CODEWITHSUNDEEP
node.jscplexdocplexdocplexcloud
Haripriya M R
Haripriya M R

Reputation: 11

Not showing any solution in cplex

CPLEX is not showing any solution after I have integrated the equations of pevch[i][j] and pevdis[i][j]


int t=24;
int n=10;
int j=0;
range number =1..n;
range tavail=1..t;
float soc[number][tavail]=...;
//forcasted load at 0..4
float pl[tavail]=[10000000,7000000,9000000,6000000,12000000,6000000,4000000,15000000,9000000,12000000,6000000,8000000,10000000,7000000,9000000,6000000,12000000,6000000,4000000,15000000,9000000,12000000,6000000,8000000];
//soc of ev at 0..11
//generation
float pg[tavail]=[10000000,9500000,8500000,11000000,600000,7500000,10000000,9500000,8500000,11000000,600000,7500000,10000000,9500000,8500000,11000000,600000,7500000,10000000,9500000,8500000,11000000,600000,7500000];
//target load at 0..11
float pt[tavail]=[10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000,10000000];
//bus voltage at 0..11
float v[tavail]=[240,232,229,233,230,235,228,234,227,229,231,230,226,232,233,230,236,233,231,232,232,233,233,230];
//bus voltage at 
target bus voltage at 0..11
float vt[tavail]=[230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230,230];
//decision variable charging power ev
dvar float pevch[tavail][number] in 0..100000;
//decision variable discharging power of ev
dvar float pevdis[tavail][number] in 0..100000;
//objective function
minimize sum(i in tavail)((pt[i]-pl[i])+sum(j in number)-pevch[i][j]+sum(j in number)pevdis[i][j]);
subject to

forall(i in tavail,j in number)
if(pt[i]-pl[i]<0 && soc[j][i]>0.7&& v[i]<vt[i])
pevch[i][j]==(0.9-soc[j][i])*100000/(24-i);
else
pevdis[i][j]==0;


forall(i in tavail,j in number)
if(pt[i]-pl[i]>0 && soc[j][i]<=0.7 && v[i]>vt[i])
pevch[i][j]==(0.7-soc[j][i])*100000/(24-i);
else
pevch[i][j]==0;
}

Upvotes: 0

Views: 64

Answers (1)

Alex Fleischer
Alex Fleischer

Reputation: 10062

if you name your constraints cplex will provide relaxations that should help you debug your model.

You can change

forall(i in tavail,j in number) if(pt[i]-pl[i]<0 && soc[j][i]>0.7&& v[i]<vt[i]) pevch[i][j]==(0.9-soc[j][i])*100000/(24-i); else pevdis[i][j]==0;

    forall(i in tavail,j in number) if(pt[i]-pl[i]>0 && soc[j][i]<=0.7 && v[i]>vt[i]) pevch[i][j]==(0.7-soc[j][i])*100000/(24-i); else pevch[i][j]==0; }

into

forall(i in tavail,j in number) ct1:if(pt[i]-pl[i]<0 && soc[j][i]>0.7&& v[i]<vt[i]) pevch[i][j]==(0.9-soc[j][i])*100000/(24-i); else pevdis[i][j]==0;

    forall(i in tavail,j in number) ct2:if(pt[i]-pl[i]>0 && soc[j][i]<=0.7 && v[i]>vt[i]) pevch[i][j]==(0.7-soc[j][i])*100000/(24-i); else pevch[i][j]==0; }

Upvotes: 0

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