31-08-2021, 11:11 PM
Ok, please find below my comments:
• Your Stock is ok, if you want to model the capacity in terms of maximum amount stored, and if the flows are really in TJ;
• Your NCAP_AF(UP/LO) are ok, if if you want to model the capacity in terms of maximum amount stored;
• STG_LOSS is ok;
• STGIN_BND / STGOUT_BND are not ok for the purpose intended.
But are the flows really in TJ (it is a rather small unit)?
Concerning the STGIN_BND / STGOUT_BND, as they are defined now, they are ANNUAL bounds, and so are not actually limiting the charge /discharge rates, but total ANNUAL flows. You could define bounds for each and every timeslice for defining those max charge / discharge rates, but in my opinion that would get rather cumbersome, and so I would suggest to use NCAP_AFC instead. Then your capacity unit could be in MW, and thus Stock=60, NCAP_AFC(NRG,DAYNITE)=1, NCAP_AFC(ACT,DAYNITE)= 0.625, NCAP_AF(ANNUAL,LO)=0.1388889 and PRC_CAPACT=31.536 (assuming TJ is indeed your flow unit). ( 900/(60×24)=0.625; 200/(60×24)=0.13888889 ).
Yes it is correct to identify the process with the "STS" storage type qualifier.
• Your Stock is ok, if you want to model the capacity in terms of maximum amount stored, and if the flows are really in TJ;
• Your NCAP_AF(UP/LO) are ok, if if you want to model the capacity in terms of maximum amount stored;
• STG_LOSS is ok;
• STGIN_BND / STGOUT_BND are not ok for the purpose intended.
But are the flows really in TJ (it is a rather small unit)?
Concerning the STGIN_BND / STGOUT_BND, as they are defined now, they are ANNUAL bounds, and so are not actually limiting the charge /discharge rates, but total ANNUAL flows. You could define bounds for each and every timeslice for defining those max charge / discharge rates, but in my opinion that would get rather cumbersome, and so I would suggest to use NCAP_AFC instead. Then your capacity unit could be in MW, and thus Stock=60, NCAP_AFC(NRG,DAYNITE)=1, NCAP_AFC(ACT,DAYNITE)= 0.625, NCAP_AF(ANNUAL,LO)=0.1388889 and PRC_CAPACT=31.536 (assuming TJ is indeed your flow unit). ( 900/(60×24)=0.625; 200/(60×24)=0.13888889 ).
Yes it is correct to identify the process with the "STS" storage type qualifier.