Abstract: The paper presents the research results related to control of the steam boiler parameters: drum level, furnace pressure and steam pressure. It was developed the mathematical model of the water-steam system and furnace part of the boiler. Also, the paper presents the algorithm for real time detection of model parameter variations. In this context a correction method, validate through s...

The control of the boiler-turbine unit is important for its sustainable and robust operation in power plants, which faces great challenges due to unit’s serious nonlinearity, unmeasurable states, variable constraints, unknown time-varying lumped disturbances. To address above issues, this paper proposes a receding Galerkin optimal controller with high-order sliding mode disturbance observer com...

This paper aims to address a finite-horizon model predictive control (MPC) for non-linear drum-type boiler-turbine system using system-identification method. Considering that the strong state coupling of mechanism model, subspace identification method is first utilized obtain linear state-space and transformed into an input–output model. By taking inputs outputs as states, augmented non-minimal...

The combined cycle plants (CCGT) in 2019 are upswing due to definitive closure of conventional coal-fired power plants. increase the price a ton CO2, will close 25 euros 2019, could allow their capacity factor above 50%. Already achieved high flexibility imposed by regulator Spanish network, REE, possible hybridizations both gas turbine (GT) and heat recovery steam generator (HRGS), it is neces...

The present work examines the distribution of spray water in the superheating section for steam temperature control in a once-through circulating fluidized bed (OTU-CFB) boiler. Combustion power generation has become challenging due to increasingly fast load change demands. There is also a constant need to improve power plant efficiency, which leads to extreme operating conditions and complicat...