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Enhanced grid frequency support by means of HVDC-based load control

Langwasser, Marius; De Carne, Giovanni ORCID iD icon; Liserre, Marco; Biskoping, Matthias

Abstract (englisch):

The two major frequency incidents in Continental Europe and UK call for faster frequency regulation. Hvdc systems can dynamically adjust the power output to support the frequency regulation by means of droop characteristics. Adding derivative terms in the power controller enables inertia emulation that improves the system initial response. As drawback, due to the fast power transfer variation, the HVDC-connected areas suffer from temporary power imbalance and hence frequency deviation. To overcome this limitation, HVDC-based load controllers can be implemented at HVDC terminals to shape the consumption of nearby voltage-sensitive loads by means of controlled voltage variations, with the goal to minimize the frequency deviation in the supporting areas. In multi-terminal systems, the frequency support can be optimally shared among terminals depending on the load sensitivity. This minimizes the voltage deviation in supporting areas and limits the hvdc reactive power, while providing the same frequency damping in the faulty area.

DOI: 10.1016/j.epsr.2020.106552
Zitationen: 6
Web of Science
Zitationen: 3
Zitationen: 5
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2020
Sprache Englisch
Identifikator ISSN: 0378-7796
KITopen-ID: 1000137937
Weitere HGF-Programme 37.12.03 (POF IV, LK 01) Smart Areas and Research Platforms
Erschienen in Electric power systems research
Verlag Elsevier
Band 189
Seiten Art.-Nr.: 106552
Vorab online veröffentlicht am 29.07.2020
Schlagwörter Frequency support, Load sensitivity, Multi-terminal hvdc, Primary frequency regulation, Voltage-dependent loads
Nachgewiesen in Web of Science
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