The Effect of Conductivity on Surface Leakage Currents on Iced-Covered Insulators

Year 2023, Volume: 12 Issue: 4, 1006 - 1014, 28.12.2023

Muhammed Buğracan Özküçük , Muhsin Tunay Gençoğlu

https://doi.org/10.17798/bitlisfen.1299867

Abstract

Insulators on power transmission systems today are vital to ensuring the reliable and effective operation of high-voltage lines. However, it is inevitable that insulators will encounter problems such as contamination and icing due to natural environmental conditions and environmental factors. Pollution layers and ice buildup that have developed on insulator surfaces have a detrimental impact on insulation performance, increase surface leakage currents, and result in power line failures or interruptions. This article focuses on understanding the phenomena of contamination and icing in insulators, evaluating their effects, and investigating methods that can be taken to prevent or reduce these problems. For this purpose, solutions with different conductivity values were sprayed on the insulators in the laboratory environment, and ice covering the insulator surface was provided. Leakage currents were investigated by applying an alternating voltage with mains frequency to the insulators. Data were obtained with the help of the LabVIEW program, and the relationship of leakage currents of porcelain, glass, and silicone insulators with conductivity was compared.

Keywords

Ice-covered insulator, Surface conductivity, Leakage current, AC voltage, LabVIEW

Supporting Institution

Fırat Üniversitesi

Project Number

MF.21.68

Thanks

This work was supported by the Management Unit of Scientific Research projects of Firat University (FÜBAP) (Project Number: MF.21.68).

References

• ] M. B. Özküçük "İzolatörlerde Buzlanmanın Yüzey Kaçak Akımları Üzerine Etkisi," Yüksek Lisans Tezi, Fırat Üniversitesi, Fen Bilimleri Enstitüsü, Elazığ, 2022.
• [2] M. M. Khalifa and R. M. Morris, "Performance of Line Insulators Under Rime Ice," in IEEE Transactions on Power Apparatus and Systems, vol. PAS-86, no. 6, pp. 692-698, June 1967, doi: 10.1109/TPAS.1967.291880.
• [3] R. Wilkins, “Flashover voltage of high-voltage insulators with uniform surface-pollution films,” Proceedings of the Institution of Electrical Engineers, vol. 116, no. 3, p. 457, 1969, doi: 10.1049/piee.1969.00.
• [4] J. Vlaar, “Thermal and electrical properties of icicles”, University of Waterloo, 2B Honours Physics Report SN 88104434, 1991.
• [5] M. Farzaneh, J. Zhang and X. Chen, "Modeling of the AC arc discharge on ice surfaces," in IEEE Transactions on Power Delivery, vol. 12, no. 1, pp. 325-338, Jan. 1997, doi: 10.1109/61.568256.
• [6] M. Farzaneh, J. Zhang and X. Chen, "A laboratory study of leakage current and surface conductivity of ice samples," Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP'94), Arlington, TX, USA, 1994, pp. 631-638, doi: 10.1109/CEIDP.1994.592040.
• [7] X. Jiang, S. Wang, Z. Zhang, S. Xie and Y. Wang, "Study on AC Flashover Performance and Discharge Process of Polluted and Iced IEC Standard Suspension Insulator String," in IEEE Transactions on Power Delivery, vol. 22, no. 1, pp. 472-480, Jan. 2007, doi: 10.1109/TPWRD.2006.876705.
• [8] Z. Xu et al., "Flashover performance of UHV&EHV post insulators under icing conditions," 2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Des Moines, IA, USA, 2014, pp. 295-298, doi: 10.1109/CEIDP.2014.6995754.
• [9] Z. Zhang, J. You, D. Wei, X. Jiang, D. Zhang, and M. Bi, “Investigations on AC pollution flashover performance of insulator string under different non‐uniform pollution conditions,” IET Generation, Transmission & Distribution, vol. 10, no. 2, pp. 437–443, Feb. 2016, doi: 10.1049/iet-gtd.2015.0691.
• [10] X. Jiang, Z. Xiang, Z. Zhang, J. Hu, Q. Hu, and L. Shu, “Comparison on ac icing flashover performance of porcelain, glass, and composite insulators,” Cold Regions Science and Technology, vol. 100, pp. 1–7, Apr. 2014, doi: 10.1016/j.coldregions.2013.12.010.
• [11] X. Qiao, Z. Zhang, X. Jiang, R. Sundararajan, X. Ma, and X. Li, “AC failure voltage of iced and contaminated composite insulators in different natural environments,” International Journal of Electrical Power & Energy Systems, vol. 120, p. 105993, Sep. 2020, doi: 10.1016/j.ijepes.2020.105993.
• [12] M. Farzaneh, "Insulator flashover under icing conditions," in IEEE Transactions on Dielectrics and Electrical Insulation, vol. 21, no. 5, pp. 1997-2011, Oct. 2014, doi: 10.1109/TDEI.2014.004598.
• [13] F. Yin, Xingliang Jiang and M. Farzaneh, "Electrical performance of composite insulators under icing conditions," in IEEE Transactions on Dielectrics and Electrical Insulation, vol. 21, no. 6, pp. 2584-2593, December 2014, doi: 10.1109/TDEI.2014.004571.
• [14] M. Bi, Z. Yang, T. Jiang, X. Chen and Y. Wang, "Study on Flashover Characteristic and Critical Flashover Current of icing and polluted 110kV Composite Insulators," 2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE), Athens, Greece, 2018, pp. 1-4, doi: 10.1109/ICHVE.2018.8642223.
• [15] M. Farzaneh and W. A. Chisholm, Insulators for Icing and Polluted Environments. Wiley-IEEE Computer Society Press, 2009.
• [16] X. Jiang, L. Chen, Z. Zhang, C. Sun and J. Hu, "Equivalence of Influence of Pollution Simulating Methods on DC Flashover Stress of Ice-Covered Insulators," in IEEE Transactions on Power Delivery, vol. 25, no. 4, pp. 2113-2120, Oct. 2010, doi: 10.1109/TPWRD.2009.2032329.