Optimal Control System Based on Advanced Control Technology in Ultra Supercritical Power Units

摘要

Aiming at problems existed in 700 MW ultra supercritical power units in a power plant, such as low load changing rate, low load regulation accuracy and instability of the control system caused by coal type changing, the coordinated control system and advanced optimal steam temperature control system are proposed through adopting the advanced control methods in the modern control theory. The practical application showed that the advanced optimal control systems have successfully improved the performance of load regulation and reduced the fluctuation of key parameters and greatly enhanced the operation stability and self-adaptability to coal variation of the units.