Abstract
Composite Insulators are widely used because of their advantages, such as high contamination resistance, improved vandalism and high surface hydrophobicity. In recent years composite insulators usage in different contaminated areas has increased prominently. The contaminants affect the behavior of the composite Insulators. This paper presents 25 kV composite insulators condition assessment, removed after field exposure of 8 years from South Central Railway Region, India. Three different pollutant samples along with virgin sample are used for condition assessment. Various laboratory tests were conducted on the polluted samples; tests include ESDD, NSDD and clean fog tests. Simulation was executed for different models through coulomb 3D software, based on their relative permittivity as obtained from the polluted samples. Electric field distribution is found to be similar both in laboratory tests and simulation results. And all results have shown that the polluted insulators were observed to be in good condition after being exposed to 8 years in service.
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Acknowledgement
Authors thank the staff of CPRI for their technical support while conducting tests. We are grateful to South Central Railway for providing contaminated in service samples. We thank CPRI and Osmania University College of Engineering for permitting to publish this paper.
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Sravanthi, B., Aravind, K.A., Nirgude, P., Manjula, M., Kamaraju, V. (2020). Condition Assessment of Composite Insulator Removed from Service. In: Satapathy, S.C., Raju, K.S., Shyamala, K., Krishna, D.R., Favorskaya, M.N. (eds) Advances in Decision Sciences, Image Processing, Security and Computer Vision. ICETE 2019. Learning and Analytics in Intelligent Systems, vol 4. Springer, Cham. https://doi.org/10.1007/978-3-030-24318-0_48
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