Summary
The retirement of fuel-based synchronous generators, which have traditionally provided inherent inertia and frequency support, combined with the increasing penetration of renewable energy sources, is weakening power system stability. The resulting reduction in system inertia can lead to a high Rate of Change of Frequency (RoCoF) and an increased risk of frequency instability. These adverse effects can be mitigated through fast active-power support using synchronous grid-forming (SGFM) STATCOMs equipped with supercapacitor energy storage
Read more Read less(ESS). With appropriate control, SGFM STATCOMs can emulate the dynamic response of synchronous generators and deliver substantial active-power injections over short but critical periods, thereby limiting RoCoF and giving the power system sufficient time to activate primary, secondary, and tertiary frequency controllers, which are progressively slower. Hence, this paper presents an effective and fast control strategy that enables SGFM STATCOMs to provide robust frequency and active-power support while ensuring device protection by enforcing technical limits on current and DC-link voltage magnitudes. The simulation results presented in this paper demonstrate that the proposed control not only satisfies relevant requirements for frequency support, but also significantly surpasses them in terms of RoCoF limitation, active-power response, and overall dynamic performance, highlighting the strong potential of SGFM STATCOMs as key assets in modern low-inertia power systems.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B4_11365_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Finland |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
BERG Matias - GE Vernova; AMBEGODA Lahiru - GE Vernova; MÄKINEN Anssi - GE Vernova; QORIA Taoufik - GE Vernova; JASIM Omar - GE Vernova; BARKER Carl - GE Vernova; ZANDRAZAVI Seyed - GE Vernova
Keywords
