ADAPTIVE PREDICTIVE CONTROL OF PRESSURE IN A NATURAL GAS DISTRIBUTION SYSTEM

摘要

A gas distribution system to control and manage pressure to users on a pipeline to maintain the low-pressure point at a defined setpoint. A pressure regulator (26) upstream of users regulate the pressure supplied to the users coupled to the pipeline. An adaptive pressure controller (20) with a low-pressure controller (24) m onitors the low-pressure point (PTL) and controls the pressure regulator setpoint (SV) to maintain the low-pressure point pressure value (PTL) to be greater than a predetermined low-pressure value. An adaptive predictive controller (22) is responsive to the time of day and temperature to correspondingly control the pressure regulator (26).