基于PLC技术的LNG工厂电气设备自动化控制系统设计  

Design of Automation Control System for Electrical Equipment in LNG Plant Based on PLC Technology

作　　者：贾飞 JIA Fei(Shaanxi Liquefied Natural Gas Invest&Dev Co.,Ltd.,Xianyang,Shannxi 712100,China)

机构地区：[1]陕西液化天然气投资发展有限公司,陕西咸阳712100

出　　处：《自动化应用》2025年第5期34-36,39,共4页Automation Application

摘　　要：设计一种基于PLC技术的液化天然气(LNG)工厂电气设备自动化控制系统,旨在提高LNG工厂的生产效率和安全性。在实际工厂中进行实证测试,以验证该系统的响应速度、控制精度及能耗表现。实验结果显示,该系统在压缩机启动和稳态运行阶段均表现优异,响应时间缩短至52.3 ms,工艺参数控制精度达到了±0.5%,系统能耗显著降低。This paper designs an automation control system for electrical equipment in Liquefied Nitrogen Gas(LNG)plant based on PLC technology,aiming to improve the production efficiency and safety of LNG plant.The response speed,control accuracy and energy consumption performance of the system are verified by empirical tests in a real factory.The experimental results show that the system performs well in both the start-up and steady-state operation stages of the compressor,with a response time shortened to 52.3 ms,a process parameter control accuracy of±0.5%,and a significant reduction in system energy consumption.

关 键 词：可编程逻辑控制器技术 液化天然气工厂 电气设备 自动化控制 

分 类 号：TU85[建筑科学]