Elevated number of buildings/household District Heat CHPs has funny effects on MO

Richard-Deuchler commented 11 years ago

This is perfectly expected model behavior. Nonetheless, it may lead to confusion in high (space-heating) CHP scenarios.

When _increasing the number of CHPs in District Heating of Households or Buildings_, the residual demand curve only changes in winter. These CHPs do not run in summer. There may be constant excess electricity in winter. (negative residual demand in winter, positive residual demand in summer) This situation results in a very sensitive plant profitability. Open http://beta.energytransitionmodel.com/scenarios/147124 °° display plant profitability and change the # of pulverized coal plants from 6 to 8. Plant profitability drops from 100 to 0 %....

°° space-heating and hot water demand is all on district heat. District heat is satisfied by 50 % gas CHP. Dispatchable generation capacity is reduced in order to adapt to the new residual demand.

ChaelKruip commented 11 years ago

@Richard-Deuchler do you have suggestions for improvement?

Richard-Deuchler commented 11 years ago

no brilliant idea at the moment. I guess, the main problem is

that the user does not know the shape of the profiles
and may get the information that he produces too much electricity over the whole year

Yet, there is actually a shortage in summer. The user has no way of understanding that just from looking at the model.

maybe we can display a simplified residual demand curve to the user? Or we could provide some characteristica of the residual demand curve? Like Min and Max of electricity demand & Min and Max of non-dispatchable production?

quintel / merit

Elevated number of buildings/household District Heat CHPs has funny effects on MO #78