Abstract: Wen 23 gas storage is one of the largest gas storages in China, and it is primarily responsible for seasonal peak shaving and emergency gas supply tasks in the North China market. Taking Wen 23 gas storage gas injection pressurization system as the research object, we aim to realize the energy saving and consumption reduction of the pressurization system and improve the process level. The simulation calculation model of the reciprocating compressor performance of the booster system is established, and the corresponding simulation calculation program is developed using Java language. On this basis, simulated calculations of the performance comparison of compressors of various manufacturers under the same working conditions and simulation calculations of the effect of changes in working conditions parameters on the compressor performance are carried out respectively. Through simulation calculations, it is found that the compressor of manufacturer A has the highest volume flow and unit energy consumption under the same working conditions. In addition, in terms of the effect of parameter changes on the performance of the compressor, an increase in the first-stage suction pressure of 1 MPa will cause a reduction in unit energy consumption of 75 ${\rm {kW \cdot h}}$/(${\times 10^4} {{\rm {Nm}}^3}$), an increase in the last-stage discharge pressure of 1 MPa will cause a increase in the unit energy consumption by 17 ${\rm {kW \cdot h}}$/(${\times 10^4} {{\rm {Nm}}^3}$), and the increase of the first and second suction temperature will cause a small increase in unit energy consumption. According to the simulation analysis results, corresponding measures for optimizing the compressor start-up plan and optimizing the compressor operating conditions parameters are proposed. The research fully combines the actual operating characteristics of the pressurization system of Wen 23 gas storage, and the obtained research results have important guiding significance for the on-site operation of the gas storage.

Key words: gas storage, compressor, thermodynamic check calculation, performance simulation, optimization study