Probabilistic Operation of Electric Power Systems Considering Environmental Constraint (Part 15)* -Consideration of Minimum Shut-down Time Constraints-

An outline of already reported scheduling methods which can satisfy environmental constraints and give maximum reliability is briefly described. This scheduling method is expanded to consider the minimum shut-down time of the thermal power units in this paper. To satisfy a constraint of the minimum shut-down time, start-stop schedules are modified to improve themselves so that the thermal units at least shut-down during the minimum shut-down time, or not shut-down at all. Using simulation results of a model power system, an usefulness of the proposed method is shown. Variations of the power supply probability and the computing time are investigated