Authors : Vladimir Y. Kabashov, Lyudmila P. Andrianova, Ildar I. Gabitov, Rustam S. Aipov, Andrey V. Linenko, Marat F. Tuktarov, Rustam R. Galiullin, Rinat B. Yarullin and Ural R. Yarmukhametov
Abstract: The study shows that the majority of emergency shut-offs of 6-10 kV overhead power lines under the influence of wind and ice are due to dangerous rapprochement, clashing and wire breaks. Clashing and dangerous rapprochement of wires that cause emergency shut-offs of lines often occur in spans with disadjustment sag of the wires from 20-60%. The conducted experimental studies have shown that the distances between the wires with their pendulum oscillations decrease with increasing of disadjustment sag of the wires, wind speed and also with a decrease in the span length. At wind speeds in the range of 17.5-18.6 m/sec, the distance between the wires at the maximum rapprochement in 50 m span is 1.28-1.36 times less than in a of 100 m span. It is shown that the minimum distances between wires are observed at wind directions to the axis of the span within 40-90°. It has been experimentally established that the ice coating on the wires lead to a reduction in the distances between the wires by 26-34%. A new design of the spacer is proposed which prevents dangerous wires rapprochement during swaying under the influence of wind and low-frequency oscillations such as "Galloping".
Vladimir Y. Kabashov, Lyudmila P. Andrianova, Ildar I. Gabitov, Rustam S. Aipov, Andrey V. Linenko, Marat F. Tuktarov, Rustam R. Galiullin, Rinat B. Yarullin and Ural R. Yarmukhametov, 2018. 6-10 kV Overhead Power Lines Efficiency Research under the Influence of Wind and Ice Loads. Journal of Engineering and Applied Sciences, 13: 8346-8352.