基于分布参数模型的平行双回线故障测距新算法  

Fault locating algorithm for double-circuit line based on distributed parameter

作　　者：黄雄[1] 尹项根[1] 辛振涛[1] 

机构地区：[1]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《电力自动化设备》2003年第11期5-9,共5页Electric Power Automation Equipment

摘　　要：基于输电线路的分布参数模型,提出利用线路两端电量的同杆平行双回线故障测距算法。根据同向正序电压故障分量沿线分布规律,使用搜索的方法确定故障距离,精确地确定各种对称、不对称跨线故障及单回线故障位置。仿真计算表明该算法测距精度高,且不要求两端数据同步,不需要判别故障类型,不存在伪根,不受线路负荷、系统阻抗和过渡电阻的影响。Based on the distributed parameter model of power transmission line,a new fault loca-ting algorithm for double-circuit line using the data of two terminals is presented.According to the distribution regularity of positive voltage's fault component along the transmission line and app-lying search method,it determines accurately the distance of fault point for various symmetric or non-symmetric inter-circuit or single-circuit faults.Furthermore,it does not require the synchronized data of two terminals and fault type identification,eliminates the influence of S/C resistance,line load and system impedance,and there is on false root.

关 键 词：故障测距 平行双回线 分布参数 故障分量 

分 类 号：TM711[电气工程—电力系统及自动化]