新疆强风沙尘环境下750kV线路运维技术  

Operation and maintenance techniques for 750 kV transmission lines under severe wind and sand-dust weather in Xinjiang

作　　者：李娟[1] 廖峥[2] 张陵[1] 熊小伏[2] 梁乃锋[1] 张英杰[1] 康玉函 周二彪[1] 

机构地区：[1]国网新疆电力公司经济技术研究院,新疆乌鲁木齐830011 [2]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044

出　　处：《电力系统保护与控制》2017年第2期123-130,共8页Power System Protection and Control

摘　　要：为了保证大风及强沙尘环境下特高压输电线路的正常运维,确保输电线路及电网安全,针对750 kV特高压输电线路提出了防范强风沙尘侵害的措施。通过总结新疆地区气象特征,分析新疆电网输电线路在强风沙尘作用下可能出现的故障现象,从防范绝缘子伞裙破裂、金具和引流线磨损等方面给出了具体的技术方法。结合新疆750 kV输电线路实际发生的故障案例以及故障处置对策,说明了该方法对于提升750 kV特高压输电线路的耐受强风沙尘能力是有效和实用的,可为后续强风沙尘地区的输电线路设计及高可靠性运行提供有益借鉴。To ensure the normal operations of UHV transmission lines under strong wind and sand-dust conditions and the safety of transmission line and power grid,the prevention measures to encroachments by strong wind and sand-dust are presented in allusion to the 750 kV UHV transmission lines.Through summarizing the meteorological characteristics of Xinjiang region and analyzing the fault events that may occur in transmission lines of Xinjiang power grid under the effect of strong wind and sand-dust conditions,including the particular technical methods to prevent from shed skirt fracture of insulator,wear and tear of metal fittings and jumper conductors of UHV transmission lines,etc.Combining with some actual fault cases and the corresponding fault disposal measures of 750 kV transmission line in Xinjiang,it shows that this method is practical and effective in improving the ability of enduring strong wind and sand-dust conditions for 750 kV UHV transmission lines,and can be used in future design and provide valuable reference for transmission lines operating with high reliability in strong wind and sand-dust area.

关 键 词：气象灾害 线路故障 运行维护 强风 沙尘 

分 类 号：TM75[电气工程—电力系统及自动化]