초록 ▼

An initial start-up schedule is prepared based on given parameters relating to a thermal power plant and its operation. A dynamic characteristic model is prepared, permitting simulation of start-up characteristics which would be obtained if the thermal power plant is started according to the initial

An initial start-up schedule is prepared based on given parameters relating to a thermal power plant and its operation. A dynamic characteristic model is prepared, permitting simulation of start-up characteristics which would be obtained if the thermal power plant is started according to the initial start-up schedule. Estimates are made of specified parameters, such as energy loss, the time interval between steam admission to an intermediate pressure turbine and steam admission to a high pressure turbine, and thermal stress of the power plant. Determination is made of whether the estimated values of the selected parameters are within predetermined allowable ranges or not. The initial start-up schedule is then corrected according to a predetermined rule depending upon whether the estimated values are determined to be within the predetermined allowable ranges or not. The estimating, determining, and correcting are repeated until an optimized start-up schedule is obtained.

대표청구항 ▼

A method for preparing an optimized start-up schedule for a thermal power plant, said method comprising: (a) preparing an initial start-up time schedule for starting a thermal power plant based on given parameters relating to operating of the thermal power plant; (b) estimating energy loss in the st

A method for preparing an optimized start-up schedule for a thermal power plant, said method comprising: (a) preparing an initial start-up time schedule for starting a thermal power plant based on given parameters relating to operating of the thermal power plant; (b) estimating energy loss in the start-up of the thermal plant, a time point when the start-up of the thermal power plant will be finished, and values of selected parameters relating to operation of the thermal power plant which would be obtained if the thermal power plant is operated according to the initial start-up time schedule; (c) determining whether the estimated values of the selected parameters and the deviation of the time point from a scheduled time point for finishing the start-up of the thermal power plant are within predetermined allowable ranges or not; (d) correcting the initial start-up time schedule according to a predetermined rule depending on whether the estimated values and the deviation of the time point are determined to be within the predetermined allowable ranges or not; and (e) repeating steps (b), (c), and (d) based on the corrected start-up time schedule, thereby determining an optimized start-up time schedule which makes the energy less estimated by step (b) a minimum while maintaining the values of the selected parameters and the deviation of the time point estimated by step (b) within the predetermined allowable ranges.