PhD Shafie REZAYI: “System Integration of hybrid DCCB technologies into selective protection strategies”
The objectives of the thesis is to identify the main challenges of applying fully selective FCS in HVDC grid.
The objectives of the thesis is to identify the main challenges of applying fully selective FCS in HVDC grid.
Hydro power plants can be the most prominent solution as they are both renewable & capable of following the load demand by controlling its output.
This manuscript investigates the potential of Integrated Gate-Commutated Thyristors (IGCT) for Modular Multi-Level Converters (MMC).
This work focuses on the transmission grid level and investigates the control of VSCs interfacing renewable sources in hybrid power systems where PE and SG coexist.
The present thesis investigates the concept of a single-ended fault identification algorithm based on the estimation of the fault parameters.
This thesis identify the major challenges when considering the application of non-selective fault clearing strategy to hybrid grid structures and to propose solutions.
A contribution to the development of high-scale HVDC systems, particularly regarding insulation coordination for Voltage Source Converter (VSC) based technologies.
The modelling and analysis are essential in the development of the MFT technology which is attracting lots of research and industrial interest.
The proposed gate driver achieves a better trade-off between losses & conducted emissions compared to the classical series-connected passive resistors for SiC MOSFET gate drivers.
In the framework of the research activities of the High Voltage Substation Equipment program of SuperGrid, it has been proposed to introduce such species by means of an evaporative liquid spray. The interaction between injected droplets and the mixture of hot gases successively flowing into the chamber and vented outside the chamber during the mechanical separation of the electric contacts should allow spray evaporation and transport of the modified gas mixture towards the arc region.