Partial Hydro constraint

GAMS
1

Hi all,

It is a classic hydro power plant in a wholesale market problem. The objective is maximized income
I have a variable Reservoir_level(i) to control the level within the reservoir limits. I can do this!
822.5 meters < reservoir_level(i) < 824 meters

What I can’t do is limit the reservoir level to a value (823.2 meters) on every hour 8 of (all) my dataset (tabela i ‘hour’)=8

I’ve tried something like: eq12(i)… reservoir_level (i $(tabela(i,’hour’) eq 8)) =L=823.2 ;
It did work

Thanks
Regards

(This table has 30 days X 24 hours entries)

PARAMETER
TABLE tabela(i,j)
hour DA_price
P1 1 29.67
P2 2 25.61
P3 3 24.03
P4 4 23.11
P5 5 23.09
P6 6 25.70
P7 7 31.06
P8 8 29.61
P9 9 31.20
P10 10 35.48
P11 11 35.00
P12 12 35.30
P13 13 35.00
P14 14 35.70
P15 15 34.89
P16 16 30.71
P17 17 43.00
P18 18 54.00

2

You would want this equation to hold based on your condition. The correct place to use if condition is after the equation name. Something like the following should work.

eq12(i)$(tabela(i,’hour’) eq 8)… reservoir_level (i) =L=823.2 ;

  • Atharv
3

It worked !!!

Thanks