Model predictive control and protection of MMC-based MTDC power systems

Model predictive control and protection of MMC-based MTDC power systems

Shetgaonkar, A.D. (TU Delft Intelligent Electrical Power Grids)
Liu, L. (TU Delft Intelligent Electrical Power Grids)
Lekic, A. (TU Delft Intelligent Electrical Power Grids)
Popov, M. (TU Delft Intelligent Electrical Power Grids)
Palensky, P. (TU Delft Intelligent Electrical Power Grids)

2023

Meshed offshore grids (MOGs) present a viable option for a reliable bulk power transmission topology. The station-level control of MOGs requires faster dynamics along with multiple objective functions, which is realized by the model predictive control (MPC). This paper provides control, and protection design for the Modular Multilevel Converter (MMC) based multi-terminal DC (MTDC) power system using MPC. MPC is defined using a quadratic cost function, and a dqz rotating frame voltage inputs are represented using Laguerre orthonormal functions. MPC has been applied for the control of both grid forming and grid following converters in a four-terminal MTDC setup, implemented for real-time Electromagnetic Transient (EMT) simulation. By applying numerous time-domain simulations, the advantages of the MPC when dealing with AC and DC side disturbances are investigated. The investigation highlights the MPC's inherent feature of fast response and high damping during- and post-disturbance, which is compared to the traditional PI controller performance. The analysis provides a comprehensive insight into the transient behavior of the MTDC during disturbances.

GTFPGA
MMC
Model predictive control
MTDC
Software-in-the-loop
VARC DC CB
Wind power plant

http://resolver.tudelft.nl/uuid:9031353f-aecd-4e6a-95b8-d7810e6bcc84

https://doi.org/10.1016/j.ijepes.2022.108710

0142-0615

International Journal of Electrical Power & Energy Systems, 146

Institutional Repository

journal article

© 2023 A.D. Shetgaonkar, L. Liu, A. Lekic, M. Popov, P. Palensky