| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler system 1 capable of improving stability of a pressure when switching a manual operation boiler to an automatic operation.SOLUTION: A boiler system includes a unit number control device 3 for controlling a combustion amount of a boiler 20, which is a control object, so that a steam pressure coincides with a target pressure value P1 based on the steam pressure measured by a steam pressure sensor 7. The unit number control device 3, when switching a manual operation boiler of a boiler group 2 to an automatic operation, in the case where a difference between a header pressure value P2 and the target pressure value P1 exceeds a first threshold value, corrects the target pressure value P1 to the header pressure value P2 at the switching time point and controls a combustion state of the automatic operation boiler, and then, returns to the target pressure value P1 before switching gradually over shift time. |
