In this paper,two aspects of improving the flow field characteristics of denitration system and optimizing the control of ammonia injection quantity are studied.On the one hand,the precise measurement of ammonia escape is achieved through the high-precision multi-point on-line synchronous measurement scheme of ammonia escape,which im-proves the flow field characteristics of the denitration system.On the other hand,in order to optimize the control of ammo-nia injection,grey prediction model and fuzzy control idea are introduced into the traditional control system.A grey predic-tion model based on GM(1,1)is established to predict the ammonia-nitrogen ratio.A method of ammonia nitrogen regula-tion based on fuzzy PID is proposed to realize dynamic compensation of denitration control system under disturbance.
关键词
脱硝系统/火电机组/灰色预测模型/模糊控制器
Key words
denitration system/thermal power unit/grey prediction model/fuzzy controller
维普
万方数据