diff --git a/dataRead.m b/dataRead.m
index 7f2476f..2a4809e 100644
--- a/dataRead.m
+++ b/dataRead.m
@@ -17,6 +17,7 @@ Balance=nodeNum(setIJ==Balance);
 phaseABCY=sparse(3*length(nodeNum),3*length(nodeNum));
 %把线路型号都给读出来
 linePar=lines(:,1);
+linePar=unique(linePar);
 for I=1:length(linePar)
 [fs30,fs31,fs32,retphaseABCY]=lineWithConfig(setIJ,nodeNum,lineZ,lines,linePar(I),baseHighU);
 %phaseABCY 三相的导纳矩阵3n x 3n 维