Advanced

Modeller och regulatorer för en industriell gasturbin

Andersson, Göran (1974) In MSc Theses
Department of Automatic Control
Abstract
The goal of this work is to use basic physical laws to construct a model and a controller for an industrial gas turbine. The model shall simulate all of security and controlling interesting process variables, with resonable accurancy. The controller shall use the process up to the limits to get it as fast as possible at load changes. An unlinear model for a gas turbine STAL GT-120b has been established, under the assumption that efficiencies are constant and that massflow rules can be approximated by the analytic expressions around the equilbrium running line. An unlinear controller for this process has with elementary control theory and knowledge in the dynamic behavior of the process been constructed and tested. Simulations on computer... (More)
The goal of this work is to use basic physical laws to construct a model and a controller for an industrial gas turbine. The model shall simulate all of security and controlling interesting process variables, with resonable accurancy. The controller shall use the process up to the limits to get it as fast as possible at load changes. An unlinear model for a gas turbine STAL GT-120b has been established, under the assumption that efficiencies are constant and that massflow rules can be approximated by the analytic expressions around the equilbrium running line. An unlinear controller for this process has with elementary control theory and knowledge in the dynamic behavior of the process been constructed and tested. Simulations on computer shows that the controller satisfied the requirements. For another gas turbine of the same type STAL GT-120c has a more accurate model been constructed, which doesn't use the approximations of efficiencies and massflows but instead interpolates these variables from characteristics. The model has been compared to measurements on a plant i Halmstad and are fairly accurate both in the dynamic behavior and in steady state. The controller which was constructed for the first gas turbine has been implemented on this model. It shows that the same controller after a few parameter adjustments work as good as before on this process. (Less)
Please use this url to cite or link to this publication:
author
Andersson, Göran
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5147
ISSN
0346-5500
language
Swedish
id
8850446
date added to LUP
2016-03-29 15:50:13
date last changed
2016-03-29 15:50:13
@misc{8850446,
  abstract     = {The goal of this work is to use basic physical laws to construct a model and a controller for an industrial gas turbine. The model shall simulate all of security and controlling interesting process variables, with resonable accurancy. The controller shall use the process up to the limits to get it as fast as possible at load changes. An unlinear model for a gas turbine STAL GT-120b has been established, under the assumption that efficiencies are constant and that massflow rules can be approximated by the analytic expressions around the equilbrium running line. An unlinear controller for this process has with elementary control theory and knowledge in the dynamic behavior of the process been constructed and tested. Simulations on computer shows that the controller satisfied the requirements. For another gas turbine of the same type STAL GT-120c has a more accurate model been constructed, which doesn't use the approximations of efficiencies and massflows but instead interpolates these variables from characteristics. The model has been compared to measurements on a plant i Halmstad and are fairly accurate both in the dynamic behavior and in steady state. The controller which was constructed for the first gas turbine has been implemented on this model. It shows that the same controller after a few parameter adjustments work as good as before on this process.},
  author       = {Andersson, Göran},
  issn         = {0346-5500},
  language     = {swe},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Modeller och regulatorer för en industriell gasturbin},
  year         = {1974},
}