Flowrate-pressure control for nonlinear fluid flow networks with application to multi-modular nuclear plants

摘要

Fluid flow networks (FFNs) are commonly existed in industrial complexes such as the water distribution and mine ventilation systems. Flowrate and pressure control is crucial for the safe, stable and efficient operation of FFNs. Based on giving a nonlinear state-space model for control design, an adaptive distributed flowrate-pressure control strategy taking the simple proportional-integral (PI) form is proposed in this paper, which not only provides globally input-to-state stability (ISS) but also need no values of the network physical or hydraulic parameters. Then, this control law is applied to the module-coordination of a multi-modular nuclear plant based upon the high temperature gas-cooled reactor, and numerical simulation results show the feasibility and satisfactory performance of this newly-built FFN stabilizer.