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Power electronic control in electrical systems 21
are discretized using the trapezoidal rule of integration and then combined with the
network's equations using nodal analysis. The solution procedure is carried out step-
by-step (Arrillaga and Watson, 2001).
Fig. 1.17 A five-node power network with two generators,seven transmission lines and four loads.
100
Fault cleared Machine at bus 2
80
Internal voltage angle, deg 60 Machine at bus 1
40
20
0
–20
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Time, sec
(a)
