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← TechnologyWhich instability affects interconnected power systems when experiencing a sudden generation loss?
A)Oscillatory instability from insufficient damping
B)Voltage collapse from reactive power deficit
C)Frequency instability from load-generation imbalance✓
D)Harmonic resonance from transformer saturation
💡 Explanation
With generation loss, a load-generation imbalance occurs causing a large deviation of system frequency due to insufficient inertial response and regulation after the event. Therefore, frequency instability is the primary issue, better than oscillatory, voltage or harmonic causes each needing a different power deviation.
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