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Impact of DC filters energies on the commutation failure in HVDC CIGRE benchmark

Chiheb, Sofiane, Rekik, Badri, Messikh, Tarek, Djellad, Abdelhak, Bouderres, Nacer, Kherif, Omar, Chibane, Aicha and Djendli, Abir 2023. Impact of DC filters energies on the commutation failure in HVDC CIGRE benchmark. Chen, Min, Giorgetti, Marco, Jin, Bo and Agarwal, Ramesh K., eds. Advances in Machinery, Materials Science and Engineering Application IX, Vol. 40. Advances in Transdisciplinary Engineering, IOS Press, 744 - 749. (10.3233/ATDE230535)

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The present work is devoted to study and simulate of the functioning of monopolar HVDC LCC system of 500 kV in the presence of an AC power grids voltage disturbance. The CIGRE HVDC LCC Benchmark was simulated using MATLAB/Simulink in presence of AC grids voltage variations: first an overvoltage in AC grid 1 and second voltage drop in AC grid 2 have been simulated. All of these simulations are done to evaluate the robustness of the CIGRE HVDC LCC benchmark against AC grids voltage variation, and to investigate the ability of HVDC link function after disappearing of the simulated variation. The results showed that the HVDC LCC system is sensitive to overvoltage higher than 15 % appearing at the rectifier level, and is sensible too to voltage drops with more than 10 % at the invert level. In these conditions, a commutation failure leading to short-circuit was observed, which interrupt the HVDC link operation, and doesn’t permit re-establishment of link function after fault disappearing. To find the reason of the commutation failure appearing, the magnetic and electrostatic energies stored in DC filter elements have been measured and analyzed. The analysis show that when the magnetic energy is greater than the electrostatic one, the commutation failure appears.

Item Type: Book Section
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: IOS Press
ISBN: 9781643684383
ISSN: 2352-751X
Date of First Compliant Deposit: 20 December 2023
Last Modified: 22 Jan 2024 10:57

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