Adamenko A. Models and Methods of State Identification of Gas Transport System in the Stationary Mode

Generalized task definition of state and parameter identification of GTS in steady mode was defined in the dissertation. It includes the method of forming equation and inequation system from supplied mathematical model of steady state of GTS and from following sets of model's variables and expressions: known, measured and being identified. The method can be used to solve a wide class of tasks of gas distribution. Principles of solving of the defined task were stated. The task of identification of pressures, temperatures, consumptions and gas component percentage was issued from generalized identification task definition and solved. Algorithmic model of steady mode of GTS was developed using object-oriented approach; the model uses a new method of reducing the number of equations in the original equation system of GTS model. This method is based on substitution of some variables as function from another by solving corresponding equations and developing a few algorithms. It is proved by experiment that dispersion of estimations, which are gotten in result of solving identification tasks, are reduced when the level of over-defining of equation system is increased.