METHOD FOR CONTROLLING TEMPERATURE OF GENERATING BOILER

摘要

PURPOSE: A method for controlling temperature of generating boiler is provided to lengthen useful life of turbine by preventing temperature difference of the steam being supplied to the turbine. CONSTITUTION: A method comprises a first step(100 to 120) of comparing the actual temperature of stream with a preset temperature, and judging whether the actual temperature is higher than a predetermined level; a second step(240) of ending an individual control, if the actual temperature is higher than the predetermined level, and varying the preset value for the reheat steam temperature in accordance with the actual temperature of the steam; a third step(130) of setting the difference between the varied preset temperature and the actual temperature of the reheat steam, as an adjusted temperature value; and a fourth step of reducing the degree of opening of steam damper when the degree of opening of reheat damper increases, and increasing the degree of opening of steam damper when the degree of opening of reheat damper decreases.