RT Generic
T1 Multi-terminal HVDC and power flow analysis
A1 Gil Colmenero, Esther
A2 Norwegian University of Science and Technology (NTNU), Department of Electric Power Engineering
AB The aim of this Specialization Project is to implement and demonstrate a general AC/DCpower flow solution in the Matlab environment. This task is interesting from the point of viewof the increasing development of the integration of offshore wind power, especially in theNorth Sea area.The solution proposed in this paper, is valid for systems consisting on one DC grid, each ofits buses is connected to different AC grids. Specifically, this study focuses on a general DCgrid of three nodes and three consequent AC grids.In this project, a complete procedure on how to set-up the power flow model is developedand described. The first step taken in this process consists on the calculation of the powerflows of all the AC grids, in a sequential way. In addition to the calculation of all the involvedAC systems, the DC power flow has to be solved as well. The calculations of both powerflows, AC and DC, have been implemented using the Newton-Raphson solution algorithm. Akey challenge in this procedure has been to model the connection between the AC and DCgrid through the HVDC converters. Several possibilities have been studied, mainlydepending on the type of bus in question. A study and comparison between a converter withor without losses have been done as well.The final achievements of this Specialization Project consist on a Matlab code solvingsuccessfully this matter, highlighting that it is programmed in a general format, so that itenables modifications on the previous explained configuration between the DC and ACconnection by simple changes. This enables the future connection of more AC grids ifneeded. Additionally, it seems obvious that the election of the slack node is a criticalparameter that will influence the results; but in this work, an investigation and discussion ismade about the possibility of controlling other parameters of the grid, as for example the ACand DC power at the nodes.
YR 2011
FD 2011-12
LK https://hdl.handle.net/10016/18097
UL https://hdl.handle.net/10016/18097
LA eng
DS e-Archivo
RD 19 may. 2024