diff --git a/testHasttable/cimexporter.cpp b/testHasttable/cimexporter.cpp
index 6f70022..e84ad1f 100644
--- a/testHasttable/cimexporter.cpp
+++ b/testHasttable/cimexporter.cpp
@@ -136,10 +136,20 @@ void CIMExporter::exportTo(const QString& path,const QString &rootID)
             writer<<seqN++<<seperator;
             writer<<l.fromNum<<seperator;
             writer<<l.toNum<<seperator;
-            writer<<l.line->r<<seperator;
-            writer<<l.line->x<<seperator;
-            writer<<l.line->b1<<seperator;
-            writer<<l.line->b2<<seperator;
+            if(l.id==rootID && static_cast<int>(l.length)==0)
+            {
+                writer<<0.01<<seperator;
+                writer<<0.01<<seperator;
+                writer<<0<<seperator;
+                writer<<0<<seperator;
+            }
+            else
+            {
+                writer<<l.line->r<<seperator;
+                writer<<l.line->x<<seperator;
+                writer<<l.line->b1<<seperator;
+                writer<<l.line->b2<<seperator;
+            }
             writer<<endLine;
 //            writer<<"type"<<seperator;
 //            writer<<l.id<<"\t";
diff --git a/testHasttable/element/line.cpp b/testHasttable/element/line.cpp
index bd28478..3842c36 100644
--- a/testHasttable/element/line.cpp
+++ b/testHasttable/element/line.cpp
@@ -8,15 +8,16 @@ Line::Line(const QPair<QString,QString>& fromTo, ACLineSegment* ac, QObject *par
 }
 
 
+
 void Line::extract()
 {
     //用YJV22-3x240
     ACLineSegment *ac=this->ac;
     double length=ac->getLength();
-    if((int)length==0)
-    {
-        std::cout<<"line length zeros "<<ac->getID().toStdString()<<std::endl;
-    }
+//    if((int)length==0)
+//    {
+//        std::cout<<"line length zeros "<<ac->getID().toStdString()<<std::endl;
+//    }
     //单位阻抗
     double rn0=0.0958;//单位电阻有名值
     double xn0=0.0881;//单位电抗有名值
@@ -24,11 +25,11 @@ void Line::extract()
     double x0=xn0/(10.5*10.5/1000);
     double g0=0;
     double b0=0;
-    this->r=r0*length;
-    this->x=x0*length;
-    this->g1=g0*length;
-    this->g2=g0*length;
-    this->b1=b0*length;
-    this->b2=b0*length;
-    this->length=length;
+    this->r=r0*length/1000;//length的单位是米
+    this->x=x0*length/1000;
+    this->g1=g0*length/1000;
+    this->g2=g0*length/1000;
+    this->b1=b0*length/1000;
+    this->b2=b0*length/1000;
+    this->length=length/1000;
 }
diff --git a/testHasttable/element/line.h b/testHasttable/element/line.h
index b335dcd..f529d6f 100644
--- a/testHasttable/element/line.h
+++ b/testHasttable/element/line.h
@@ -10,6 +10,7 @@ public:
     Line(const QPair<QString, QString> &fromTo, ACLineSegment* ac,QObject* parent=0);
     double length;
     ACLineSegment *ac;
+
 protected:
     virtual void extract();
 private:
diff --git a/testHasttable/elementreduction.cpp b/testHasttable/elementreduction.cpp
index bb61b08..755fb92 100644
--- a/testHasttable/elementreduction.cpp
+++ b/testHasttable/elementreduction.cpp
@@ -21,12 +21,14 @@ void ElementReduction::calibration(const QString &id,QHash<QString,BranchStruc *
         idToBranch[id]->fromID.swap(idToBranch[id]->toID);
     }
 
-    LineStru *line=static_cast<LineStru *>(idToBranch[id]);
-    if(0==static_cast<int>(line->length))
-    {
-        line->length=10;
-        line->line->length=10;
-    }
+//    LineStru *line=static_cast<LineStru *>(idToBranch[id]);
+//    if(0==static_cast<int>(line->length))
+//    {
+//        std::cout<<"is zeros"<<line->id.toStdString()<<std::endl;
+//        line->length=10;
+//        line->line->length=10;
+
+//    }