| 摘要 |
In a waterworks system wherein a plurality of zones are coupled by pipes, each of the zones including one purification plant and at least one service reservoir for supplying consumers with clear water fed from the purification plant; before initiation of the operation of the system on a particular day, planned values of pipe flows to be interchanged among the zones, planned values of treated water volumes of the purification plants in the respective zones and planned values of water storage volumes of said respective zones at respective times of said particular day are determined in advance, the treated water volumes of said purification plants and the pipe flows are respectively controlled on the basis of said planned values of said pipe flows and said planned values of said treated water volumes at said respective times and also values of the water storage volumes of said respective zones are observed at said respective times of said particular day, deviations between the observed values of said water storage volumes and said planned values thereof are detected in said respective zones, in case where the deviation of one zone among said respective zones falls outside a predetermined range at a certain time, the planned value of the pipe flow between said one zone and another zone after said certain time is modified, said pipe flow between said one zone and said another zone being controlled on the basis of the modified planned value thereof after said certain time, and only in case where said deviation of said one zone is not yet put into said predetermined range by the aforecited modification, the planned value of the treated water volume of the purification plant in said one zone is modified, said treated water volume of said purification plant of said one zone being controlled on the basis of the modified planned value thereof after said certain time.
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