Verification of the magnetic method in testing of the modified composite core of overhead conductors
Abstract
ACCC/TW conductors deliver excellent electricity transmission results, boosting overall power system efficiency and capacity. Detracting from their many advantages is the propensity of their composite cores to suffer cracking under excessive bending. This article presents a concept for modifying construction and a testing method to determine the technical state of the conductor core after installation in its place of operation. The technique uses an existing method for magnetic testing of steel cables. Tests were conducted on a series of conductor models with cores containing epoxy resin with an addition of a ferromagnetic FeSi 15 powder. The measurements showed the tests were able to detect small crosswise gaps and cracking simulated in the core. The accuracy of the method is determined by the concentration of a magnetic component in the core.References
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B.M. Burks, D.L. Armentrout, M. Baldwin, J. Buckley, M. Kumosa. Hybrid composite rods subjected to excessive bending loads. Composites Science and Technology 69, 2625–2632 Elsevier BV, 2009. LinkEdit
B. Burks, D. Armentrout, M. Kumosa. Failure prediction analysis of an ACCC conductor subjected to thermal and mechanical stresses. IEEE Transactions on Dielectrics and Electrical Insulation 17, 588–596 Institute of Electrical and Electronics Engineers (IEEE), 2010. LinkEdit
B. Burks, J. Middleton, D. Armentrout, M. Kumosa. Effect of excessive bending on residual tensile strength of hybrid composite rods. Composites Science and Technology 70, 1490–1496 Elsevier BV, 2010. LinkEdit
J. Hansel. The Polish methodology of magnetic testing of wire ropes. Journal of Machine Construction and Maintenance nr 3, 91–107 (2012).Edit
J. Hankus. Integrated testing and assessment methods of the safety state of steel ropes. Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa nr 4, 43–58 (2002).Edit
Published
2020-05-16
How to Cite
SZOT, Mariusz; SZADE, Piotr.
Verification of the magnetic method in testing of the modified composite core of overhead conductors.
Journal of Power Technologies, [S.l.], v. 100, n. 2, p. 138-143, may 2020.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1616>. Date accessed: 14 dec. 2024.
Issue
Section
Materials Science
Keywords
composite core conductor, magnetic testing, power transmission
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