Optimal reactive power control for 3-phase EMT SVC grid-connected converter

Nowadays, the integration of power electronics into power systems has increased significantly. As a result, power grids were subject to numerous transformations. Hence, operations, power factor corrections, and voltage control of the grid-connected converters have become challenging tasks subject to...

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Bibliographic Details
Published in:2024 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE) pp. 1 - 6
Main Authors: Kouki, Mohamed, Trajin, Baptiste, Vidal, Paul-Etienne
Format: Conference Proceeding
Language:English
Published: IEEE 14.10.2024
Subjects:
Europe
Filtering algorithms
Linear programming
LQR
Matrix converters
Power system stability
Reactive Power
Smart grids
STATCOM
Static VAr compensators
SVC
TSA
Voltage control
Voltage-source converters
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Summary:Nowadays, the integration of power electronics into power systems has increased significantly. As a result, power grids were subject to numerous transformations. Hence, operations, power factor corrections, and voltage control of the grid-connected converters have become challenging tasks subject to enhancing the stability, reliability, and performance of the power grid. For this, we propose in this paper an advanced state-feedback control using the linear quadratic regulator (LQR) optimized by the metaheuristic method for a 2-level 3-phase voltage source converter (VSC) connected to the utility grid through an output L-type or LCL-type filter. The proposed methodology avoids the empirical trial-and-error technique for adjusting the weighting values of matrices Q and R respecting multi-objectives: (i) minimize control loop errors, (ii) minimize the overshoot, and (iii) respect suitable time constant. Thus, the optimal weighting matrices are provided using the multi-objectives Tunicate Swarm Algorithm-TSA. The effectiveness of the proposed methodology is tested on Electromagnetic Transients (EMT) VSC grid-connected systems and compared to standard vector control and advanced control (H ∞ ). The proposed methodology permits important performance regulation of reactive power for the feasible VSC operation range and under perturbation conditions (short circuits,...).
DOI:10.1109/ISGTEUROPE62998.2024.10863614