Identification and characterization of galloping of Tsuruga test line based on multi-channel modal analysis of field data

Yamaguchi, Hiroki; Yukino, Teruhiro

doi:10.1016/s0167-6105(03)00018-7

Cited by 27 publications

(7 citation statements)

References 15 publications

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“…1), caused by the directly mounted overhead transmission line bundles, which are vibrating due to galloping. The resulting loading direction at the pylon arm thereby depends on a symmetric or asymmetric cable vibration mode [23]. configurations on the overall damping behaviour.…”

Section: Generic Composite Cylinder With Passive Damping Treatmentsmentioning

confidence: 99%

Damping Analysis of Cylindrical Composite Structures with Enhanced Viscoelastic Properties

Kliem¹,

Høgsberg²,

Vanwalleghem

et al. 2018

Appl Compos Mater

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Section: Generic Composite Cylinder With Passive Damping Treatmentsmentioning

confidence: 99%

Damping Analysis of Cylindrical Composite Structures with Enhanced Viscoelastic Properties

Kliem¹,

Høgsberg²,

Vanwalleghem

et al. 2018

Appl Compos Mater

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“…In addition to theoretical analysis, several experimental studies have been conducted on the wind-induced galloping of iced conductors. Several comprehensive test bases have been established for full-scale conductors and different materials have been used to produce cross-sections of iced conductors, which have been employed for quantitative measurements and testing the effectiveness of anti-galloping devices under natural wind conditions [19][20][21][22][23]. Although good results have been achieved, it is challenging to determine and control the wind field conditions in the experiments.…”

Section: Introductionmentioning

confidence: 99%

A simultaneous measurement method for multi-directional galloping of iced bundled conductors and its application in spatial galloping behavior

Cui,

Liu,

Wang

et al. 2024

Meas. Sci. Technol.

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The theoretical results indicate that iced bundled conductors experience spatial gallop-ing due to wind-induced vibration, involving in-plane, out-of-plane, and torsional movements. To better understand the dynamic response of this behavior from an exper-imental perspective, an innovative experimental method has been proposed. The method can simultaneously measure the in-plane, out-of-plane, and torsional vibration signals of iced bundled conductors’ galloping. A testing system was established, and the method is applied in the galloping experiment of continuous iced bundled conductors, validating some theoretical results. This paper describes the construction of a wide-aperture, low-speed wind tunnel suitable for testing the galloping of continuous iced bundled conduc-tors. A “cut-bury-glue” method was proposed to create a model of continuous iced bun-dled conductors effectively, along with a method for connecting subconductors to im-prove experimental precision. The tests utilized laser displacement sensors and wireless posture sensors, considering the installation and data collection characteristics of the sensors. Through signal conversion, error correction, and other technical methods, sim-ultaneous measurement of in-plane, out-of-plane, and torsional vibration signals was achieved. The spatial galloping behavior, changing with wind speed, exhibits limited-amplitude and synchronous characteristics. The participation of different modes shows elliptical orbital motion in single-mode galloping and “8” shaped orbital motion in cou-pled-mode galloping. These results are consistent with previous theoretical research, offering a new approach to studying iced bundled conductors’ galloping.

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“…Therefore, they are difficult to apply to the study of the damage brought by line galloping [14,15]. For full-scale tests, in [16], the field data of transmission line galloping were obtained in the Tsuruga Test line, which verified a method of identifying galloping. In [17], the vibration behaviors of transmission lines with D-section ice coatings were studied by a prototype transmission tower-line system test platform in Henan province, China.…”

Section: Introductionmentioning

confidence: 99%

Design of an Electromagnetism-Based Transmission Line Galloping Test System

et al. 2022

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Existing transmission line full-scale tests rely on natural winds and have low test efficiency. In this paper, taking a reduced-scale test line with a 35.4 m span as an example, an electromagnetism-based transmission line galloping test system is designed. The plunger electromagnet periodically provides mechanical energy which vibrates the wire system in place of complex pneumatic loads. The finite element model of the electromagnet device is established and the influence of related parameters is analyzed. The power supply and control circuit of the excitation device are designed. The vibration of the transmission line is monitored by accelerometers and the displacement calculation method based on discrete wavelet transform (DWT) is proposed. Considering the geometric nonlinearity of the wire system, an adaptive excitation method based on wavelet decomposition and reconstruction of the acceleration signal is proposed. The vibration response of the wire under different coil currents and excitation modes is monitored and analyzed. The results show that the actual line galloping can be simulated by the designed electromagnetic system, the vibration frequency is close to the second natural frequency and the vibration amplitude can be controlled by changing the coil current.

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Identification and characterization of galloping of Tsuruga test line based on multi-channel modal analysis of field data

Cited by 27 publications

References 15 publications

Damping Analysis of Cylindrical Composite Structures with Enhanced Viscoelastic Properties

Damping Analysis of Cylindrical Composite Structures with Enhanced Viscoelastic Properties

A simultaneous measurement method for multi-directional galloping of iced bundled conductors and its application in spatial galloping behavior

Design of an Electromagnetism-Based Transmission Line Galloping Test System

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