Many catastrophes may occur due to the interference between the metallic pipeline and the high voltage overhead
transmission lines (HVOHTLs). These problems exist due to the neighbouring between the HVOHTLs and the other
infrastructures. Many types of research cover cathodic protection points, detailed description for the production of the AC
voltage, and preliminary mitigation ways. Mainly potassium hydroxide-polarisation cells (KOH-PCs) have been applied to
discharge this voltage to the soil. Based on the KOH-PCs electrical model introduced previously, this study investigates a novel
mitigation technique, where the discharged AC voltage converts to DC voltage that is proper for the cathodic protection for the
metallic pipelines. An integrated system consists of power electronic circuits and distributed intelligent controllers designed to
discharge the AC induced voltage and use in the cathodic protection for the pipelines. Different controllers such as the artificial
neural network, a fuzzy logic controller, and adaptive neuro-fuzzy inference system controllers have been implemented. Two key
performance indicators have been investigated to show the superiority of these controllers, where the total discharged energy
per annum DEyear from the pipeline to the soil, and the total saved per year SEyear . |
