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.
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- 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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