Chemical and Biological Engineering ETDs
Publication Date
12-21-1976
Abstract
Computer simulation of complex physical systems can be a useful technique in analyzing the multitude of interactions occurring in such systems. Real-time modeling of power plants is particularly useful in operator training and engineering research programs. Towards this end, a small-scale simulator has been developed using a dedicated minicomputer. Major components of a drum-type fossil-fired power plant were modeled using first principle, physical equations, and then the component modules were interconnected to form the simulation package. Support routines were written to provide real-time operation, periodic data storage, continuous data display, interrupt capabilities, and manipulation of control variables. The package presently includes component modules for the boiler feed pumps, downcomer/waterwalls, steam drum, superheaters, throttle valves, and high and low pressure turbines. For ease in model validation and verification, only components important in determining the overall plant response were included in the basic model. Since the package was developed on a modular basis with a standard variable nomenclature, expansion of the system is relatively easy. As the need for additional plant components arises, these can be modeled and inserted into the simulation package. The model has been verified through comparison with field test data from an operating power plant. Overall response of the package closely approximated that of the operational plant. Some weaknesses in the open loop model were indicated by the verification, but for most applications, the package provides reasonable predictions of plant responses. Analysis of the validated model's responses to step changes in control variables provided insight into the complex interactions which occur during plant operation. Use of the package to analyze plant interactions and possible control schemes should provide valuable education to students, engineers, and power plant operators. This package is unique in its blend of physical modeling and real-time operation. With its flexibility and adaptability, the simulator system can be a viable tool for research, education, and training.
Document Type
Dissertation
Language
English
Degree Name
Chemical Engineering
Level of Degree
Doctoral
Department Name
Chemical and Biological Engineering
First Committee Member (Chair)
Robert Leroy Long
Second Committee Member
Martin Daniel Bradshaw
Third Committee Member
Harold Knud Knudsen
Fourth Committee Member
Robert Moseley Jefferson
Recommended Citation
Busch, Robert Douglas. "Modeling of a Fossil-Fired Power Plant for Real-Time Simulation." (1976). https://digitalrepository.unm.edu/cbe_etds/115
