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> >>>> >>>> >>>> >>> >>> >> >
