[关键词]
[摘要]
为了在某压气站实现国产首台燃驱压缩机组与引进燃驱压缩机组联合运行,安全、高效、平稳实现多机组负荷分配任务,提出一种以可编程逻辑控制器PLC(Programmable Logic Controller)为核心的负荷分配控制系统。分析了负荷分配控制原理,完成了控制系统构成及实现方式的设计,编制了工作点与喘振区距离的算法逻辑、防喘解耦逻辑和主控制逻辑。实机测试结果表明:该负荷分配控制系统实现了多台机组在各种组合方式下,及其在运行或停机状态下,退出或投入时的联合负荷分配,且系统稳定的最长时间为20 min,满足30 min内达到稳定运行的设计要求。该系统在保证机组安全稳定运行的前提下,使压缩机每段回流量达到最小,并保证每台压缩机有足够的喘振裕量,有效提高了场站压缩机组的运行效率,填补了国产燃驱压缩机组负荷分配控制系统设计生产领域的空白。
[Key word]
[Abstract]
In order to realize the joint operation of the first domestic combustiondriven compressor unit and the imported combustiondriven compressor unit in a certain compressor station, and to realize the task of load distribution of multiple units safely, efficiently and smoothly, a load distribution control system with Programmable Logic Controller (PLC) as the core is proposed in this paper. It analyzed the principle of load distribution control, completed the design of control system composition and implementation mode, and compiled the algorithm logic of the distance between the operating point and the surge zone, the antisurge decoupling logic and the main control logic. The real machine test results show that the load distribution control system realizes the joint load distribution of multiple units under various combination modes and in the running or stopped state, and the maximum time for the system stability is 20 minutes, which meets the design requirement of stable operation within 30 minutes.Under the premise of ensuring the safe and stable operation of the unit, the system minimizes the return flow of each compressor stage and ensures that each compressor has sufficient surge margin, which effectively improves the operating efficiency of the station compressor unit and fills the blank in the field of design and production of load distribution control system for domestic combustiondriven compressor units.
[中图分类号]
TP273
[基金项目]
船舶与海洋工程动力系统国家工程实验室—海洋工程燃气轮机实验室