Senderov O. The computing methods evaluating of statistical characteristics variable and parameters of mathematical models of technological objects gas-transport systems

The thesis is devoted to development of computing methods of evaluation of statistical properties dependent variable and parameters of mathematical models of technological objects of gas-transport systems from independent variable models. The system analysis of a problem of evaluation of statistical properties variable and parameters of mathematical models in the standard IDEF0 is considered. Three theorems for evaluation of statistical properties of nonlinear functions from one random variable are formulated. The numerical method of evaluation of parameters of distribution SB Jhonson is developed depending from a square of the normalized parameter of asymmetry and normalized parameter of kurtosis. Is made evaluation of statistical properties dependent variable and parameters of mathematical models of gas-compressor unit, linear part of a main gas pipeline, device of air cooling, cyclone deduster and measurement of the flowrate of a natural gas on the narrowing device. The algorithms evaluation of an error of calculated parameters of the current mode of working of technological objects depending on errors of the initial data are realized in SCADA-systems of real time.