Analysis on Predictive Water Temperature with PID Controller and SCADA System

Abstract

Marine diesel engine start-up goes through the following speed stages: dead slow, slow, half, and full. The jacket water should be heated initially to prevent the cylinder from cracking due to excessive temperature difference. In this paper, PID temperature controller and SCADA system are used to heat the jacket water. Experimental tests have been evaluated to improve closed loop response with PID temperature controller and SCADA system. The heating mode calls the appropriate PID controller according to the design temperature to compare the actual temperature at different stages. The experimental results show that the PID controller converges the temperature well between 35℃and 80℃, the optimal PID parameter are P=3, I=198, D=495 with the auto tune function and the max. power supply current I=8.8A, voltage V=110V.