منابع مشابه
Constrained control of a once-through boiler with recirculation ⋆
There is an increasing need to operate power plants at low load for longer periods of time. When a once-through boiler operates at a sufficiently low load, recirculation is introduced, significantly altering the control structure. This paper illustrates the possibilities for using constrained control to obtain optimal load gradients in the recirculation mode. A model predictive controller is de...
متن کاملSpray Flow Design for Once-through Circulating Fluidized Bed Boiler Control
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...
متن کاملTemperature Control of Ultrasupercritical Once-through Boiler–turbine System Using Multi-input Multi-output Dynamic Matrix Control
Multi-input multi-output (MIMO) dynamic matrix control (DMC) technique is applied to control steam temperatures in a large-scale ultrasupercritical once-through boiler–turbine system. Specifically, four output variables (i.e., outlet temperatures of platen superheater, finish superheater, primary reheater, and finish reheater) are controlled using four input variables (i.e., two spray valves, b...
متن کاملController Design for a 1000 MW Ultra Super Critical Once-Through Boiler Power Plant
A large-scale 1000 MW once-through type ultra super-critical boiler power plant, requires investigation for the development of an analyzable model for use in the development of an intelligent control system. Using data from the power plant, a model is realized using dynamically recurrent neural networks. For proper operation, the plant must be broken into smaller subsystems that are each modele...
متن کاملA simulated model for a once-through boiler by parameter adjustment based on genetic algorithms
In this paper based on the physical rules, thermodynamics principles and energy mass balance, the simulation models are developed and applied to electrical power generating plants in order to characterize the essential dynamic behavior of the boiler subsystems and to use the corresponding models for the power plant processes. These models are developed for a sub-critical once through Benson typ...
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ژورنال
عنوان ژورنال: JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN
سال: 1972
ISSN: 0388-3051,1884-4758
DOI: 10.5988/jime1966.7.11_s27