STEAM TEMPERATURE PREDICTION CONTROL DEVICE

摘要

PURPOSE: To reduce a steam temperature deviation, in a steam temperature prediction control device for a boiler plant for a thermal power generation. ;CONSTITUTION: Plant data 2 is received by a plant data input means 10, a main steam temperature prediction value 240 and a reheat steam, temperature prediction value 250 are determined from a boiler similar model by a steam temperature prediction measuring means 20 and delivered to a correction amount calculating means 30. From the prediction value, a fuel flow rate correction amount 31, an SH spray flow rate regulating valve opening correction amount 32, and a gas recirculation damper opening correction amount 33 are determined by the calculating means 30 and a result is fed to a correction amount output means 40, where an output is adjusted to output a result as correction amounts 41, 42, and 43. By adding the correction amounts 41, 42, and 43 to an operation amount of a boiler control device, a temperature deviation between main steam and reheat steam is reduced.;COPYRIGHT: (C)1995,JPO