特高压OPGW结构的研究  

Study on the structure of OPGW for Ultra-High Voltage grid transmission line

作　　者：朱发强[1] 

机构地区：[1]浙江电力调度通信中心,浙江杭州310007

出　　处：《电力系统通信》2007年第3期26-32,共7页Telecommunications for Electric Power System

摘　　要：OPGW的性能主要由其结构确定,在无从全面考察特高压OPGW设计、制造、试验、施工及运行经验的前提下,有必要对用于高电压、远距离、大容量输电及大区域负荷联网的特高压线路OPGW结构进行研究。文章在论述了特高压OPGW七个方面的特征后,推荐层绞光纤松套管与中心热挤压厚壁铝管组合的光单元+铝包钢内层圆绞线+铝包钢外层扇形绞线的OPGW结构,重点分析了故障电流及故障电流切除时间、故障电流导致各元件的温升与限制、OPGW的伸长、对光纤的保护、光纤的余长与控制、光纤的选择、雷击的影响、特性参数、绞合线与综合性能、工程配置原则,此外,还提出了选用楔型耐张线夹等方面的建议。Performance of OPGW depends mainly on its structure. Since there is no experience on the designing, manufacturing, testing, constructing and operating of OPGW for UHV line, it＇s necessary to study the structure of OPGW for UHV transmission line applied in both power transmission with high voltage, long distance, large capacity and interconnection of regional power systems. After discussing seven features of OPGW for UHV line, this paper recommends a kind of OPGW structure that adopted optical unit formed of layer twisted loose tube and center hot extrusion with thick aluminum tube plus inner layer round stranded wire of aluminum cladding steel-reinforced plus outer layer fan shape stranded wire of aluminum cladding steel-reinforced. It analyzes emphatically the failure current and the current cutting time, temperature rising caused by failure current and its influence to the units, the tensing of OPGW, fiber protection, the fiber excess length and control, fiber selection, the impact of lightning, specifications, stranded wire and integrated performance, the principles of project configuration etc. This paper also gives advice on the selection of wedge tvoe dead-end-clamp.

关 键 词：高压 光纤复合架空地线 结构 

分 类 号：TN913.33[电子电信—通信与信息系统]