clip i0

Signed-off-by: Nitish Bharambe <nitish.bharambe@alliander.com>

src/power_grid_model_io/converters/pandapower_converter.py

@@ -747,8 +747,13 @@ def _create_pgm_input_transformers(self):  # pylint: disable=too-many-statements
         pgm_transformers["sn"] = sn_mva * parallel * 1e6
         pgm_transformers["uk"] = vk_percent * 1e-2
         pgm_transformers["pk"] = vkr_percent * sn_mva * parallel * (1e6 * 1e-2)
-        pgm_transformers["i0"] = i_no_load * 1e-2
         pgm_transformers["p0"] = pfe * parallel * 1e3
+        pgm_transformers["i0"] = i_no_load * 1e-2
+        if any(np.less(pgm_transformers["i0"], pgm_transformers["p0"] / pgm_transformers["sn"])):
+            logger.warning("Minimum value of i0 is clipped to p0/sn")
+            pgm_transformers["i0"] = np.clip(
+                pgm_transformers["i0"], a_min=pgm_transformers["p0"] / pgm_transformers["sn"], a_max=None
+            )
         pgm_transformers["clock"] = clocks
         pgm_transformers["winding_from"] = winding_types["winding_from"]
         pgm_transformers["winding_to"] = winding_types["winding_to"]

tests/unit/converters/test_pandapower_converter_input.py

@@ -822,6 +822,7 @@ def test_create_pgm_input_shunts(mock_init_array: MagicMock, two_pp_objs, conver
 
 @patch("power_grid_model_io.converters.pandapower_converter.initialize_array")
 @patch("power_grid_model_io.converters.pandapower_converter.np.round", new=lambda x: x)
+@patch("power_grid_model_io.converters.pandapower_converter.np.less", new=lambda x, _, **kwargs: x)
 @patch("power_grid_model_io.converters.pandapower_converter.np.divide", new=lambda x, _, **kwargs: x)
 @patch("power_grid_model_io.converters.pandapower_converter.np.bitwise_and", new=lambda x, _: x)
 @patch("power_grid_model_io.converters.pandapower_converter.np.logical_and", new=lambda x, _: x)