unit commitment (wind curtailment)

What I understand about wind curtailment is that the wind turbine is being shut down when the wind speed/power exceeds.

I am doing simulation for unit commitment problem by using mixed integer linear programming in MATLAB.

I have set H = 10 for probability distributions of wind power.

Equation (7) is used to transform probability of wind curtailment from probability of wind power (simply saying from figure 1 to figure 2).

h and c are used to checked conditions 1, 2 and 3.

But I don't know about 'c'. So, I have difficulty in coding equation (7).

Can anyone please suggest me? Thank in advance.