CRUDE OIL DISTILLATION COLUMN MULTIVARIABLE MODELS SET FOR ROBUST CONTROL SYSTEMS DESIGN
DOI:
https://doi.org/10.15673/0453-8307.6/2015.48955Keywords:
mathematical model – crude oil – distillation column – robustness – material balanceAbstract
Classical automatic control systems of crude oil distillation columns are used to stabilize indirect parameters (temperature, pressure, level) which are considered as independent. Such systems can be used in case of small disturbances and fluctuation of oil composition. The article describes the set of linear mathematical dynamical models of multi-component crude oil atmospheric distillation column K-2 which is based on direct parameters of material balance. For development of modern multivariable automatic control systems it’s preferable to use direct material balance parameters because change of products flow ratios leads to economical loses. Developed models shows that the plant is significantly multivariable with big lag, so effective automatic control system can be designed only with use of modern control theory. The developed set of models can be used for research of robustness and quality of multivariable automatic control systems (optimal, suboptimal, model-predictive, etc) of crude oil distillations columns which oriented on material balance parametersReferences
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