diff --git a/src/views/pqs/voltageSags/sagGovern/businessUser/event/toleranceCurve.vue b/src/views/pqs/voltageSags/sagGovern/businessUser/event/toleranceCurve.vue
index 1674cf6c..072ee05f 100644
--- a/src/views/pqs/voltageSags/sagGovern/businessUser/event/toleranceCurve.vue
+++ b/src/views/pqs/voltageSags/sagGovern/businessUser/event/toleranceCurve.vue
@@ -4,32 +4,18 @@
             <el-form label-width='auto' :inline='true'>
                 <el-form-item label='生产线'>
                     <el-select v-model='form.productLineId'>
-                        <el-option
-                            v-for='item in productLineOptions'
-                            :key='item.id'
-                            :label='item.name'
-                            :value='item.id'
-                        />
+                        <el-option v-for='item in productLineOptions' :key='item.id' :label='item.name'
+                            :value='item.id' />
                     </el-select>
                 </el-form-item>
                 <el-form-item label='终端'>
                     <el-select v-model='form.machineId' placeholder='暂无终端'>
-                        <el-option
-                            v-for='item in machineOptions'
-                            :key='item.id'
-                            :label='item.name'
-                            :value='item.id'
-                        />
+                        <el-option v-for='item in machineOptions' :key='item.id' :label='item.name' :value='item.id' />
                     </el-select>
                 </el-form-item>
                 <el-form-item label='敏感元器件'>
-                    <el-select v-model='form.unitId' placeholder='暂无元器件'>
-                        <el-option
-                            v-for='item in unitOptions'
-                            :key='item.id'
-                            :label='item.name'
-                            :value='item.id'
-                        />
+                    <el-select v-model='form.unitId' placeholder='暂无元器件' @change="changeUnit" clearable>
+                        <el-option v-for='item in unitOptions' :key='item.id' :label='item.name' :value='item.id' />
                     </el-select>
                 </el-form-item>
             </el-form>
@@ -59,12 +45,12 @@
                         <div>
                             <div>
                                 <el-input-number v-model='unit.vtcAmpUpper' controls-position='right'
-                                                 @change='reDrawPic' />
+                                    @change='reDrawPic' />
                                 <span class='ml10' style='color: #333'>p.u.</span>
                             </div>
                             <div class='mt10'>
                                 <el-input-number v-model='unit.vtcTimeUpper' controls-position='right'
-                                                 @change='reDrawPic' />
+                                    @change='reDrawPic' />
                                 <span class='ml10' style='color: #333'>ms</span>
                             </div>
                         </div>
@@ -73,12 +59,12 @@
                         <div>
                             <div>
                                 <el-input-number v-model='unit.vtcAmpLower' controls-position='right'
-                                                 @change='reDrawPic' />
+                                    @change='reDrawPic' />
                                 <span class='ml10' style='color: #333'>p.u.</span>
                             </div>
                             <div class='mt10'>
                                 <el-input-number v-model='unit.vtcTimeLower' controls-position='right'
-                                                 @change='reDrawPic' />
+                                    @change='reDrawPic' />
                                 <span class='ml10' style='color: #333'>ms</span>
                             </div>
                         </div>
@@ -153,8 +139,9 @@ const search = async (id: string, beginTime: string, endTime: string) => {
         unitOptions.value = res.data
         if (unitOptions.value.length > 0) {
             form.unitId = unitOptions.value[0].id
-            unit.value = unitOptions.value[0]
+            unit.value = JSON.parse(JSON.stringify(unitOptions.value[0]))
         }
+
     })
 
     const data = {
@@ -168,6 +155,13 @@ const search = async (id: string, beginTime: string, endTime: string) => {
         reDrawPic()
     })
 
+}
+const changeUnit = (id: any) => {
+    if (id == undefined) return
+    let list = unitOptions.value.filter((item: any) => item.id == id)
+    unit.value = JSON.parse(JSON.stringify(list[0]))
+    reDrawPic()
+
 }
 
 const options = ref()
@@ -178,7 +172,7 @@ const initOptions = () => {
             left: '10px'
         },
         tooltip: {
-            formatter: function(a: any) {
+            formatter: function (a: any) {
                 if (a[0].value[3] == undefined) {
                     return
                 }
@@ -209,7 +203,7 @@ const initOptions = () => {
         series: [
             {
                 type: 'line',
-                color:'#ff0000',
+                color: '#ff0000',
                 data: [
                     [unit.value.vtcTimeUpper / 1000, 0],
                     [unit.value.vtcTimeUpper / 1000, unit.value.vtcAmpUpper],
@@ -222,7 +216,7 @@ const initOptions = () => {
             },
             {
                 type: 'line',
-                color:'#ff0000',
+                color: '#ff0000',
                 data: [
                     [unit.value.vtcTimeLower / 1000, 0],
                     [unit.value.vtcTimeLower / 1000, unit.value.vtcAmpLower],
@@ -261,9 +255,9 @@ const initOptions = () => {
 const reDrawPic = () => {
     //清洗要显示的数据
     if (eventData.value.length > 0) {
-        unOverEvent.value=[]
-        overEvent.value=[]
-        unKnownEvent.value=[]
+        unOverEvent.value = []
+        overEvent.value = []
+        unKnownEvent.value = []
         for (let event of eventData.value) {
             //判断落在哪个区域内
             let eventTime = Number(event.duration) / 1000