Modelica Tutorial with PowerSystems: A tutorial for Modelica simulation
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The document is a tutorial for using Modelica and OpenModelica software to simulate complex physical systems, particularly focusing on thermal simulations and power systems modeling. It provides step-by-step instructions for creating models, executing simulations, and analyzing results for RL circuits, transmission loss, and power grid simulations. Additionally, it discusses the installation process, available tools, and libraries associated with Modelica.
![West Lab
71
HydroDispatch:
HydroDispatch[1] = hydroBase
HydroDispatch[2] = hydroDaily
HydroDispatch[3] = controlHydro
plantDispatch:
plantDispatch[1] = plantSchedule
plantDispatch[2] = secondaryControl
plantDispatch[3] = primaryControl
𝜃 = 𝜔 $ 2𝜋
LoadDispatcher](https://image.slidesharecdn.com/modelicatutorialautosaved-160324155145/85/Modelica-Tutorial-with-PowerSystems-A-tutorial-for-Modelica-simulation-71-320.jpg)
![West Lab
72
PowerPlant
plantDispatch:
plantDispatch[1] = plantSchedule = fuel.u1
plantDispatch[2] = secondaryControl = add.u1
plantDispatch[3] = primaryControl](https://image.slidesharecdn.com/modelicatutorialautosaved-160324155145/85/Modelica-Tutorial-with-PowerSystems-A-tutorial-for-Modelica-simulation-72-320.jpg)
![West Lab
73
HydroPlant
HydroDispatch:
HydroDispatch[1] = hydroBase = riverControl.u
HydroDispatch[2] = hydroDaily = add.u2
HydroDispatch[3] = controlHydro](https://image.slidesharecdn.com/modelicatutorialautosaved-160324155145/85/Modelica-Tutorial-with-PowerSystems-A-tutorial-for-Modelica-simulation-73-320.jpg)
Modelica Tutorial with PowerSystems: A tutorial for Modelica simulation
- 2. West Lab OpenModelica • OS - Linux - Windows - Mac ØPartly supported ØInstall • Homebrew • Macport - Virtual Machine (ubuntu) Ø https://openmodelica.org/download/virtual- machine Ø Installation 1. Install virtualbox 2. Download box file, and vmdk file in same directory 3. Double click the box file Ø Bug: cannot login • Change GUI manager 2
- 3. West Lab 3 1. Modelica introduction 2. Thermal simulation using Modelica 3. Exercise1: RL Circuit 4. Exercise2: Transmission Loss 5. Exercise3: Power World
- 4. West Lab What is Modelica? 4 TUTORIAL – COURSE Introduction to Object-Oriented Modeling and Simulation with Modelica Using OpenModelica Peter Fritzson Copyright (c) Open Source Modelica Consortium Version 2012 https://www.modelica.org/libraries A language for modeling of complex physical system. Primarydesigned for simulation.
- 5. West Lab What is Modelica? 5 TUTORIAL – COURSE Introduction to Object-Oriented Modeling and Simulation with Modelica Using OpenModelica Peter Fritzson Copyright (c) Open Source Modelica Consortium Version 2012 https://www.modelica.org/libraries A language for modeling of complex physical system. Combine multi-domainmodeling
- 6. West Lab What is Modelica? 6 Declarative language Equations and mathematicalfunctions allow acausal modeling, high level specification,increasedcorrectness Multi-domain modeling Combine electrical,mechanical,thermodynamic,hydraulic, biological,control,event, real-time,etc… Everything is a class Strongly typed object-orientedlanguage with a general class concept, Java & MATLAB-like syntax Visual component programming Hierarchical system architecture capabilities Efficient, non-proprietary Efficiencycomparable to C; advanced equation compilation, e.g. 300 000 equations,~ 150 000 lines on standard PC
- 7. West Lab Free/Commercial tools • Simulator - Commercial ØDymola ØCyModelica ØWoflram ØSimulationX - Free ØOpenModelica ØJModelica.org ØModelicac • Editor - Modelica mode for emacs - UltraEdit - Modelica Plugin (for Eclipse) - Modelica Sublime Text Package - OMEditor 7 • Developer site - https://modelica.org/tools
- 8. West Lab Modelica Free/Commercial Libraries 8 • Modelica Library - Modelica - Power system - Vehicle - Mathematics - Chemical - Building https://www.modelica.org/libraries
- 9. West Lab Modelica Tutorial 9 • Exercise 1 - RL Circuit model • Exercise 2 - TransmissionLoss model • Exercise 3 - Power World
- 10. West Lab Exercise 1: RL Circuit 10 • Goal - Making a basic RL circuit model using Modelica language - Executing a simulationand plottingthe result - Understanding the relationshipbetween electrical-thermalenergy • Library - Modelica library
- 11. West Lab Exercise 1: RLC Circuit Modeling 11 Open the OMEdit
- 12. West Lab 12 1. Make a new Package “RLCircuit” 2. Make a new Model “Resistor” 3. Add a extends model 4. Add a parameter “R” 5. Add a equation
- 14. West Lab 14
- 17. West Lab 17 model Resistor equation v = p.v - nv; 0 = p.i - n.i; i = p.i; v = R * i; end Resistor
- 19. West Lab 19 1. Make a new model “RLCircuit” in RLCircuit package 2. Add Inductor, Ground, and sinVoltage from Modelica.Electrical.Analog, and Resistor 3. Connect each other
- 20. West Lab 20 1. Change the stoptime 2. simulate the model
- 21. West Lab Exercise 1: Simulation result 21 Choose the resistor1.v
- 22. West Lab 22 1. Right click the RLCircuit 2. Click the “Duplicate” 3. Choose RLCircuit package as the “Path” 4. Choose the new model
- 23. West Lab 23 1. Right click the resistance 2. Delete the block 3. Replace the resistance to Modelica.Electrical.Analog.Basic.Resistor
- 24. West Lab 24 1. Add FixedTemperature from Modelica.Thermal.HeatTransfer.Sources.FixedTemperature 2. Connect to the replaced resistor
- 25. West Lab 25
- 26. West Lab 26 Simulation results 1. Click the LossPower and v in RLCircuit2 2. Compare the result
- 28. West Lab Exercise 2: Transmission Loss 28 • Goal - Making a simple model representingtransmissionloss using PowerSystems library - Using the icon setting - Understanding the outer/inner variables • Library - PowerSystems
- 29. West Lab 29 1. Open File->System Libraries->PowerSystems 2. Make a new model
- 33. West Lab 33 1. Extend PartialTwoTerminal 2. Add three variables You can search the PartialTwoTerminal here Parameter of the line model
- 34. West Lab 34
- 35. West Lab 35 Replaceable package inherits all functions/variables/settings from PowerSystems library Every model in PowerSystems inherits this PhaseSystem • DC or AC • Phase number • Frequency
- 36. West Lab 36 1. Add equation PhaseSystem.m: Number of reference angle DC: m = 0 AC: m > 0 Equation of the line model
- 37. West Lab 37 if PhaseSystem.m > 0 then omegaRef = der(PhaseSystem.thetaRef(terminal_p.theta)); else omegaRef = 0; end if; v = R * i + omegaRef * L * j(i); zeros(PhaseSystem.n) = terminal_p.i + terminal_n.i; if PhaseSystem.m > 0 then terminal_p.theta = terminal_n.theta; end if Equation of the line model
- 38. West Lab 38 Simulationof the line model
- 39. West Lab 39 1. Set 1. FixedVoltageSource, 2. FixedCurrennt, and 3. System from Powersystem.Generic 2. Open the parameter window of the FixedCurrent by double click and change the parameter Simulationof the line model
- 40. West Lab 40 1. Set 1. FixedVoltageSource, 2. FixedCurrennt, and 3. System from Powersystem.Generic 2. Open the parameter window of the FixedCurrent by double click and change the parameter Simulationof the line model
- 41. West Lab 41 1. Confirm your code is correct Simulationof the line model
- 42. West Lab 42 System: an interface of PhaseSystem setting ”inner” works as a global variable • Omega, theta, and frequency • DC/AC/AC(3phase) • Initial value Simulationof the line model
- 43. West Lab 43 System: an interface of PhaseSystem setting ”inner” works as a global variable • Omega, theta, and frequency • DC/AC/AC(3phase) • Initial value inner PowerSystems.Systemsystem(… Simulationof the line model
- 45. West Lab 45 By clicking the information button, you can see the detailed information of the “System”. Simulationof the line model
- 46. West Lab 46 The result is constant value Simulationof the line model
- 47. West Lab Exercise 3: Power World 47 • Goal - Simulatingthe simplifiedpower grid including ØVoltage ØCurrent ØFrequency - Considering transmissionloss,and voltage conversion - Using dynamic wind and electricityconsumptiondata • Library - PowerSystems * The Power World uses Generic components with the quasi-static ThreePhase_dq because fast electrical transients and asymmetries are neglected. For more precise simulation of power grid, you can use the SPOT from PowerSystems supporting AC 3 phase.
- 48. West Lab Exercise 3: Power World 48 • Goal - Simulatingthe simplifiedpower grid including ØVoltage ØCurrent ØFrequency - Considering transmissionloss,and voltage conversion - Using dynamic wind and electricityconsumptiondata • Library - PowerSystems * The Power World uses Generic components with the quasi-static ThreePhase_dq because fast electrical transients and asymmetries are neglected. For more precise simulation of power grid, you can use the SPOT from PowerSystems supporting AC 3 phase.
- 49. West Lab 49 Exercise 3: Power World 1. Add System from PowerSystems 2. Add PowerPlant, HydroPlant, WindFarm, and City from PowerSystems.Examples.Components
- 50. West Lab 50 You can check the content by 1. Right click the block 2. Choose “Open Class" Exercise 3: Power World
- 51. West Lab 51 Exercise 3: Power World
- 52. West Lab 52 1. Click the “Text View” 2. Change the WindFarm setting Exercise 3: Power World
- 53. West Lab 53 windFarm1(redeclare package PhaseSystem = PowerSystems.PhaseSystems.DirectCurrent) Exercise 3: Power World
- 54. West Lab 54 1. Add VoltageConverter, Inverter and line 2. Double click and change the parameter of VoltageConverter to 380/50 3. Double click and change the PotentialReference of Inverter to false Exercise 3: Power World
- 55. West Lab 55 1. Add VoltageConverter, Inverter and line 2. Double click and change the parameter of VoltageConverter to 380/10 Exercise 3: Power World
- 56. West Lab 56 1. Add LoadDispatcher from PowerSystems.Example.PowerWorld.Components 2. Add RealExpression from Modelica.Blocks.Sources Exercise 3: Power World
- 57. West Lab 57 1. Double click the RealExpression 2. Set the output “y” as “system.omega/2/pi” Exercise 3: Power World
- 58. West Lab 58 “pi” is defined in Modelica.Constants 1. Click “Text View” 2. Add ”import Modelica.Constants.pi;” Exercise 3: Power World
- 59. West Lab 59 1. Just click “OK” when you connect the LoadDispatcher and Plants Exercise 3: Power World
- 60. West Lab 60 Exercise 3: Power World 1. Double click the ”system” 2. Change ini to “tr” (double quotation is required) 3. Change ftype_par to false
- 61. West Lab 61 Exercise 3: Power World 1. Change the stoptime to 86400 60 (sec) * 60 * 24 = 86400
- 62. West Lab 62 Simulationresult: Electricitydemand and supply
- 66. West Lab 66 Two Windfarm model
- 67. West Lab 67 Two Windfarm model
- 68. West Lab SPOT: more precise power-system simulation 68 * The Power World uses Generic components with the quasi-static ThreePhase_dq because fast electrical transients and asymmetries are neglected. For more precise simulation of power grid, you can use the SPOT from PowerSystems supporting AC 3 phase.
- 71. West Lab 71 HydroDispatch: HydroDispatch[1] = hydroBase HydroDispatch[2] = hydroDaily HydroDispatch[3] = controlHydro plantDispatch: plantDispatch[1] = plantSchedule plantDispatch[2] = secondaryControl plantDispatch[3] = primaryControl 𝜃 = 𝜔 $ 2𝜋 LoadDispatcher
- 72. West Lab 72 PowerPlant plantDispatch: plantDispatch[1] = plantSchedule = fuel.u1 plantDispatch[2] = secondaryControl = add.u1 plantDispatch[3] = primaryControl
- 73. West Lab 73 HydroPlant HydroDispatch: HydroDispatch[1] = hydroBase = riverControl.u HydroDispatch[2] = hydroDaily = add.u2 HydroDispatch[3] = controlHydro
- 75. West Lab 75 City
- 76. West Lab Open Modelica Library 76 • Simulation Result city windFarm hydroPlant powerPlant
- 77. West Lab IPSL 77