Nonlinear dynamics and control of bifurcation to regulate the …

2013/4/1 · In the early works, simplification of nonlinear models of boiler–turbine unit, dynamic modelling of a boiler–turbine unit based on parameter estimation, system identification using neural networks, modelling based on data logs, and simple dynamic modelling and stability analysis of a steam boiler drum have been done. . Moreover, computer simulation packages such as SYNSIM for steam

Control Engineering | Understanding feedforward control

2019/4/1 · Sensors and controllers work together to observe coming disturbances and feed the information forward to help calculate future control efforts. Feedforward control example A classic application of feedforward control is a steam distribution system where a central boiler provides steam at a constant pressure to various pieces of equipment throughout the plant.

Improving the performance of a nonlinear boiler–turbine unit via …

2016/2/29 · Boiler–turbine units may show quasiperiodic behavior due to the bifurcation occurrence in the presence of harmonic disturbances. In this study, a multi-input–multi-output nonlinear dynamic model of a boiler–turbine unit is considered. Drum pressure, electric output, and fluid density are the state variables and adjusted at the desired values by manipulation of the input variables

Sustainability | Free Full-Text | Active Disturbance Rejection …

Boiler forced draft systems play a critical role in maintaining power plant safety and efficiency. However, their control is notoriously intractable in terms of modelling difficulty, multiple disturbances and severe noise. To this end, this paper develops a data-driven paradigm by combining some popular data analytics methods in both modelling and control. First, singular value decomposition

(PDF) Disturbances Observation of Solar Tracker Feeding a Boiler

Disturbances Observation of Solar Tracker Feeding a Boiler March 2012 Conference: VIème Congrès International sur les Energies Renouvelables et l'Environnement

Adaptively Receding Galerkin Optimal Control for a Nonlinear …

The boiler-turbine unit is really a complex system in thermal power engineering due to its large-scale nonlinearity, unmeasured state, unknown disturbances, and constraints imposed on both controls and outputs. To design a controller with appropriate performance in above synthetical cases, this paper intends to propose an adaptively receding Galerkin optimal controller design method, in which

[PDF] Observer-based estimation of the water-mass-flow through …

Since the process of heating water in the boiler is nonlinearly dependent on the water-mass-flow, knowledge of the flow-rate could improve the quality of control. This paper presents two different observer-based schemes for the estimation of the water flow rate through a central heating boiler.

(PDF) VGB-Standard Feed Water, Boiler Water and Steam Quality for Power Plants / Industrial Plants …

This VGB-Standard supports the operator of water-steam cycles in power plants and related branches in selecting and judging suitable water regimes with respect to a safe and economically sound operation of the power plant for a long period of time.

Steam Temperature and Boiler Controls | SciTech Connect

2015/4/12 · To get better operational efficiency and also to prevent unnecessary material and thermal stress in thick walled components of boiler and turbine, it is very important to precisely control steam temperature on utility boiler. To get best possible heat rate to reduce fuel costs operators tries to maintain steam temperature at the rated value.