Simplified Models of Boiler-Turbine Units

摘要

Two simple models to represent the dynamics of fossil-fueled boiler-turbine units are derived in this report. These models are an extension of the work of Morton and Price (1977) and rely heavily on data and model developments presented in Eklund (1971), Aastroem and Eklund (1972, 1975) and Bell and Aastroem (1979). The major contributions of these models is in the prediction of drum water level. The swell/shrink phenomena is quite accurately captured even though the models are only of third order. Step responses and a comparison to plant data are presented to validate the performance of the models. Program listing for the SIMNON system simulation language and the method used to calculate all unknown parameters in the models for a 160 MW unit are given. (ERA citation 14:014643)