| Modern extra high voltage (EHV) and ultra high voltage (UHV) networks requirefaults to be cleared rapidly and selectively as an effective method to increase powertransfer and improve transient stability. The increase of the transmission volumecontinuous to augment and to decrease the corona loss and corona interfere;and considerto the economy and the reliability, bundled conductors are adopted. Subspan oscillationsare a special vibration type to bundled conductor lines. It becomes an urgent problem tostudy the influence of subspan oscillations to disruption of bundled transmission line.Hence, the paper is mainly focused on the analysis of the subspan oscillation tobundled conductors in transmission lines. The mechanics of subspan oscillation areanalyzedand put forward some antivibration method;the mechanics of anti-subspanoscillations of spacer dampers;the spacer dampers of subspan positioning;and a seriesof experiments have been carried on to test result calculated, which is validated to bereasonable and can be used in the real project. Finally, a suit of calculation andemulation software was developed to facilitate the designers. |
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