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Project
Optimal Operation of Hybrid AC/DC Meshed Grids
Direct Current (DC) technology has already a long history for long distance bulk transmission of electric power. As technological developments in this field progressed, applications based on the Voltage Source Converter schemes became available combining independent control of active and reactive power with the possibility for multi-terminal layouts. MeshedDC grids operating as an overlay or a parallel path to the existing alternating current (AC) high voltage systems are becoming a reality now.
Calculation methodologies and simulation tools to analyse the static and dynamic behaviour of such DC systems are a crucial aspect for planning, development and operation of hybrid grids.
The main contribution of this research is the development of mathematical methodologies andapplications for the optimal power flow of the hybrid, meshed AC/DC system for normal and security constrained cases. A unified approach has been followed for fast convergence of the optimisation algorithms. The developed functionalities give flexibility to the optimality objectives so that multi-objective analyses can be performed as well. As an application, the thesis combines all added functionalities into a single tool, proposing the grid operator the most useful control actions to get the highvoltage grid back into a healthy state after an incident occurred.
The development and verification of the methodologies are done with MATPOWER, an open-source power flow and optimal power flow calculation tool for the MATLAB environment.
Calculation methodologies and simulation tools to analyse the static and dynamic behaviour of such DC systems are a crucial aspect for planning, development and operation of hybrid grids.
The main contribution of this research is the development of mathematical methodologies andapplications for the optimal power flow of the hybrid, meshed AC/DC system for normal and security constrained cases. A unified approach has been followed for fast convergence of the optimisation algorithms. The developed functionalities give flexibility to the optimality objectives so that multi-objective analyses can be performed as well. As an application, the thesis combines all added functionalities into a single tool, proposing the grid operator the most useful control actions to get the highvoltage grid back into a healthy state after an incident occurred.
The development and verification of the methodologies are done with MATPOWER, an open-source power flow and optimal power flow calculation tool for the MATLAB environment.
Date:10 Jan 2008 → 19 Mar 2014
Keywords:HVDC, Voltage Source Convertor, calculation models, meshed grids, system planning, regulation and protection, remote control
Disciplines:Modelling, Multimedia processing
Project type:PhD project