TRANSIENT RESPONSE OF HIGH VOLTAGE TRANSMISSION LINES WITH SELF-SUPPORTING DOUBLE-LOOP STEEL TOWER BASED ON CABLE RUPTURE

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (8) : 88-90,9.

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TRANSIENT RESPONSE OF HIGH VOLTAGE TRANSMISSION LINES WITH SELF-SUPPORTING DOUBLE-LOOP STEEL TOWER BASED ON CABLE RUPTURE

XIA Kaiquan1, QIAN Zhendong2, LIU Yun2

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Abstract

In order to study the dynamic response of high voltage transmission lines with self-supporting double-loop steel tower under mechanical fault, the non-linear dynamic finite element model of a domestic 500kV high voltage transmission line system was established. The reliability of coupling system model was verified by static calculation results. Transient dynamic analysis method was proposed to analyze the variation law of dynamic response under cable rupture. The results show that upper crossarm cable rupture has no effect on cable tension at adjacent suspension points, but it has significant influence on tension in the insulator and tower component of upper crossarm next to the broken span. The research results can provide the theoretical base for the design of transmission line.

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transmission line / self-supporting double-loop tower / transient response / finite element method / rupture failure

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XIA Kaiquan; QIAN Zhendong; LIU Yun. TRANSIENT RESPONSE OF HIGH VOLTAGE TRANSMISSION LINES WITH SELF-SUPPORTING DOUBLE-LOOP STEEL TOWER BASED ON CABLE RUPTURE[J]. Journal of Vibration and Shock, 2009, 28(8): 88-90,9