diff --git a/main.py b/main.py
index 9ca28fc..2e73b91 100644
--- a/main.py
+++ b/main.py
@@ -270,9 +270,10 @@ def tangent_line_k(line_x, line_y, center_x, center_y, radius, init_k=10.0):
 def egm():
     for u_bar in range(1):
         u_ph = math.sqrt(2) * 750 * math.cos(2 * math.pi / 6 * 0) / 1.732  # 运行相电压
-        h_gav = 140
-        h_cav = h_gav - 9.5 - 2.7 - 5  # 导线对地平均高
-        dgc = 2.9  # 导地线水平距离
+        h_whole = 150  # 杆塔全高
+        h_gav = h_whole - 0.5 - 11.67 * 2 / 3
+        h_cav = h_gav - 9.5 - 2.7 - (14.43 - 11.67) * 2 / 3  # 导线对地平均高
+        dgc = 12  # 导地线水平距离
         # 迭代法计算最大电流
         i_max = 0
         _min_i = 20  # 尝试的最小电流