Mirish, You should use Qmax and Qmin for power flow as well. In Fiaze's case, if there are no other generators in his system, he should just put a fictitious generator at the substation bus and declare it a slack bus.
Jovan On Thu, May 5, 2016 at 8:05 AM, Mirish Thakur <[email protected]> wrote: > Hello Fiaz, > > If you want to perform OPF then you have to put limits on active and > reactive power generation; i.e. Pmax, Pmin, Qmax Qmin in generator matrix > column. Just try to format your case according to any sample case;e.g. > case9. You can get additional information from manual in the Table B-1 to > B-4. > > regards > Mirish > > On Thu, May 5, 2016 at 1:54 PM, Fiaz Ahmad <[email protected]> > wrote: > >> I am putting P=5000W and Q=3500VARs as a substation. How can I make P Q >> unlimited? Any suggestion >> On May 5, 2016 2:48 PM, "Jovan Ilic" <[email protected]> wrote: >> >>> >>> Fiaz, >>> >>> If you are using the data in your original post only, there are no >>> generators in >>> that data set. You should put a (unlimited P and Q) generator where the >>> substation >>> would be in your system. >>> >>> Jovan >>> >>> >>> On Thu, May 5, 2016 at 7:29 AM, Fiaz Ahmad <[email protected]> >>> wrote: >>> >>>> Yes I m using balanced three phase but how can I do it with matpower. I >>>> changed the bus data and gen.data matrices but I couldn't get the power >>>> flows. >>>> On May 5, 2016 2:24 PM, "Jovan Ilic" <[email protected]> wrote: >>>> >>>>> >>>>> You could use Matpower to simulate distribution systems if you are only >>>>> interested in balanced 3 phase without mutual line coupling systems. >>>>> >>>>> Jovan >>>>> >>>>> >>>>> On Thu, May 5, 2016 at 3:41 AM, Ji Chen <[email protected]> wrote: >>>>> >>>>>> Hi Shri, >>>>>> I am interested in power flows for distribution networks >>>>>> recently. Do you mean that Matpower is not a good chioce for >>>>>> distribution networks simulation or it just can not do distribution >>>>>> networks simulation? >>>>>> >>>>>> Thanks, >>>>>> Ji >>>>>> >>>>>> >>>>>> >>>>>> At 2016-05-04 23:02:50, "Abhyankar, Shrirang G." <[email protected]> >>>>>> wrote: >>>>>> >>>>>> http://ewh.ieee.org/soc/pes/dsacom/testfeeders/index.html >>>>>> >>>>>> However, as Jovan mentioned, MATPOWER is for solving balanced >>>>>> three-phase transmission systems. If you are interested in solving >>>>>> unbalanced three-phase power flows for distribution networks then refer >>>>>> to >>>>>> either OpenDSS or GridLAB-D. >>>>>> >>>>>> Shri >>>>>> >>>>>> From: Fiaz Ahmad <[email protected]> >>>>>> Reply-To: MATPOWER discussion forum <[email protected]> >>>>>> Date: Wednesday, May 4, 2016 at 8:49 AM >>>>>> To: MATPOWER discussion forum <[email protected]>, " >>>>>> [email protected]" <[email protected]> >>>>>> Subject: Re: modification on Matpower case.m file for power flow of >>>>>> distribution system >>>>>> >>>>>> Thanks Jovan, >>>>>> >>>>>> In Matpower there are no test cases for distribution systems... Where >>>>>> can i find IEEE distribution system test cases? >>>>>> >>>>>> Regards >>>>>> >>>>>> >>>>>> Have a nice day >>>>>> >>>>>> Regards, >>>>>> FIAZ AHMAD >>>>>> PhD Student, >>>>>> FENS Sabanci University, >>>>>> Istanbul Turkey >>>>>> >>>>>> >>>>>> >>>>>> On Wed, May 4, 2016 at 4:46 PM, Jovan Ilic <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> >>>>>>> Fiaz, >>>>>>> >>>>>>> You are missing lots of data here. I suggest looking at IEEE >>>>>>> distribution system >>>>>>> test cases to see what is involved. Matpower is used for >>>>>>> transmission systems >>>>>>> not distribution systems. >>>>>>> >>>>>>> Jovan >>>>>>> >>>>>>> On Wed, May 4, 2016 at 3:45 AM, Fiaz Ahmad < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Hi. i have the following data files for ieee 33 bus radial >>>>>>>> distribution system. i want to modify the case33.m file in matpower to >>>>>>>> carry out the power flow of the above distribution system. Please >>>>>>>> guide me >>>>>>>> how can i achieve that. >>>>>>>> >>>>>>>> linedata33 >>>>>>>> % Bus fbus tbus R X >>>>>>>> 1 1 2 0.0922 0.0470 >>>>>>>> 2 2 3 0.4930 0.2511 >>>>>>>> 3 3 4 0.3660 0.1864 >>>>>>>> 4 4 5 0.3811 0.1941 >>>>>>>> 4 5 6 0.8190 0.7070 >>>>>>>> 6 6 7 0.1872 0.6188 >>>>>>>> 7 7 8 0.7114 0.2351 >>>>>>>> 8 8 9 1.0300 0.7400 >>>>>>>> 9 9 10 1.0440 0.7400 >>>>>>>> 10 10 11 0.1966 0.0650 >>>>>>>> 11 11 12 0.3744 0.1238 >>>>>>>> 12 12 13 1.4680 1.1550 >>>>>>>> 13 13 14 0.5416 0.7129 >>>>>>>> 14 14 15 0.5910 0.5260 >>>>>>>> 15 15 16 0.7463 0.5450 >>>>>>>> 16 16 17 1.2890 1.7210 >>>>>>>> 17 17 18 0.7320 0.5740 >>>>>>>> 18 2 19 0.1640 0.1565 >>>>>>>> 19 19 20 1.5042 1.3554 >>>>>>>> 20 20 21 0.4095 0.4784 >>>>>>>> 21 21 22 0.7089 0.9373 >>>>>>>> 22 3 23 0.4512 0.3083 >>>>>>>> 23 23 24 0.8980 0.7091 >>>>>>>> 24 24 25 0.8960 0.7011 >>>>>>>> 25 6 26 0.2030 0.1034 >>>>>>>> 26 26 27 0.2842 0.1447 >>>>>>>> 27 27 28 1.0590 0.9337 >>>>>>>> 28 28 29 0.8042 0.7006 >>>>>>>> 29 29 30 0.5075 0.2585 >>>>>>>> 30 30 31 0.9744 0.9630 >>>>>>>> 31 31 32 0.3105 0.3619 >>>>>>>> 32 32 33 0.3410 0.5302 >>>>>>>> >>>>>>>> loaddata33 >>>>>>>> %Bus P Q >>>>>>>> 1 0 0 0 >>>>>>>> 2 100 60 0 >>>>>>>> 3 90 40 0 >>>>>>>> 4 120 80 0 >>>>>>>> 5 60 30 0 >>>>>>>> 6 60 20 0 >>>>>>>> 7 200 100 0 >>>>>>>> 8 200 100 0 >>>>>>>> 9 60 20 0 >>>>>>>> 10 60 20 0 >>>>>>>> 11 45 30 0 >>>>>>>> 12 60 35 0 >>>>>>>> 13 60 35 0 >>>>>>>> 14 120 80 0 >>>>>>>> 15 60 10 0 >>>>>>>> 16 60 20 0 >>>>>>>> 17 60 20 0 >>>>>>>> 18 90 40 0 >>>>>>>> 19 90 40 0 >>>>>>>> 20 90 40 0 >>>>>>>> 21 90 40 0 >>>>>>>> 22 90 40 0 >>>>>>>> 23 90 50 0 >>>>>>>> 24 420 200 0 >>>>>>>> 25 420 200 0 >>>>>>>> 26 60 25 0 >>>>>>>> 27 60 25 0 >>>>>>>> 28 60 20 0 >>>>>>>> 29 120 70 0 >>>>>>>> 30 200 600 0 >>>>>>>> 31 150 70 0 >>>>>>>> 32 210 100 0 >>>>>>>> 33 60 40 0 >>>>>>>> >>>>>>>> Please help and guide.... Thanks >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>> >
