Analytical redundancy for a gas turbine of a combined cycle power plant

This paper studies the structural properties related with the supervision of a gas turbine unit of a combined cycle power plant with sensors faults. The analysis is carried on using the structure defined by constraints and variables contained in a non-linear complex dynamical model. Considering the model described by 37 algebraic and differential equations, the structural analysis based on the matching procedure of the Boolean incidence matrix is used to study the analytical redundancy of the turbine and its redundancy degrees for fault diagnosis. The conclusions obtained with the analysis allows to suggest which sensors and variables have to be considered as the most critical in the turbine from integrity point of view