一种基于参数检测的双端故障测距算法  

A fault location algorithm for two-terminal transmission lines based on parameter detection

作　　者：张晓明[1] 徐岩[1] 王瑜 孙庆彬 王之猛 孙岳 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]山东聊城供电公司,山东聊城252000

出　　处：《电力系统保护与控制》2011年第12期106-111,共6页Power System Protection and Control

摘　　要：提出了一种基于参数检测的双端故障测距算法,仅需双端系统的电气量,通过三相解耦推导出故障测距的解析表达式。该算法能计算出双端系统的非同步角和随着环境影响变化的线路参数,克服了传统故障测距的弊端,不存在伪根问题、算法简单实用、计算量小,无需搜索和迭代,鲁棒性强。该算法也不受故障类型、过渡电阻等因素的影响。高压输电线路采用分布式参数模型,通过ATP-EMTP对该算法进行了仿真验证。A new fault location algorithm based on parameter detection only using analog information of two-terminal system isproposed.The analytical expression of fault location is derived through three-phase decoupling.The algorithm can calculate theunsynchronizing angle of two-terminal system and line parameters affected by the environment.It overcomes the drawbacks of thetraditional fault location algorithms,does not exist the pseudo-root problem,and has the advantages of simpleness,practice,littlecomputation,no need to search and iteration,and strong robustness.The algorithm also does not influenced by fault types,transitionresistance and other factors.The distributed parameter model is adopted in the high-tension transmission line.At last,the proposedfault location algorithm is tested using ATP-EMTP.

关 键 词：故障测距 三相解耦 非同步角 线路参数 分布式模型 

分 类 号：TM762.25[电气工程—电力系统及自动化]