Abstract: A pump station positioned to receive a first flow of fluid from a pipeline and to discharge a second flow of fluid into the pipeline includes an interface detection instrument positioned at an upstream point and operable to measure a sonic velocity, a temperature, and a flow rate of the fluid at the upstream point. A first pump is operable at a first speed to receive the first flow of fluid and discharge a pressurized flow of fluid, a first discharge pressure controller is positioned within the pressurized flow of fluid and operable to control the pressure of the pressurized flow of fluid, and a control assembly is coupled to the interface detection instrument to receive the measured sonic velocity, temperature, and flow rate.

Abstract: A pump system includes an interface detection meter arranged at a pipeline assembly, a drive assembly for controlling speed of a pump arranged at the pipeline assembly, a discharge pressure control assembly and/or flow control assembly for controlling discharge pressure of the pump system, and a control assembly operably coupled to the drive assembly and/or the discharge pressure control assembly and/or the flow control assembly. A logic control of the control assembly receives fluid data of fluid in the pipeline assembly provided by the interface detection meter, and forwards the fluid data for calculating speed set points for the drive assembly and/or discharge pressure control parameter and/or set points for the discharge pressure control assembly, and/or flow rate control set points for the flow control assembly. A method for controlling variable speed driven pumps or pump systems during batch change and an embodiment of a plug-and-play device are disclosed.