Вісник № 01(1355) Математичне моделювання в техніці та технологіях

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Modeling npp power unit steam turbine installation steam separatorsuperheater temperature characteristics by interval analysis methods
(Національний технічний університет "Харківський політехнічний інститут", 2020) Potanina, Tetiana Volodymyrivna; Yefimov, Olexander Vyacheslavovych; Khavin, G. L.
The determination of the temperature characteristics of one of the significant elements of the wet-steam turbines of nuclear power units – the steam separator-superheater is considered: namely the construction of the dependence of the temperature of the heated steam at the outlet of the second stage on the changing load of the power unit. Modeling is carried out taking into account the error limitation without reliable information about its distribution. To evaluate the coefficients of empirical dependence, constructed according to the results of experimental data, it is proposed to use numerical methods of interval analysis. The interval approach allows building a refined tube, guaranteed to contain acceptable dependences of the temperature of the heated steam on the electric power of the power unit. In a situation of data uncertainty and limited errors, numerical methods of interval analysis allow creating models of processes and equipment of NPP units with the maximum possible correspondence to a real object.