Hi Anshu, Even I faced a similar problem with a different system. In "mpc.branch" the 6th, 7th and 8th columns represent RATE A - MVA rating A (long term rating) ,RATE B - MVA rating B (short term rating), RATE C - MVA rating C (emergency rating) respectively. Try giving a high MVA rating to all the 3 columns and check if your solution converges.
Regards, Saranya.A On Mon, Jun 27, 2016 at 1:08 PM, anshu dahiya <[email protected]> wrote: > i have double check my data it is giving the below error: > *runopf(c84)* > > *MATPOWER Version 5.1, 20-Mar-2015 -- AC Optimal Power Flow* > *MATLAB Interior Point Solver -- MIPS, Version 1.2, 20-Mar-2015* > * (using built-in linear solver)* > *Numerically Failed* > > *Did not converge in 6 iterations.* > > *>>>>> Did NOT converge (0.09 seconds) <<<<<* > > > On Mon, Jun 27, 2016 at 11:51 AM, Fiaz Ahmad <[email protected]> > wrote: > >> If there is no syntax error then check your branch matrix. It has high R >> and X values,it will not converge. Probably you are not using the correct >> per unit values. Your zbase=vbase*vbase/mvabase. Use zbase to find p.u >> values for R and X. >> >> I hope it helps >> On Jun 27, 2016 8:53 AM, "anshu dahiya" <[email protected]> wrote: >> >> sir my system is not converging while performing opf and dcopf , what >> should i check in my program. Plz help me >> >> On Sun, Jun 26, 2016 at 5:53 AM, anshu dahiya <[email protected]> >> wrote: >> >>> the problem is still as it was. my 84 bus system is still not converging >>> after applying all steps directed by the Dr. Ray Zimmerman . can anyone >>> help me to make the system converge. i am attaching my file >>> >>> On Fri, Jun 24, 2016 at 6:24 PM, Ray Zimmerman <[email protected]> wrote: >>> >>>> See FAQ #5 <http://www.pserc.cornell.edu/matpower/#pfconvergence>. >>>> >>>> Ray >>>> >>>> >>>> On Jun 24, 2016, at 3:42 AM, anshu dahiya <[email protected]> >>>> wrote: >>>> >>>> my 84 bus system is not converging into 10 iteration. what should i >>>> take steps to make it converge. >>>> >>>> On Thu, Jun 23, 2016 at 8:43 PM, Ray Zimmerman <[email protected]> >>>> wrote: >>>> >>>>> Whenever you have a problem with a case file, the first thing to do is >>>>> always run case_info() >>>>> <http://www.pserc.cornell.edu/matpower/docs/ref/matpower6.0b1/case_info.html> >>>>> to >>>>> check for errors in the connectivity information … >>>>> >>>>> >> case_info('casem84') >>>>> Bad bus numbers: 1 >>>>> bus(1, BUS_I) = 0 >>>>> >>>>> Turns out that bus numbers must be positive integers, as stated in >>>>> caseformat >>>>> <http://www.pserc.cornell.edu/matpower/docs/ref/matpower6.0b1/caseformat.html> >>>>> . >>>>> >>>>> Ray >>>>> >>>>> >>>>> >>>>> On Jun 23, 2016, at 1:59 AM, anshu dahiya <[email protected]> >>>>> wrote: >>>>> >>>>> sir how to solve the following error in matpower which comes in the >>>>> case84 which i have attached >>>>> Error using sparse >>>>> Index into matrix must be positive. >>>>> >>>>> Error in ext2int (line 141) >>>>> n2i = sparse(mpc.bus(:, BUS_I), ones(nb, 1), 1:nb, >>>>> max(mpc.bus(:, BUS_I)), 1); >>>>> >>>>> Error in runpf (line 111) >>>>> mpc = ext2int(mpc); >>>>> >>>>> On Wed, Jun 22, 2016 at 6:59 PM, Ray Zimmerman <[email protected]> >>>>> wrote: >>>>> >>>>>> Assuming this is for a power flow problem, you still have to decide >>>>>> whether the bus is voltage controlled or not. If so, make it a PV bus. If >>>>>> not, and the DG simply injects a fixed amount of power without >>>>>> controlling >>>>>> voltage, then make it a PQ bus. >>>>>> >>>>>> Ray >>>>>> >>>>>> >>>>>> >>>>>> > On Jun 22, 2016, at 1:27 AM, anshu dahiya <[email protected]> >>>>>> wrote: >>>>>> > >>>>>> > how to nominate DG bus which has load as well as generation >>>>>> > the nomenclature in the matpower as below >>>>>> > 1= PQ bus >>>>>> > 2= PV bus >>>>>> > 3= reference bus >>>>>> > 4= isolated bus >>>>>> > i have attached my file plz take a look of it. suggest me solution. >>>>>> > <casem84.m> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> <casem84.m> >>>>> >>>>> >>>>> >>>> >>>> >>> >> >
