影响输电线路长度的主要因素分析  

Analysis on Main Factors Impacting Length of Transmission Line

作　　者：陈玥云[1] 覃剑[2] 刘巍 陈树勇[2] 朱峰 

机构地区：[1]东北电力大学电气工程学院,吉林省吉林市132012 [2]中国电力科学研究院,北京市海淀区100085 [3]北京市超高压公司,北京市房山区102401 [4]济宁市供电公司,山东省济宁市272013

出　　处：《电网技术》2007年第14期41-44,共4页Power System Technology

摘　　要：分析了弧垂、环境温度、负荷电流等因素对线路长度的影响,计算了各因素引起的最大线长误差范围。结果表明,各种因素共同作用所引起的线长误差不超过1km,造成的行波测距误差不超过500m。因此在线路长度勘测误差为0时,实际线长误差对行波测距结果影响很小,不需要在测距装置运行时采取措施修正线路长度。The authors analyze the impact of such factors as sag of the span, environment temperature, load current on length of transmission line and so on, calculate the maximum line length error range caused by above-mentioned factors. Calculation results show that due to combined action of these factors, line length error does not exceed lkm and the engendered error of traveling wave fault location is less than 500m. Thus, actual line length error slightly impacts the results of traveling wave fault location while the survey error of line length is zero, so it is not necessary to modify the line length during the operation of traveling wave fault location device.

关 键 词：线路长度 弧垂 温度 测距误差 

分 类 号：TM762.3[电气工程—电力系统及自动化] TM711