基于行波传输时差的输电线路覆冰厚度测量方法  

A Transmission Line Icing Thickness Measurement Method Based on the Traveling Wave Transmission Time Differences

作　　者：曾祥君[1] 伍智华[1] 冯凯辉[1] 秦小安[1] 胡湘[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南省长沙市410076

出　　处：《电力系统自动化》2010年第10期81-83,115,共4页Automation of Electric Power Systems

摘　　要：提出了一种基于行波传输时差的输电线路覆冰厚度测量方法。推导了冰厚与线路长度的关系,基于输电线路故障全球定位系统(GPS)行波定位系统精确记录外部故障或操作产生的行波穿越线路的时间,测量输电线路长度的变化,从而计算出冰厚。分析了某地区电网2008年冰灾期间的运行数据,表明了该方法的适用性,可用于输电线路冰灾分析,为合理安排融冰计划提供参考。A novel overhead transmission line icing thickness measurement method based on transmission traveling wave time difference is proposed. Theoretical derivation of the relationship between icing thickness and transmission line length is presented. The traveling time of the traveling wave caused by external fault and operation is recorded by GPS traveling wave fault location system. Transmission line length changes are measured,then the icing thickness can be calculated. The actual operating data of a regional power grid during the 2008 ice disaster shows that the method has applicability and can be adapted to analysis the ice disaster and provide reference for deicing arrangements.

关 键 词：覆冰厚度 电力系统 行波传输时差 行波定位 

分 类 号：TM75[电气工程—电力系统及自动化] P429[天文地球—大气科学及气象学]