Optymalizacja lokalizacji pomiarów w redundantnym systemie pomiarowym procesu konwersji energii – Studium przypadku

The measurements system in an energy technology process is treated as a redundant, if it fulfills the conditions for the application of the advanced data validation and reconciliation. At the design stage of such a system, the problem of the number of redundant measurements as well as their location appears from the point of view of the optimization method. In this case, the solved superior optimization problem is the problem of the combinatorial optimization. These tasks are difficult from a computational point of view. For contemporary computers this may become impossible for larger-scale tasks, because the computing time of the corresponding algorithm is an exponential function from the problem dimension to the solution. Example calculations for the redundant measurement system of a selected gas-and-steam CHP unit have been carried-out. As an objective function of the combinatorial optimization task, the relative uncertainty of the energy utilization factor was assumed. To evaluate the redundant measurements system as a whole the relative information entropy – Kullback-Leibler divergence has been accepted. The optimization calculations for all state space elements, i.e. for all possible location configurations of the redundant measurements in the system have been preformed. Discussion of the received results due to the possibility of limiting the dimensionality of the solved optimization combinatorial task and consequently the significant reduction of the numerical calculation time has been carried out.