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Paper Information

Journal:   ESTEGHLAL   September 2003 , Volume 22 , Number 1; Page(s) 47 To 57.
 
Paper: 

SIMULATION OF SINGLE CONDUCTORS GALLOPING OSCILLATIONS AND ESTIMATION OF THEIR MAXIMUM AMPLITUDES

 
 
Author(s):  GHOLAMI A., MIRZAI M.
 
* 
 
Abstract: 
Abstract: Overhead transmission lines are influenced by different factors which are ‎mostly electrical and mechanical. These factors can cause problems for lines, ‎distortions in network and outage of line. In designing transmission lines mechanical ‎properties are evaluated after selecting a suitable conductor and clearance with regard ‎to electrical properties. In lines designing, an important mechanical parameter for ‎estimating of phase distance is oscillations. Strong wind or icefall from conductor ‎surfaces or simultaneous presence of ice and wind may cause different oscillations. ‎These oscillations are classified to aeoliane‏,‏ galloping, and swing. Aeoliane is of high frequency (5-100Hz,-) and low amplitude ‎‎(about a few centimeters), galloping is of low frequency (0.1 to 0.3Hz) and high ‎amplitude (about of span sagging), also swing is of horizontal oscillation. In this ‎paper, the mechanism of conductor galloping oscillation and its different types are ‎described also these oscillations are simulated on the typical span by personal ‎computer‏.‏
 
Keyword(s):  GALLOPING, OVERHEAD TRANSMISSION LINES, SINGLE CONDUCTORS, MODELING
 
References: 
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