Modeling of impressed current cathodic protection system using matlab simulink

Abstract

In the modern age of Industrial world, the oil refineries, petroleum products, and petrochemicals form the major part of the industrial set-up all over the world. It is often economical and practical to carry the liquid and gaseous products through pipe-lines rather than by tankers over long distance. Passing through land, rivers, sea, mountains, crossing other services like roads, railways, transmission lines, underground Pipes/Cables etc. The structures of the pipelines are designed to withstand several environmental loading conditions to ensure safe and reliable distribution from point of production to the shore or distribution depot. This pipelines passing through soils which can be considered as corrosive environment; therefore it suffers from underground corrosion. In this research, an impressed current cathodic protection system was modeled using Matlab Simulink for two stations with the same design data but different soil resistivity to calculate the required protection current, the number of anodes and the rectifier voltage. The results show that the station that has lower soil resistivity needs a larger amount of current required for protection than the station that has high soil resistivity.