直流炉机组协调控制系统及其实用新技术研究

The Coordinated Control System and its New Practical Techniques of a Once-through Boiler Unit

采用直吹式制粉系统的纯直流炉机组，其燃料－负荷、燃料－压力特性惯性及滞后较大，机组蓄热量较小，水－燃配比要求严格，机、炉协调控制系统必须采取相应的技术措施，才能取得好的控制品质。本文对直流炉机组协调控制系统的基本设计思想、工作原理进行了介绍和分析，并给出了在控制方案中用到的部分实用新技术。

The once-through boiler unit with direct-blown pulverized-coal system has considerable large lag time constants and dead-time. It also has small thermal energy storage, thus requiring strict water-coal ratio. In this paper, the principle and design idea of the coordinated control system and several new practical techniques for this kind of boiler are introduced and analyzed.