Print Email Facebook Twitter Two-layer control structure for enhancing frequency stability of the MTDC system Title Two-layer control structure for enhancing frequency stability of the MTDC system Author Stojković, J. (University of Belgrade) Shetgaonkar, A.D. (TU Delft Intelligent Electrical Power Grids) Stefanov, Predrag (University of Belgrade) Lekić, A. (TU Delft Intelligent Electrical Power Grids) Date 2023 Abstract This paper explores the possibilities of providing fast frequency support as an emergency support service to the disturbed AC system through the MTDC grid. A two-layer hierarchical control structure of the MTDC grid is proposed to assure the minimum cost of the frequency control actions, the minimum voltage deviations, or the minimal impact on the frequencies of not-affected AC systems while ensuring the stable operation of MTDC grid. An optimization algorithm is executed at the secondary control level to find the optimal reference values for the voltage-droop characteristics of the voltage-regulating converters, and consequently their DC voltages and active power references. Then, at the primary control level, the reference values are tuned with the optimization results. Implemented control structure confirms that MTDC can provide set values at its terminals without endangering its stability. The secondary control layer is implemented in MATLAB, while the performance of the controller is successfully evaluated through simulation in RSCAD. Subject Adaptive droop controlFrequency controlMulti-terminal DC gridsPower sharing To reference this document use: http://resolver.tudelft.nl/uuid:112de280-d0db-407c-88fd-582c317ca4ef DOI https://doi.org/10.1016/j.ijepes.2022.108664 Embargo date 2023-07-01 ISSN 0142-0615 Source International Journal of Electrical Power & Energy Systems, 145 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 J. Stojković, A.D. Shetgaonkar, Predrag Stefanov, A. Lekić Files PDF 1_s2.0_S0142061522006603_main.pdf 6.09 MB Close viewer /islandora/object/uuid:112de280-d0db-407c-88fd-582c317ca4ef/datastream/OBJ/view