| 摘要 |
The invention relates to a method for controlling at least a part of a pump station comprising a number of speed controlled pumps, the method is arranged to minimize the specific energy consumption Espec of said at least a part of a pump station and comprises a sub method, which in turn comprises the steps of: obtaining input data, determining the mutual relative relationships between a first value Al of a quantity corresponding to a first pump speed VI and a second value A2 of said quantity corresponding to a second pump speed V2, and between a first specific energy consumption Espec1 and a second specific energy consumption Espec2, and determining a third value A3 of said quantity corresponding to a third pump speed V3, wherein A3 is set equal to A2-B3 if the conditions A2spec2spec1 are satisfied, A3 is set equal to A2+B4 if the conditions A2>A1 and Espec2spec1 are satisfied, A3 is set equal to A2+B5 if the conditions A2spec2>Espec1are satisfied, and A3 is set equal to A2-B6 if the conditions A2>A1 and Espec2>Espec1 are satisfied, wherein B3, B4, B5, and B6 are parameters of said quantity. |
