Comparisons of synchronous-machine models in the study of the transient behaviour of electrical power systems

摘要: Methods of modelling power systems in the study system transient behaviour are reviewed. Six machine models varying complexity developed from fundamental equations. Factors form equations, which critically influence economy solution, identified, The relationship between and equations is examined relation to digital solution multimachine problems, generalised methods outlined. Comparisons made results obtained range those full-scale fault-throwing tests on public supply system. In one case, a single connected high capacity modelled, while, second example, two 60 MW machines large mulrimachine modelled. Both non-pole-slipping pole-slipping for case 2-machine examined, marginally remained synchronism lost synchronism, respectively. It shown that subtransient phenomena simulated, but some transformer voltages stator together with subtrasient saliency, neglected, provide an adequate economical model disturbances, including may fall synchronism.