Artisi - your suggestion of running the pumps with a partially closed valve on the discharge side is the one I have been a proponent of, but this senior engineer (nationally renowned) said that running the 2 vfds as compared to one could get us back on the curve... still confused on his...
We specifically talked about running the same flow on the discharge side, but he implied that it would be better to run two VFD's rather than one, and for some reason that the station would perform better - and I'm still puzzling as to why!
I have been tasked with developing an interim operations protocol for an existing booster pump station that was designed incorrectly. The appropriate mods will be made to the PS after the peak season has passed in several months, but in the mean time, we need to try and operate this station...
