Stability Enhancement of Multi machine AC Systems by Synchronverter HVDC control

Raouia Aouini (1) , Bogdan Marinescu (2, 3, 4) , Khadija Ben Kilani (1) , Mohamed Elleuch (1)

1 Laboratoire des Systèmes Electriques - LSE (Tunis, Tunisie)
2 ECN - École Centrale de Nantes
3 LS2N - Laboratoire des Sciences du Numériques de Nantes
4 LS2N - équipe DSG - Dynamics of Smart Grids

This paper investigates the impact of the Synchronverter based HVDC control on power system stability. The study considers multi machine power systems, with realistic parameters. A specific tuning method of the parameters of the regulators is used. The proposed control scheme is based on the sensitivity of the poles of the HVDC neighbor zone to the control parameters, and next, on their placement using residues. The transient stability of the HVDC neighbor zon e is a priori taken into account at the design stage. The new tuning method is evaluated in comparison with the standard vector control via simulation tests. Extensive tests are performed using Matlab/Simulink implementation of the IEEE 9 bus/3 machines test system. The results prove the superiority of the proposed control to the classic vector control. The synchronverter control allows to improve not only the local performances of the HVDC link, but also the overall transient stability of the AC zone in which the HVDC is inserted.

Mots clés: Synchronverter; Synchronous generator/motor; SHVDC; transient stability; damping oscillatory modes

Domaines: Energie électrique

Raouia Aouini, Bogdan Marinescu, Khadija Ben Kilani, Mohamed Elleuch. Stability Enhancement of Multi machine AC Systems by Synchronverter HVDC control. Journal of Electrical Systems, 2016. ⟨hal-02523143⟩