Comparative field tests of various practices for the control of wind-induced conductor motion

Dyke, P. Van; Hardy, C.; St-Louis, M.; Gardes, J.-L.

doi:10.1109/61.584433

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…For describing the bending characteristics of the slack conductor, it is considered as a linear elastic Euler-Bernoulli beam coupled with a Bouc-Wen model [12], [15]. The bending deflection v(x, t) of the linear Euler-Bernoulli beam under an external load F (t) = F sin (Ωt) , see Fig.…”

Section: A Analytical Approachmentioning

confidence: 99%

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Modelling the Flexural Hysteresis Behaviour of Bretelle Dampers Based on a Quasi-Static Bending Test

Zamanian,

Langlois,

Loignon

et al. 2023

IEEE Trans. Power Delivery

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Bretelle dampers are made of slack conductor pieces that are used to mitigate aeolian vibration amplitudes. Under cyclic and dynamic excitation, inter-strand friction in slack conductors causes a significant flexural hysteresis leading to the dissipation of high amounts of energies. The objective of this work is to study the flexural hysteresis of three types of slack conductors based on quasistatic bending tests and to reproduce their nonlinear hysteresis behavior using two different approaches; an analytical model using a linear Euler-Bernoulli beam coupled with a Bouc-Wen model, and a finite element model using a superposition of multifiber beam elements with material nonlinearity. The parameters of both models are identified based on the bending test results for different levels of deformation. The developed models in this study can provide a fast tool for manufacturers to identify the dynamical behavior of slack con-ductor and to optimize their damping properties. Furthermore, the bretelle damper model can be integrated into a conductor model in order to study the vibrational behavior of transmission lines equipped with bretelle dampers.

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Section: A Analytical Approachmentioning

confidence: 99%

“…To study specifically bretelle dampers, field tests have been carried out by Van Dyke et al [12] and Leblond et al [13].…”

Section: Introductionmentioning

confidence: 99%

Modelling the Flexural Hysteresis Behaviour of Bretelle Dampers Based on a Quasi-Static Bending Test

Zamanian,

Langlois,

Loignon

et al. 2023

IEEE Trans. Power Delivery

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“…En effet, même pour de petites vitesses de vent (inférieures à 7 m.s À1 ), de nombreuses études ont prouvé l'existence de vibrations de faible amplitude avec des fréquences relativement élevées (jusqu'à 50 Hz). Parmi ces recherches expérimentales, des études ont été effectuées par l'intermédiaire de mesures in situ [2] et d'essais en laboratoire [3]. Ces analyses expérimentales, ainsi que les retours d'expérience des opérateurs sur le terrain, ont conduit RTE à considérer comme prioritaire l'étude de ce phénomène vibratoire, nommé "vibrations éoliennes" (aeolian vibration en anglais) par opposition au phénomène de galop.…”

Section: Approche Retenue Pour Le Volet Mécanique Du Projetunclassified

Modélisation numérique du phénomène defretting-fatigue intervenant dans le vieillissement des conducteurs de lignes aériennes

Redford

Lieurade²,

Gueguin

et al. 2018

Matériaux & Techniques

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Les travaux présentés dans cet article s’inscrivent dans un projet de R&D mis en place par RTE (Réseau de Transport d’Electricité) et visant à évaluer le vieillissement des conducteurs électriques de lignes aériennes par des outils de simulation numérique. Après avoir rappelé la géométrie de tels conducteurs et l’utilisation qui en est faite, le principal risque d’endommagement de ces derniers est présenté. Il s’agit du phénomène de fretting-fatigue intervenant à proximité des systèmes de fixation des conducteurs au niveau des pylônes, pouvant produire la rupture de brins les constituant. Ainsi, une méthodologie originale est proposée de façon à évaluer, par l’intermédiaire d’un modèle éléments finis, la durée de vie des conducteurs vis-à-vis de ce risque. Cette méthodologie est ensuite appliquée sur un cas-test dont les données proviennent de la littérature. Enfin, des perspectives sont données concernant le modèle numérique employé et l’intégration de la démarche dans le projet de R&D concerné.

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“…It dissipates the energy of conductors by self-vibration, thus its energy dissipation characteristics are related to its self-damping characteristics. Dyke and Hardy (1997) tested the lines fixed the stockbrige damper, wire damper or spacer damper and made collusions that the wire damper has the similar anti-vibration effect with the stockbridge dampers. Kamiyama (1999) introduced that the crosswire dampers were used in the anti-vibration design for an over-water crossing of the osakithermal power line.…”

mentioning

confidence: 99%

Experimental Study on Mitigation Devices of Aeolian Vibration of Bundled Conductors

Cao

Jiang

et al. 2013

Advances in Structural Engineering

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Aeolian vibration of transmission conductors could cause triggering off shares and broken due to fatigue damage and thus of concern. To ensure the safety of electrical transmission systems, mitigation devices are usually installed on the conductors to suppress the aeolian vibration. This paper investigates effects of three types of such devices on bundled conductors experimentally, including spacer dampers, damping lines and stockbridge dampers. For this purpose, vibration tests of twin and four bundled conductors were designed and carried out according to IEEE standards. Firstly, the vibration characteristic of the twin bundled conductors equipped with the spacer damper and stockbridge damper were tested with different installation configuration of wire damper sets. The vibration tests of four bundled conductors were also carried out, and the energy dissipation power calculation of spacer damper has been given. The calculation method of energy dissipation power calculation of spacer damper can reflect the properties of the energy dissipation and the method is proven to be reasonable according to the test.

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Comparative field tests of various practices for the control of wind-induced conductor motion

Cited by 5 publications

References 3 publications

Modelling the Flexural Hysteresis Behaviour of Bretelle Dampers Based on a Quasi-Static Bending Test

Modelling the Flexural Hysteresis Behaviour of Bretelle Dampers Based on a Quasi-Static Bending Test

Modélisation numérique du phénomène defretting-fatigue intervenant dans le vieillissement des conducteurs de lignes aériennes

Experimental Study on Mitigation Devices of Aeolian Vibration of Bundled Conductors

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