摘要
输电导线等值覆冰厚度的准确测量,对于冰灾防御工作具有重要意义,但是目前还缺少一种能在远距离方便准确地测量输电导线等值覆冰厚度的方法。为此,从导线的基本方程出发推导了导线温度、弧垂与导线等值覆冰厚度的关系式,提出了通过确定导线工作温度和测量弧垂来计算导线等值覆冰厚度的方法,并推导分析了覆冰导线工作温度确定和导线弧垂测量的方法。通过分析导线温度对等值覆冰厚度测量准确度的影响,发现温度变化对于准确测量影响较小乃至基本可以忽略,故取覆冰导线温度区间的中间值-3°C为导线的近似工作温度;而对于导线弧垂的测量,借助于激光测高测距望远镜进行了测量,并推导出了实际测量值与导线弧垂的计算式。该等值覆冰厚度测量方法原理简单,操作方便,适用于人工巡查线路时,辅助人工在远距离方便准确地实现等值覆冰厚度的测量。
The accurate measurement of the transmission line’s equivalent ice covered thickness has an important significance to the defense against the ice storm,but no convenient and accurate method can measure equivalent ice thickness of transmission line.Therefore,according to the basic equation of the wire,we derived the relationship between equivalent ice thickness of conductor,conductor temperature,and the sag,put forward a method that the equivalent ice thickness could be calculated by determining the temperature and the sag of conductor,and analyzed the determination of conductor temperature and method of sag measurement.By analyzing the impact of conductor temperature on the measurement accuracy of equivalent ice covered thickness,we found that the impact was small and even could be ignored,when the conductor temperature changed.Therefore,we took the ice cover conductor temperature range of intermediate values of-3°C as conductor approximate operating temperature,adopted the laser altimeter ranging telescope to measure conductor sag,and derived the equation of the actual measurement values and conductor sag.The equivalents ice covered thickness measurement method is simple,easy to operate and suitable for auxiliary staff to achieve fast and accurate measurement of the ice thickness.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2013年第5期1204-1209,共6页
High Voltage Engineering
基金
国家重点基础研究发展计划(973计划)(2009CB724502)
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512711207)~~
关键词
覆冰
弧垂
输电线路
测量方法
等值覆冰厚度
基本方程
状态方程
ice covered
sag
transmission line
measurement method
equivalent ice covered thickness
the basic equation
equation of state
作者简介
姚陈果1975-，男，博士，教授，博导2003年6月获重庆大学电气工程学院高电压与绝缘技术专业工学博士学位。主要从事电气设备在线监测与故障诊断技术、生物医学中的电工新技术及高电压新技术研究。作为负责人承担3项国家自然科学基金项目研究，作为主研人员参与多项国家、省部级和横向项目研究E—mail：yaochenguo@cqu．edu．cn
张磊1987一，男，硕士生2010年6月获西南大学物理学学士学位。目前在重庆大学输配电装备及系统安全与新技术国家重点实验室攻读硕士学位，主要从事电气设备在线监测与故障诊断技术研究E-mail：20101102006@cqu．edu．cn
