now making pandapower network with multiple slack buses(here, we just used...

now making pandapower network with multiple slack buses(here, we just used ext_grid). PowerFlow runs smoothly to Two slack bus system(islanded)

Signed-off-by: Taeyoung Kim <taeyoung.kim@eonerc.rwth-aachen.de>

examples/quickstart/run_nv_powerflow.log

@@ -76,7 +76,7 @@ INFO:cimpy.cimimport:CIM object Line created : 11 times
 INFO:cimpy.cimimport:CIM object SubGeographicalRegion created : 2 times
 INFO:cimpy.cimimport:CIM object BusbarSection created : 13 times
 INFO:cimpy.cimimport:CIM object TopologicalIsland created : 2 times
-INFO:cimpy.cimimport:Created totally 275 CIM objects in 0.026203155517578125s
+INFO:cimpy.cimimport:Created totally 275 CIM objects in 0.02796316146850586s
 
 
 WARNING:pandapower.auxiliary:numba cannot be imported and numba functions are disabled.

pyvolt/export.py

@@ -441,7 +441,7 @@ class PandapowerWork(Exporter):
             bus_id = pp.create_bus(net, vn_kv=bus['nominalVoltagekV'], name = bus['name'])
             dict_buss[bus["index"]] = bus_id
             
-            if bus["type"] == 1 and not ext_grid_added:
+            if bus["type"] == 1:
                 pp.create_ext_grid(net, bus_id, vm_pu=bus.get("voltageModulePu", 1.0),
                                 name=f"ext_grid_{bus['name']}")
                 ext_grid_added = True