模型预测控制提高机组AGC品质

摘要

According to the problems of low load fluctuation rate, unsatisfied load regulation accuracy, and instability of control system under coal type change in the 330MW power plant, this paper presents an advanced coordination control system based on model predictive control technique. The practical application shows that this system can improve the performance of AGC, reduce the critical parameter fluctuations, and improve the stability of unit operation and adaptive capacity when the coal type changes.%针对某电厂330MW机组存在负荷升降速率低、负荷调节精度不理想及当煤种变化时控制系统不稳定等实际问题，提出了基于模型预测控制技术的先进协调控制系统。实际应用表明，先进的协调控制系统有效提高了机组AGC功能指标，减小了关键参数的波动，提高了机组运行的稳定性及对煤种变化的自适应能力。