水力机组多模型动态矩阵控制分析

Hydraulic Analysis of Multi-model Dynamic Matrix Control

水力机组调节系统是多输入多输出、快时变与慢时变共存,兼具非线性的非最小相位系统。目前采用的常规PID调节已渐渐无法满足大型水力机组的控制品质,为了保证水力机组能更安全、稳定的运行,采用多模型动态矩阵控制理论,作为一种先进的计算机控制技术,其融合了智能控制与自适应控制的优点,通过模型预测、滚动优化、反馈校正等方式改善控制效果,并与PID控制以及单一模型DMC控制进行分析比较,最终证明多模型动态控制在水力机组调节中更具优势,对于解决大型水电站中水力机组调节问题具有实际意义。

The hydraulic regulating system is a multiple input multiple output, fast time-varying and slow time-varying coexist, both nonlinear non-minimum phase system. Currently used in conventional PID control cannot meet the control quality of large hydraulic unit, in order to ensure hydraulic unit can be much safer and stable operation, this paper uses the muhi-model dynamic matrix control theory, as a kind of advanced computer control technology, it combines the advantages of intelligent control and adaptive control, through the model prediction, rolling optimization and feedback correction methods such as improving control effect, and the DMC control and PID control and single model carries on the analysis comparison, proved more model, more advantage in the dynamic con- trol in the hydraulic unit, to solve the problem of large hydropower stations in the hydraulic unit has practical significance.