System and method for pressure control in a network

摘要

A system and a method for controlling the pressure of a fluid in a distribution network. The network includes at least one pump station having a number of pumps that are configured to pressurize the fluid from a supply line; means for determining at least one flow value (Q) of at least a part of the distribution network and a control unit for controlling the activity and/or speed of the pump(s) of the pump station according to a predefined pump curve defining the relationship between the pressure and the flow of the fluid pressurized by the pump station. The control unit is configured to change the pump curve automatically according to at least one determined flow value (Q).

主权项

1. A system for controlling the pressure of a fluid in a distribution network (2), the system comprising:
at least one pump station (4) having a number of pumps (6) that are configured to pressurise the fluid from a supply line (8); means (10) for determining at least one flow value (Q) of at least a part of the distribution network (2) and a control unit for controlling the activity and speed of the pump(s) (6) of the pump station (4) according to a predefined pump curve (20) defining the relationship between the pressure (22) and the flow (24) of the fluid pressurised by the pump station (4), wherein the control unit is configured to change the pump curve (20) automatically according to at least one determined flow value (Q), which is determined by a flow measurement provided by a flow sensor or which is determined by a calculation or estimation, and wherein the at least one flow value (Q) is a determined maximal flow (Qmax) and/or a minimum flow (Qmin) of the fluid pressurised by the pump station (4) within a predefined time period and the control unit is configured to adjust: (a) the maximal flow of the pump curve according to a determined max flow (Qmax) and/or (b) the minimum flow of the flow curve according to a determined minimum flow (Qmin).