摘要
在实际工业生产过程中,时延会对控制系统的性能产生不利影响,甚至导致控制系统不稳定.从切换系统角度研究了重型燃气轮机转速/功率控制回路的时延稳定性问题,以某电厂GE MS109FA 275 MW重型燃气轮机在 100%负荷下的模型为研究对象,通过增广状态变量,选择时延变化作为切换信号,将含有时变时延的转速/功率控制回路转换为一类切换系统.运用范数相关引理,推导出确保含有时变时延的转速/功率控制回路稳定的充分且必要条件,并给出稳定性验证算法,同时基于国产重型燃气轮机NuCON控制系统进行了硬件在环仿真实验,验证了所提理论结果的正确性.该研究结果可为国产重型燃气轮机控制系统设计和参数调整提供理论参考.
Abstract
In industrial production processes,time delays can have adverse effects on the performance of control systems,and may even lead to system instability.This article investigates the stability issues of time-delay in the load/speed control loop of a heavy-duty gas turbine from the perspective of switching systems.The model of GE MS109FA 275 MW heavy-duty gas turbine under 100%load is taken as the research object.The load/speed control loop with time-varying delay is transformed into a class of switching system by augmenting the state variable and selecting the change of time delay as the switching signal.By using the norm correlation lemma,a necessary and sufficient condition to ensure the stability of the load/speed control loop with time-varying delay is derived and the stability verification algorithm is given.The hardware-in-the-loop simulation is carried out based on the domestic heavy-duty gas turbine NuCON control system.The results of this study can provide theoretical references for the design and parameter adjustment of heavy-duty gas turbine control system.
基金项目
国家自然科学基金项目(62103144)
国家航空发动机及燃气轮机重大专项基础研究(2017-V-0010-0061)
国家科技期刊平台
NSTL
万方数据