协调控制方式下锅炉前馈模型比较

目前，火电厂普遍采用的机炉协调控制系统是将汽轮机与锅炉作为一个整体进行控制，这就要求机组在运行时既要考虑到对负荷变化的快速响应性，充分利用锅炉蓄热，响应负荷的变化，又要兼顾自身的安全稳定运行．不可过度利用锅炉的蓄热，故要处理好这2方面的矛盾。由于锅炉目前还存在固有的迟延性，将会严重影响电网负荷响应的速度。针对解决锅炉固有缺点的3种前馈方式进行了仿真试验比较，分析了各种方式的优劣性能，为实际生产提供理论依据。

Comparison of boiler fcedforward control methods under coordination control mode

The coordination control system of boiler and turbine is widely used in thermal power plant which controls the turbine and the boiler as a whole. There are two aspects must be considered simultaneously in unit operation, the first is to use the boiler heat storage fully for fast response to load variation, the second is could not use the boiler heat storage excessively for the safety and stability of the boiler operation. The two aspects are conflict each other and must be treated properly. The inherent delay of boiler will badly influence on the response speed of power grid to load variation. There are three feedforward methods for resolution the inherent defect of boiler. The simulation exper- iment and comparison for the three methods were accomplished, and the advantages and disadvantages of each method were analyzed. The result provides a theoretical foundation for practical production.