I have been modelling Load Shifting (LS) in a simple way which works so far:
(The storage level is equal to the storage level the time period before plus what is stored from the system minus what is given back into the system)
(The load can only be shifted for one time step, so what comes into the system in t has to go out in t+1)
(the upper bound makes sure that no more than 620MW can be shifted per timestep)
Now I wanted to add another constraint, that no more 2615MW in total can be shifted during the time period I am analyzing. My idea was:
Unfortunately this does not seem to work as load shifting in the results is not used at all anymore. I tried setting the Cap_LS.up(t,c)=1000000 to see if the upper bound was preventing it from being used but it seems to be the Cap_LS_level equation for some reason.
I would be very thankful for any tips or solutions to implement this constraint!!
Problems with syntax of GAMS
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