مسعود نصيري

Considering the growing need for natural gas transmission systems to reduce energy consumption and increase efficiency, upgrading station equipment has been proposed as a practical and cost-effective solution. The methodology for analyzing how compressor performance affects gas transmission lines' capacity is presented in this research. The improvement of gas compressor performance, its application, and its influence on the gas transmission network's deliverable power have been achieved in this way. Initially, two upgrade designs for each station were simulated under varied operating conditions, with different suction temperatures and pressures. Upgrades to the gas compressor were then compared to the baseline compressor in terms of power consumption and operational efficiency. Test results from multiple booster stations were used to validate the study's findings. The findings indicate that this method is effective in reducing power consumption and consequently increasing the capacity of gas transmission lines. In comparison to the baseline, the gas compressor's power consumption dropped by 4.7% for the first upgrade and 7.5% for the second, based on the simulation data for maximum flow rate. Furthermore, compared to the baseline, the first upgrade's polytropic efficiency increased by 4.7%, and the second upgrade's polytropic efficiency increased by 7.8%. To improve simulation accuracy, a neural network-based algorithm for calculating driver fuel consumption was developed, and Linepack was eva‎luated using two methods. According to the results obtained from the second upgrade plan, the fuel consumption was reduced by 0.11% compared to the fuel consumption at the maximum capacity of the line when using the basic plan. Finally, the line's simulation was limited to the two initial stations in order to investigate the ramp-up scenario in the transient mode using the Aspen Plus Dynamic software.

شبيه‌سازي ظرفيت , هايسيس , ارتقا عملكرد , كمپرسور گاز گريز از مركز , لاين پك , اسپن پلاس دايناميك

Capacity simulation , HYSYS , Upgrade performance , Centrifugal gas compressor , LinePack , Aspen Plus Dynamic

Masoud Nasiri

Prof. Morteza Montazeri