Ard control classifier

Author: kbrunik

h2integrate/converters/wind/wind_plant_ard.py

@@ -149,6 +149,7 @@ class ArdWindPlantModel(om.Group):
         3600,
         3600,
     )  # (min, max) time step lengths (in seconds) compatible with this model
+    _control_classifier = "curtailable"
 
     def initialize(self):
         self.options.declare("driver_config", types=dict)