| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water distribution pressure control apparatus which is capable of highly accurately controlling terminal pressure of a water distribution pipe network. <P>SOLUTION: A water distribution pressure control system includes a duct resistance model generation unit 102, a pressure loss computation unit 104, a target discharge pressure computation unit 105 and a rotation speed control unit 107. On the basis of discharge pressure measured by a discharge pressure measuring instrument 2 installed between a water distribution pipe network 1 and pumps 8, 9 and 10, terminal pressure measured by a terminal pressure measuring instrument 3 installed between a water supply pipe of a water distribution destination and the water distribution pipe network 1 and a flow rate measured by a flow rate measuring instrument 4 installed between the water distribution pipe network 1 and the pumps 8, 9 and 10, the duct resistance model generation unit 102 generates a duct resistance model of the water distribution pipe network 1 reflected with influences caused by a modeling error of a predetermined level. On the basis of the duct resistance model and a water distribution flow rate pattern that the water distribution pressure control system has beforehand, the pressure loss computation unit 104 calculates a pressure loss amount of water pressure generated inside the water distribution pipe network 1. Upon receiving a target value of the terminal pressure and on the basis of the pressure loss amount and the target value of the terminal pressure, the target discharge pressure computation unit 105 computes target discharge pressure. The rotation speed control unit 107 controls rotation speeds of the pumps 8, 9 and 10 so as to achieve the target discharge pressure. <P>COPYRIGHT: (C)2013,JPO&INPIT |
