|
|
MUHAREMOVIĆ, A., TURKOVIĆ, I., MUHAREMOVIĆ, A., TASAKOVIĆ, S., MUJEZINOVIĆ, A.
CALCULATION METHODS OF CATHODIC PROTECTION SYSTEM PARAMETERS WITH VERTICAL ANODIE ZINC STRINGS
KOMUNALNA ENERGETIKA / POWER ENGINERING, 14
In this paper we analyze protection potential/current distribution for cathodic protection systems (CP systems) with vertical galvanic anode strings. Analytical calculation in case of so called primary current distribution is shown in this paper. In this case, the potential on electrodes, which is the boundary condition, is constant and we only consider the effects of electrical field. Also, the numerical calculation of so called secondary distribution of current and potential is described in the paper. In this case, the boundary conditions on electrodes are nonlinear and alongside the effects of electric field, we must consider the kinetic effects on electrodes. The calculation of current/potential distribution in CP system with galvanic anodes is based on defining the mathematical model of solving Poisson or Laplace equation. Solving of second term partial differential equation in soil and its boundaries requires the precise defining of boundary conditions on anode and cathode surface. Boundary conditions on electrode surfaces represent the functional relationships between current and potential. After the installation of cathodic protection system and multiple year measurement on the given object, the results of numerical calculations of cathodic protection parameters on a concrete object are compared with the measured values. Numerical and measured values correspond to each other.
MUJEZINOVIĆ, A., MARTINEZ, S., MUHAREMOVIĆ, A.
MATHEMATICAL MODEL FOR CATHODIC PROTECTION OF THE UNDERGROUND PIPELINES
KOMUNALNA ENERGETIKA / POWER ENGINERING, 22
Cathodic protection is most often used technique for protection of underground or underwater metallic infrastructure from corrosion. Design of the cathodic protection system implies determination of the potential distribution on the protected object surface which meets given criterions. This paper presents a mathematical model for calculating cathodic protection system parameters. Presented mathematical model was used to conduct the analysis of the impact of soil resistivity and coating resistivity on the level of polarization.
|