相关法在脉冲反射电缆故障定位中的应用

The application of correlation method in cable fault location using pulse reflection

分析了脉冲反射法电缆故障定位中存在的问题 ,在经典相关法基础上 ,根据故障电缆反射波形所具有的特点 ,提出了相关值 相关系数法 .并针对故障点前有接头的情形 ,综合利用相关值和相关系数两个判据进行了故障定位 .现场记录的数据分析证明 。

The problems in cable fault location using th e pulse reflect method are analyzed. Based on the classical correlation method, a correlation value-corre lation coefficient method is proposed according to the characteristics of reflec ted wave of fault cable. In the case of a tie-in ahead of a fault position, t he cable fault location is achieved by using two criteria, i. e. both correlatio n value and correlation coefficient, and the analysis of field data demonstrates the improved precision and reliability of this method in cable fault location.