failing min repro case

Signed-off-by: Santiago Figueroa Manrique <[email protected]>

Author: figueroa1395

tests/data/state_estimation/ill-conditioned-by-link-meshed/input.json

@@ -0,0 +1,35 @@
+{
+  "version": "1.0",
+  "type": "input",
+  "is_batch": false,
+  "attributes": {},
+  "data": {
+    "node": [
+      {"id": 1, "u_rated": 10000},
+      {"id": 2, "u_rated": 10000},
+      {"id": 3, "u_rated": 10000},
+      {"id": 4, "u_rated": 10000}
+    ],
+    "line": [
+      {"id": 5, "from_node": 2, "to_node": 3, "from_status": 1, "to_status": 1, "r1": 0.02, "x1": 0.05, "c1": 1.8e-07, "tan1": 0},
+      {"id": 6, "from_node": 2, "to_node": 4, "from_status": 1, "to_status": 1, "r1": 0.03, "x1": 0.06, "c1": 2.4e-07, "tan1": 0},
+      {"id": 7, "from_node": 3, "to_node": 4, "from_status": 1, "to_status": 1, "r1": 0.04, "x1": 0.07, "c1": 3.0e-07, "tan1": 0}
+    ],
+    "link": [
+      {"id": 8, "from_node": 1, "to_node": 2, "from_status": 1, "to_status": 1}
+      
+    ],
+    "sym_load": [
+      {"id": 9, "node": 4, "status": 1, "type": 0, "p_specified": 0, "q_specified": 0}
+    ],
+    "source": [
+      {"id": 10, "node": 1, "status": 1, "u_ref": 1, "sk": 2727980020, "rx_ratio": 0, "z01_ratio": 3}
+    ],
+    "sym_power_sensor": [
+      {"id": 11, "measured_object": 4, "measured_terminal_type": 9, "p_measured": -752000, "q_measured": 0, "p_sigma": 100, "q_sigma": 95200}
+    ],
+    "sym_voltage_sensor": [
+      {"id": 12, "measured_object": 1, "u_sigma": 525, "u_measured": 10000, "u_angle_measured": 0}
+    ]
+  }
+}

tests/data/state_estimation/ill-conditioned-by-link-meshed/input.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: Contributors to the Power Grid Model project <[email protected]>
+
+SPDX-License-Identifier: MPL-2.0

tests/data/state_estimation/ill-conditioned-by-link-meshed/params.json

@@ -0,0 +1,9 @@
+{
+  "calculation_method": [
+    "newton_raphson"
+  ],
+  "rtol": 1e-8,
+  "atol": {
+    "default": 1e-8
+  }
+}

tests/data/state_estimation/ill-conditioned-by-link-meshed/params.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: Contributors to the Power Grid Model project <[email protected]>
+
+SPDX-License-Identifier: MPL-2.0

tests/data/state_estimation/ill-conditioned-by-link-meshed/sym_output.json

@@ -0,0 +1,7 @@
+{
+  "version": "1.0",
+  "type": "sym_output",
+  "is_batch": false,
+  "attributes": {},
+  "data": {}
+}

tests/data/state_estimation/ill-conditioned-by-link-meshed/sym_output.json.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: Contributors to the Power Grid Model project <[email protected]>
+
+SPDX-License-Identifier: MPL-2.0