Feed-water Control Scheme Design of Two Different Structure Double-hearth Benson Once-through Boilers and Its Application

Based on the compare of two steam feed-water systems of unit 1 and unit 2 in YaoMeng Power Plant, two different Benson once-through boiler feed-water control schemes are designed in this paper, and the state feedback control based on the incremental mode state observer is adopted in both feed-water control schemes. Engineering practice shows that adopting the control scheme of unit 1 and the second control scheme of unit 2 given in this paper can make the feed water control effect excellence, meanwhile, the results also proves that the robustness of incremental mode state observer is very well