A Digital Twin System for Reciprocating Natural Gas Compressor Package Based on HYSYS Mechanism Model
The motor-driving reciprocating natural gas compressor package used on offshore platform has the limitations such as difficult analysis and mapping of the process mechanism,incomplete operation monitoring,and low level of intelligent operation and maintenance.Therefore,a digital twin system based on the HYSYS mecha-nism model was created for the package.Firstly,a digital twin system driving method was designed to provide a theoretical basis for collecting the input parameters and mapping the simulation results of the HYSYS mechanism model,as well as for the data cyclic transmission and functional execution of the system.Then,the two-stage nat-ural gas compression process of the package,which is relatively complex in overall modeling,was simplified.On this basis,a HYSYS mechanism model was constructed.The simulation results of the HYSYS model for the cool-ing water flow rate were compared with the designed performance parameters,verifying the mapping performance of the model.A communication interface between HYSYS and the database was built by using the MySQL database and MATLAB programming environment.Finally,a visualization software operation platform and supporting hard-ware system for the digital twin system were constructed,and the functionality verification and effectiveness/real-time testing were performed on the system.The results indicate that the digital twin system for reciprocating natural gas compressor package based on the HYSYS mechanism model can effectively achieve comprehensive state parame-ter calculation,online monitoring,and process mechanism analysis/mapping for the two-stage natural gas com-pression process in real time.
offshore platformmotor-driving reciprocating natural gas compressor packagedigital twinHYSYS mechanism modelintelligent operation and maintenance
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