bugfix: safe aggregation of cluster heat buses (cf. pandas-dev/pandas#54161)

Author: fneum

scripts/prepare_sector_network.py

@@ -4100,30 +4100,30 @@ def limit_individual_line_extension(n, maxext):
 
 
 aggregate_dict = {
-    "p_nom": "sum",
-    "s_nom": "sum",
-    "v_nom": "max",
-    "v_mag_pu_max": "min",
-    "v_mag_pu_min": "max",
-    "p_nom_max": "sum",
-    "s_nom_max": "sum",
-    "p_nom_min": "sum",
-    "s_nom_min": "sum",
-    "v_ang_min": "max",
-    "v_ang_max": "min",
-    "terrain_factor": "mean",
-    "num_parallel": "sum",
-    "p_set": "sum",
-    "e_initial": "sum",
-    "e_nom": "sum",
-    "e_nom_max": "sum",
-    "e_nom_min": "sum",
-    "state_of_charge_initial": "sum",
-    "state_of_charge_set": "sum",
-    "inflow": "sum",
+    "p_nom": pd.Series.sum,
+    "s_nom": pd.Series.sum,
+    "v_nom": pd.Series.max,
+    "v_mag_pu_max": pd.Series.min,
+    "v_mag_pu_min": pd.Series.max,
+    "p_nom_max": pd.Series.sum,
+    "s_nom_max": pd.Series.sum,
+    "p_nom_min": pd.Series.sum,
+    "s_nom_min": pd.Series.sum,
+    "v_ang_min": pd.Series.max,
+    "v_ang_max": pd.Series.min,
+    "terrain_factor": pd.Series.mean,
+    "num_parallel": pd.Series.sum,
+    "p_set": pd.Series.sum,
+    "e_initial": pd.Series.sum,
+    "e_nom": pd.Series.sum,
+    "e_nom_max": pd.Series.sum,
+    "e_nom_min": pd.Series.sum,
+    "state_of_charge_initial": pd.Series.sum,
+    "state_of_charge_set": pd.Series.sum,
+    "inflow": pd.Series.sum,
     "p_max_pu": "first",
-    "x": "mean",
-    "y": "mean",
+    "x": pd.Series.mean,
+    "y": pd.Series.mean,
 }