Micromachine simulation of steam power plant

Owing to the recent growth in turbogenerator size, the dynamics of the steam-power plant influence considerably the behaviour of a generating station during large transient disurbances. To study this behaviour, detailed mathematical large-signal, nonlinear models of a boiler, turbine, governor and automatic voltage regulator (a.v.r.) were developed both for digital- and analogue-computer applications. The turbine was also modelled by a d.c. motor driving a microalternator. The power plant, simulated by an analogue computer connected to a micromachine system, was tested under load rejection and pole-slipping fault transients. The results are shown to correlate satisfactorily with those obtained from the Goldington and Northfleet power-station tests. For both these tests, an explanation of the control aspects of the phenomena is attempted.