Experimental Study on Mitigation Devices of Aeolian Vibration of Bundled Conductors

Abstract

Aeolian vibration of transmission conductors could cause triggering off shares and broken due to fatigue damage and thus of concern. To ensure the safety of electrical transmission systems, mitigation devices are usually installed on the conductors to suppress the aeolian vibration. This paper investigates effects of three types of such devices on bundled conductors experimentally, including spacer dampers, damping lines and stockbridge dampers. For this purpose, vibration tests of twin and four bundled conductors were designed and carried out according to IEEE standards. Firstly, the vibration characteristic of the twin bundled conductors equipped with the spacer damper and stockbridge damper were tested with different installation configuration of wire damper sets. The vibration tests of four bundled conductors were also carried out, and the energy dissipation power calculation of spacer damper has been given. The calculation method of energy dissipation power calculation of spacer damper can reflect the properties of the energy dissipation and the method is proven to be reasonable according to the test.