665 0 0 1 1 0 20 1 1 0,9 >>>>>> 20 1 0,0136 0,016256 0 0 1 1 0 20 1 1 0,9 >>>>>> 21 1 0,0306 0,016256 0 0 1 1 0 20 1 1 0,9 >>>>>> 22 1 0,0204 0,024384 0 0 1 1 0 20 1 1 0,9 >>>>>> 23 1 0,0272 0,032512 0 0 1 1 0 20 1 1 0,9 >>>>>> 24 1 0,11764 0,140614 0 0 1 1 0 20 1 1 0,9 >>>>>> 25 1 0,0068 0,008128 0 0 1 1 0 20 1 1 0,9 >>>>>> 26 1 0,0136 0,016256 0 0 1 1 0 20 1 1 0,9 >>>>>> 27 1 0,0238 0,028448 0 0 1 1 0 20 1 1 0,9 >>>>>> 28 1 0,112948 0,135006 0 0 1 1 0 20 1 1 0,9 >>>>>> 29 1 0,02176 0,02601 0 0 1 1 0 20 1 1 0,9 >>>>>> 30 1 0 0 0 0 1 1 0 20 1 1 0,9 >>>>>> 31 1 0,01768 0,021133 0 0 1 1 0 20 1 1 0,9 >>>>>> 32 1 0,05168 0,061773 0 0 1 1 0 20 1 1 0,9 >>>>>> 33 1 0,03468 0,041453 0 0 1 1 0 20 1 1 0,9 >>>>>> 34 1 0,02856 0,034138 0 0 1 1 0 20 1 1 0,9 >>>>>> 35 1 0,0272 0,032512 0 0 1 1 0 20 1 1 0,9 >>>>>> 36 1 0,01768 0,021133</fon >>>>>> >>>>>
