Selective Frequency Support Approach for MTDC Systems Integrating Wind Generation

Aram Kirakosyan, Ehab Fahmy El-Saadany, Mohamed Shawky El Moursi, Magdy Salama
<span title="">2020</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/gnhkf3aieraxhlw7vpy6whnksy" style="color: black;">IEEE Transactions on Power Systems</a> </i> &nbsp;
This paper introduces a new control approach for Voltage Source Converter (VSC) stations in a multi-terminal dc (MTDC) grid to provide mutual frequency support among asynchronous ac networks. The developed coordinated control strategy modifies the active power references of each droop-controlled converter considering its adjacent ac system's operational condition to enable the desired frequency support. Specifically, the proposed controller accurately achieves operator pre-specified frequency
more &raquo; ... viation ratios between the disturbed ac systems and other areas, thereby providing frequency support to affected grids during the whole frequency event. Therefore, an extra degree of freedom can be achieved in determining the extent of mutual frequency support. The performance of the proposed strategy is tested considering grids with significantly different frequency regulation characteristics. The stability analysis and time-domain validation of the proposed strategy are conducted in Matlab/Simulink. Index Terms-Multi Terminal HVDC, converter control, P-V droop control, frequency response.
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tpwrs.2020.3006832">doi:10.1109/tpwrs.2020.3006832</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/ve2y4mzfn5aodgl7iczpkjdcpa">fatcat:ve2y4mzfn5aodgl7iczpkjdcpa</a> </span>
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