| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler system capable of suppressing/converging hunting.SOLUTION: A boiler system 1 comprises: a plurality of boilers 20; and a control part 4 which controls combustion states of the boilers 20 upon the basis of necessary amounts of steams that the boilers 20 should generate, the necessary amounts being calculated under PID control so that a steam pressure value of a steam header 6 where steam generated by the boilers 20 gathers is held at a target pressure value. When hunting is occurring or when a possibility that hunting occurs is high, the control part 4 replaces the necessary amount of steam, calculated under the PID control, at the point of time when a steam pressure value in the steam header 6 changes from a fall to a rise with an output steam amount being output by the boilers during actual steam supply.SELECTED DRAWING: Figure 4 |
