微地形区架空输电线路脱冰跳跃特性研究  

Research on Ice-shedding Jumping Characteristics for Overhead Transmission Lines in Micro-Terrain Areas

作　　者：杨俊武 何天璞 李铮 姚璞 李枚 YANG Junwu;HE Tianpu;LI Zheng;YAO Pu;LI Mei(State Grid Xiangtan Power Supply Company,Xiangtan 411100,China)

机构地区：[1]国网湖南省电力有限公司湘潭供电公司,湖南湘潭411100

出　　处：《湖南电力》2024年第5期24-28,共5页Hunan Electric Power

摘　　要：以华中电网某地区近几年来雨雪冰冻天气期间输电线路发生的脱冰跳跃故障数据为样本,研究微地形区架空输电线路脱冰跳跃故障特性与典型脱冰方式。针对微地形区易诱发输电线路脱冰跳跃故障,提出一种新型防脱冰跳跃控制策略。该策略以高压端固定连接金具、绝缘间隔棒、固定拉线为核心,其中绝缘间隔棒高压端通过高压端固定连接金具与导线相连,绝缘间隔棒低压端通过连接金具与固定拉线连接,固定拉线近地端以大地为强制固定点,通过合理分布安装位置,实现对输电线路脱冰跳跃幅度的有效抑制,最后通过实验分析评估该策略的可行性和高效性。This paper studies the ice-shedding jumping characteristics and typical ice-shedding modes of overhead transmission lines in micro-terrain areas,based on the data from ice-shedding jumping faults that occurred during rainy,snowy,and freezing weather in a certain area of the central China power grid in recent years.At the same time,a new anti ice-shedding jumping control strategy is proposed to solve the problem that ice-shedding jumping faults of transmission line is easy to occur in micro-terrain areas.The strategy takes the high voltage end fixed connection fittings,insulation spacers and fixed cables as the core.The high voltage end of the insulation spacer is connected to the wire through the high voltage end fixed connection fittings,and the low voltage end of the insulation spacer is connected to the fixed cable through the connection fittings.The near ground end of the fixed cable is forcibly fixed to the ground.By reasonably distributing the installation positions,it can effectively suppress the ice-shedding jumping amplitude of the transmission lines.The feasibility and efficiency of this strategy are evaluated through experimental analysis.

关 键 词：输电线路 线路故障 故障分析 脱冰跳跃 

分 类 号：TM726[电气工程—电力系统及自动化]