The objective of this paper is to find the generation scheduling so that we can minimize the total operating cost, when it was subjected to some constraints. It also means to be in other words is to find the optimal generating unit commitment in power system for next hours. One and only one unit schedule optimization is made in each iteration. so that the power production cost in conventional environment gets minimized. The initial unit commitment is made if a variable of more than zero is set to one and the other is set to zero then continuous variables are set at all time horizons for only one unit and in this condition a generation schedule is made. if this unit continuous variable is equal to zero, it can be decommited and other variables set to one. Unit decommitment is used to tune the solution. The constraints of power balance, spinning- reserve, minimum-up and down time, generation capacity and the ramp rate are all considered. This shows the effectiveness of the proposed approach.
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