输电线路舞动区域划分方法

Zoning Method for Galloping of Transmission Lines

近年来,我国输电线路舞动事故频繁发生,舞动影响的区域呈逐年扩大的趋势,因此绘制有效的舞动分布图对于从技术性和经济性方面实现差异化的防舞设计具有重要的指导作用。建立科学的舞动区域划分方法是绘制舞动分布图的核心内容,文章介绍了舞动发生频率法和舞动系数法,比较了其适用范围及优缺点,并以辽宁省盘锦、大连地区为例,采用舞动系数法对其进行了舞动区域划分。计算实例表明,舞动系数法得出的舞动强度等级分布与实际情况相符。

In recent years,the accidents caused by galloping of power transmission lines frequently occur,and the area affected by galloping is increasing.Thus it is important to make a galloping distribution map for differential anti-galloping design both in technical and economic aspects.The core for making a galloping distribution map is to establish a scientific zoning method for galloping region.This paper introduces the galloping frequency method and galloping coefficient method and compares their application ranges and their merits and disadvantages.A case study is carried out by taking the Panjin and Dalian regions of the Liaoning provinces as an example and galloping coefficient method is used to make the zoning map of galloping.The case study shows that the distribution of galloping intensity obtained by the galloping coefficient method is in agreement with the practical situation.