INFLUENCE OF WATER TREES ON BREAKDOWN VOLTAGE OF POLYMERIC CABLES INSULATIONS
Cristina Stancu, Petru V. Notingher, Mihai Gabriel Plopeanu
Pages: 100-115
Published: 1 Jan 2011
Views: 78
Abstract: In a previous paper was shown that water trees development modifies considerably the electric field repartition, which increases significantly in the vicinity of treed areas. In order to find the water trees influence on the breakdown voltage, in the present paper, an experimental study on model cables insulated with low density polyethylene is done. In insulation samples, water trees with various dimensions and densities were developed. For the reduction of the test duration, an electric field with a higher frequency (3-5 kHz) was used. For breakdown voltage measurement an automatic setup was realized. For each value of the ageing time the dimensions and densities of water trees and breakdown voltage were measured and the dependency of the breakdown voltage with these quantities were analysed. The results show a significant reduction of the breakdown voltage of treed cables insulations compared to un-treed ones.
Keywords: polyethylene, water treeing, electric field, breakdown, power cables
Cite this article: Cristina Stancu, Petru V. Notingher, Mihai Gabriel Plopeanu. INFLUENCE OF WATER TREES ON BREAKDOWN VOLTAGE OF POLYMERIC CABLES INSULATIONS. Journal of International Scientific Publications: Materials, Methods & Technologies 5, 100-115 (2011). https://www.scientific-publications.net/en/article/1003324/
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