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Dynamikstudier på ett ångkraftverk

Hodosi, Georg and Flato, Jerzy (1976) In MSc Theses
Department of Automatic Control
Abstract
The goal of this work is to build a dynamic model for a steam power plant, using frequency and step-response analysis and use it for construction of an automatic controlling system. The model is to simulate all the variables necessary for controlling with reasonable accuracy. <br><br> By using measurements at a power plant in x 14rebro, the transfer functions for the most important steam pressures and process temperatures were determined. With those transfer functions as a ground several alternative dynamical models were analyzed. One of them was chosen as the most useful for the computer simulation. <br><br> The process outputs that were important for controlling purposes were fed back and controlled, and the optimal parameters for the... (More)
The goal of this work is to build a dynamic model for a steam power plant, using frequency and step-response analysis and use it for construction of an automatic controlling system. The model is to simulate all the variables necessary for controlling with reasonable accuracy. <br><br> By using measurements at a power plant in x 14rebro, the transfer functions for the most important steam pressures and process temperatures were determined. With those transfer functions as a ground several alternative dynamical models were analyzed. One of them was chosen as the most useful for the computer simulation. <br><br> The process outputs that were important for controlling purposes were fed back and controlled, and the optimal parameters for the controllers were chosen by repeated simulations. The interactive computer program "Simnon" was used. The computer plottings of the feedback-systems show that the controllers satisfy the requirements. <br><br> A model based on physical laws was built for the turbine with condenser. This model was used to study the temperature- and pressure changes. The resulting pressure changes were fairly accurate, but for the temperature changes the model was too simple, so that the first model is more efficient for feedback and control. (Less)
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author
Hodosi, Georg and Flato, Jerzy
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5181
ISSN
0346-5500
language
Swedish
id
8850282
date added to LUP
2016-03-29 15:39:49
date last changed
2016-03-29 15:39:49
@misc{8850282,
  abstract     = {The goal of this work is to build a dynamic model for a steam power plant, using frequency and step-response analysis and use it for construction of an automatic controlling system. The model is to simulate all the variables necessary for controlling with reasonable accuracy. <br><br> By using measurements at a power plant in x 14rebro, the transfer functions for the most important steam pressures and process temperatures were determined. With those transfer functions as a ground several alternative dynamical models were analyzed. One of them was chosen as the most useful for the computer simulation. <br><br> The process outputs that were important for controlling purposes were fed back and controlled, and the optimal parameters for the controllers were chosen by repeated simulations. The interactive computer program "Simnon" was used. The computer plottings of the feedback-systems show that the controllers satisfy the requirements. <br><br> A model based on physical laws was built for the turbine with condenser. This model was used to study the temperature- and pressure changes. The resulting pressure changes were fairly accurate, but for the temperature changes the model was too simple, so that the first model is more efficient for feedback and control.},
  author       = {Hodosi, Georg and Flato, Jerzy},
  issn         = {0346-5500},
  language     = {swe},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Dynamikstudier på ett ångkraftverk},
  year         = {1976},
}