| 摘要 |
PURPOSE:To reduce the integration capacity of an integration equipment by subtracting the minimum integration operation time of an optional power equipment from the integration operation time of each power equipment every time the integration operation time of the former power equipment reaches a prescribed value. CONSTITUTION:The integration operation times of water feed pumps 111-11n of waterworks are T1-Tn and when the pump 115 is not in operation and a power equipment having a minimum operation time, the integrated value of the pump 115 is a 0, that of the pump 111 is T1-T5=alpha1, and that of the pump 11n is Tn-T5=alphan. Respective integration contents of integrating devices 12 are reset and new integrated values alpha1-alphan are stored as integration operation times. Evey time one of the pumps which are not in operation at this point in time has the minimum operation time, the integration operation time of the pump having the minimum operation time is subtracted from the integration operation time of each pump to reduce the integration capacity of the device 12 remarkably, thereby reducing the cost. |
