The Investigation of Replacing Ceramic Bushings with Silicon Bushings in the Distribution Transformers


In recent years, the deficiencies of ceramic insulators along with their high maintenance costs have resulted in the replacement of ceramic insulators with silicon type in the pollution area. This idea has been employed for more than two decades in the polluted areas. Humidity of the weather in the south of Iran and the presence of pollutants in the air have made special conditions for construction and maintenance of some equipment including transformer bushings. Usual ceramic bushings, due to their ability in absorbing pollution and the rapid reduction of creepage distance (in a limited time period), have reduced transformer disconnection severely as a result of earth fault. Additionally, they are costly to be washed regularly. Therefore, using intelligent materials in designing bushing can increase the reliability of network and consequently reduction of costs. In this regard, this paper investigates the use of silicon bushings in the distribution systems and proposes operational ideas for the optimal operation of these devices in the polluted areas. The sample bushing was evaluated based on the IEC60137 standard test.

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Amirbandeh, M. , Yaghoti, A. and Sharifi-Tameh, G. (2014) The Investigation of Replacing Ceramic Bushings with Silicon Bushings in the Distribution Transformers. Journal of Surface Engineered Materials and Advanced Technology, 4, 319-325. doi: 10.4236/jsemat.2014.46035.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] DIN 50019-1 (1979) Technical Climatology Haracterization & Cartographic Representation of Open Air Climates.
[2] Gorur, R.S., Cherney, E.A. and Burnham, J.T. (1999) Outdoor Insulators. Ravi S. Gorur Inc., Phoenix.
[3] El-Hag, A.H., et al. (2003) Fundamental and Low Frequency Harmonic Components of Leakage Current as a Diagnostic Tool to Detect Aging of RTV & HTV Silicon Rubber in Salt Fog. IEEE Transactions on Dielectrics and Electrical Insulation, 10, 128-136.
[4] Fernando, M.A.R.M. and Gubanski, S.M. (2010) Ageing of Silicon Rubber Insulator in Coastal and Inland Tropical Environment. IEEE Transactions on Dielectrics and Electrical Insulation, 17, 326-333.
[5] Suwarno, W.W. (2006) Improving the Performances of Outdoor Ceramic Insulators under Severe Conditions by Using Silicone Compound Coatings. WSEAS Transaction on Power System, 1, 1001-1008.
[6] Cherney, E.A. and Gorur, R.S. (2006) RTV Silicone Rubber Coatings for Outdoor Insulator. IEEE Transactions on Dielectrics and Electrical Insulation, 6, 605-611.
[7] Rezaee, M., Moradiyan, A.R. and Shariati, M.R. (2006) Leakage Current Monitoring of Insulators in Electrical Equipment Research Base Tropics Hormozgan. 21th International Power System Conference, Tehran, 13-15 November 2006.
[8] Rezaee, M. and Ghasemi, S. (2011) Silicon Rubber Insulators in Electrical Equipment Performance Evaluation Research Base Tropics Hormozgan. 26th International Power System Conference, Tehran.
[9] Kim, S.-H., Cherney, E.A. and Hackam, R. (1992) Hydrophobic Behaviour of Insulators Coated with RTV Silicone Rubber. IEEE Transactions on Electrical Insulation, 27, 610-622.
[10] Suda, T. (2005) Frequency Characteristics of Leakage Current Waveforms of a String of Suspension Insulators. IEEE Transactions on Power Delivery, 20, 481-487.
[11] Memaripour, A., Abrosh, H. and Sheykholeslam, A.R. (2011) Study of Leakage Current Relationship with Infection in Ceramic Insulators. 11th Electric Power Distribution Conference, Iran.
[12] Dostibarhagh, H., Honrmand, M.E. and Talebi, J. (2011) The Study and Science Experiments for Porcelain Insulator Punching Power Distribution Company in Gilan. 14th Electric Power Distribution Conference, Iran.
[13] Kavousi-Fard, A. and Niknam, T. (2014) Optimal Distribution Feeder Reconfiguration for Reliability Improvement Considering Uncertainty. IEEE Transactions on Power Delivery, 29, 1344-1353.
[14] Kavousi-Fard, A. and Niknam, T. (2014) Multi-Objective Stochastic Distribution Feeder Reconfiguration from the Reliability Point of View. Energy, 64, 342-354.
[15] Kavousi-Fard, A., Niknam, T. and Khosravi, A. (2014) Multi-Objective Probabilistic Distribution Feeder Reconfiguration Considering Wind Power Plants. International Journal of Electrical Power and Energy Systems, 55, 680-691.
[16] Kavousi-Fard, A., Samet, H. and Marzban, F. (2014) A New Hybrid Modified Firefly Algorithm and Support Vector Regression Model for Accurate Short Term Load Forecasting. Expert Systems with Applications, 41, 6047-6056.

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