Examining electrical equivalent circuit models of insulators in transmission lines under pollution conditions: a comprehensive study and analysis


  • Khaled Belhouchet
  • Abderrahim Zemmit
  • Lyamine Ouchen
  • Abdelhafid Bayadi




insulator, finite elements method, electric field, electrical circuit, leakage current


This research presents a comprehensive study investigating the behavior of insulators in transmission lines under various pollution conditions. Utilizing equivalent electrical circuits, the analysis aims to understand the impact of pollution on insulator performance, which is crucial for maintaining the reliability and efficiency of power transmission systems. By providing valuable insights into the relationship between pollution and insulator behavior, this study contributes to the development of improved strategies for mitigating the effects of pollution on transmission lines, ultimately enhancing the overall safety and stability of electrical power networks. The study focuses on a digital model that enables the visualization of potential and electric field distribution within a series of glass insulators utilized in Algerian electrical grids. Initially, a parallel RC network equivalent circuit was devised and its parameters were determined through finite element analysis using Comsol Multiphysics. This equivalent circuit was subsequently integrated into ATP/EMTP software to simulate leakage currents, yielding satisfactory outcomes. The model was then incorporated into the isolator's equivalent circuit. Results from various simulations indicate that the occurrence of discharge along the dry strip impacts leakage current. Furthermore, the re-initiation of discharge on the contaminated insulator's surface is influenced by the pollutant deposit's conductivity and distribution. Therefore, understanding the pollution level is vital for accurately evaluating and sizing the insulator chain at the installation site.


BELHOUCHET, K.; BAYADI, A.; BELHOUCHET, H.; ROMERO, M. Improvement of mechanical and dielectric properties of porcelain insulators using economic raw materials. Boletín de la Sociedad Española de Cerámica y Vidrio, V. 58 (1), pp. 28-37, 2019.https://doi.org/10.1016/j.bsecv.2018.05.004.

BELHOUCHET, K.; BAYADI, A., ALTI, N.; OUCHEN, L. Effects analysis of the pollution layer parameters on a high-voltage porcelain cylindrical insulator using response surface methodology. Diagnostyka, 2021; 22(2), pp. 21-28.https://doi.org/10.29354/diag/134114

BO, L.; GORUR R. S. Modeling flashover of AC outdoor insulators under contaminated conditions with dry band formation and arcing, IEEE Trans. Dielectr. Electr. Insul., vol. 19, no. 3, pp. 1037–1043, 2012. https://doi 10.1109/TDEI.2012.6215110.

BOUDISSA, R.; BAYADI, A.; BAERSCH, R. Effect of pollution distribution class on insulators flashover under AC voltage, Electr. Power Syst. Res., v. 104, pp. 176–182, 2013. https://doi.10.1109/UPEC.2012.6398649

DOUAR, MA.; MEKHALDI, A.; BOUZIDI, MC. Flashover process and frequency analysis of the leakage current on insulator model under non-uniform pollution conditions. IEEETrans.Dielectr.Electr.Insul.;17(4):1284–1297,2010. https://doi.org/10.1109/TDEI.2010.5539701.

FARAMARZI, M.; PALANGAR.; MIRZAIE, M.; MAHMOUDI, A. Improved flashover mathematical model of polluted insulators: A dynamic analysis of the electric arc parameters, Electr. Power Syst. Res., v. 179, no. October 2019, p. 106083, 2020. https://doi 10.1016/j.epsr.2019.106083.

ILHAN, S.; OZDEMIR, A.; JAYARAM, S. H.; CHERNEY E. A. Numerical and experimental investigation of the effects of pollution on glass suspension-type insulators, IEEE Trans. Dielectr. Electr. Insul, vol. 22, no. 5, pp. 2987–2994, 2015. https://doi 10.1109/TDEI.2015.004863.

OTHMAN, N. A.; PIAH, M. A. M.; ADZIS, Z. Space charge distribution and leakage current pulses for contaminated glass insulator strings in power transmission lines, IET Gener. Transm. Distrib., vol. 11, no. 4, pp. 876–882, 2017. https://doi 10.1049/iet-gtd.2016.0793.

OUCHEN, L.; BAYADI, A., BOUDISSA, R., Dynamic model to predict the characteristics of the electric arc around a polluted insulator, IET Sci.Meas.Technol., v. 14, no. 1, pp. 83–90, 2020. https://doi.org/10.1049/iet-smt.2019.0029.

TEGUAR, M. Modélisations d’isolateurs pollués soumis à divers paramètres électrogéométriques, Thèse Dr. d’Etat,, Ec. Natl. Polytech. El-Harrach, Algérie., 2003.

TOPALIS, F. V.; GONOS, I. F.; STATHOPULOS, I. A. Dielectric behaviour of polluted porcelain insulators, IEE Proc.-Gener. Trunsm. Distrib., vol. 148, no. 4, pp. 269–274, 2001. https:// doi: 10.1049/ip-gtd:20010258.

Volat, C., Calcul de la distribution du potentiel du champ électrique le long des surfaces de glace recouvrant les isolateurs haute-tension et dans les intervalles d’air entre celles-ci, these Dr. quebec,canada, 2002.




How to Cite

Belhouchet, K., Zemmit, A., Ouchen, L., & Bayadi , A. (2024). Examining electrical equivalent circuit models of insulators in transmission lines under pollution conditions: a comprehensive study and analysis. STUDIES IN ENGINEERING AND EXACT SCIENCES, 5(1), 1487–1505. https://doi.org/10.54021/seesv5n1-077