Analysis and Improvement of Firing Control System in 300 MW Unit

Combined with the commissioning of new units in Jiangsu Taicanggang Environmental Protection Power Co. Ltd.,the dynamic characteristics of the controlled target in the process of 300 MW unit firing and current basic theme of unit load control are introduced,mainly boiler following generator method and boiler following generator coordination method . Focusing on shortage of quantity of reserved heat in boilers when the condition of grid load changed rapidly,resulting in the problem concerning regular operation due to great pressure fluctuation,the improvement of feedforward of combustion regulator is introduced. Its improvement effect is proven to be practical,and the units can use AGC method. Meanwhile,the control of air flow,furnace negative pressure and primary air flow are introduced.