Parameter monitoring and control during petrol transportation using PLCbased PID controller

Abstract

One of the major sources of petroleum products is obtained from the sea (offshore and onshore). Here the major problem faced by the worker is,maintaining the constant pressure and flow till the extreme ends. In this paper, the parameters such as pressure and flow are maintained constantlyby implementing control valves depending on the different pressure and flow rate of the transmitting pipe. PLC (Programmable Logical Controller)is used to automatically regulate the flow and pressure during petroleum product transportation by controlling the percentage of opening of thecontrol valves and pumps respectively. The required set point for pressure and flow rate are obtained by implementing a suitable controller thatregulates in a long transmitting concrete pipes. For this, a PLC based PID controller is developed and its open loop responses are identified. Thesimulation studies are carried out in the MATLAB/SIMULINK platform to ensure the performance of the controller. The controller tuning isdone by ZN (Ziegler and Nicholas) PID and Simple-IMC (Internal Model Control) PID, Shams tuning IMC-PID controller. The simulation resultprovides better control action when Shams IMC-PID controller is used. Shams IMC-PID controller is experimentally verified on the lab scale-setupand the results prove that it provides most consistent performance as compared to ZN and Simple-IMC PID controllers.