To operate the distributing reservoir equipments with minimum fluctuation and with the inflow whose fluctuation is suppressed within its set allowable range by calculating the decided reservoir inflow and then controlling the inflow valve of the reservoir.
The inflow is shown in the sloping of a polygonal line in a QRS(quasi- optimum routing system), and the inflow fluctuation is caused by the change of the sloping of the polygonal line. The inflow which is closest to the optimum one that is decided by minimizing the fluctuation of the inflow at each point of fluctuation is calculated. An allowable fluctuation range is previously set for the inflow. Then the inflow whose fluctuation is suppressed within its set allowable range is calculated. The inflow is not suddenly changed at a single point of fluctuation (polygonal line 1802) but the fluctuation of the inflow is suppressed stepwise (polygonal line 1803). A distributing reservoir is operable with the inflow whose fluctuation is suppressed and accordingly the stable operations are secured for the reservoir and also a filtration plant that supplies the water to the reservoir. Furthermore, the operators of reservoir equipments can have the feeling of security since the reservoir level is never suddenly changed.
TAKEISHI YUZO
TATE JINPEI
HITACHI INF & CONTROL SYST LTD
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