| 摘要 |
The invention relates to a method for controlling at least a part of a pump station (1) comprising at least a speed controlled pump (2) arranged in a container (3), wherein the method comprises a sub-method (Determine Espec) that is arranged for determining the specific energy consumption Espec of said at least one pump (2), and which involves the steps of operating said pump (2) for at least two different speeds (n1, n2,...) and for each of said at least two speeds (n1, n2,...) in connection to one predetermined measurement level (hmeasure) in the container (3) determining consumed power P(n1, n2,...) and determining outgoing fluid flow Q(n1, n2,...) from the container (3), and deriving the pump's (2) power curve P(n) from the at least two determined values of consumed power P (n1, n2,...), and deriving the pump's (2) pump flow curve Q n) from the at least two determined values of outgoing fluid flow Q(n1, n2,...), and determining the pump's (2) specific energy consumption (Espec) as the quotient of the pump's (2) power curve P(n) divided with the pump's (2) pump flow curve Q(n). |
