Browsing Institutt for elkraftteknikk by Subject "Wind Energy, Electric Power Systems"
Now showing items 1-20 of 26
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AC Electrical Breakdown Strength of Solid Solid Interfaces - A study about the effect of elasticity, pressure and interface conditions
(Master thesis, 2015)In several electrical insulation components, such as cable connectors, joints and penetrators, various solid insulating materials are usually brought in contact, forming interfaces. The dielectric strength of these ... -
Analysis and Optimization of Medium Voltage Line Voltage Regulators
(Master thesis, 2018)In recent years, distribution networks have been facing voltage quality issues due to the influx of renewable energy. Rural areas which are ideal for renewable energy development due to large vacant areas are faced with ... -
Analysis of electromagnetic behavior of Permanent Magnetized (PM) electrical machines in fault modes
(Master thesis, 2017)Over the years, the use of PM machines has been increasing in the offshore wind industry and marine industry. The industries thrive on efficient function of the PM machines. These machines are prone to electro-mechanical ... -
Challenges of the future Danish energy scenario with 50 % wind integration and how electric vehicles adaptive charging can help to mitigate.
(Master thesis, 2015)Denmark aims for a 50% wind integration in 2020. In the current scenario, where wind represents around 34% of domestic consumption, mothballing of conventional power plants and heavy dependency in interconnection lines is ... -
Condition Assessment of Medium Voltage Cable Joints - Dielectric Spectroscopy of Field Grading Materials
(Master thesis, 2017)The electrical properties of a widely used stress control tube for medium voltage heat-shrink joints are examined in this master thesis by using non-destructive laboratory methods. They were determined by use of time domain ... -
Cost benefit analysis of different offshore grid topologies in the North
(Master thesis, 2017)European countries are showing their willingness to reduce their greenhouse gases emissions in the coming years. For example, the Paris agreement within the United Nations Framework Convention on Climate Change (UNFCCC) ... -
DC Cable Short Circuit Fault Protection in VSC-MTDC
(Master thesis, 2015)With the development of offshore wind farms, Voltage Source Converter based High Voltage Direct Current or Multi-terminal High Voltage Direct Current Technology (VSC-HVDC/MTDC) is becoming promising in the field of ... -
DC/DC Converters for Multi-terminal HVDC system for Integrating Offshore Wind Farms
(Master thesis, 2015)The development of far-offshore wind farms and other large-scale renewable energy sources, together with the increasing needs for long distance power transmission is resulting in more HVDC systems being integrated into the ... -
DC/DC Converters for Multi-terminal HVDC Systems - Based on Modular Multilevel Converter
(Master thesis, 2016)The increase in the energy demand has resulted in searching for new energy sources. Due to the increased prices of fossil fuels and the environmental issues, renewable energy sources has become popular in Europe. Renewable ... -
Doubly-Fed Induction Machine for use in Mini-Hydro Power Plants - Technical Assessment
(Master thesis, 2015)Hydropower is the most popular and fastest growing renewable energy technology among all. Environmental and ecological concerns involved with large water reservoirs limited the usage of potentially available sites. Thus, ... -
Electrical Treeing in Insulation Materials for High Voltage AC Subsea Connectors under High Hydrostatic Pressures
(Master thesis, 2017)To enable the next generation subsea boosting and processing facilities, high power electrical connectors are strongly needed and considered one of the most critical components of the system. Electrical tree growth is a ... -
Harmonic analysis of collection grid in offshore wind installations
(Master thesis, 2018)This thesis work has presented a comprehensive harmonic analysis in megawatt offshore wind farms where the permanent magnet synchronous generator (PMSG) is used. Firstly, a detail configuration of the wind energy conversion ... -
Innovative power system event-detection and synchronous plant emulation technique for large wind power plant
(Master thesis, 2017)The subject matter of this thesis report investigates a synthetic inertia and dynamic stability technique for grid inter-connection of large VSC-HVDC connected offshore windfarms. Assuming traditional load frequency control ... -
Interfacing Multi-Megawatt Offshore Wind Turbines with Modular Multilvel Converters.
(Master thesis, 2015)The aim of the master thesis was to investigate the effect of Modular Multilevel Converter (MMC) on wind energy electrical system. In different literature sources MMC is used at the grid side of the turbine. This thesis ... -
Investigation on Fault-ride Through Methods for VSC-HVDC Connected Offshore Wind Farms - Overview and New Proposal for Fault Ride Through
(Master thesis, 2015)Recently, there has been a fast development and deployment of wind energy to meet the increasing electrical power demand and to limit the use of fossil fuels. More and more wind farms are planned far from shore because of ... -
Low Short-Circuit Ratio Connection of Wind Power Plants
(Master thesis, 2015)Primary factor for the site selection during the planning process of the large modern wind farms is the wind climate, which is usually favorable at remote and offshore locations where the public grid is not particularly ... -
Modeling, simulation and control of the alternate arm converter
(Master thesis, 2017)The fast evolving technologies have resulted in an extensive use of the power electronics. More intelligent grids can be made by implementing the power electronic devices. In response to global increasing energy demand and ... -
Modelling and Transient Analysis of a 10 MW Superconducting Wind Turbine Generator
(Master thesis, 2014)Abstract The number of installed wind turbines is growing every year as the need for energy increases in an exponential manner. As the wind turbines are trying to fulfil these requirements, the demand for output power from ... -
Modelling of Modular Multilevel Converters for Fast and Accurate Simulation of Electromagnetic Transient Phenomena in HVDC Applications
(Master thesis, 2016)Modular multilevel converters (MMC) are gradually becoming the technology of choice in high-voltage direct current (HVDC) power transmission for grid integration of large-scale offshore wind farms and multi-terminal HVDC ... -
Optimal placement and sizing of battery energy storage using the genetic algorithm
(Master thesis, 2016)Voltage rise and drop are one of the major problems in low voltage distribution networks. Usually they occur due to the large mismatches in demand and supply of power. An increase in the penetration of renewable energy ...