## Active Distribution Grids

Module Number: EI80009

Duration: 1 Semester

Recurrence: Winter Semester

Language: English

Number of ECTS: 5

## Staff

Professor in charge: Prof. Dr. Thomas Hamacher

## Amount of work

Contact hours: 60

Self-study hours. 90

Total. 150

## Description of achievement and assessment methods

The module exam consists of a written exam that lasts 90 minutes. In the exam is evaluated whether the students

understand the general concepts of active distributed grid planning and operation. A part of the exam consists of

mathematical problems where the concepts taught in the lectures are applied to simple examples. The exam will be

graded.

Students are encouraged to solve the homework exercises, either alone or in small groups. The exercises will

sometimes require a code fragment written in MATLAB. If a student submits all the homework in time, he/she will get

a bonus of 0,3 in the final grade.

## (Recommended) requirements:

Fundamental knowledge in:

- Electrical power systems, synchronous machines, balanced load flow

- Power electronics, state space modelling, feedback controllers

- MATLAB be(required), LabVIEW (benefitial)

## Contents

Distribution grids are more important than ever due to the changing energy policies, as higher renewable shares at

consumer level and advent of smart power electronic devices allowing bidirectional power flow. To understand the socalled

Active Distribution Grid, one must first understand how they are traditionally planned, sized and operated. The

lecture will then move to the concept of a Microgrid and how it extends the conventional paradigms. The individual

component modelling and control philosophies for a microgrid will be studied. Tutorials will be provided for methods

explained in these lectures. MATLAB projects will be part of some of these exercises to teach applicability of the

concepts.

## Study goals

After attending the course, the student is able to:

- Describe planning and operational issues of a distribution grid.

- Be able to set up simple dynamical models of a microgrid using MATLAB.

- Perform load flow analysis,

- Design controllers for power electronic based microgrid operation,

## Teaching and learning methods

The lecture consists of presentations conducted by the lecturer. The slides will be provided in Moodle before the

lecture. The blackboard will be used to do some simple calculations. The exercises for the tutorials will also be

uploaded before each tutorial. It is expected that the students try to solve the exercises by themselves - preferably in

teams before discussing them with the tutor. A sample solution will also be uploaded. The tutorials require the participation of the students and it is recommended to bring laptops/tablets to run some code. Besides, the forum

function in Moodle will be used as a platform where the students can ask questions and receive answers from both

the teachers and the other students. Additional functions of Moodle (e.g. quiz) will be eventually used to support the

students in understanding the content of the lectures. There will also be homework exercises that require the use of

MATLAB. A final part of the lecture will be conducted in the CoSES laboratory as a group (3-4 students) activity.

Students will be provided with the pre-installed computers for this part.

## Media formats

Lecture and tutorial with slides and black board. The slides for the lectures and tutorials will be available online

## Literature

Turan Gönen, Electric Power Distribution Engineering, 2015, CRC Press

William H. Kersting, Distribution System Modeling and Analysis, 4th Ed., 2017, CRC Pres

Microgrid Stability Definitions, Analysis, and Modeling, IEEE PES Task Force Report