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e1_npb(i) .. m_pb_rc(i) =l= (1-npb(i) )*M;
e2_npb(i) .. m_pb_ts(i) =l= (1-npb(i) )*M;

With these equations when npb(i) take the value of 1, m_pb_rc (i) and m_pb_ts (i) are 0.
I can not understand the idea of the problem but this may help you.
Best

Hi, the equations can not vary during the resolution. To relate variables or take logical decisions you will need to use binary variables.
Best!

Hi, logical conditions apply to the equations.

e_charge(i+1)$(m_rc_ts(i+1) > 0).. dec(i+1) =e= 1;

Best

Hello, you have many alternatives: sets t /t1*t10/ ; (1) sum(t$(ord(t) ge 2),x(t)) (2) sum(t$(ord(t) ne 9 and ord(t) ne 10),x(t)) =e= 1 sum(t$(ord(t) ge 2 and ord(t) le 7),x(t)) =e= 1 using subsets: sets t /t1*t10/ sum1(t) /t2*t10/ sum2(t) /t1*t8/ sum3(t) /t2*t7/ ; (1) sum(t$sum1(t),x(t)) (2) sum(t$...

Hi, try a Mc Cormick relaxation for bilinear product. This is a linear approximation of a product of two variables. obviously you will find a difference with the exact solution. regards!

hi, try this: lsquaredeq.. lsquared =E= sum((t,year)$(ord(t) eq ceil(ord(year)/5)), power((MATy(year)-MAT.l(t))/MAT.l(t),2) + power((MLy(year)-ML.l(t))/ML.l(t),2) + power((MUy(year)-MU.l(t))/MU.l(t),2) + power((TATMy(year)-TATM.l(t))/TATM.l(t),2) + power((TOCEANy(year)-TOCEAN.l(t))/TOCEAN.l(t),2) );...

Hello, according to your example I think that the final periods correspond to 45 years. A zero-time value is required to complete the 50 years. I can be wrong anyway Bye! This is an example: set t /1*10/ set year Years /1*45/; PARAMETERS E(t) /1 100 2 200 3 300 4 400 5 500 6 600 7 700 8 800 9 900 10...

Hi, I do not completely remember your model. I think this can work. eq1(t,tp).. sum(tpp$(ord(tpp) le ord(t)),x(tpp)) =l= ord(tp) + (1-xpos(tp,t))*1440; eq2(t,tp).. sum(tpp$(ord(tpp) le ord(t)),x(tpp)) =g= ord(tp) - (1-xpos(tp,t))*1440; eq3(tp).. sum(t,xpos(tp,t)) =l= 1; eq4(t,tp).. sum(tpp$(ord(tpp)...

Hi, x(tp) is the sum of the product between a binary variable and its position, so I suppose that is an integer variable (not binary). Anyway, I think it's better to define it as a continuous variable.

Hi, you can try this..

set Yr /1*14/;
scalar YrOrd;
loop(Yr,
YrOrd=ord(Yr);
display YrOrd;
);

or

set Yr /1*14/;
parameter YrOrd(Yr);
loop(Yr,
YrOrd(Yr)=ord(Yr);
);

display YrOrd;