In generalized method of data reconciliation as equations of conditions beside substance and energy balances can be used equations which don’t have precisely the status of conservation lows. Empirical coefficients in these equations are traded as unknowns’ values. To this kind of equations, in application of the generalized method of data reconciliation in supercritical power unit, can be classified: steam flow capacity of a turbine for a group of stages, adiabatic internal efficiency of group of stages, equations for pressure drop in pipelines and equations for heat transfer in regeneration heat exchangers. Mathematical model of a power unit was developed in the code Thermoflex. Using this model the off-design calculation has been made in several points of loads for the power unit. Using these calculations identification of unknown values and empirical coefficients for generalized method of data reconciliation used in power unit has been made. Additional equations of conditions will be used in the generalized method of data reconciliation which will be used in optimization of measurement placement in redundant measurement system in power unit for new control systems

JO - Archives of Thermodynamics L1 - http://www.journals.pan.pl/Content/94493/PDF/15_paper.pdf L2 - http://www.journals.pan.pl/Content/94493 IS - No 4 December EP - 245 KW - mathematical modeling KW - Empirical characteristics KW - Data reconciliation ER - A1 - Szega, Marcin A1 - Nowak, Grzegorz Tadeusz PB - The Committee on Thermodynamics and Combustion of the Polish Academy of Sciences JF - Archives of Thermodynamics SP - 235 T1 - Identification of unmeasured variables in the set of model constraints of the data reconciliation in a power unit UR - http://www.journals.pan.pl/dlibra/docmetadata?id=94493 DOI - 10.2478/aoter-2013-0040