From 511052f5b6457f2641870649710e6e8709240b83 Mon Sep 17 00:00:00 2001
From: Martijn Govers <Martijn.Govers@Alliander.com>
Date: Mon, 2 Jun 2025 08:22:05 +0200
Subject: [PATCH] update examples with python3.13 and pandapower3.1

Signed-off-by: Martijn Govers <Martijn.Govers@Alliander.com>
---
 docs/examples/arrow_example.ipynb             | 152 +++++++-
 .../data/pandapower/example_simple_input.json |  36 +-
 .../pandapower/example_simple_output.json     |  40 +-
 docs/examples/data/tiny-net/sym_output.json   |  40 +-
 docs/examples/data/vision/sym_output.json     |  24 +-
 docs/examples/pandapower_example.ipynb        | 350 +++++++++++++++---
 docs/examples/pgm_json_example.ipynb          | 188 ++++++++--
 docs/examples/vision_example.ipynb            | 214 +++++++++--
 8 files changed, 854 insertions(+), 190 deletions(-)

diff --git a/docs/examples/arrow_example.ipynb b/docs/examples/arrow_example.ipynb
index 84e5d848..b2715d16 100644
--- a/docs/examples/arrow_example.ipynb
+++ b/docs/examples/arrow_example.ipynb
@@ -120,13 +120,6 @@
     "In this example, we use the respective primitive types for the symmetrical attributes and a `FixedSizeListArray` of the primitive types with length 3 for asymmetrical attributes. This results in them being stored as contiguous memory which would enable zero-copy conversion. Other possible workarounds to this are possible, but are beyond the scope of this example."
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -146,10 +139,10 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "-------node scehma-------\n",
+      "-------node schema-------\n",
       "id: int32\n",
       "u_rated: double\n",
-      "-------asym load scehma-------\n",
+      "-------asym load schema-------\n",
       "id: int32\n",
       "node: int32\n",
       "status: int8\n",
@@ -292,7 +285,8 @@
     {
      "data": {
       "text/plain": [
-       "{'id': array([1, 2, 3]), 'u_rated': array([10500., 10500., 10500.])}"
+       "{'id': array([1, 2, 3], dtype=int32),\n",
+       " 'u_rated': array([10500., 10500., 10500.])}"
       ]
      },
      "execution_count": 5,
@@ -373,6 +367,87 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "id",
+         "rawType": "int32",
+         "type": "integer"
+        },
+        {
+         "name": "energized",
+         "rawType": "int8",
+         "type": "integer"
+        },
+        {
+         "name": "u_pu",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u_angle",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "p",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "q",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "e0a1569d-3e2d-49e8-9326-80be633fd4da",
+       "rows": [
+        [
+         "0",
+         "1",
+         "1",
+         "1.000324825742982",
+         "10503.410670301311",
+         "-6.651843181518038e-05",
+         "338777.2462788448",
+         "-3299418.661306348"
+        ],
+        [
+         "1",
+         "2",
+         "1",
+         "1.0028788641128945",
+         "10530.228073185392",
+         "-0.0029317915196012487",
+         "-1.0000002693184182",
+         "-0.5000000701801947"
+        ],
+        [
+         "2",
+         "3",
+         "1",
+         "1.004112854674026",
+         "10543.184974077272",
+         "-0.004341587216862092",
+         "-1.9999998867105226",
+         "-1.4999998507078594"
+        ]
+       ],
+       "shape": {
+        "columns": 7,
+        "rows": 3
+       }
+      },
       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -608,8 +683,8 @@
     {
      "data": {
       "text/plain": [
-       "{'id': array([7, 8]),\n",
-       " 'node': array([2, 3]),\n",
+       "{'id': array([7, 8], dtype=int32),\n",
+       " 'node': array([2, 3], dtype=int32),\n",
        " 'status': array([1, 1], dtype=int8),\n",
        " 'type': array([0, 0], dtype=int8),\n",
        " 'p_specified': array([[1.0e+00, 1.0e-02, 1.1e-02],\n",
@@ -664,6 +739,55 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "0",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "1",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "2",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "582802e2-e012-4e14-9c47-0157e97ec045",
+       "rows": [
+        [
+         "0",
+         "-6.651848125694397e-05",
+         "-2.094461573665813",
+         "2.09432849798745"
+        ],
+        [
+         "1",
+         "-0.0029298831864832267",
+         "-2.0973219974462594",
+         "2.0914640024381836"
+        ],
+        [
+         "2",
+         "-0.004337685507209373",
+         "-2.098732840554144",
+         "2.0900574062078014"
+        ]
+       ],
+       "shape": {
+        "columns": 3,
+        "rows": 3
+       }
+      },
       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -827,7 +951,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": ".venv",
+   "display_name": "venv",
    "language": "python",
    "name": "python3"
   },
@@ -841,7 +965,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.0"
+   "version": "3.13.3"
   },
   "orig_nbformat": 4
  },
diff --git a/docs/examples/data/pandapower/example_simple_input.json b/docs/examples/data/pandapower/example_simple_input.json
index d3533d53..ff63a1f2 100644
--- a/docs/examples/data/pandapower/example_simple_input.json
+++ b/docs/examples/data/pandapower/example_simple_input.json
@@ -1,28 +1,28 @@
 {
   "node":
     [
-      {"id": 0, "u_rated": 110000.0, "id_reference": {"table": "bus", "index": 101}},
-      {"id": 1, "u_rated": 20000.0, "id_reference": {"table": "bus", "index": 102}},
-      {"id": 2, "u_rated": 20000.0, "id_reference": {"table": "bus", "index": 103}},
-      {"id": 3, "u_rated": 30100.0, "id_reference": {"table": "bus", "index": 104}},
-      {"id": 4, "u_rated": 60000.0, "id_reference": {"table": "bus", "index": 105}},
-      {"id": 5, "u_rated": 110000.0, "id_reference": {"table": "bus", "index": 106}}
+      {"id": 0, "u_rated": 110000, "id_reference": {"table": "bus", "index": 101}},
+      {"id": 1, "u_rated": 20000, "id_reference": {"table": "bus", "index": 102}},
+      {"id": 2, "u_rated": 20000, "id_reference": {"table": "bus", "index": 103}},
+      {"id": 3, "u_rated": 30100, "id_reference": {"table": "bus", "index": 104}},
+      {"id": 4, "u_rated": 60000, "id_reference": {"table": "bus", "index": 105}},
+      {"id": 5, "u_rated": 110000, "id_reference": {"table": "bus", "index": 106}}
     ],
   "line":
     [
-      {"id": 6, "from_node": 2, "to_node": 1, "from_status": 1, "to_status": 1, "r1": 0.12792, "x1": 0.0492, "c1": 6.4206e-07, "tan1": 0.0, "i_n": 108.0, "id_reference": {"table": "line", "index": 101}, "pgm_input": {"from_node": 2, "to_node": 1, "i_n": 108.0}}
+      {"id": 6, "from_node": 2, "to_node": 1, "from_status": 1, "to_status": 1, "r1": 0.12792, "x1": 0.0492, "c1": 6.4206e-07, "tan1": 0, "i_n": 108, "id_reference": {"table": "line", "index": 101}, "pgm_input": {"from_node": 2, "to_node": 1, "i_n": 108.0}}
     ],
   "source":
     [
-      {"id": 7, "node": 0, "status": 1, "u_ref": 1.0, "u_ref_angle": 0.0, "sk": 1e+16, "rx_ratio": 0.0, "id_reference": {"table": "ext_grid", "index": 1}, "pgm_input": {"node": 0}}
+      {"id": 7, "node": 0, "status": 1, "u_ref": 1, "u_ref_angle": 0, "sk": 10000000000000000, "rx_ratio": 0, "id_reference": {"table": "ext_grid", "index": 1}, "pgm_input": {"node": 0}}
     ],
   "sym_load":
     [
-      {"id": 8, "node": 2, "status": 1, "type": 0, "p_specified": 575000.0, "q_specified": 55200.0, "id_reference": {"table": "load", "name": "const_power", "index": 101}, "pgm_input": {"node": 2}},
-      {"id": 9, "node": 2, "status": 1, "type": 1, "p_specified": 1275000.0, "q_specified": 122400.0, "id_reference": {"table": "load", "name": "const_impedance", "index": 101}, "pgm_input": {"node": 2}},
-      {"id": 10, "node": 2, "status": 1, "type": 2, "p_specified": 650000.0, "q_specified": 62400.0, "id_reference": {"table": "load", "name": "const_current", "index": 101}, "pgm_input": {"node": 2}},
-      {"id": 18, "node": 4, "status": 1, "type": 0, "p_specified": 100000.0, "q_specified": 100000.0, "id_reference": {"table": "ward", "name": "ward_const_power_load", "index": 34}, "pgm_input": {"node": 4}},
-      {"id": 19, "node": 4, "status": 1, "type": 1, "p_specified": 100000.0, "q_specified": 100000.0, "id_reference": {"table": "ward", "name": "ward_const_impedance_load", "index": 34}, "pgm_input": {"node": 4}},
+      {"id": 8, "node": 2, "status": 1, "type": 0, "p_specified": 575000, "q_specified": 55200, "id_reference": {"table": "load", "name": "const_power", "index": 101}, "pgm_input": {"node": 2}},
+      {"id": 9, "node": 2, "status": 1, "type": 1, "p_specified": 1275000, "q_specified": 122400, "id_reference": {"table": "load", "name": "const_impedance", "index": 101}, "pgm_input": {"node": 2}},
+      {"id": 10, "node": 2, "status": 1, "type": 2, "p_specified": 650000, "q_specified": 62400, "id_reference": {"table": "load", "name": "const_current", "index": 101}, "pgm_input": {"node": 2}},
+      {"id": 18, "node": 4, "status": 1, "type": 0, "p_specified": 100000, "q_specified": 100000, "id_reference": {"table": "ward", "name": "ward_const_power_load", "index": 34}, "pgm_input": {"node": 4}},
+      {"id": 19, "node": 4, "status": 1, "type": 1, "p_specified": 100000, "q_specified": 100000, "id_reference": {"table": "ward", "name": "ward_const_impedance_load", "index": 34}, "pgm_input": {"node": 4}},
       {"id": 20, "node": 4, "status": 1, "type": 0, "p_specified": 71111.11111111111, "q_specified": 34440.68301069173, "id_reference": {"table": "motor", "name": "motor_load", "index": 12}, "pgm_input": {"node": 4}}
     ],
   "shunt":
@@ -31,15 +31,15 @@
     ],
   "transformer":
     [
-      {"id": 12, "from_node": 0, "to_node": 1, "from_status": 1, "to_status": 1, "u1": 110000.0, "u2": 20000.0, "sn": 80000000.0, "uk": 0.17800000000000002, "pk": 8176000.0, "i0": 0.03, "p0": 23200.0, "winding_from": 2, "winding_to": 1, "clock": 1, "tap_side": 0, "tap_pos": 2, "tap_min": -1, "tap_max": 3, "tap_nom": 1, "tap_size": 2200.0, "id_reference": {"table": "trafo", "index": 101}, "pgm_input": {"from_node": 0, "to_node": 1}, "pp_input": {"df": 1.0}}
+      {"id": 12, "from_node": 0, "to_node": 1, "from_status": 1, "to_status": 1, "u1": 110000, "u2": 20000, "sn": 80000000, "uk": 0.17800000000000002, "pk": 8176000, "i0": 0.03, "p0": 23200, "winding_from": 2, "winding_to": 1, "clock": 1, "tap_side": 0, "tap_pos": 2, "tap_min": -1, "tap_max": 3, "tap_nom": 1, "tap_size": 2200, "id_reference": {"table": "trafo", "index": 101}, "pgm_input": {"from_node": 0, "to_node": 1}, "pp_input": {"df": 1.0}}
     ],
   "sym_gen":
     [
-      {"id": 13, "node": 4, "status": 1, "type": 0, "p_specified": 1210000.0, "q_specified": 810000.0, "id_reference": {"table": "sgen", "index": 31}, "pgm_input": {"node": 4}}
+      {"id": 13, "node": 4, "status": 1, "type": 0, "p_specified": 1210000, "q_specified": 810000, "id_reference": {"table": "sgen", "index": 31}, "pgm_input": {"node": 4}}
     ],
   "three_winding_transformer":
     [
-      {"id": 14, "node_1": 2, "node_2": 4, "node_3": 3, "status_1": 1, "status_2": 1, "status_3": 1, "u1": 20000.0, "u2": 60000.0, "u3": 30100.0, "sn_1": 40000000.0, "sn_2": 100000000.0, "sn_3": 50000000.0, "uk_12": 0.1, "uk_13": 0.12, "uk_23": 0.11, "pk_12": 400000.0, "pk_13": 1600000.0, "pk_23": 1000000.0, "i0": 0.001, "p0": 10000.0, "winding_1": 2, "winding_2": 1, "winding_3": 0, "clock_12": 1, "clock_13": 1, "tap_side": 2, "tap_pos": 2, "tap_min": 1, "tap_max": 3, "tap_nom": 2, "tap_size": 903.0, "id_reference": {"table": "trafo3w", "index": 102}, "pgm_input": {"node_1": 2, "node_2": 4, "node_3": 3}}
+      {"id": 14, "node_1": 2, "node_2": 4, "node_3": 3, "status_1": 1, "status_2": 1, "status_3": 1, "u1": 20000, "u2": 60000, "u3": 30100, "sn_1": 40000000, "sn_2": 100000000, "sn_3": 50000000, "uk_12": 0.1, "uk_13": 0.12, "uk_23": 0.11, "pk_12": 400000, "pk_13": 1600000, "pk_23": 1000000, "i0": 0.001, "p0": 10000, "winding_1": 2, "winding_2": 1, "winding_3": 0, "clock_12": 1, "clock_13": 1, "tap_side": 2, "tap_pos": 2, "tap_min": 1, "tap_max": 3, "tap_nom": 2, "tap_size": 903, "id_reference": {"table": "trafo3w", "index": 102}, "pgm_input": {"node_1": 2, "node_2": 4, "node_3": 3}}
     ],
   "link":
     [
@@ -47,10 +47,10 @@
     ],
   "asym_load":
     [
-      {"id": 16, "node": 4, "status": 1, "type": 0, "p_specified": [100000.0, 200000.0, 3000000.0], "q_specified": [10000.0, 10000.0, 10000.0], "id_reference": {"table": "asymmetric_load", "index": 33}, "pgm_input": {"node": 4}}
+      {"id": 16, "node": 4, "status": 1, "type": 0, "p_specified": [100000, 200000, 3000000], "q_specified": [10000, 10000, 10000], "id_reference": {"table": "asymmetric_load", "index": 33}, "pgm_input": {"node": 4}}
     ],
   "asym_gen":
     [
-      {"id": 17, "node": 4, "status": 1, "type": 0, "p_specified": [100000.0, 200000.0, 3000000.0], "q_specified": [10000.0, 10000.0, 10000.0], "id_reference": {"table": "asymmetric_sgen", "index": 32}, "pgm_input": {"node": 4}}
+      {"id": 17, "node": 4, "status": 1, "type": 0, "p_specified": [100000, 200000, 3000000], "q_specified": [10000, 10000, 10000], "id_reference": {"table": "asymmetric_sgen", "index": 32}, "pgm_input": {"node": 4}}
     ]
 }
diff --git a/docs/examples/data/pandapower/example_simple_output.json b/docs/examples/data/pandapower/example_simple_output.json
index 5caee15e..64ffb45e 100644
--- a/docs/examples/data/pandapower/example_simple_output.json
+++ b/docs/examples/data/pandapower/example_simple_output.json
@@ -1,56 +1,56 @@
 {
   "node":
     [
-      {"id": 0, "energized": 1, "u_pu": 0.9999999996523372, "u": 109999.99996175709, "u_angle": -1.798666001063812e-10, "id_reference": {"table": "bus", "index": 101}},
-      {"id": 1, "energized": 1, "u_pu": 0.97374599364253, "u": 19474.9198728506, "u_angle": -0.5239008142519944, "id_reference": {"table": "bus", "index": 102}},
-      {"id": 2, "energized": 1, "u_pu": 0.9730137872763268, "u": 19460.275745526535, "u_angle": -0.5237223960629773, "id_reference": {"table": "bus", "index": 103}},
-      {"id": 3, "energized": 1, "u_pu": 0.9695497239124967, "u": 29183.44668976615, "u_angle": -1.04518706304991, "id_reference": {"table": "bus", "index": 104}},
-      {"id": 4, "energized": 1, "u_pu": 0.9719979160849105, "u": 58319.87496509463, "u_angle": -1.044828700708015, "id_reference": {"table": "bus", "index": 105}},
-      {"id": 5, "energized": 1, "u_pu": 0.9999999996523372, "u": 109999.99996175709, "u_angle": -1.798666001063812e-10, "id_reference": {"table": "bus", "index": 106}}
+      {"id": 0, "energized": 1, "u_pu": 0.9999999996523371, "u": 109999.99996175709, "u_angle": -1.798665986090047e-10, "p": 1798665.9854650497, "q": 3476628.823536259, "id_reference": {"table": "bus", "index": 101}},
+      {"id": 1, "energized": 1, "u_pu": 0.9737459936425311, "u": 19474.919872850624, "u_angle": -0.5239008142519922, "p": 5.817752759336667e-07, "q": -1.649724889732842e-08, "id_reference": {"table": "bus", "index": 102}},
+      {"id": 2, "energized": 1, "u_pu": 0.973013787276328, "u": 19460.27574552656, "u_angle": -0.523722396062975, "p": -2414572.6452724994, "q": -231798.97394613468, "id_reference": {"table": "bus", "index": 103}},
+      {"id": 3, "energized": 1, "u_pu": 0.9695497239124969, "u": 29183.44668976616, "u_angle": -1.0451870630499072, "p": 2.7652163048402266e-08, "q": -4.7673345347640626e-08, "id_reference": {"table": "bus", "index": 104}},
+      {"id": 4, "energized": 1, "u_pu": 0.9719979160849106, "u": 58319.874965094634, "u_angle": -1.0448287007080124, "p": 944410.8940017537, "q": 581081.3221016526, "id_reference": {"table": "bus", "index": 105}},
+      {"id": 5, "energized": 1, "u_pu": 0.9999999996523371, "u": 109999.99996175709, "u_angle": -1.7986661959755467e-10, "p": 0, "q": 0, "id_reference": {"table": "bus", "index": 106}}
     ],
   "line":
     [
-      {"id": 6, "energized": 1, "loading": 0.5930290459172566, "p_from": -1763554.1135053905, "q_from": -1245081.6865976173, "i_from": 64.0471369590637, "s_from": 2158784.7316401307, "p_to": 1765096.6771171533, "q_to": 1169229.7700732222, "i_to": 62.767063741949805, "s_to": 2117230.39246925, "id_reference": {"table": "line", "index": 101}, "pgm_input": {"from_node": 2, "to_node": 1, "i_n": 108.0}}
+      {"id": 6, "energized": 1, "loading": 0.5930290459171291, "p_from": -1763554.1135044317, "q_from": -1245081.6865981761, "i_from": 64.04713695904995, "s_from": 2158784.7316396697, "p_to": 1765096.6771164155, "q_to": 1169229.7700741645, "i_to": 62.767063741946934, "s_to": 2117230.3924691556, "id_reference": {"table": "line", "index": 101}, "pgm_input": {"from_node": 2, "to_node": 1, "i_n": 108.0}}
     ],
   "source":
     [
-      {"id": 7, "energized": 1, "p": 1798666.0004384827, "q": 3476627.872944676, "i": 20.545012571488463, "s": 3914350.6163946516, "pf": 0.4595055928063901, "id_reference": {"table": "ext_grid", "index": 1}, "pgm_input": {"node": 0}}
+      {"id": 7, "energized": 1, "p": 1798665.9854650497, "q": 3476628.823536259, "i": 20.54501696675745, "s": 3914351.4538058625, "pf": 0.4595054906774493, "id_reference": {"table": "ext_grid", "index": 1}, "pgm_input": {"node": 0}}
     ],
   "sym_load":
     [
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-      {"id": 9, "energized": 1, "p": 1207113.6835430216, "q": 115882.91362013007, "i": 35.977469977108086, "s": 1212663.3063904808, "pf": 0.9954236078405161, "id_reference": {"table": "load", "name": "const_impedance", "index": 101}, "pgm_input": {"node": 2}},
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 }
diff --git a/docs/examples/data/tiny-net/sym_output.json b/docs/examples/data/tiny-net/sym_output.json
index eef23250..c712c7fb 100644
--- a/docs/examples/data/tiny-net/sym_output.json
+++ b/docs/examples/data/tiny-net/sym_output.json
@@ -1,38 +1,38 @@
 {
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   "sym_voltage_sensor":
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 }
diff --git a/docs/examples/data/vision/sym_output.json b/docs/examples/data/vision/sym_output.json
index 44fb84ee..73d6e263 100644
--- a/docs/examples/data/vision/sym_output.json
+++ b/docs/examples/data/vision/sym_output.json
@@ -1,24 +1,24 @@
 {
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+      {"id": 7, "energized": 1, "p": 91713.61901001866, "q": 10656.105417735625, "i": 133.26889142389595, "s": 92330.60432266623, "pf": 0.9933176510954981, "id_reference": {"table": "Sources", "key": {"Node.Number": 1, "Subnumber": 1}}, "Name": "Grid"}
     ],
   "sym_load":
     [
-      {"id": 8, "energized": 1, "p": 60000.0, "q": -0.0, "i": 88.39041531500003, "s": 60000.0, "pf": 1.0, "id_reference": {"table": "Loads", "key": {"Node.Number": 3, "Subnumber": 1}}},
-      {"id": 9, "energized": 1, "p": 30000.0, "q": 10000.0, "i": 46.421972270452244, "s": 31622.776601683792, "pf": 0.9486832980505139, "id_reference": {"table": "Loads", "key": {"Node.Number": 4, "Subnumber": 1}}}
+      {"id": 8, "energized": 1, "p": 60000, "q": 0, "i": 88.39041531500004, "s": 60000, "pf": 1, "id_reference": {"table": "Loads", "key": {"Node.Number": 3, "Subnumber": 1}}},
+      {"id": 9, "energized": 1, "p": 30000, "q": 10000, "i": 46.421972270452265, "s": 31622.776601683792, "pf": 0.9486832980505139, "id_reference": {"table": "Loads", "key": {"Node.Number": 4, "Subnumber": 1}}}
     ]
 }
diff --git a/docs/examples/pandapower_example.ipynb b/docs/examples/pandapower_example.ipynb
index 07206538..fbc1ea93 100644
--- a/docs/examples/pandapower_example.ipynb
+++ b/docs/examples/pandapower_example.ipynb
@@ -184,8 +184,10 @@
     {
      "data": {
       "text/plain": [
-       "{6: {'id_reference': {'table': 'line', 'index': 101},\n",
-       "  'pgm_input': {'from_node': 2, 'to_node': 1, 'i_n': 108.0}}}"
+       "{np.int32(6): {'id_reference': {'table': 'line', 'index': 101},\n",
+       "  'pgm_input': {'from_node': np.int32(2),\n",
+       "   'to_node': np.int32(1),\n",
+       "   'i_n': np.float64(108.0)}}}"
       ]
      },
      "metadata": {},
@@ -243,6 +245,117 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "id",
+         "rawType": "int32",
+         "type": "integer"
+        },
+        {
+         "name": "energized",
+         "rawType": "int8",
+         "type": "integer"
+        },
+        {
+         "name": "u_pu",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u_angle",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "p",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "q",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "4d09b19d-5c24-44c9-ad5e-02265582b583",
+       "rows": [
+        [
+         "0",
+         "0",
+         "1",
+         "0.9999999996523371",
+         "109999.99996175709",
+         "-1.798665986090047e-10",
+         "1798665.9854650497",
+         "3476628.823536259"
+        ],
+        [
+         "1",
+         "1",
+         "1",
+         "0.9737459936425311",
+         "19474.919872850624",
+         "-0.5239008142519922",
+         "5.817752759336667e-07",
+         "-1.649724889732842e-08"
+        ],
+        [
+         "2",
+         "2",
+         "1",
+         "0.973013787276328",
+         "19460.27574552656",
+         "-0.523722396062975",
+         "-2414572.6452724994",
+         "-231798.97394613468"
+        ],
+        [
+         "3",
+         "3",
+         "1",
+         "0.9695497239124969",
+         "29183.44668976616",
+         "-1.0451870630499072",
+         "2.7652163048402266e-08",
+         "-4.7673345347640626e-08"
+        ],
+        [
+         "4",
+         "4",
+         "1",
+         "0.9719979160849106",
+         "58319.874965094634",
+         "-1.0448287007080124",
+         "944410.8940017537",
+         "581081.3221016526"
+        ],
+        [
+         "5",
+         "5",
+         "1",
+         "0.9999999996523371",
+         "109999.99996175709",
+         "-1.7986661959755467e-10",
+         "0.0",
+         "-0.0"
+        ]
+       ],
+       "shape": {
+        "columns": 7,
+        "rows": 6
+       }
+      },
       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -289,8 +402,8 @@
        "      <td>0.973746</td>\n",
        "      <td>19474.919873</td>\n",
        "      <td>-5.239008e-01</td>\n",
-       "      <td>1.408570e-07</td>\n",
-       "      <td>-3.370807e-07</td>\n",
+       "      <td>5.817753e-07</td>\n",
+       "      <td>-1.649725e-08</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>2</th>\n",
@@ -309,8 +422,8 @@
        "      <td>0.969550</td>\n",
        "      <td>29183.446690</td>\n",
        "      <td>-1.045187e+00</td>\n",
-       "      <td>-8.295649e-08</td>\n",
-       "      <td>1.430200e-07</td>\n",
+       "      <td>2.765216e-08</td>\n",
+       "      <td>-4.767335e-08</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>4</th>\n",
@@ -339,17 +452,17 @@
       "text/plain": [
        "   id  energized      u_pu              u       u_angle             p  \\\n",
        "0   0          1  1.000000  109999.999962 -1.798666e-10  1.798666e+06   \n",
-       "1   1          1  0.973746   19474.919873 -5.239008e-01  1.408570e-07   \n",
+       "1   1          1  0.973746   19474.919873 -5.239008e-01  5.817753e-07   \n",
        "2   2          1  0.973014   19460.275746 -5.237224e-01 -2.414573e+06   \n",
-       "3   3          1  0.969550   29183.446690 -1.045187e+00 -8.295649e-08   \n",
+       "3   3          1  0.969550   29183.446690 -1.045187e+00  2.765216e-08   \n",
        "4   4          1  0.971998   58319.874965 -1.044829e+00  9.444109e+05   \n",
        "5   5          1  1.000000  109999.999962 -1.798666e-10  0.000000e+00   \n",
        "\n",
        "              q  \n",
        "0  3.476629e+06  \n",
-       "1 -3.370807e-07  \n",
+       "1 -1.649725e-08  \n",
        "2 -2.317990e+05  \n",
-       "3  1.430200e-07  \n",
+       "3 -4.767335e-08  \n",
        "4  5.810813e+05  \n",
        "5 -0.000000e+00  "
       ]
@@ -384,7 +497,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "PGM object #4: {'table': 'bus', 'index': 105}\n",
+      "PGM object #4: {'table': 'bus', 'index': np.int64(105)}\n",
       "Trafo with index=101: 12\n"
      ]
     }
@@ -439,6 +552,84 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "vm_pu",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "va_degree",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "p_mw",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "q_mvar",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "3a8c6fdd-93d5-49f7-8450-3a7d691c3c08",
+       "rows": [
+        [
+         "101",
+         "1.0",
+         "0.0",
+         "-1.877112966259574",
+         "-3.6406001217296193"
+        ],
+        [
+         "102",
+         "0.9931706847471405",
+         "-30.016180879396842",
+         "0.0",
+         "0.0"
+        ],
+        [
+         "103",
+         "0.9924190957743998",
+         "-30.005562579994088",
+         "2.4758143808668986",
+         "0.23767818056322224"
+        ],
+        [
+         "104",
+         "0.9887940005076682",
+         "-59.88770105034655",
+         "0.29331407263198755",
+         "1.6132273994759316"
+        ],
+        [
+         "105",
+         "0.9913716913559967",
+         "-59.86458945686372",
+         "-0.9406071058466838",
+         "-0.5772775339471033"
+        ],
+        [
+         "106",
+         "1.0",
+         "0.0",
+         "0.0",
+         "0.0"
+        ]
+       ],
+       "shape": {
+        "columns": 4,
+        "rows": 6
+       }
+      },
       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -469,36 +660,36 @@
        "      <th>101</th>\n",
        "      <td>1.000000</td>\n",
        "      <td>0.000000</td>\n",
-       "      <td>-1.798661</td>\n",
-       "      <td>-3.476701</td>\n",
+       "      <td>-1.877113</td>\n",
+       "      <td>-3.640600</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>102</th>\n",
-       "      <td>0.973746</td>\n",
-       "      <td>-30.017299</td>\n",
+       "      <td>0.993171</td>\n",
+       "      <td>-30.016181</td>\n",
        "      <td>0.000000</td>\n",
        "      <td>0.000000</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>103</th>\n",
-       "      <td>0.973014</td>\n",
-       "      <td>-30.007075</td>\n",
-       "      <td>2.414572</td>\n",
-       "      <td>0.231799</td>\n",
+       "      <td>0.992419</td>\n",
+       "      <td>-30.005563</td>\n",
+       "      <td>2.475814</td>\n",
+       "      <td>0.237678</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>104</th>\n",
-       "      <td>0.969519</td>\n",
-       "      <td>-59.886045</td>\n",
-       "      <td>0.281990</td>\n",
-       "      <td>1.550945</td>\n",
+       "      <td>0.988794</td>\n",
+       "      <td>-59.887701</td>\n",
+       "      <td>0.293314</td>\n",
+       "      <td>1.613227</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>105</th>\n",
-       "      <td>0.972063</td>\n",
-       "      <td>-59.860441</td>\n",
-       "      <td>-0.944398</td>\n",
-       "      <td>-0.581069</td>\n",
+       "      <td>0.991372</td>\n",
+       "      <td>-59.864589</td>\n",
+       "      <td>-0.940607</td>\n",
+       "      <td>-0.577278</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>106</th>\n",
@@ -513,11 +704,11 @@
       ],
       "text/plain": [
        "        vm_pu  va_degree      p_mw    q_mvar\n",
-       "101  1.000000   0.000000 -1.798661 -3.476701\n",
-       "102  0.973746 -30.017299  0.000000  0.000000\n",
-       "103  0.973014 -30.007075  2.414572  0.231799\n",
-       "104  0.969519 -59.886045  0.281990  1.550945\n",
-       "105  0.972063 -59.860441 -0.944398 -0.581069\n",
+       "101  1.000000   0.000000 -1.877113 -3.640600\n",
+       "102  0.993171 -30.016181  0.000000  0.000000\n",
+       "103  0.992419 -30.005563  2.475814  0.237678\n",
+       "104  0.988794 -59.887701  0.293314  1.613227\n",
+       "105  0.991372 -59.864589 -0.940607 -0.577278\n",
        "106  1.000000   0.000000  0.000000  0.000000"
       ]
      },
@@ -544,6 +735,84 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "vm_pu",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "va_degree",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "p_mw",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "q_mvar",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "ac4bff7a-73fb-4487-946f-30e198c7e2ff",
+       "rows": [
+        [
+         "101",
+         "0.9999999996523371",
+         "-1.0305596975669613e-08",
+         "-1.7986659834260195",
+         "-3.4766288259519906"
+        ],
+        [
+         "102",
+         "0.9737459936425311",
+         "-30.01730554010644",
+         "-2.9266811907291414e-13",
+         "-5.341134965419769e-13"
+        ],
+        [
+         "103",
+         "0.973013787276328",
+         "-30.00708293088739",
+         "2.414572645272564",
+         "0.2317989739459697"
+        ],
+        [
+         "104",
+         "0.9695497239124969",
+         "-59.884807514433554",
+         "0.28200800014161564",
+         "1.551044000779057"
+        ],
+        [
+         "105",
+         "0.9719979160849106",
+         "-59.86427486470656",
+         "-0.9444108940017536",
+         "-0.5810813221016526"
+        ],
+        [
+         "106",
+         "0.9999999996523371",
+         "-1.0305598178224944e-08",
+         "0.0",
+         "0.0"
+        ]
+       ],
+       "shape": {
+        "columns": 4,
+        "rows": 6
+       }
+      },
       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -581,8 +850,8 @@
        "      <th>102</th>\n",
        "      <td>0.973746</td>\n",
        "      <td>-3.001731e+01</td>\n",
-       "      <td>3.026798e-14</td>\n",
-       "      <td>3.019813e-13</td>\n",
+       "      <td>-2.926681e-13</td>\n",
+       "      <td>-5.341135e-13</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>103</th>\n",
@@ -619,7 +888,7 @@
       "text/plain": [
        "        vm_pu     va_degree          p_mw        q_mvar\n",
        "101  1.000000 -1.030560e-08 -1.798666e+00 -3.476629e+00\n",
-       "102  0.973746 -3.001731e+01  3.026798e-14  3.019813e-13\n",
+       "102  0.973746 -3.001731e+01 -2.926681e-13 -5.341135e-13\n",
        "103  0.973014 -3.000708e+01  2.414573e+00  2.317990e-01\n",
        "104  0.969550 -5.988481e+01  2.820080e-01  1.551044e+00\n",
        "105  0.971998 -5.986427e+01 -9.444109e-01 -5.810813e-01\n",
@@ -733,7 +1002,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "\u001b[2m2024-02-07 12:15:14\u001b[0m [\u001b[33m\u001b[1mwarning  \u001b[0m] \u001b[1mZero sequence parameters given in trafo shall be ignored:vkr0_percent, mag0_percent, mag0_rx, si0_hv_partial\u001b[0m\n"
+      "2025-06-02 08:17:08 [warning  ] Zero sequence parameters given in trafo shall be ignored:vkr0_percent, mag0_percent, mag0_rx, si0_hv_partial\n"
      ]
     }
    ],
@@ -799,7 +1068,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "venv",
    "language": "python",
    "name": "python3"
   },
@@ -813,12 +1082,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.9"
-  },
-  "vscode": {
-   "interpreter": {
-    "hash": "6191baaf994abc6c3e7d918f70d2cb3a487f327a3f3fca1519684915289f78b6"
-   }
+   "version": "3.13.3"
   }
  },
  "nbformat": 4,
diff --git a/docs/examples/pgm_json_example.ipynb b/docs/examples/pgm_json_example.ipynb
index 0f7ff034..e46ca5e5 100644
--- a/docs/examples/pgm_json_example.ipynb
+++ b/docs/examples/pgm_json_example.ipynb
@@ -174,6 +174,47 @@
     },
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "id",
+         "rawType": "int32",
+         "type": "integer"
+        },
+        {
+         "name": "u_rated",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "b9b25297-e12b-4040-9951-af02fee36dd3",
+       "rows": [
+        [
+         "0",
+         "1",
+         "10500.0"
+        ],
+        [
+         "1",
+         "2",
+         "10500.0"
+        ],
+        [
+         "2",
+         "3",
+         "10500.0"
+        ]
+       ],
+       "shape": {
+        "columns": 2,
+        "rows": 3
+       }
+      },
       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -230,9 +271,9 @@
     {
      "data": {
       "text/plain": [
-       "{1: {'name': 'First Node'},\n",
-       " 2: {'name': 'Second Node'},\n",
-       " 3: {'name': 'Third Node'}}"
+       "{np.int32(1): {'name': 'First Node'},\n",
+       " np.int32(2): {'name': 'Second Node'},\n",
+       " np.int32(3): {'name': 'Third Node'}}"
       ]
      },
      "metadata": {},
@@ -277,6 +318,87 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
+        },
+        {
+         "name": "id",
+         "rawType": "int32",
+         "type": "integer"
+        },
+        {
+         "name": "energized",
+         "rawType": "int8",
+         "type": "integer"
+        },
+        {
+         "name": "u_pu",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u_angle",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "p",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "q",
+         "rawType": "float64",
+         "type": "float"
+        }
+       ],
+       "ref": "3ee71cef-7325-45b2-8b08-0cf72a1ff4c6",
+       "rows": [
+        [
+         "0",
+         "1",
+         "1",
+         "1.023911675778034",
+         "10751.072595669357",
+         "-0.013054638927056751",
+         "2412359.2976174504",
+         "-3024028.8865525764"
+        ],
+        [
+         "1",
+         "2",
+         "1",
+         "1.0240665324851739",
+         "10752.698591094326",
+         "-0.017637349460499083",
+         "-1009999.9999917591",
+         "-209999.9999941892"
+        ],
+        [
+         "2",
+         "3",
+         "1",
+         "1.0236495952257696",
+         "10748.320749870581",
+         "-0.020182330760261546",
+         "-1019999.9999916556",
+         "-219999.99999405467"
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+       "shape": {
+        "columns": 7,
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       "text/html": [
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@@ -301,6 +423,8 @@
        "      <th>u_pu</th>\n",
        "      <th>u</th>\n",
        "      <th>u_angle</th>\n",
+       "      <th>p</th>\n",
+       "      <th>q</th>\n",
        "    </tr>\n",
        "  </thead>\n",
        "  <tbody>\n",
@@ -311,6 +435,8 @@
        "      <td>1.023912</td>\n",
        "      <td>10751.072596</td>\n",
        "      <td>-0.013055</td>\n",
+       "      <td>2.412359e+06</td>\n",
+       "      <td>-3.024029e+06</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>1</th>\n",
@@ -319,6 +445,8 @@
        "      <td>1.024067</td>\n",
        "      <td>10752.698591</td>\n",
        "      <td>-0.017637</td>\n",
+       "      <td>-1.010000e+06</td>\n",
+       "      <td>-2.100000e+05</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>2</th>\n",
@@ -327,16 +455,18 @@
        "      <td>1.023650</td>\n",
        "      <td>10748.320750</td>\n",
        "      <td>-0.020182</td>\n",
+       "      <td>-1.020000e+06</td>\n",
+       "      <td>-2.200000e+05</td>\n",
        "    </tr>\n",
        "  </tbody>\n",
        "</table>\n",
        "</div>"
       ],
       "text/plain": [
-       "   id  energized      u_pu             u   u_angle\n",
-       "0   1          1  1.023912  10751.072596 -0.013055\n",
-       "1   2          1  1.024067  10752.698591 -0.017637\n",
-       "2   3          1  1.023650  10748.320750 -0.020182"
+       "   id  energized      u_pu             u   u_angle             p             q\n",
+       "0   1          1  1.023912  10751.072596 -0.013055  2.412359e+06 -3.024029e+06\n",
+       "1   2          1  1.024067  10752.698591 -0.017637 -1.010000e+06 -2.100000e+05\n",
+       "2   3          1  1.023650  10748.320750 -0.020182 -1.020000e+06 -2.200000e+05"
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@@ -399,41 +529,41 @@
      "data": {
       "text/markdown": [
        "<pre style='max-height: 160px; overflow: scroll; white-space: pre'>{\n",
-       "  \"line\":\n",
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-       "      {\"id\": 5, \"energized\": 1, \"loading\": 0.22023469237854879, \"p_from\": 1230426.3899934771, \"q_from\": -1742195.1033335815, \"i_from\": 114.52204003684537, \"s_from\": 2132883.7003624667, \"p_to\": -1019999.9999924893, \"q_to\": -219999.99999526862, \"i_to\": 56.04963781959543, \"s_to\": 1043455.7968513072}\n",
+       "      {\"id\": 1, \"energized\": 1, \"u_pu\": 1.023911675778034, \"u\": 10751.072595669357, \"u_angle\": -0.013054638927056751, \"p\": 2412359.2976174504, \"q\": -3024028.8865525764, \"name\": \"First Node\"},\n",
+       "      {\"id\": 2, \"energized\": 1, \"u_pu\": 1.0240665324851739, \"u\": 10752.698591094326, \"u_angle\": -0.017637349460499083, \"p\": -1009999.9999917591, \"q\": -209999.9999941892, \"name\": \"Second Node\"},\n",
+       "      {\"id\": 3, \"energized\": 1, \"u_pu\": 1.0236495952257696, \"u\": 10748.320749870581, \"u_angle\": -0.020182330760261546, \"p\": -1019999.9999916556, \"q\": -219999.99999405467, \"name\": \"Third Node\"}\n",
        "    ],\n",
-       "  \"node\":\n",
+       "  \"line\":\n",
        "    [\n",
-       "      {\"id\": 1, \"energized\": 1, \"u_pu\": 1.0239116757788667, \"u\": 10751.0725956781, \"u_angle\": -0.013054638926272096, \"name\": \"First Node\"},\n",
-       "      {\"id\": 2, \"energized\": 1, \"u_pu\": 1.0240665324860059, \"u\": 10752.698591103062, \"u_angle\": -0.017637349459711085, \"name\": \"Second Node\"},\n",
-       "      {\"id\": 3, \"energized\": 1, \"u_pu\": 1.0236495952266011, \"u\": 10748.320749879313, \"u_angle\": -0.020182330759471272, \"name\": \"Third Node\"}\n",
+       "      {\"id\": 4, \"energized\": 1, \"loading\": 0.4073282784816012, \"p_from\": 2412359.2976174504, \"q_from\": -3024028.8865525764, \"i_from\": 207.7374220256166, \"s_from\": 3868362.4555496057, \"p_to\": -2240426.389983997, \"q_to\": 1532195.1033373945, \"i_to\": 145.73743890160415, \"s_to\": 2714246.1648914265},\n",
+       "      {\"id\": 5, \"energized\": 1, \"loading\": 0.2202346923784938, \"p_from\": 1230426.3899922953, \"q_from\": -1742195.1033316432, \"i_from\": 114.52204003681678, \"s_from\": 2132883.7003602018, \"p_to\": -1019999.9999916556, \"q_to\": -219999.99999405467, \"i_to\": 56.04963781958342, \"s_to\": 1043455.7968502362}\n",
        "    ],\n",
        "  \"source\":\n",
        "    [\n",
-       "      {\"id\": 6, \"energized\": 1, \"p\": 2412359.29761995, \"q\": -3024028.8865554463, \"i\": 207.73742202565188, \"s\": 3868362.455553408, \"pf\": 0.6236125299367373}\n",
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        "    ],\n",
        "  \"sym_load\":\n",
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        "  \"sym_power_sensor\":\n",
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-       "      {\"id\": 401, \"energized\": 1, \"p_residual\": 1.9951151841723913e-05, \"q_residual\": -4.292033395358885e-05},\n",
-       "      {\"id\": 402, \"energized\": 1, \"p_residual\": 240426.38998624976, \"q_residual\": -532195.1033379079},\n",
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-       "      {\"id\": 801, \"energized\": 1, \"p_residual\": 7.510658761589184e-06, \"q_residual\": 4.731381952893798e-06}\n",
+       "      {\"id\": 401, \"energized\": 1, \"p_residual\": 2.2450930003969916e-05, \"q_residual\": -4.5790038427639956e-05},\n",
+       "      {\"id\": 402, \"energized\": 1, \"p_residual\": 240426.38998399736, \"q_residual\": -532195.1033373947},\n",
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+       "      {\"id\": 701, \"energized\": 1, \"p_residual\": 8.240963467187612e-06, \"q_residual\": 5.810796288585607e-06},\n",
+       "      {\"id\": 801, \"energized\": 1, \"p_residual\": 8.344436253082677e-06, \"q_residual\": 5.94532756359456e-06}\n",
        "    ],\n",
        "  \"sym_voltage_sensor\":\n",
        "    [\n",
-       "      {\"id\": 101, \"energized\": 1, \"u_residual\": 8.017919661540418e-08, \"u_angle_residual\": -3.431456507829722e-14},\n",
-       "      {\"id\": 201, \"energized\": 1, \"u_residual\": 8.033307352661723e-08, \"u_angle_residual\": -1.543556948924163e-14},\n",
-       "      {\"id\": 301, \"energized\": 1, \"u_residual\": 8.038902876705833e-08, \"u_angle_residual\": -2.7651492207070305e-15}\n",
+       "      {\"id\": 101, \"energized\": 1, \"u_residual\": 8.892220293432729e-08, \"u_angle_residual\": 7.503407617459601e-13},\n",
+       "      {\"id\": 201, \"energized\": 1, \"u_residual\": 8.90690854404852e-08, \"u_angle_residual\": 7.72562569473223e-13},\n",
+       "      {\"id\": 301, \"energized\": 1, \"u_residual\": 8.912037774422288e-08, \"u_angle_residual\": 7.875089469422392e-13}\n",
        "    ]\n",
        "}\n",
        "</pre>"
@@ -484,7 +614,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "venv",
    "language": "python",
    "name": "python3"
   },
@@ -498,7 +628,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.5"
+   "version": "3.13.3"
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diff --git a/docs/examples/vision_example.ipynb b/docs/examples/vision_example.ipynb
index 53179562..63124a5e 100644
--- a/docs/examples/vision_example.ipynb
+++ b/docs/examples/vision_example.ipynb
@@ -81,6 +81,52 @@
     },
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
+         "type": "integer"
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+        {
+         "name": "id",
+         "rawType": "int32",
+         "type": "integer"
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+        {
+         "name": "u_rated",
+         "rawType": "float64",
+         "type": "float"
+        }
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+       "ref": "18524efb-7540-46b8-aca9-7c0b96125b39",
+       "rows": [
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+         "0",
+         "400.0"
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+         "2",
+         "2",
+         "400.0"
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+        [
+         "3",
+         "3",
+         "400.0"
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+       "shape": {
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+        "rows": 4
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       "text/html": [
        "<div>\n",
        "<style scoped>\n",
@@ -143,7 +189,10 @@
     {
      "data": {
       "text/plain": [
-       "{0: 'First Node', 1: 'Fourth Node', 2: 'Second Node', 3: 'Third Node'}"
+       "{np.int32(0): 'First Node',\n",
+       " np.int32(1): 'Fourth Node',\n",
+       " np.int32(2): 'Second Node',\n",
+       " np.int32(3): 'Third Node'}"
       ]
      },
      "metadata": {},
@@ -199,6 +248,97 @@
    "outputs": [
     {
      "data": {
+      "application/vnd.microsoft.datawrangler.viewer.v0+json": {
+       "columns": [
+        {
+         "name": "index",
+         "rawType": "int64",
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+        {
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+         "rawType": "int32",
+         "type": "integer"
+        },
+        {
+         "name": "energized",
+         "rawType": "int8",
+         "type": "integer"
+        },
+        {
+         "name": "u_pu",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "u_angle",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "p",
+         "rawType": "float64",
+         "type": "float"
+        },
+        {
+         "name": "q",
+         "rawType": "float64",
+         "type": "float"
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+       "ref": "a91f1b17-7cfa-426a-b620-85aeb38d8ca8",
+       "rows": [
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+         "1",
+         "0.9999914213020509",
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+         "-3.921691889422516e-05",
+         "91713.61901001866",
+         "10656.105417735625"
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+        [
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+         "1",
+         "1",
+         "0.9832315221948486",
+         "393.2926088779394",
+         "-0.0034345813942749746",
+         "-29999.999999999956",
+         "-9999.999999999569"
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+         "2",
+         "1",
+         "0.9876620765421241",
+         "395.06483061684963",
+         "-0.0032350422866854467",
+         "-2.6344844955208393e-09",
+         "-8.687020341559513e-10"
+        ],
+        [
+         "3",
+         "3",
+         "1",
+         "0.9797729773054615",
+         "391.9091909221846",
+         "-0.006296501518419477",
+         "-59999.99999999907",
+         "1.218643241873707e-10"
+        ]
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+       "shape": {
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       "text/html": [
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        "<style scoped>\n",
@@ -223,6 +363,8 @@
        "      <th>u_pu</th>\n",
        "      <th>u</th>\n",
        "      <th>u_angle</th>\n",
+       "      <th>p</th>\n",
+       "      <th>q</th>\n",
        "    </tr>\n",
        "  </thead>\n",
        "  <tbody>\n",
@@ -233,6 +375,8 @@
        "      <td>0.999991</td>\n",
        "      <td>399.996569</td>\n",
        "      <td>-0.000039</td>\n",
+       "      <td>9.171362e+04</td>\n",
+       "      <td>1.065611e+04</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>1</th>\n",
@@ -241,6 +385,8 @@
        "      <td>0.983232</td>\n",
        "      <td>393.292609</td>\n",
        "      <td>-0.003435</td>\n",
+       "      <td>-3.000000e+04</td>\n",
+       "      <td>-1.000000e+04</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>2</th>\n",
@@ -249,6 +395,8 @@
        "      <td>0.987662</td>\n",
        "      <td>395.064831</td>\n",
        "      <td>-0.003235</td>\n",
+       "      <td>-2.634484e-09</td>\n",
+       "      <td>-8.687020e-10</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "      <th>3</th>\n",
@@ -257,17 +405,19 @@
        "      <td>0.979773</td>\n",
        "      <td>391.909191</td>\n",
        "      <td>-0.006297</td>\n",
+       "      <td>-6.000000e+04</td>\n",
+       "      <td>1.218643e-10</td>\n",
        "    </tr>\n",
        "  </tbody>\n",
        "</table>\n",
        "</div>"
       ],
       "text/plain": [
-       "   id  energized      u_pu           u   u_angle\n",
-       "0   0          1  0.999991  399.996569 -0.000039\n",
-       "1   1          1  0.983232  393.292609 -0.003435\n",
-       "2   2          1  0.987662  395.064831 -0.003235\n",
-       "3   3          1  0.979773  391.909191 -0.006297"
+       "   id  energized      u_pu           u   u_angle             p             q\n",
+       "0   0          1  0.999991  399.996569 -0.000039  9.171362e+04  1.065611e+04\n",
+       "1   1          1  0.983232  393.292609 -0.003435 -3.000000e+04 -1.000000e+04\n",
+       "2   2          1  0.987662  395.064831 -0.003235 -2.634484e-09 -8.687020e-10\n",
+       "3   3          1  0.979773  391.909191 -0.006297 -6.000000e+04  1.218643e-10"
       ]
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@@ -300,10 +450,10 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "PGM object #0: {'table': 'Nodes', 'key': {'Number': 1}}\n",
-      "PGM object #4: {'table': 'Cables', 'key': {'Number': 6}}\n",
-      "PGM object #7: {'table': 'Sources', 'key': {'Node.Number': 1, 'Subnumber': 1}}\n",
-      "PGM object #9: {'table': 'Loads', 'key': {'Node.Number': 4, 'Subnumber': 1}}\n",
+      "PGM object #0: {'table': 'Nodes', 'key': {'Number': np.int64(1)}}\n",
+      "PGM object #4: {'table': 'Cables', 'key': {'Number': np.int64(6)}}\n",
+      "PGM object #7: {'table': 'Sources', 'key': {'Node.Number': np.int64(1), 'Subnumber': np.int64(1)}}\n",
+      "PGM object #9: {'table': 'Loads', 'key': {'Node.Number': np.int64(4), 'Subnumber': np.int64(1)}}\n",
       "Node with Number=1: 0\n",
       "Cables with Number=6: 4\n",
       "Source with Node.Number=1 and Subnumber=1: 7\n",
@@ -367,27 +517,27 @@
      "data": {
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        "<pre style='max-height: 160px; overflow: scroll; white-space: pre'>{\n",
-       "  \"line\":\n",
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+       "      {\"id\": 0, \"energized\": 1, \"u_pu\": 0.9999914213020509, \"u\": 399.99656852082035, \"u_angle\": -3.921691889422516e-05, \"p\": 91713.61901001866, \"q\": 10656.105417735625, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 1}}, \"ID\": 101, \"Name\": \"First Node\"},\n",
+       "      {\"id\": 1, \"energized\": 1, \"u_pu\": 0.9832315221948486, \"u\": 393.2926088779394, \"u_angle\": -0.0034345813942749746, \"p\": -29999.999999999956, \"q\": -9999.999999999569, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 4}}, \"ID\": 104, \"Name\": \"Fourth Node\"},\n",
+       "      {\"id\": 2, \"energized\": 1, \"u_pu\": 0.9876620765421241, \"u\": 395.06483061684963, \"u_angle\": -0.0032350422866854467, \"p\": -2.6344844955208393e-09, \"q\": -8.687020341559513e-10, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 2}}, \"ID\": 102, \"Name\": \"Second Node\"},\n",
+       "      {\"id\": 3, \"energized\": 1, \"u_pu\": 0.9797729773054615, \"u\": 391.9091909221846, \"u_angle\": -0.006296501518419477, \"p\": -59999.99999999907, \"q\": 1.218643241873707e-10, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 3}}, \"ID\": 103, \"Name\": \"Third Node\"}\n",
        "    ],\n",
-       "  \"node\":\n",
+       "  \"line\":\n",
        "    [\n",
-       "      {\"id\": 0, \"energized\": 1, \"u_pu\": 0.999991421302051, \"u\": 399.9965685208204, \"u_angle\": -3.921691889422987e-05, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 1}}, \"ID\": 101, \"Name\": \"First Node\"},\n",
-       "      {\"id\": 1, \"energized\": 1, \"u_pu\": 0.983231522194849, \"u\": 393.2926088779396, \"u_angle\": -0.003434581394274798, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 4}}, \"ID\": 104, \"Name\": \"Fourth Node\"},\n",
-       "      {\"id\": 2, \"energized\": 1, \"u_pu\": 0.9876620765421245, \"u\": 395.0648306168498, \"u_angle\": -0.003235042286685305, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 2}}, \"ID\": 102, \"Name\": \"Second Node\"},\n",
-       "      {\"id\": 3, \"energized\": 1, \"u_pu\": 0.9797729773054616, \"u\": 391.9091909221847, \"u_angle\": -0.006296501518419363, \"id_reference\": {\"table\": \"Nodes\", \"key\": {\"Number\": 3}}, \"ID\": 103, \"Name\": \"Third Node\"}\n",
+       "      {\"id\": 4, \"energized\": 1, \"loading\": 0.15473990756817338, \"p_from\": 30133.17850372892, \"q_from\": 10050.72185372124, \"i_from\": 46.4218094389901, \"s_from\": 31765.16104978, \"p_to\": -29999.999999999956, \"q_to\": -9999.999999999569, \"i_to\": 46.42197227045202, \"s_to\": 31622.776601683618, \"id_reference\": {\"table\": \"Cables\", \"key\": {\"Number\": 6}}},\n",
+       "      {\"id\": 5, \"energized\": 1, \"loading\": 0.2946347177166623, \"p_from\": 60482.83508911288, \"q_from\": 184.8146853877713, \"i_from\": 88.39041452674708, \"s_from\": 60483.11745342463, \"p_to\": -59999.99999999907, \"q_to\": 1.218643241873707e-10, \"i_to\": 88.39041531499868, \"s_to\": 59999.99999999907, \"id_reference\": {\"table\": \"Cables\", \"key\": {\"Number\": 5}}},\n",
+       "      {\"id\": 6, \"energized\": 1, \"loading\": 0.44422983507392755, \"p_from\": 91713.61901001866, \"q_from\": 10656.105417735625, \"i_from\": 133.26889142389595, \"s_from\": 92330.60432266623, \"p_to\": -90616.0135928418, \"q_to\": -10235.53653910901, \"i_to\": 133.26895052217827, \"s_to\": 91192.25914353436, \"id_reference\": {\"table\": \"Cables\", \"key\": {\"Number\": 4}}}\n",
        "    ],\n",
        "  \"source\":\n",
        "    [\n",
-       "      {\"id\": 7, \"energized\": 1, \"p\": 91713.61901002181, \"q\": 10656.105417760706, \"i\": 133.26889142390465, \"s\": 92330.60432267224, \"pf\": 0.9933176510954675, \"id_reference\": {\"table\": \"Sources\", \"key\": {\"Node.Number\": 1, \"Subnumber\": 1}}, \"Name\": \"Grid\"}\n",
+       "      {\"id\": 7, \"energized\": 1, \"p\": 91713.61901001866, \"q\": 10656.105417735625, \"i\": 133.26889142389595, \"s\": 92330.60432266623, \"pf\": 0.9933176510954981, \"id_reference\": {\"table\": \"Sources\", \"key\": {\"Node.Number\": 1, \"Subnumber\": 1}}, \"Name\": \"Grid\"}\n",
        "    ],\n",
        "  \"sym_load\":\n",
        "    [\n",
-       "      {\"id\": 8, \"energized\": 1, \"p\": 60000.0, \"q\": -0.0, \"i\": 88.39041531500003, \"s\": 60000.0, \"pf\": 1.0, \"id_reference\": {\"table\": \"Loads\", \"key\": {\"Node.Number\": 3, \"Subnumber\": 1}}},\n",
-       "      {\"id\": 9, \"energized\": 1, \"p\": 30000.0, \"q\": 10000.0, \"i\": 46.421972270452244, \"s\": 31622.776601683792, \"pf\": 0.9486832980505139, \"id_reference\": {\"table\": \"Loads\", \"key\": {\"Node.Number\": 4, \"Subnumber\": 1}}}\n",
+       "      {\"id\": 8, \"energized\": 1, \"p\": 60000, \"q\": 0, \"i\": 88.39041531500004, \"s\": 60000, \"pf\": 1, \"id_reference\": {\"table\": \"Loads\", \"key\": {\"Node.Number\": 3, \"Subnumber\": 1}}},\n",
+       "      {\"id\": 9, \"energized\": 1, \"p\": 30000, \"q\": 10000, \"i\": 46.421972270452265, \"s\": 31622.776601683792, \"pf\": 0.9486832980505139, \"id_reference\": {\"table\": \"Loads\", \"key\": {\"Node.Number\": 4, \"Subnumber\": 1}}}\n",
        "    ]\n",
        "}\n",
        "</pre>"
@@ -424,12 +574,12 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
    "source": [
-    "# custom yaml mapping file\n",
+    "Custom yaml mapping file\n",
+    "\n",
+    "```yaml\n",
     "...\n",
     "grid:\n",
     "  Nodes:\n",
@@ -452,7 +602,8 @@
     "          table: Nodes\n",
     "          key:\n",
     "            Number: From.Number\n",
-    "..."
+    "...\n",
+    "```"
    ]
   },
   {
@@ -519,7 +670,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "venv",
    "language": "python",
    "name": "python3"
   },
@@ -533,12 +684,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.5"
-  },
-  "vscode": {
-   "interpreter": {
-    "hash": "6191baaf994abc6c3e7d918f70d2cb3a487f327a3f3fca1519684915289f78b6"
-   }
+   "version": "3.13.3"
   }
  },
  "nbformat": 4,