Subsynchronous Resonance
Subsynchronous Resonance (SSR) is a phenomenon where frequencies below the synchronous frequency (50/60 Hz) are amplified in power systems, causing oscillations that can damage turbines. First observed in Bushland, Texas in 1977, SSR results from interaction between series-compensated transmission lines and synchronous generators. Understanding and mitigating SSR is critical for stable grid operation, particularly with high levels of series compensation or power electronics.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Farmer, R. G., Natel, B., & Schulz, R. P. (1977). The bushland event of September 10, 1977. IEEE Transactions on Power Apparatus and Systems, 96(4), 1315-1328. · URL
- Hingorani, N. G. (1988). Subsynchronous resonance in power systems. IEEE Power Engineering Review, 8(5), 5-12. · URL
- Kimbark, E. W. (1971). Power System Stability. Wiley & Sons. · URL
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