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TSTE26 Powergrid and Technology for Renewable Production, 6hp
The course will give knowledge in applications of power electronics, how a power converter operates in a system for energy production as well as the control of the powergrid. Focus is on renewable energy production and its connection and control in a powergrid.
The course has three main blocks:
- Technology for energy production based on pv, wind and hydro sources: Includes the properties of pv-cells and how a pv-system is controlled to obtain high efficiency and economy of energy production. Wind power system is described to give basic understanding of different turbine and generator types, including the mechanical and electrical control systems. Difference between sea- and land based wind power systems. Basics for wave, tidal and dam based hydro power systems.
- The properties of the powergrid related to stability and availability: Handles the power balance between generation and consumption is studied, emphasizing the functions for voltage and frequency control. Needs for energy storage related to day- and seasonal variations in production and consumption.
- Power converter functionality for connection of renewable energy production and control of the powergrid: Principles for energy storages and their connection to the grid or as feeds to isolated loads are presented.
Lectures:
The course has nine lectures that are intended to cover the theory for the course. The table below shows the lecture schedule and the link to the lecture slides that will be used during the lectures is given below.
| Lecture | Content |
|---|---|
| Le 1 Introduction, PV-theory |
Solar radiation, PV-cell, PVtechnology |
| Le 2 PV grid connection |
PV-string configuration, shading MPPT, Load conditions |
| Le 3 Electric power systems |
Power circuit theory, pu-system, transmission lines |
| Le 4 Power system voltage stability |
Load-flow calculation, maximum power curve, voltage collapse, FACTS |
| Le 5 Wind-turbines |
Wind properties, CP-curve, power regulation |
| Le 6 WT grid connection |
Induction machine, Variable speed, Type 1-4 WTG, Grid codes |
| Le 7 Converter control |
DCDC converters and inverters (DC/AC) |
| Le 8 Transient stability, frequency control |
Stability in grids with transients |
| Le 9 Battery systems |
Introduction to energy storage |
The lecture slides will be uploaded to a separate server, and posted there so they are available before the start of the lecture.
Tutorial
The course has seven tutorials covering exercises that prepares and applies the theory for the course topics and also acts as a preparation for the Labs. The tutorials will be uploaded in Lisam.
| Exercise | Content |
|---|---|
| Ex. 1 PV tutorial |
Solar radiation, PV-cell, PV-string configuration, shading MPPT, Introduction to energy storage. |
| Ex. 2 Electrical Power Systems 1: The basics |
Load conditions, Power circuit theory, pu-system |
| Ex. 3 Electrical Power Systems 2: Load flow Analysis |
Transmission lines, Load-flow calculation, maximum power curve. |
| Ex. 4 Electrical Power Systems 3: Reactive power flow |
Maximum power curve, voltage collapse, FACTS |
| Ex. 5 Converter control (Matab/Simulink) |
Park and Clark’s transform. |
| Ex. 6 Electrical Power Systems 4: Transient and dynamic stability |
Stability in grids with transients. |
| Ex. 7 | Energy storage and previous exams. |
Labs
The course includes three labs that are a combination of hardware and simulations. The first is a hardware lab and the other are computer labs in Matlab/Simulink. The lab PMs will be uploaded in Lisam
| Lab | Content | |
|---|---|---|
| La. 1 | PV power generation | |
| La. 2 | Grid-connected Wind power generation | |
| La. 3 | Grid-connected PV power generation |
Contact
Examiner and lecturer: Lars Eriksson, (lars.eriksson@liu.se or phone 013-284409)
Tutorials and labs: Arvind Balachandran, (arvind.balachandran@liu.se or phone 013-281071)