Trofimchuk V. Improving the efficiency of Ukrainian gas transmission system operation by improving energy management measures

According to the research results it was determined that the technological costs of GTS energy resources were mostly susceptible to energy management. A corporate system of targeted energy monitoring and internal benchmarking was imlementes in LtD "Gas Transmission System Operator", which made it possible to model graphically the efficiency of energy resources usage, identify the causes of energy consumption by taking into account the factors that affected the equipment operation. Regularities were established, which in real time allowed to determine the technical condition of the boiler based on the dependence of its efficiency on gas consumption. The optimal gas temperature at the outlet of the GDS was determined. Simulation of GDS operation with design outlet pressures and optimal gas temperature at the outlet was carried out. On the basis of the research results the influence of deposits in pipelines on an error in an estimation of gas volume in gas pipeline was determined. The influence of nonstationarity on the accuracy of estimating the amount of liquid in the gas pipeline wass shown by mathematical modeling and the error in calculating the gas volume and the value of the nonstationarity criterion for each of the time points of the nonstationary process was determined. The possibility and efficiency of excess oil temperature application in for the GTI oil cooling pipelines subjected for heating the premises of the CS by installing heat exchangers was proved. By using the methods of evaluating the effectiveness of the project on removing the heat from the oil AСI at the CS, its efficiency and advantages of the Monte Carlo mathematical modeling method were justified, which allowed to perform risks simulation and predict the future efficiency of the project depending on variables as accurately as possible.