Originally posted by: SystemAdmin

Hi!My model deals with time-of-use electricity price P[t].It aims to find the right time to use a given amount of electricity so that the cost is minimized.

The dvars are:
StartTime[n],EndTime[n]

The objective:
minimize sum(t in StartTime[n]..EndTime[n]) (price[t]*Power);

The Problem is:
CPLEX(default) can't extract model: minimize sum(t in StartTime[n]..EndTime[n]) (price[t]*Power);

It seems that for sum(t in x..y) (...) , x and y cannot be dvar.

Can anybody suggest me some alternatives?

Best Regards.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

Hello,

In the expression "sum(t in StartTime[n]..EndTime[n])" what is n? If it is not a constant this will not work. And it actually can not be a constant because it is an index in "StartTime[n],EndTime[n]" definition.

Can be helpful if you post the whole code.

Regards,
Zahar
#DecisionOptimization
#OPLusingCPLEXOptimizer