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See detailOriginal real-time observations of aeolian vibrations on power-line conductors
Godard, Bertrand; Guérard, Suzanne ULg; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (2011), 26(4), 2111-2117

Aeolian vibrations of power lines are induced by Von Karman vortex shedding. Vortex shedding is characterized by vibration frequencies in the approximate range of 3-100 Hz (sometimes higher) and by ... [more ▼]

Aeolian vibrations of power lines are induced by Von Karman vortex shedding. Vortex shedding is characterized by vibration frequencies in the approximate range of 3-100 Hz (sometimes higher) and by amplitudes that can reach conductor diameter for the lower range of frequencies, under very slow to medium wind speed (0.5 m/s to about 7 m/s). Conductor vibration causes localized bending, which may cause fatigue failure of the conductor strands. The amplitude of vibration very much depends on conductor self damping, which may be very low. The purpose of this paper to show measurements of these vibrations carried out by a new experimental device (developed by the authors), which is able to perform continuous measurements in the full range of frequencies and amplitudes. A statistical overview of measurements is presented and Lifetime is estimated. [less ▲]

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See detailAeolian vibration on power-line conductors, evaluation of actual self damping
Guérard, Suzanne ULg; Godard, bertrand; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (2011), 26(4), 2118-2122

Aeolian vibrations of power lines are induced by Von Karman vortex shedding. Without dampers, the amplitude of vibration very much depends on conductor self damping, which may be very low. The purpose of ... [more ▼]

Aeolian vibrations of power lines are induced by Von Karman vortex shedding. Without dampers, the amplitude of vibration very much depends on conductor self damping, which may be very low. The purpose of this paper is to show measurements of these vibrations carried out by a new experimental device which is able to perform continuous measurements in the full range of frequencies and amplitudes. In this paper, 550 hours of continuous recording on four different conductors placed in similar conditions is detailed. An evaluation of self damping power, based on observations is proposed. [less ▲]

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See detailFull-scale tests of torsional damper and detuner (TDD) antigalloping device
Lilien, Jean-Louis ULg; Vinogradov, Alexander

in IEEE Transactions on Power Delivery (2002), 17(2), 638-643

A new antigalloping device for overhead lines with bundle conductors was introduced ten years ago, after laboratory tests and observations on actual 400-kV lines. A systematic fullscale test was performed ... [more ▼]

A new antigalloping device for overhead lines with bundle conductors was introduced ten years ago, after laboratory tests and observations on actual 400-kV lines. A systematic fullscale test was performed in Kazakhstan in order to better evaluate torsional damper and detuner (TDD) efficiency. This report details the test station and the results obtained over a several month period of testing and measurement. The tests were carried out thanks to the mutual efforts of the ESSP and the Kazakh Power Research Institute (KazNIIE) at the field tests stand located in Chokpar. [less ▲]

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See detailGalloping data base on single and bundle conductors prediction of maximum amplitudes
Lilien, Jean-Louis ULg; Havard, Dave

in IEEE Transactions on Power Delivery (2000), 15(N°2), 670-674

A data base of 166 cases has been analysed to produced formula to predict galloping amplitudes on power lines either for single conductor of bundle conductor lines.Calculation enhanced the prediction for ... [more ▼]

A data base of 166 cases has been analysed to produced formula to predict galloping amplitudes on power lines either for single conductor of bundle conductor lines.Calculation enhanced the prediction for single conductors but predict larger amplitudes for bundle. [less ▲]

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See detailCalculation of spacer compression for bundle lines under short-circuit.
Lilien, Jean-Louis ULg; papailiou, Konstantin

in IEEE Transactions on Power Delivery (2000), 15(N°2), 839-845

Short-circuit tests results and proposal of a new method to improve Manuzio formula on bundle conductors spacer compression.

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See detailBenchmark cases for galloping with results obtained from wind tunnel facilities. Validation of a finite element model.
keutgen, Renaud; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (2000), 15(N°1), 367-374

Wind tunnel galloping are made available with all data (aerodynamics, amplitudes) to check any model.

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See detailSpacer Compression for a tripple conductor bundle
Lilien, Jean-Louis ULg; Hansenne, Eric; Papailiou, Konstantin et al

in IEEE Transactions on Power Delivery (2000), 15(N°1), 236-241

Spacer compression analysis based on tests and proposed simple method

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See detailTransmission line torsional stiffness. Confrontation of field-tests line and finite element simulations.
keutgen, Renaud; Lilien, Jean-Louis ULg; Yukino, Teruhiro

in IEEE Transactions on Power Delivery (1999), 14(N°2), 567-578

Bundle torsional stiffness, Full scale field tests on a quad bundle compared to a finite element stiffness and simplified model.

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See detailA new theory for torsional stiffness of multi-span bundle overhead transmission lines.
Wang, Jianwei; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (1998), 13(N°4), 1405-1411

A new theory for torsional stiffness of multi-span bundle overhead lines is presented.

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See detailOverhead electrical transmission line galloping.
wang, jianwei; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (1998), 13(N°3), 909-916

A full multi-span 3 degree of freedom iced transmission line model is presented.

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See detailA new damper to solve galloping on bundled lines. Theoretical background, laboratory and field results.
keutgen, Renaud; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (1998), 13(N°1), 260-265

A new kind of anti-galloping device for bundled lines is presented.

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See detailSF6 autoexpansion circuit breaker design: numerical and experimental investigations of arc-gas interactions
Scarpa, Patrick; Dauby, Bernard; Defise, Jean-Marc ULg et al

in IEEE Transactions on Power Delivery (1992), 7(1), 339-345

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