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Research Papers

Rational Damping Arrangement Design for Transmission Lines Vibrations: Analytical and Experimental Analysis

[+] Author and Article Information
O. Barry

College of Engineering and Technology,
Central Michigan University,
Mount Pleasant, MI 48859
e-mail: barry1o@cmich.edu

R. Long

College of Engineering and Technology,
Central Michigan University,
Mount Pleasant, MI 48859

D. C. D. Oguamanam

Department of Mechanical and
Industrial Engineering,
Ryerson University,
Toronto, ON M5B 2K3, Canada

1Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received November 18, 2015; final manuscript received December 1, 2016; published online March 22, 2017. Assoc. Editor: Dumitru I. Caruntu.

J. Dyn. Sys., Meas., Control 139(5), 051012 (Mar 22, 2017) (7 pages) Paper No: DS-15-1578; doi: 10.1115/1.4035455 History: Received November 18, 2015; Revised December 01, 2016

The control of overhead transmission lines vibrations is achieved by Stockbridge dampers. However, the effectiveness of the damper is significantly dependent on its location on the conductor. This paper studies the arrangement of Stockbridge dampers on power lines vibrations using both analytical and experimental approaches. An explicit expression of the loop length is presented for the first time. This expression is used to determine the optimal damper location based on a rational approach. The effectiveness of the proposed approach is validated numerically and experimentally. The results show very good agreement and indicate that Stockbridge dampers are more effective for asymmetrical damping arrangement with the bigger counterweight oriented toward the tower.

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References

Figures

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Fig. 1

Schematic of a single conductor with a Stockbridge damper

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Fig. 2

Schematic of the experimental setup

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Fig. 4

Steel-reinforced concrete tower

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Fig. 5

Hydraulic ram and cylinder

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Fig. 6

Electromagnetic shaker

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Fig. 7

Free loop accelerometer

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Fig. 8

Conductor with Stockbridge damper

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Fig. 9

Experiment results for damper effectiveness

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Fig. 10

Damper location optimization for lower frequencies

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Fig. 11

Damper location optimization for medium frequencies

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Fig. 12

Damper location optimization for higher frequencies

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Fig. 13

Analytical results for orientation of the counterweight (one damper per span)

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Fig. 14

Experiment results for orientation of the counterweight (two dampers per span)

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Fig. 15

Analytical results for symmetric versus asymmetric arrangement

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Fig. 16

Experimental results for symmetric versus asymmetric arrangement

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Fig. 17

Proposed heuristic algorithm versus matlab optimization using fmincon routine

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