Question

Figure 1 shows a single-line diagram of a three phase, 60-Hz, synchronous generator, connected through a transformer and parallel transmission lines to an infinite bus. All reactances are given in per unit on a common system base. In steady state, the infinite bus receives 1.0 per unit real power at 0.95 power factor lagging. The generator in Figure 1 is initially operating in steady state, when circuit breaker B12 inadvertently opens. Use the equal area criterion to calculate the maximum value of the generator power angle δ. Assume ω711(t) = 1.0 pu in the swing equation. Also assume generator mechanical power m remains constant throughout the disturbance. The online equation solver at B12 821 X12-0.20 α) # 030 811 bus1 822 х,з = 0.10 |X23-0.20 81 3

Answer 1

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