Dear Prof. Zimmerman

I want to do runmarket with following offers and bids also with PF=1 for
generators and the following error is occurred.
Could you please help me?

*define_constants;
mpc0= loadcase('case9');
mpc = load2disp(mpc0);
offers.P.qty = [200; 150; 180];
offers.P.prc = [30; 40; 50];
bids.P.qty = [70; 70; 70];
bids.P.prc = [100; 90; 80];
mkt.OPF = 'AC';
nb = size(mpc.bus, 1);
ng = size(mpc.gen, 1);
pf = 1;
QPratio = sqrt(1/pf^2 -1);
mpc.A = sparse([1:ng 1:ng]', [2*nb+(1:ng) 2*nb+ng+(1:ng)]',
[QPratio*ones(ng,1); -ones(ng,1)], ng, 2*nb+2*ng);
mpc.A = mpc.A(2:end, :);
mpc.l = zeros(ng-1, 1);
mpc.u = mpc.l;
[r, co, cb] = runmarket(mpc, offers, bids, mkt);*

Results

*Warning: Matrix is singular to working precision.
> In mips at 422
  In mipsopf_solver at 145
  In opf_execute at 106
  In opf at 225
  In uopf at 154
  In smartmkt at 90
  In runmarket at 141
Warning: Matrix is singular to working precision.
> In mips at 422
  In mipsopf_solver at 145
  In opf_execute at 106
  In opf at 225
  In uopf at 154
  In smartmkt at 90
  In runmarket at 141

SMARTMARKET: non-convergent UOPF??? Error using ==> mtimes
Inner matrix dimensions must agree.

Error in ==> smartmkt at 170
    price       = mkt.lim.P.max_offer * ones(ng, 1);

Error in ==> runmarket at 141
[co, cb, r, dispatch, success] = smartmkt(mpc, offers, bids, mkt, mpopt);*

Best Wishes

Carlos

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