DKMahto / fem_future_distribution_grids

Future Distribution Grids

The goal of this project is to enhance the EE4375: Finite Element Modelling for Electrical Energy Applications course. It mostly entails applying finite element method (FEM) knowledge to the modeling of a power transformer's magnetic field, thermal field, and electrical circuit parameters.

The code is mostly written in Julia, a programming language, and is used to construct FEM models to calculate the iron and copper losses in power transformers and, in addition, to analyze the substation's temperature.

Contents

• Navigation Pane: Use this file to navigate around the repository

• Documentation: Contains documentation of the required material

• lib: Contains files for the required user defined functions

• General FEM: General code for FEM models

  • first_order: Use of first order elements
    • triangle: Use of triangular elements
      • E-shaped Ferrite Core Transformer Geometry and FEM Modelling
      • STEDIN Transformer Geometry and FEM Modelling
    • quadrilateral: Use of quadrilateral elements
    • hybrid: Use of hybrid meshing
      • STEDIN Transformer Hybrid Geometry
  • second_order: Use of second order elements
    • triangle: Use of triangular elements
      • E-shaped Ferrite Core Transformer Geometry and FEM Modelling

• Magnetic Field Simulations

  • Frequency Domain
    • Current-fed Analysis : Without Eddy Currents: FEM Analysis with no conductivity of the core
    • Current-fed Analysis : With Eddy Currents: FEM Analysis with presence of conductivity of the core
    • Voltage-fed Coupled Circuit Analysis: FEM Analysis for Voltage-fed Couple Circuit Analysis
    • Voltage-fed Analysis : Non-Linear BH Curve: FEM Analysis incorporating non-linearity of the core material
  • Time Domain
    • Current-fed Analysis: FEM Analysis with presence of Current-fed coils
    • Current-fed Analysis : Non-Linear BH Curve: FEM Analysis incorporating non-linearity of the core material
    • Voltage-fed Coupled Circuit Analysis: FEM Analysis for Voltage-fed Couple Circuit Analysis
    • Voltage-fed Analysis : Non-Linear BH Curve: FEM Analysis incorporating non-linearity of the core material

• General structure of subfolders :

  • img: Contains images obtained
  • mesh: Contains GMSH output files
  • modelling: Contains .ipynb files for the required code
  • vtk: Contains .vtu files for Paraview visualization

Useful Links

• Description of the project and the required work allotment : https://github.com/ziolai/finite_element_electrical_engineering/blob/main/project-based-assignment/modeling_distribution_transformer/modeling_distribution_transformer.ipynb
• Main repository of the EE4375 course : https://github.com/ziolai/finite_element_electrical_engineering
• Repository of Gijs Lagerweij : https://github.com/gijswl/ee4375_fem_ta
• Repository of Auke Schaap and Philip Soliman : https://github.com/aukeschaap/am-transformers
• Thesis of Max van Dijk : https://repository.tudelft.nl/islandora/object/uuid%3A15b25b42-e04b-4ff2-a187-773bc170f061?collection=education
• Electrical Equipment and Machines: Finite Element Analysis course (MOOC available on NPTEL, IIT Bombay) PDF: https://drive.google.com/file/d/1wiyJuqohQMM8lPlCGI2hVKD1cLqO6cTP/view
• Electrical Equipment and Machines: Finite Element Analysis course (MOOC available on NPTEL, IIT Bombay) Videos: https://www.youtube.com/playlist?list=PLOzRYVm0a65evnes6W1TFYThU8-4hfqwc
• Finite Element Methods interesting github page: http://hplgit.github.io/INF5620/doc/pub/sphinx-fem/index.html

Refer below for Interactive Navigation in the Repository

Documentation

Documentation

STEDIN Transformer Geometry

• Modelling Code
• Meshed Image
• Normal Image

Frequency Domain Simulations

• Current-fed Analysis : Without Eddy Current Effects

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code

• Current-fed Analysis : With Eddy Current Effects

  • Three-Phase STEDIN Transformer Modelling Code

• Voltage-fed Coupled Circuit Analysis

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code

• Voltage-fed Analysis - Non-Linear BH Curve

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code

Required Code Files - Frequency Domain

• Post Processing
• FEM Code for Current-fed Analysis
• FEM Code for Voltage-fed Analysis

Time Domain Simulations

• Current-fed Analysis

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Three-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Single-Phase STEDIN Transformer Modelling Code

• Current-fed Analysis - Non-Linear BH Curve

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Three-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Single-Phase STEDIN Transformer Modelling Code

• Voltage-fed Coupled Circuit Analysis

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Three-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Single-Phase STEDIN Transformer Modelling Code

• Voltage-fed Analysis - Non-Linear BH Curve

  • Three-Phase STEDIN Transformer Modelling Code
  • Single-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Three-Phase STEDIN Transformer Modelling Code
  • Third Harmonic Single-Phase STEDIN Transformer Modelling Code

Required Code Files - Time Domain

• Post Processing
• FEM Code for Current-fed Analysis
• FEM Code for Voltage-fed Analysis

Other Library Files

• Saving VTK Files Module
• Makie Plots Module
• Fast Sparse Module
• Assemble Matrices Module
• Reading Mesh Data
  • STEDIN Transformer
  • E-Core Transformer