输电线路分布参数测量方法的改进  

The Improvement of Distribution Parameters Measurement of Transmission Lines

作　　者：肖遥[1] 李澍森[2] 马骞[3] 陈忠[1] 楚金伟[1] 

机构地区：[1]中国南方电网超高压输电公司检修试验中心,广州510663 [2]中国电力科学研究院高压研究所,武汉430074 [3]中国南方电网调度控制中心,广州510623

出　　处：《南方电网技术》2012年第3期22-27,共6页Southern Power System Technology

摘　　要：输电线路参数的精确度对电力系统潮流稳定分析、保护整定、故障定位等至关重要。针对传统的单回输电线路参数测量方法的存在问题,基于线路分布参数模型和等效π电路集中参数模型,推导出输电线路分布参数、等效π电路集中参数、以及短路阻抗与开路阻抗之间的数学关系,实现了线路的分布参数和等值π电路的参数的精确求解,并以算例将所提出的方法与传统方法计算结果进行了对比。The accuracy of power transmission line parameters is very important for the power system stability analysis,relay setting and line fault location.To overcome the shortage of traditional parameter measurement for a single-circuit transmission line,and based on the distribution parameter model and equivalent ？ circuit lumped parameter model of the line,this paper derives out the mathematical relationship of the distribution parameter,equivalent lumped parameter as well as the short-circuit impedance and open circuit impedance of the line so that the distributed parameters and equivalent ？ circuit lumped parameters can be accurately calculated.The comparison between the proposed measurement and the traditional methods is done in certain cases.

关 键 词：输电线路 分布参数 阻抗测量 

分 类 号：TM751[电气工程—电力系统及自动化]