架空输电线路导、地线微风振动成因和防控措施探讨

Discussion on Aeolian Vibration of Conductor and Ground Line of Overhead Transmission Line and Countermeasures

为减少振动对导、地线及金具的危害,电力工作者做了大量的研究工作,迄今为止,规程规范及有关技术文件规定的防振措施(除明确说明针对舞动、次档距振动的除外)都是对微风振动而言,对舞动、次档距振动的控制和预防尚未有很好的解决方案。就微风振动的成因及其危害进行分析和阐述,对普通线路和大跨越线路的防振措施和动弯应变极限值进行了分析比较,提出了防止或减轻导、地线振动的措施、线路防振装置在运行中的要求和注意事项,并针对大跨越线路的测振提出建议。

A lot of studies have been done to reduce the damage of vibration to conductor, ground line and fittings. Until now all anti-vibration measures in regulations and technical documents （unless noted for dance or sub-span vibration） are all for aeolian vibration. There are no better solutions to control and prevent dance and sub-span vibration. Reasons of aeolian vibration and its damage are analyzed and introduced. Anti-vibration measures and the limit value of bending strain of normal line are compared with that of large span line. Measures to prevent or reduce vibration of conductor and ground line, and requirements and notes of anti-vibration device in operation are proposed. Suggestions on the vibration measurement of the large span conductors are also proposed.