Galloping Reduction of Transmission Lines by Using Phononic Crystal
Source abstract
Abstract
Considering the combination of the transmission lines and phononic crystals (PCs), we propose a new method to solve the problem of the galloping of overhead transmission lines. The method has two key points: attaching the suitable mass-spring system on each spacer, and periodically arranging the modified spacers along a transmission line. Based on the Bloch’s theorem, the PC transmission lines could generate vibration band gaps (BGs), which would reduce galloping. In order to implement our point, we establish the two-dimensional model of the PC transmission lines and derive the transfer matrix method to calculate the frequency dispersion relation of the vertical transverse vibration. Then, the extremely low frequency BG, in the range of galloping frequency, is obtained and verified based on an example of single conductor. To widen the BG range, we also study the effects of the spacer and the attached mass-spring system on the BG. The wide BG, which even covers the range of 0.338–0.909 Hz, could be given just by using the suitable setting of the spacer and mass-spring system.
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Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Hearing Loss and Rehabilitation · Aerodynamics and Acoustics in Jet Flows
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Mechanics and Materials, Hohai University, Nanjing 211100, China
Department of Geotechnical Engineering, Nanjing Hydraulic Research Institute, Nanjing 210024, China
College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 211100, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · Fundamental Research Funds for the Central Public Welfare Scientific Research Institutes
References (43)
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