Increasing Model Size for Tighter Relaxation
2-path variables alone don’t add strength. But they allow 9 new families of inequalities that strengthen the formulation
Whenever both turbine i at time t and i+1 at time t +lag(i) are engaged, the amount of flow sequentially released through two turbines, rrit, cannot exceed the smaller of the two turbine’s upper bounds.
On the other, if either turbine is disengaged, rrit, must be zero.
rrit <= min {Riyit,Ri+1yi+1,t+lag(i), Ri+1yit,Riyi+1,t+lag(i)}