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.
出处
《南方电网技术》
2012年第3期22-27,共6页
Southern Power System Technology
关键词
输电线路
分布参数
阻抗测量
transmission line
distribution parameter
impedance measurement
