Constant-pressure booster

A PI loop holds the network pressure through night and morning demand (Lab II).

Lesson: Pump stations: pressure control and staging

Try it: constant-pressure booster (Lab II live)

Kp0.020

Ki0.010

Pressure set-point25.0 m

Demand: 120 m³/h until 15 s, then the night minimum (96 m³/h), then from 45 s a morning peak (130 m³/h). The dashed red trace is the same pump at fixed speed, without control.

Set-point
With PI control
Fixed speed
Pump speed

Largest deviation after an event: 2.78 m
Remaining error at the end: 0.00 m
Energy used (75 s): 216 Wh
At fixed speed: 221 Wh