diff --git a/model/dml.sql b/model/dml.sql
index b57e9e3..af8838d 100644
--- a/model/dml.sql
+++ b/model/dml.sql
@@ -1,5 +1,26 @@
 
 
+-- grid initialization example
+INSERT INTO 
+	PUBLIC.GRID (NAME, DESCRIPTION, OP)
+VALUES
+	('电网','电网的描述',1);
+
+
+-- zone initialization example
+INSERT INTO 
+	PUBLIC.ZONE (GRID_ID, NAME, DESCRIPTION, OP)
+VALUES
+	(1 ,'区域','区域的描述',1);
+
+
+-- station initialization example
+INSERT INTO 
+	PUBLIC.STATION (ZONE_ID, NAME, DESCRIPTION, IS_LOCAL, OP)
+VALUES
+	(1 ,'厂站','厂站的描述',TRUE,1);
+
+
 -- supported standard component type
 INSERT INTO 
 	PUBLIC.COMPONENT_TYPE (TYPE, NAME, CONFIG)