remove voltage step without angles

Author: Sander-Timmerman

state-estimation-assignment/State Estimation Assignment.ipynb

@@ -1,7 +1,6 @@
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@@ -28,7 +27,6 @@
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@@ -286,7 +278,7 @@
     "- print the difference in `q_from` between `se_output_data` and `pf_output_data`\n",
     "- print the difference in `q_to` between `se_output_data` and `pf_output_data`\n",
     "\n",
-    "You should see that while the voltages match quite precisely (in the order of microvolts), the *p* and *q* are way off (in the order of megawatts / mega VARs). This is as expected because we used voltage angles of 0.0."
+    "You should see that both the voltages and the *p* and *q* match quite precisely."
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@@ -311,71 +303,11 @@
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-   "source": [
-    "#  Assignment 5: Add voltage angle measurements\n",
-    "\n",
-    "Now we will update the model by adding voltage angles to the voltage sensors.\n",
-    "We could alter the `input_data` and construct a new Model, but for the purpose of this workshop (and efficiency) we'll supply the voltage angles as `update_data`, which could potentially be a *batch* calculation in other usecases.\n",
-    "\n",
-    "- initialize an update voltage sensor array\n",
-    "- create an update dataset\n",
-    "- perform a state estimation, using the update dataset\n",
-    "- compare the results (as in assignment 4)\n",
-    "\n",
-    "You should see that the voltages match quite precisely (in the order of microvolts), the *p* and *q* do too (in the order of 0.01 watts / VARs), because we used the exact voltage angles from the power flow calculation."
-   ]
-  },
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-   "cell_type": "code",
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-   "id": "8628b888",
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-   "source": [
-    "# TODO: Initialize a voltage sensor update array for 3 sensors\n",
-    "update_sym_voltage_sensor = initialize_array(..., ..., ...)\n",
-    "update_sym_voltage_sensor[\"id\"] = ...\n",
-    "update_sym_voltage_sensor[\"u_angle_measured\"] = ...\n",
-    "\n",
-    "# TODO: Create an update dataset \n",
-    "update_data = {\n",
-    "    ...\n",
-    "}\n",
-    "\n",
-    "# TODO: Validate the update data\n",
-    "assert_valid_batch_data(..., ..., calculation_type=..., symmetric=...)\n",
-    "\n",
-    "# Run the (iterative linear) state estimation\n",
-    "se_output_data_u_angle = model.calculate_state_estimation(\n",
-    "    update_data = update_data,\n",
-    "    symmetric=True,\n",
-    "    error_tolerance=1e-8, \n",
-    "    max_iterations=20, \n",
-    "    calculation_method=CalculationMethod.iterative_linear)\n",
-    "\n",
-    "# TODO: Print the delta u for all nodes (se_output_data_u_angle - pf_output_data)\n",
-    "print(\"-------------- nodes --------------\")\n",
-    "print(\"delta_u:\", ...)\n",
-    "\n",
-    "# TODO: Print the delta p and q for all lines (se_output_data_u_angle - pf_output_data)\n",
-    "print(\"-------------- lines --------------\")\n",
-    "print(\"delta_p_from:\", ...)\n",
-    "print(\"delta_p_to:\", ...)\n",
-    "print(\"delta_q_from:\", ...)\n",
-    "print(\"delta_q_to:\", ...)"
-   ]
-  },
-  {
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    "source": [
-    "# Assignment 6: Add power sensors to the model\n",
+    "# Assignment 5: Add power sensors to the model\n",
     "\n",
     "In common power grids most voltage sensors only measure the voltage magnitude; not the angle. In this assigment we will again use the `input_data` of assignment 3 (with unknown voltage angles) and we will connect power sensors to the model.\n",
     "\n",
@@ -386,7 +318,7 @@
     "- Create a new input data set, including both voltage and power sensors\n",
     "- Use the print statements of assignment 4 to compare the results\n",
     "\n",
-    "You should see that the voltages match quite precisely (in the order of microvolts), the *p* and *q* do too (in the order of watts / VARs)."
+    "You should see that again the voltages match quite precisely (in the order of microvolts), the *p* and *q* do too (in the order of watts / VARs)."
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@@ -450,7 +382,6 @@
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@@ -490,12 +421,11 @@
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    "source": [
-    "# Assignment 7: Time Series Batch Calculation\n",
+    "# Assignment 6: Time Series Batch Calculation\n",
     "\n",
     "Sometimes, it is desirable to see what the state of the power grid was for a number of measurements at different points in time. A typical use case is to see if the voltage or power requirements were not met over the past day.\n",
     "\n",
@@ -522,7 +452,6 @@
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@@ -660,7 +587,7 @@
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