对称线路 meaning in English

balanced line
balancedline
pair type line
symmetric line
symmetrical line

Then , this thesis presents an algorithn of 2 - terminal quantity fault location based on synchronous gps sampling . this algorithm conducts fault location with only the 3 - phase fundemental wave voltage and current phasors of the 2 terminals of transmission lines and apples to lines of both symmetrical and asymmetrical parameters , irrelerant to the impedence , fault types and transitional resistance of the 2 terminals of lines
然后，本文提出了一种基于gps同步采样的双端量故障测距算法。该算法仅利用输电线路两端的三相基波电压、电流分量来进行故障定位，不受线路两端系统阻抗、故障类型、过渡电阻等因素的影响，对参数对称线路和非对称线路均适用。