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Grid-forming and Grid-following Flywheel Energy Storage System for Microgrid Frequency Regulation




TekijätNgaha, Willy Stephane; Gomes, Chandima; Dorrell, David G.

ToimittajaN/A

Konferenssin vakiintunut nimiSouthern African Universities Power Engineering Conference

Julkaisuvuosi2025

Kokoomateoksen nimiProceedings of the 33rd Southern African Universities Power Engineering Conference, SAUPEC 2025

ISBN979-8-3315-3517-9

eISBN979-8-3315-3516-2

DOIhttps://doi.org/10.1109/SAUPEC65723.2025.10944372

Verkko-osoitehttps://ieeexplore.ieee.org/document/10944372


Tiivistelmä

Inverter-based resources (IBRs) have low inherent inertia, making it difficult to maintain system stability especially with of their increasing penetration. However, Flywheel Energy Storage Systems (FESSs), combined with advanced inverter technologies like Grid-Forming (GFM) and Grid-Following (GFL) inverter sources, offer a promising solution for frequency regulation and stability support. This paper investigates the dynamic performance of a microgrid with integrated FESS operating in both GFM and GFL modes, focusing on their complementary roles in maintaining frequency stability. A coordinated control strategy using MPC is introduced to optimize the response of both GFM and GFL inverters. The results obtained by simulation in Matlab/Simulink and validation on Digsilent/PowerFactory show that the RoCoF increases with the increased IBR penetration. To balance these two IBR interfaces, the focus should be on the GFM-FESS. It should be tuned, which, in this investigation, leads to better frequency response with the same capacity, size, and location. This adaptability makes the FESS a highly effective tool in stabilizing low-inertia power systems and ensuring microgrid frequency regulation.



Last updated on 2025-04-04 at 08:50