AEOLIAN VIBRATION OF OVERHEAD TRANSMISSION LINES, ANALYSIS OF THE SYSTEM WITHOUT EXTERNAL DAMPER

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H.SADEGHI MORTEZA; MAZAHERI HAMID

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Seminar Paper

Paper Information

Seminar: INTERNATIONAL POWER SYSTEM CONFRENCE
Year:2004 | Issue:19

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Title

AEOLIAN VIBRATION OF OVERHEAD TRANSMISSION LINES, ANALYSIS OF THE SYSTEM WITHOUT EXTERNAL DAMPER

Author(s)

H.SADEGHI MORTEZA | MAZAHERI HAMID

Keywords

OVERHEAD TRANSMISSION LINES

AEOLIAN VIBRATION

SELF DAMPING

STOCKBRIDGE DAMPER

Abstract

IN THIS PAPER A DYNAMICAL MODEL OF TRANSMISSION LINE CONSIDERING THE FLEXURAL RIGIDITY AND TENSION EFFECTS WITHOUT EXTERNAL DAMPING IS STUDIED. SINCE THE SAG-TO-SPAN RATIO IS LESS THAN 1.8, SO THE SYSTEM CAN BE CONSIDERED LINEAR. AT THE FIRST STAGE THE GOVERNING EQUATION OF FREE MOTION IS OBTAINED, IT IS SHOWN THAT IN THE LOWER MODES THE FLEXURAL RIGIDITY EFFECT IS SIGNIFICANT, AND KNOWING THE NUMERICAL VALUE OF THIS PROPERTY IS ESSENTIAL. HOWEVER, BY THE ANALYTICAL METHODS, IS VERY HARD TO OBTAIN THESE VALUES. THEREFORE AN EXPERIMENTAL METHOD OF OBTAINING FLEXURAL RIGIDITY PROPERTY IS INTRODUCED AND THE RESULTS WHIT OTHER INVESTIGATORS ARE COMPARED. AT THE LAST STAGE, THE VIBRATION OF THE CABLE WITH WIND-INDUCED HARMONIC EXCITATION AND CONSIDERING THE STRUCTURAL DAMPING PROPERTIES IS INVESTIGATED. IT IS OBSERVED THAT AT THE HIGHER MODES, THE FLEXURAL EFFECTS CAN BE NEGLECTED, ALSO THE RESULT SHOWN THAT THE HIGHER OF THE CABLE TENSION, THE LESS OF THE FLEXURAL EFFECTS.

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APA: Copy

H.SADEGHI, MORTEZA, & MAZAHERI, HAMID. (2004). AEOLIAN VIBRATION OF OVERHEAD TRANSMISSION LINES, ANALYSIS OF THE SYSTEM WITHOUT EXTERNAL DAMPER. INTERNATIONAL POWER SYSTEM CONFRENCE. SID. https://sid.ir/paper/906664/en

Vancouver: Copy

H.SADEGHI MORTEZA, MAZAHERI HAMID. AEOLIAN VIBRATION OF OVERHEAD TRANSMISSION LINES, ANALYSIS OF THE SYSTEM WITHOUT EXTERNAL DAMPER. 2004. Available from: https://sid.ir/paper/906664/en

IEEE: Copy

MORTEZA H.SADEGHI, and HAMID MAZAHERI, “AEOLIAN VIBRATION OF OVERHEAD TRANSMISSION LINES, ANALYSIS OF THE SYSTEM WITHOUT EXTERNAL DAMPER,” presented at the INTERNATIONAL POWER SYSTEM CONFRENCE. 2004, [Online]. Available: https://sid.ir/paper/906664/en

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