Investigation of Conductor Swinging by Wind and its Application for Design of Compact Transmission Line

Tsujimoto, K.; Yoshioka, Osamu; Okumura, Toyoki; Fujii, Keiji; Simojima, K.; Kubokawa, H.

doi:10.1109/tpas.1982.317400

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…The results showed that the rain vibration frequency within the range of 6~20 Hz was not significantly correlated with wind velocity. Tsujimotio et al [5] carried out field measurement of the test line with a span of 353 m in length, equipped with 8-bundled aluminum-steel reinforced conductor, as well as theoretical analysis of spring-mass simulation model, to calculate the possible interphase spacing subjected to wind. The results show that the interphase spacing in a long span will be greatly affected by wind turbulence.…”

Section: Introductionmentioning

confidence: 99%

Large Swing Behavior of Overhead Transmission Lines under Rain-Load Conditions

2018

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In recent years, flashover accidents caused by large swings of overhead conductors that frequently occurred under rain-wind condition, greatly jeopardized the normal operation of power transmission systems. However, the large swing mechanism of overhead conductor under the simultaneous occurrence of rain and wind is not clear yet. Thus, a unified model is proposed with derived stability criterion to analyze the large swing of the overhead conductor. The analytical model is solved by finite element method with the aerodynamic coefficients obtained from simulated rain-wind tests, taking into account the effect of wind velocities, upper rivulet motion, rainfall rates, and rain loads on the large swings of overhead transmission lines. The results show that the proposed model can capture main features of the large swing of overhead conductor, this swing being probably due to the upper rivulet's motion, by which negative aerodynamic damping occurs at a certain range of wind velocity (10 m/s). Furthermore, the peak swing amplitude of the overhead conductors under rain-wind condition is larger than that under wind only, and the rain loads cannot be neglected.

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Section: Introductionmentioning

confidence: 99%