在线仿真和离线仿真的建模机理

Modeling theory of online and offline simulation

采用GL公司的SPS动态模拟分析软件建立延安-西安成品油管道系统在线实时监控系统和离线仿真培训系统模型。在线实时仿真需要从SCADA系统中实时获得模型驱动所需要的关键性数据。SPS在线仿真基于"黑箱"理论,主要利用管道两端的压力、流量、温度等数据对管道的水力状态进行模拟仿真,可以用于仪表分析,管道泄漏检测和定位,清管球跟踪,全线任意位置点的压力、温度、流量预测等。在线仿真软件的实时动态模拟,对管道的启/停输操作和管道满流输送具有重要的指导意义,可为全线水力操作提供参考。

The online real-time monitoring system and offline training model for Yan’an-Xi’an Products Pipeline are built by using SPS dynamical simulation software from GL Company. It is required to obtain the key data from SCADA system to drive the model in the online real-time system. The SPS online simulation is based on the ＂black box＂ theory. It makes use of the discharge pressure,suction pressure,flow rate,temperature and other data to do the hydraulic simulation. The simulation results can be used for instrument analysis,leak detection and location,pig tracing,prediction of pressure,temperature and flow rate at any point of the pipeline. The online real-time simulation can provide advice for the starting/shutting down operation,and it is a valuable reference to understand the pipeline hydraulics.