Confused about ramp constrains

2016-09-10 Thread Tatiana Carolina Cantillo Garcia
Dear all, I am a little confused about setting ramp constrains in MOST. If I have understood right one must set the 'PositiveLoadFollowReserveQuantity’ and the 'NegativeActiveReserveQuantity' of the xgd matrix to the desired ramp constrains. But I don’t really get how to remove ramp constrains;

Re: Error when running a case.

2016-09-12 Thread Tatiana Carolina Cantillo Garcia
I've already found the source of my error. Thank you! 2016-09-12 20:04 GMT-05:00 Tatiana Carolina Cantillo Garcia < tcanti...@uninorte.edu.co>: > Hello everbody, > > I'm getting an error when I try to run a dc OPF to a new case that I have > uploaded. This is the error

Error when running a case.

2016-09-12 Thread Tatiana Carolina Cantillo Garcia
Hello everbody, I'm getting an error when I try to run a dc OPF to a new case that I have uploaded. This is the error that I am getting: Error using sparse Index exceeds matrix dimensions. Error in makeBdc (line 72) Cft = sparse(i, [f;t], [ones(nl, 1); -ones(nl, 1)], nl, nb);%% connection

Re: Question about warning message

2016-10-25 Thread Tatiana Carolina Cantillo Garcia
rn_tol' option, or turn off the computation of the > prices completely using 'most.skip_prices’. > >Ray > > > > On Oct 21, 2016, at 5:23 PM, Tatiana Carolina Cantillo Garcia < > tcanti...@uninorte.edu.co> wrote: > > Der Dr Zimmerman and Dr Murillo, > &g

Re: cplex error

2016-10-28 Thread Tatiana Carolina Cantillo Garcia
ucok (288 of 720 skipped) > t_most_uc..ok (104 of 260 skipped) > t_most_suc.ok (74 of 185 skipped) > All tests successful (1228 passed, 466 skipped of 1694) > Elapsed time 136.98 seconds. > > > Ray > > > On Oct 28, 2016, at 7:52 AM, Tati

Re: cplex error

2016-10-28 Thread Tatiana Carolina Cantillo Garcia
y-step toward > the case that gives you the error, to see if you can pinpoint the cause. > Maybe just comparing the input files for your case to a working case will > help you spot a problem. > > Sorry I can’t be more helpful, > > Ray > > > On Oct 28, 2016, at

Re: Setting ramp constrains in unit commitment problem in MOST.

2016-10-14 Thread Tatiana Carolina Cantillo Garcia
gt; > > On Oct 13, 2016, at 10:39 AM, Tatiana Carolina Cantillo Garcia < > tcanti...@uninorte.edu.co> wrote: > > Dear all, > > I have a question about setting ramp constrains in the multiperiod problem > in MOST. > I have noticed that the ramp constrains (w

Question about warning message

2016-10-21 Thread Tatiana Carolina Cantillo Garcia
Der Dr Zimmerman and Dr Murillo, I am working with MOST, and I receive a warning message which says the following: "miqps_cplex: max relative mismatch in x from price computation stage = 0.24733" What does it means? Thank you very much in advance, Tatiana Cantillo Enviado con Mailtrack

cplex error

2016-10-28 Thread Tatiana Carolina Cantillo Garcia
Dear all, when I try to run an unit commitment problem in MOST, I keep receiving this error: Error using cplexmiqp (line 337) CPLEX Error 1256: Basis singular. Error in miqps_cplex (line 288) [x, f, eflag, output] = ... Error in miqps_matpower (line 207) [x, f, eflag, output,

Setting ramp constrains in unit commitment problem in MOST.

2016-10-13 Thread Tatiana Carolina Cantillo Garcia
Dear all, I have a question about setting ramp constrains in the multiperiod problem in MOST. I have noticed that the ramp constrains (which are defined in the RAMP_30 , PositiveLoadFollowReserveQuantity and NegativeActiveReserveQuantity columns of the gen and the xgd matrix) are violated in the