盖州压气站站控系统与压缩机组控制系统的融合

中国石油管道公司

盖州压气站;压缩机组;控制系统;PLC;融合

Integration of Gaizhou compressor station control system and compressor unit control system
ZHANG Shibin, ZHAO Guohui, ZHANG Shu

PetroChina Pipeline Company

Gaizhou Compressor Station, compressor unit, control system, PLC, integration

备注

传统压气站控制系统架构中各子控制系统种类繁多、架构复杂,存在故障点多、维修量大、数据通讯频繁等问题。以盖州压气站为试点,提出将压气站站控系统与压缩机组控制系统相融合的方法:将压缩机组单独设置的负荷控制系统融合于站控系统中;在SIL 认证后,将压缩机组过程控制系统与安全仪表系统合并,减少控制系统的数量;将压缩机组控制系统的人机界面(HMI)与机组负荷分配控制系统的HMI 全部融合于站控系统的HMI 中,实现站控系统HMI 界面控制压气站中所有受控设备、参数的显示;在系统融合完成后,将站控系统网络分为控制网和设备网,二者相互分离,有效保证了机组控制系统的安全性。试点应用结果表明:在建设时期,节省了前期硬件投资费用;在站场运行过程中,可有效减少因通信失效引起的故障停机次数,同时更有利于实现一键启停站的功能。压气站站控系统与压缩机组控制系统融合后,既可减少控制系统数量、提高系统间通讯速率,同时可确保各系统稳定运行。(图2表1,参[21]

The sub-control systems in the architecture of conventional compressor station control system have various types and complex architecture, leading to excessive failure points, large maintenance amount, frequent data communication, etc. Taking Gaizhou Compressor Station as a pilot, the method integrating the compressor station control system with the compressor unit control system was proposed. The compressor unit load control system was integrated into the station control system. After SIL certification, the compressor unit process control system and safety instrument system were combined, thus reducing the number of control systems. Both the HMI of the compressor unit control system and the HMI of the unit load distribution control system were integrated into the HMI of the station control system, so that the display of all controlled equipment and parameters in the compressor station could be controlled by the HMI interface of station control system. Upon the completion of the system integration, the station control system network was divided into control network and equipment network, separated from each other, and could effectively ensure the safety of the unit control system. The results of the pilot application show that during the construction period, the hardware investment is saved in the earlier stages. During the operation of the station, the number of failures caused by communication failure can be effectively reduced to better realize the one-key start and stop function of the station. The integration of compressor station control system and unit control system will not only reduce the number of control systems, improve the communication rate between systems, but also ensure the stable operation of each system. (2 Figures, 1 Table, 21 References)