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Identification and interpretation of the development of the domestic electrical power system from the point of view unmanned manufactories

Tchórzewski J.

Computer Applications in Electrical Engineering

2012

Vol. 10

283--298

In case of studying regularities in the development of the domestic electrical power system (DEPS) from the point of view of unmanned factories, it is not possible to develop a model using the modelling method. Therefore, identification of development was conducted using the arx method as well as the MATLAB environment and the System Identification Toolbox. For the designed research experiment, assuming one output variable and 14 input variables, MISO models were obtained in the form of matrices th. Th models were expressed in the form of models of development as a function of long time θ, and then, interpretation of its coefficients as basic elements of matrices th was conducted. The results of the analysis of model coefficients influence on the value of the output quantity y(θ) - the total achievable power output for power plants (maximum output) were presented. Studying regularities in the DEPS development was limited to studying the degree of changes in the internal organization of the system and changes in the level of control, and resulted in obtaining a catalogue of moving stationary models in state space (ss). For this purpose, th models were transformed into ss models, and then changes in long time θ of matrices A and B as well as their elements were studied. Ss model was written in the form of the model of state variables development, followed by the interpretation of its coefficients as basic elements of matrices A and B. Other state variables were also interpreted as elements of the DES development vector.