Open access simulation toolbox for the grid connection of offshore wind farms using multi-terminal HVDC networks

Abstract

This version is available at https://strathprints.strath.ac.uk/61139/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractDecarbonisation of the European electricity system can become dauntingly costly due to transmission and distribution network issues arising from the integration of intermittent renewable generation sources. It is expected that wind energy will be the principal renewable source by 2050 and, as such, a number of initiatives in the academia and in the industry are being carried out to propose solutions to best accommodate the wind resource. This paper presents work carried out by DEMO 1 partners within the EU FP7 project BEST PATHS. A MATLAB/Simulink toolbox consisting of the necessary building blocks for the simulation and integration of offshore wind farms using enabling technologies such as multiterminal high-voltage direct-current grids is presented. To illustrate the toolbox capabilities, a number of system topologies is studied. System performance is assessed and measured against a set of key performance indicators. To ensure knowledge dissemination, the toolbox has been made available as open access in the BEST PATHS project website.

Analysis of MMC Energy-Based Control Structures for VSC-HVDC Links

“…In the present case, 5 sections have been considered in order to account for the hyperbolic correction factors, which improve the detail of the model specially for long cables. Furthermore, a wideband frequency-dependent cable model from the Best Paths project open source library [25] has been used in the time-domain simulations in order to show that the model is accurate.…”

“…The small-signal analysis will be performed under this assumption for the AC power loop, and the performance will be verified through the non-linear time-domain simulation model. For the frequency-domain analysis, the following transfer functions are of interest: The specifications are defined imposing a limit in the maximum singular values (25) of such transfer functions:…”

Optimal Multivariable MMC Energy-Based Control for DC Voltage Regulation in HVDC Applications

“…Selecting a suitable cable model is a crucial aspect in electromagnetic transient simulations. In this paper, we use the Universal Line Model (also known as wideband model) from the BestPaths open access Simulink toolbox [20] that captures the frequency dependent behaviour of the cable.…”

Bridge-Type Integrated Hybrid DC Circuit Breakers

“…1 … represent the CLRs' inductances. 1 … and 1 … are the inductances and capacitances of the nearby connected dc network. The resistance of the bypass branches is negligible as it is much smaller than the equivalent resistance (RMB1 for BT-ICBtyp1 and RMB2 for BT-ICBtyp2) and the forward voltage drop of semiconductors of the BTMB ( 1 for BT-ICBtyp1 and 2 for BT-ICBtyp2).…”