diff --git a/storage/src/main/java/com/njcn/gather/storage/service/impl/AdNonHarmonicServiceImpl.java b/storage/src/main/java/com/njcn/gather/storage/service/impl/AdNonHarmonicServiceImpl.java
index f44d520a..07ead85c 100644
--- a/storage/src/main/java/com/njcn/gather/storage/service/impl/AdNonHarmonicServiceImpl.java
+++ b/storage/src/main/java/com/njcn/gather/storage/service/impl/AdNonHarmonicServiceImpl.java
@@ -227,12 +227,18 @@ public class AdNonHarmonicServiceImpl extends ServiceImpl<AdNonHarmonicMapper, A
                 unit="s";
                 break;
             /**
-             * 暂态-持续时间
+             * 相角
              */
             case "VA":
             case "IA":
                 unit="°";
                 break;
+            /**
+             * 电压偏差
+             */
+            case "DELTA_V":
+                unit="%";
+                break;
         }
         return  unit;
     }