高电压技术2018，Vol.44Issue(1)：1-13,13.DOI:10.13336/j.1003-6520.hve.20171227001
用于半波长输电线路的精细化传输线模型
Refined Transmission Line Model for Half-wavelength Transmission Lines
摘要
Abstract
The refined transmission line model was used to study the distribution of voltage and current along the half wavelength transmission lines under complicated environments.Based on the multiconductor transmission line theory,a piecewise modeling method was proposed.Considering the complicated environments,the distribution parameters of the line are solved,and each section of the circuit was connected in series through the chain parameter matrix.Combined with some UHV line parameters and segments,the influences of the soil resistivity,adjacent line,load impedance and hybrid transmission line on distribution of voltage,current and power along the half wavelength transmission line were analyzed.The calculation results show that the soil resistivity will affect the half wavelength transmission lines in the three-phase asymmetric operation of the lines.The influences of adjacent lines on the half wavelength transmission lines are related to their length,distance,and location.The smaller the load impedance is,the greater the maximum voltage along the half wavelength transmission lines is.The influence of hybrid transmission lines on the half wavelength transmission line is related to the proportion and location of the mixed lines.And the voltage and current fluctuations along the line is greater if the proportion is higher.Through detailed analysis,the sag coefficient 1/3 is still suitable for half wavelength transmission lines.So it is necessary to consider complicated environment and establish a refined transmission line model for half wavelength line.关键词
半波长/精细化/传输线/模型/链参数Key words
half-wavelength/refined/transmission line/model/chain parameter引用本文复制引用
焦重庆,汪贝,李昱蓉,孙谊媊,祁晓笑..用于半波长输电线路的精细化传输线模型[J].高电压技术,2018,44(1):1-13,13.基金项目
国家电网公司科技项目(SGXJDK00DJJS1600151).Project supported by Science and Technology Project of SGCC (SGXJDK00DJJS1600151). （SGXJDK00DJJS1600151）
