Dear all, Hi, sorry for contacting again, I just make the P and Q loads of the bus 10 times bigger because I put the data wrong at first, but it can not run and I don't know why. Can anyone help me? thank you. Here I attach my program again. *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 17:49, Ilias Sarantakos <[email protected]> wrote: > 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 < > [email protected]> 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 <[email protected]> >> 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 <[email protected]> >>> 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 <[email protected]> >>>> 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 <[email protected]> >>>>> 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 < >>>>>> [email protected]> 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 >>>>>>> >>>>>>
swarm64.m
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case64.m
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main64.m
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branch64.xls
Description: MS-Excel spreadsheet
bus64.xls
Description: MS-Excel spreadsheet
