A Study on the Development of New Silicone based Polymeric Outdoor Insulator Material for Enhanced Properties
DOI:
https://doi.org/10.33686/pwj.v18i2.1087Keywords:
Ageing, Dielectric Strength, Filler Material, Hardness, Inclined Plane Tracking and Erosion, Recovery of Hydrophobicity, Specific Gravity, Tear Strength, Tensile Strength, Ultimate ElongationAbstract
Polymeric insulators have been increasingly popular in recent years as a result of their superior performance in contaminated environments due to their hydrophobic properties. However, research into the ageing condition of polymeric materials and their practicality for large-scale use is currently ongoing. Insulator deterioration is caused by environmental tracking and erosion factors. As insulators age, they develop immature failures and inconsistencies in their functioning. pollution performance of polymeric insulators is a vital factor in the quality and reliability of the power system. Over some time, dry band arcing can initiate the flashover and it causes degradation in the form of erosion and tracking. Polymeric insulators’ performance is heavily influenced by the constituent materials and their properties. There is a critical need to investigate innovative filler materials that can be combined with existing polymeric base materials to form composites. In this context the proposed research use silicone rubber as a base polymeric material, to which additives are added to produce three distinct composites by varying the filler concentration. Preliminary studies were made to evaluate the hydrophobicity, dielectric strength, hardness, specific gravity, tensile strength, ultimate elongation and tear strength properties of this HTV silicone rubbed-based composites by using ASTM standards and IEC 60587 requirements. Studies were also made by accelerated ageing on sample material by using the IPTE test. The results show substantial improvement in the electrical and ageing properties.
Downloads
Metrics
Downloads
Published
How to Cite
Issue
Section
References
Ravera CN. Specification for composite insulators. Eskom Specification NWS 1612; 1992.
EPRI. Application guide for transmission line non-ceramic insulators. Electric Power Research Institute. Final Report No. TR-111566; 1998.
Zhao T, Bernstorf RA. Ageing tests of polymeric housing materials for non-ceramic insulators. IEEE Electrical Insulation Magazine. 14(2):26-33. https://doi.org/10.1109/57.662784 DOI: https://doi.org/10.1109/57.662784
Simmons S, Shah M, Mackevich J, Chang RJ. Polymer outdoor insulating materials. Part III - Silicone elastomer considerations. IEEE Electrical Insulation Magazine. 1997; 13(5):25-32. https://doi.org/10.1109/57.620515 DOI: https://doi.org/10.1109/57.620515
Mackevich J, Simmons S. Polymer outdoor insulating materials. Part II - Material considerations. IEEE Electrical Insulation Magazine. 1997; 13(4):10-16. https://doi.org/10.1109/57.603554 DOI: https://doi.org/10.1109/57.603554
Mackevich J, Shah M. Polymer outdoor insulating materials. Part I - Comparison of porcelain and polymer electrical insulation. IEEE Electrical Insulation Magazine. 1997; 13(3):5-12. https://doi.org/10.1109/57.591510 DOI: https://doi.org/10.1109/57.591510
History of composite insulators. Hoechst CeramTec Communique, Wunsiedel 05.06.1990. V/H-Dr.Ki/GO; 1990.
Hall JF. History and bibliography of polymeric insulators for outdoor applications. IEEE Transactions on Power Delivery. 1993; 8(1):376-385. https://doi.org/10.1109/61.180359 DOI: https://doi.org/10.1109/61.180359
Ehsani M, Borsi H, Gockenbach E, Bakhshandeh Gr, Morshedian J. Improvement of electrical, mechanical and surface properties of silicone insulators. CEIDP. 2004 Annual Report. Boulder, USA; 2004. p. 623-626.
Hackam R. Outdoor HV composite polymeric insulators. IEEE Transactions on Dielectrics and Electrical Insulation. 1999; 6(5):557-585. https://doi.org/10.1109/ TDEI.1999.9286745 DOI: https://doi.org/10.1109/94.798114
Looms JST. Insulators for high voltage. London, United Kingdom: Peter Peregrinus Ltd; 1990.
