Improvement OF Methods OF Calculation AND Management OF Main Gas Pipelines

The relevance of this study is due to the need to improve the efficiency of main gas pipelines (MGP) operation by improving mathematical models and algorithmic solutions, as well as upgrading the software to optimize their development. Within the framework of this work, a detailed analysis of existing mathematical models was carried out and computational algorithms were developed aimed at improving the control of single-string MGPs with a constant diameter, taking into account all possible boundary conditions and features of the gas flow dynamics in real operating conditions. A generalized methodology for the operational regulation of single-string MGP operating modes has been developed, taking into account concentrated gas extraction and injection, as well as with a variable diameter, which allows adapting the control to dynamic changes in gas consumption under various boundary conditions at the inlet and outlet of compressor stations (CS). A new auxiliary function has been introduced that smooths out gas flow rate discontinuities both within elementary sections and during the transition between different diameters or segments of the gas pipeline, which helps to increase the accuracy of modeling and the stability of control in dynamic operating modes of the gas transportation system.

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